Kato Engineering Inc.
P.O. Box 8447
Mankato MN 56002-8847 - USA
IMPORTANT
THIS GENERATOR IS MADE TO OPERATE IN A POTENTIALLY EXPLOSIVE ATMOSPHERE, TYPE OF
PROTECTION “N”
SPECIAL ATTENTION IS REQUESTED AS DESCRIBED BELOW TO MAINTAIN THE VALIDITY OF THE
COMPLIANCE
Note: If the machine is certified by a third party, the Special Conditions of Safe Use listed on the third
party certificate are also listed below.
1- Introduction:
This is a machine intended for use in an explosive gas atmosphere in compliance with CENELEC EN
60079-15:2005.
2- Cable entries, connections, safe use and maintenance:
2.1. The installer and user shall ensure the supply lead insulation is suitably rated for the supply.
2.2. The installer and user shall ensure there are no loose conductor strands after the supply leads
have been connected.
2.3. The lugs terminating the main cable, on all except the 1.1kV generators, shall have retained
insulation which covers the termination, lug and continuously extends over the cable insulation.
2.4. Any unused cable entries shall fitted with suitable ATEX certified blanking elements which
maintain the IP rating of the enclosure.
2.5. The installer and user shall ensure all terminal nuts and screws are tightened.
2.6. The supply to the anti-condensation heaters must be interlocked so that they cannot be energised
whilst the generator is running.
2.7. Auxiliary terminals may be used with one solid, multi-stranded or ferruled conductor in each
terminal way. In addition, the cable insulation shall extend to within 1 mm of the terminal conductor.
2.8. The installation, start-up, maintenance and trouble shooting must be done in a safe environment
with no risk of gas (e.g.: well ventilated area) and per the Kato Engineering instruction manual.
2.9. Whenever the machine is tested for electric strength (insulation test), the auxiliary devices shall be
connected to ground.
2.10. Before using a motor with an external Nylon 6 cooling fan, the resistance of the external fan blade
material to any solvent vapor which is liable to be present should be ascertained. Exposure to the
vapors of certain solvents may cause swelling of the fan material, thus allowing the fan to become loose
on the shaft and the motor to overheat.
2.11.In operation, this machine must be used within its rated characteristics in an atmosphere that does
not exceed the above potentially explosive atmosphere for which it is designed for.
2.12.This machine must not operate with any cover removed or a terminal box opened that can affect
the protection rating
2.13. All gasketed joints must be examined after having being disturbed; the gasket should adhere to
one face and be replaced as necessary to maintain the IP rating.
2.14.Secondary of the current transformers must always be shorted when the transformers are not
used while the generator is in operation.
2.15.It is not allowed to add or modify any components (other than cable entries as described above)
without a formal written approval of Kato Engineering.
2.16.Only genuine spare parts from Kato Engineering must be used.
Doc. # 350-01060-00 rev. A
Dec 6, 2010
by François Thauvin
(This page intentionally left blank)
Instruction Manual
Installation • Operation • Maintenance
AC Turbine Generator
Page 1
Table of Contents
Introduction............................................................4
Foreword...............................................................................4
Safety instructions.................................................................4
Ratings/description................................................................4
Construction and Operating Principles...............6
Stator.....................................................................................6
Rotor......................................................................................7
Bearings................................................................................8
Connection boxes..................................................................8
Excitation system...................................................................9
PMG system........................................................................11
Installation.............................................................12
Receiving inspection............................................................12
Unpacking and moving........................................................12
Location...............................................................................12
Note: Because of rapid changes in designs
and processes and the variability of Kato
Engineering’s products, information in this
manual must not be regarded as binding
and is subject to change without notice.
The image on the front cover is representative only. Several variations are available
within the range of generators covered
within this manual.
Base design.........................................................................12
Assemble to prime mover, alignment...................................13
Two-bearing alignment.............................................13
Foot deflection......................................................................15
Doweling...............................................................................15
Page 2
Electrical connections...........................................................15
Space heaters......................................................................15
Inspection before startup.....................................................15
Operation..............................................................17
Initial startup: generators w/auto & manual control..............17
Initial startup: generators w/auto control only.......... ............17
Restoring residual magnetism/field flashing.........................18
Continuous operation...........................................................19
Idling....................................................................................20
Parallel operation.................................................................20
Maintenance.........................................................23
Schedules............................................................................23
Maintenance procedures.....................................................25
Visual inspection methods of windings.....................25
Cleaning....................................................................26
Insulation resistance tests at low voltage.................27
Dry out procedures...................................................28
Bearing lubrication....................................................29
Rectifier tests............................................................29
Disassembly.........................................................................31
Overall disassembly..................................................31
Exciter armature and PMG removal..........................31
Bearing removal........................................................32
Assembly.............................................................................34
Bearing installation....................................................35
Overall assembly.......................................................35
Exciter armature and PMG installation.....................37
Troubleshooting Guide.......................................40
Appendices..........................................................43
List of equipment required for installation
and maintenance.................................................................43
Storage................................................................................44
Page 3
Introduction
Foreword
This manual contains instructions for installing, operating and
maintaining Kato Engineering AC brushless revolving field generators.
These generators are manufactured in many sizes and ratings and with
various options.
Lubrication information, electrical connection drawings, dimensional
drawings and parts listings for your model are contained in the manual
package as supplementary information and are the specific source of
information for making connections and ordering replacement parts.
Information about optional components of your generator may also be
contained as a supplement.
Please read this manual in its entirety before unpacking, installing, and
operating your generator.
Safety instructions
In order to prevent injury or equipment damage, everyone involved in
installation, operating and maintenance of the generator described in this
manual must be qualified and trained in the current safety standards that
govern his or her work.
While “common-sense” prevention of injury or equipment damage
cannot be completely defined by any manual (nor built into any piece
of equipment), the following paragraphs define warnings, cautions, and
notes as they are used in this manual:
Warning: Warnings identify an installation, operating or maintenance
procedure, practice, condition, or statement that, if not strictly followed,
could result in death or serious injury to personnel.
Caution: Cautions identify an installation, operating or maintenance
procedure, practice, condition, or statement that, if not strictly followed,
could result in destruction of or damage to equipment or serious
impairment of system operation.
Note: Notes highlight an installation, operating or maintenance
procedure, condition, or statement and are essential or helpful but are not
of known hazardous nature as indicated by warnings and cautions.
Ratings/description
Nameplates, which are located on the side of the generator, include
serial and model number as well as rating information and bearing and
lubrication information.
Page 4
Figure 1: Typical turbine generator
Page 5
Construction and Operating Principles
Enclosures
The standard design is open drip proof. The following options may apply
to your unit:
•
•
•
•
•
•
Air filtered
Air-to-air heat exchanger cooled (TEAC/CACA)
Air-to-water heat exchanger cooled (TEWAC/CACA)
Weather protected II
IP 22, 23,25,44,54
Sealed windings
See your drawings included in the drawing section for details on your
unit.
Stator
The stator consists of the supporting frame, core, and armature windings.
The stator core is made from laminations, thin sheets of electrical steel,
which are stacked and held in place by steel end rings and support
bars. The rings and bars are welded to or are part of the steel frame.
Base mounting plates are welded to the bottom of the frame. The base
mounting plates allow the assembly to be mounted on the genset base.
Some stators are made of rolled steel with foot gussets. See Figure 2.
Figure 2: Generator frame
Page 6
The windings (coils) are constructed of layered and insulated copper
wire. The coils are inserted in the core slots, connected together, and
the entire assembly is vacuum-pressure impregnated with resin. Stator
leads terminate in standard connection lug or strap terminals for ease of
connection to the load.
Rotor
The main rotor assembly is the revolving field. It consists of windings
in a core, which is in turn mounted on a steel shaft. The exciter armature
assembly and permanent magnet generator (PMG) rotor are also mounted
on the shaft as are the fan(s) and other optional accessories. The core
consists of laminations, thin sheets of electrical steel, which are stacked
together. The core makes the salient poles. See Figure 3.
The rotor windings consist of insulated magnet wire wound around
each pole. V-blocks or spreader bars between each pole keep the rotor
windings in place. Damper windings consist of copper or aluminum rods
that are inserted through each pole surface and are brazed to copper or
aluminum damper end plates at each end of the lamination stack.
Figure 3: Generator rotor
The end plates are brazed to adjacent poles to form a continuous damper
winding. The ends of the windings are supported with bars or aluminum
pole shoes. Some designs have neither end shoes or plates. The rotor is
vacuum-pressure impregnated with resin.
The shaft is made from high-strength rolled or forged steel and machined
to accommodate all the rotating generator components. Keyways in the
shaft ensure precise positioning of the rotor, fans, exciter armature, and
PMG rotor as well as drive couplings. On the exciter side, the shaft has
a slot or hole in its centerline for running the revolving field leads to the
rectifier.
Page 7
If your unit has split roller bearings instead
of sleeve bearings, please consult you
bearing manual that came with your manual
package.
Bearings
The sleeve bearings may be self lubricated or force fed from a separate
oil system. Temperature detectors monitor the operating conditions of
the bearing and lubrication system. The sleeve bearing is self-aligning.
See bearing manual for details. RTDs are provided to monitor bearing
temperature during operation. A non-conducting liner insulates the
bearing against shaft currents. See your bearing manual under seperate
cover for more information. See Figure 4.
Figure 4: Sleeve bearing
Connection boxes
The main lead connection box houses the load lead terminals, and may
be located either side or on top. In addition, the generator may have
auxiliary connection boxes for connecting temperature detector outputs,
space heater connectors, and sensing outputs. See your drawings for
details. See Figure 5.
Figure 5: Typical terminal box
Page 8
Excitation system
The excitation system consists of the exciter stator assembly and the
exciter armature assembly. See Figure 6.
The exciter stator assembly consists of windings in a core. The core is
made from steel laminations that are stacked and welded together. The
main exciter stator coils are placed in slots in the core and form alternate
north and south poles. The entire assembly is either mounted to the end
bracket or mounted in a frame, which is mounted to the end bracket. The
stator is a stationary field, which is powered by the voltage regulator.
The assembly consists of two subassemblies: the exciter armature and
the rotating rectifier. The exciter armature assembly contains steel
laminations that are stacked and keyed on the shaft or onto a sleeve,
which is keyed to the generator shaft. A three-phase winding is inserted
into slots in the laminations. The coils are held in place by insulating
wedges. The coil extensions are braced with tape. Output leads from the
winding are connected to the rotating rectifier assembly.
Figure 6: Excitation system
The rotating rectifier is a three-phase, full wave bridge rectifier,
converting the AC from the exciter armature to DC, which is transferred
to the revolving field windings. Two aluminum steel plates, each
containing three rotating rectifier diodes, are mounted on each side of
an insulating hub to form the negative and positive terminals. The plates
also act as heat sinks for the diodes.
Excitation system functional overview: Exciter field control is
established by the strength of the exciter field current developed by
the voltage regulator system. The DC voltage and current levels of the
exciter field signal from the voltage regulator varies depending upon the
generator output voltage and the loading of the output lines. See Figure
7.
Page 9
Figure 7: Overview of excitation system
Page 10
PMG rotor
(field)
PMG stator
(armature)
Power input
Exciter
armature (AC)
Voltage
regulator
Rectifier
Exciter stator
(field)
Main rotor (DC)
Main stator
(armature)
Output leads
Shaft
Prime mover
PMG system
The permanent magnet generator (PMG) system consists of the PMG
stator and PMG rotor:
The PMG stator is a stationary armature and is located within the stator
assembly that also contains the exciter stator or is a separate stator
mounted next to the exciter stator. The PMG stator consists of steel
laminations. The laminations are held in place by steel compression rings
and are welded to the frame bars of the exciter-PMG frame. The PMG
windings are placed in slots in the laminations. Insulating wedges are
inserted at the top of each slot to hold the coils in position.
The PMG rotor consists of rectangular permanent magnets and cast pole
tips secured to a steel hub with nonmagnetic stainless steel bolts. The
PMG rotor is keyed to the shaft and secured with a nut and lock washer.
PMG system overview: The PMG system functions as a pilot exciter,
providing power to the automatic voltage regulator power supply. The
PMG is an AC generator that uses permanent magnets in the rotor instead
of electromagnets to provide the magnetic field. See Figure 8.
Figure 8: PMG
Page 11
Warning: Be alert at all times when
installing, operating and maintaining the
generator. Avoid contact with the uninsulated
metal parts of the generator. Most injuries
occur from faulty ground connections on
portable electrical equipment and failure to
ground stationary equipment.
Test all portable devices frequently to
prove that a solid electrical circuit exits
from the metal frame though the grounding
conductor, in the electrical cord, to the
grounding contact in the attachment plug.
Do not use electrical equipment with frayed,
burned or damaged cords. Always take
extreme care when moving the generator.
Be careful to not strike objects or personnel.
Apply lifting force to structural points
specifically provided for lifting. Do not use
the enclosure lifting holes to lift the whole
unit. Use lifting means adequate for the
weight. Observe lifting notices attached
to the generator. Failure to observe these
instructions can result in injury and damage
to the generator.
Caution: Do not attempt to transport a
single-bearing generator without maintaining
proper rotor support and with the exciter
rotor assembly removed. Failure to observe
this warning can result in equipment
damage.
Caution: Blocking or restriction of normal air
flow into or out of the generator may cause
damage to the electrical windings.
Installation
Receiving inspection
Before accepting a shipment, examine the packaging for any sign of
damage that might have occurred during transit. Report any damage to
the transportation company and Kato Engineering.
Unpacking and moving
If the generator is received during cold weather, reduce condensation on
cold surfaces and failure due to wet windings by allowing the generator
to reach room temperature before removing the protective packing.
Unpack the generator carefully to avoid scratching painted surfaces.
Do not remove the protecting lubricant from the shaft end. Inspect for
loosely mounted components and the presence of moisture. Inspect
to make certain foreign material, such as crating nails, loose bolts
or packing material, which may have fallen into the machine during
unpacking, is removed. If damage is noted, determine the extent of
damage and immediately notify the transportation company claims office
and Kato Engineering. Be sure to give complete and accurate details
when reporting damage.
Move the generator by attaching an overhead hoist to the eyebolts
installed on the generator frame or by lifting the generator from
underneath the skid with a forklift.
Location
Install the generator in an area so it complies with all local and industrial
regulations. Locate it in a clean, dry, well-vented area or area that is
suitable for the generator enclosure. Make sure it is easily accessible for
inspection and maintenance.
Protect generators operating intermittently in very damp locations with
space heaters. Slowly warm generators placed in operation after being
subjected to very low temperatures to prevent excessive condensation.
Check winding resistance before placing the generator in operation (see
page 27).
Base design
The type of base to be used will depend upon the nature of the
installation site. However, the generator base must be rigid, level, and
free from vibration. Mounting holes must be larger than the fasteners to
allow for alignment.
Page 12
Assemble to prime mover, alignment
Notes: Mounting of the indicators must
allow complete rotation of the prime mover.
Two-bearing alignment
Follow the tolerances specified by the coupling manufacturer when they
are less than described in this manual.
Use shims, if necessary, between the mounting pad and the base to
properly level and align the generator to the prime mover.
Install the coupling(s) on the generator and engine drive shafts in
accordance with coupling manufacturer installation procedures. Use a
straight edge and a thickness gauge for rough alignment as shown in
Figure 9. Check for angular and parallel alignment as follows:
Straight edge
Use dial indicators that are rigid so indicator
sag won’t be a factor. Using the shortest
offset distance of the indicator bracket will
reduce the effects of indicator droop or sag.
During alignment, you may also need to
compensate for engine expansion due to
heating. Generator expansion is generally
not considered a factor.
If the genset is moved to a different
location, check alignment before startup.
Caution: Do not pry on the generator fan.
Caution: Generators equipped with sleeve
oil bearings must have oil added to the
bearing prior to rotation. See the bearing
manual.
Thickness gauge
Figure 9: Rough alignment
Angular alignment: Fasten a dial indicator to one of the coupling halves,
and scribe the position of the dial button on the face of the opposite
coupling half as shown in Figure 10. Rotate both shafts simultaneously,
keeping the finger or button on the indicator at the reference mark on the
coupling hub. Note the reading on the indicator dial at each one quarter
revolution.
A variation of readings at different positions will indicate how the
machine needs to be adjusted to obtain a maximum misalignment of
0.001 inch for each inch of the coupling hub’s radius, total indicator
runout. Place or remove slotted shims from under the front or rear engine
or generator mounting pads and/or shift the front or back half of one
component from side to side until the components are properly aligned.
Tighten the mounting bolts, and recheck alignment.
Page 13
Dial indicator
Figure 10: Angular alignment
Parallel alignment: Fasten a dial indicator to one of the coupling halves,
and scribe the position of the dial button on the top of the opposite
coupling half as shown in Figure 11. Rotate both shafts simultaneously,
keeping the finger or button on the indicator at the reference mark on the
coupling hub. Note the reading on the indicator dial at each one quarter
revolution. A variation of readings at different positions will indicate how
the machine needs to be adjusted to obtain a maximum misalignment of
0.002 inch. Place or remove slotted shims from under all of the engine
or generator mounting pads and/or shift one component from side to side
until the components are properly aligned. Tighten the mounting bolts,
and recheck alignment.
Dial indicator
Figure 11: Parallel alignment
Page 14
Foot deflection
After alignment, check for foot deflection or “soft foot” condition on
each shim location to eliminate distortion of the generator frame. Do
this by loosing one mounting bolt at a time and checking deflection
after retightening. Deflection at the shim location from shims under
compression to a loosened condition must not exceed 0.003 inch.
Doweling
In case the mounting bolts loosen during operation, doweling will
prevent movement of the generator. Dowel as follows:
Check the alignment after the generator has been in operation for at least
48 hours. If alignment is not satisfactory, realign.
Drill holes through the footpads and into the base in two mounting pads
opposite each other. Drill the holes slightly smaller than the dowel pin.
Ream the holes to the proper diameter for the pin. Clean out chips, and
install the pins.
Electrical connections
If the generator was subjected to a rapid change in temperature, freezing
or wet conditions during shipment or storage, measure the insulation
resistance of each winding and dry the generator, if necessary, as
described in the maintenance section.
Make all electrical connections (main load, temperature monitoring
device, space heater, AVR) in accordance with local regulations and
national/international electrical code requirements. Check the electrical
diagrams provided with the generator or manual. The main terminals
need to be properly spaced for the load connections. Refer to Table 3 for
the proper torque values for the connections.
Grounding points are provided for properly grounding the system to
the generator frame. The grounding wire must be sized to national/
international code requirements.
Space heaters
To prevent water condensation during long periods of downtime, connect
the space heaters so they start when the generator is turned off and stop
when the generator is switched on. Refer to the electrical diagrams for
the space heater characteristics.
Inspection before startup
After electrical connections have been made, perform the following
checks:
Page 15
Warning: The space heaters are designed
to be energized when the generator is
shut down. They are hot enough to cause
skin burns. terminals for power at the
space heaters are live during operation.
Disconnect power to the space heaters
Warning: If necessary, remove the covers
around the space heaters to reduce the risk
of fire.
•
Check all the connections to the electrical diagrams provided.
•
Secure all covers and guards.
•
Turn the rotor slowly with the appropriate starting mechanism (bar
the engine or flywheel) through one revolution to see if the rotor
turns freely.
•
Check the bearings to see they are properly lubricated.
•
Determine the direction of the engine rotation, and make sure that it
matches the rotation of the generator.
•
Make sure the power requirements comply with the data on the
generator nameplate.
•
Make sure that the engine-generator set is protected with an adequate
engine governor and against excessive overspeed.
•
Make sure the output of the generator is protected with an overload
protection device, such as circuit breakers or fuses, sized in
accordance with national/international electrical code and local
electrical code standards. Fuses need to be sized using the lowest
possible current rating above the full-load current rating (115% of
rated current is commonly recommended).
•
Remove tools and other items from the vicinity of the generator.
Page 16
Operation
Initial startup: generators with both automatic and
manual voltage control
Caution: Do not make connections or otherwise make contact with the generator leads
or other devices connected to them unless
the genset is stopped and the phase leads
are grounded.
1. Disconnect the generator output from the load by opening the main
circuit breaker.
2. Turn the manual voltage adjust rheostat fully counterclockwise.
3. Put the auto-manual switch in the manual position.
4. Start the prime mover, and bring the set to rated speed. Turn the
manual voltage adjust rheostat to reach rated voltage. Close the
output circuit breaker, and apply load in steps until the rated load is
reached. Adjust the manual adjust rheostat as necessary to obtain the
desired output voltage.
5. Gradually reduce load, and adjust the rheostat accordingly until no
load is reached. Open the circuit breaker, and stop the prime mover.
6. Actuate the auto voltage rheostat. Then start the genset, and bring it
to rated speed. Adjust the voltage to the desired value.
7. Close the output circuit breaker. Then check the generator voltage
and voltage regulation. Apply load in steps until the rated load is
reached.
8. Check for vibration levels at no load and rated load. A slight increase
is normal. As the load is maintained for 2-3 hours, the vibration
levels will gradually increase and reach a final level.
Initial startup: Generators with automatic voltage control
only (generator has an automatic voltage regulator (AVR)
with no auto-manual switch)
1. Disconnect the generator output from the load by opening the main
circuit breaker.
2. Turn the voltage adjust rheostat fully counterclockwise. Start the
prime mover, and bring the set to rated speed. Turn the voltage adjust
rheostat to obtain the desired voltage.
3. Close the output circuit breaker, and apply load in gradual steps
until the rated load is reached. Note the voltage regulation with the
changes in load steps.
4. Check for vibration levels at no load and rated load. A slight increase
is normal. As the load is maintained for 2-3 hours, the vibration
levels will gradually increase and reach a final level.
Page 17
Caution: Do not actuate the auto-manual
switch with full load applied to the generator.
Whenever possible, stop the generator
before switching.
Caution: Refer to the voltage regulator
manual for complete details and possible
additional instructions. Damage to the rotating diodes, generator, and voltage regulator
can be caused if the regulator is operated
improperly.
Caution: Operating the unit beyond nameplate values may cause equipment damage
or failure.
Note: If the polarity of the exciter is reversed
by flashing the field, it may be corrected by
interchanging the battery leads.
Restoring residual magnetism/field flashing
The direct current necessary to magnetize the revolving field is obtained
from the exciter. Upon starting the generator, current and voltage is
induced into the exciter by the magnetic lines of force set up by residual
magnetism of the exciter field poles. Residual magnetism of the exciter
field poles may be lost or weakened by a momentary reversal of the field
connection, a strong neutralizing magnetic field from any source, or nonoperation for a long time. If the generator fails to generate voltage after
it has come up to rated speed, it may be necessary to restore residual
magnetism.
- 12 or 24 V
battery
+
3 amp or
larger diode
FF+
Voltage
regulator
EF1
EF2
Figure 12: Field flashing setup with the field wires
connected to the regulator
To restore the small amount of residual magnetism necessary to begin the
voltage build up, connect a 12 or 24-volt battery to the exciter field coil
circuit and flash as follows:
1. Open the output circuit breaker, and stop the engine.
2. Disconnect the exciter field coil wires EF1 at the terminal EF1 and
EF2 at the terminal EF2, and connect the battery positive lead to the
field coil lead EF1.
3. Flash the field by touching the battery lead to the field coil circuit
terminal EF2.
4. Disconnect the battery leads.
5. Reconnect the field coil lead EF1 to terminal EF1, and reconnect the
field coil lead EF2 to terminal EF2.
6. Start the generator, and check for voltage build up. Reflash if
the generator output voltage does not build up, or flash with the
generator running, the field coil wires connected to the regulator, and
a 3-amp or larger diode off the positive terminal of the battery per
Figure 12.
Page 18
Continuous operation
Operate the generator within the nameplate values . If the generator is
operated below the rated power factor and voltage, decrease the kVA to
prevent overheating of the field and stator windings. Consult the factory
for derating factors if the application requires the unit to be operated
beyond nameplate values.
Rotor overheating may occur when the generator is carrying excessive
unbalanced loads. Negative sequence currents flowing in the field pole
face cause the rotor heating. For a general guide to the allowable phase
unbalance, see Figure 13, Guide to allowable phase unbalance (which is
based on a 10% equivalent negative sequence current).
The guide is used in the following manner: Find the point where the
vertical line (determined by the maximum current in any of the phases
and expressed in percent of rated current) crosses the horizontal line
(determined by the minimum current in any of the phases and expressed
in percent of rated current). Ensure the point where these two lines
intersect is within the permissible allowable unbalance region for safe
operation of the generator.
Min. current in any phase (% of rated)
100
80
Allowable
unbalance
60
Excessive
unbalance
40
20
0
20
40
60
80
100
Max. current in any phase (% of rated)
Figure 13 Guide to allowable phase unbalance
Loss of field excitation can result in the unit operating out of
synchronization with the system when operating in parallel. This has the
effect of producing high currents in the rotor, which will cause damage
very quickly. Protective relays should be considered to open the circuit
breaker.
Page 19
Idling
Unless the voltage regulator has V/Hz protection built in, having the
generator set in operating mode while idling the engine can cause
permanent equipment damage. If engine adjustments require that
the engine be run at idle speed and the regulator does not have V/Hz
protection, make the generator regulating system inoperative during
idling by one of the following methods:
When the generator is provided with a voltage shutdown switch, be sure
the switch is set to the idle position while the engine is running at idle
speed.
Where the generator set is provided with field circuit breakers, set the
circuit breaker to the off position while the generator is running at idle
speed.
Where the generator set is provided with an automatic/manual control
switch that has an off position, switch it to off while the engine is
running at idle speed.
Where the generator set does not have any of the above options, remove
the wires from the voltage regulator input power terminals when the
engine is running at less than rated speed.
Parallel operation
For the generator to operate in parallel with a system in operation, the
phase sequence of the generator must be the same as that of the system.
Use transformers to reduce the voltage to an acceptable level, and then
use a phase rotation meter or incandescent lamp method, described in
electrical machinery handbooks, for a phase sequence check.
The output voltage at the paralleling point must be the same each instant,
which requires that the two voltages be of the same frequency, same
magnitude, same rotation, and in coincidence with each other.
Voltmeters indicate whether the voltage magnitude is the same, and
frequency meters indicate whether the frequencies are the same. Whether
the voltages are in phase and exactly at the same frequency is indicated
by a synchroscope or by synchronizing lamps.
A synchroscope can be used to indicate the difference in phase angle
between the incoming machine and the system. The generator can be
paralleled by using incandescent lamps connected as shown in Figure 14.
The voltage rating of the series lamps must equal the voltage rating of the
transformer-low voltage winding.
Page 20
System bus
Load
switch
Synchronizing
lamps
Load lines from the incoming generator
Figure 14: Synchronizing paralleled generators with test lamps
Each prime mover in the system must have the same speed regulating
characteristics, and the governors must be adjusted to give the same
speed regulation as determined by applying load that is proportional to
the full load rating of the generator.
The voltage regulator must include paralleling circuitry. In addition, the
voltage, droop settings and the V/Hz regulation characteristics must be
the same for all the voltage regulators. This will allow the generators to
properly share reactive loads.
If cross-current compensation is used, paralleling current transformers
must give the same secondary current.
Current transformer secondary windings provide reactive kVA droop
signal to the voltage regulator. Accidental reversal of this electrical
wiring will cause the voltage to attempt to rise with load rather than
droop. If this occurs during paralleling, stop the unit and reverse the
wires at the voltage regulator terminals.
If the set is provided with a unit/parallel switch, set the switch to the
parallel position on the unit being synchronized.
Synchronize the generator by adjusting the speed (frequency) slightly
higher than the system. Observe the synchroscope or the lamps. The
lamps should fluctuate from bright to dark at the rate of one cycle every
2 to 3 seconds. When the generator is in phase (the lights will be dark),
close the circuit breaker. Immediately after closing the breaker, measure
the line current kVAR of the generator. The readings must be within
the rating of the unit. A high ammeter reading accompanied by a large
kW reading indicates faulty governor control. A high ammeter reading
accompanied by a large kVAR unbalance indicates problems with the
voltage regulator. Adjusting the cross current or voltage droop rheostat
should improve the sharing of kVAR.
Page 21
To shut down the generator operating in parallel, gradually reduce the
kW load by using the governor to reduce speed. When kW load and
line current approach 0, open the generator circuit breaker. Operate
the generator unloaded for several minutes to dissipate the heat in the
windings. Refer to the prime mover manual for shutdown and cool-down
procedures.
Page 22
Maintenance
Schedules
A regular preventive maintenance schedule will ensure peak
performance, minimize breakdowns and maximize generator life. The
schedule listed below is a guide for operating under standard conditions.
Specific operating conditions may require reduced or increased
maintenance intervals. Also, if there is a different or more specific
schedule for your generator than the schedule provided below, it will be
included as a supplement to the manual package.
Every day
Visually check generator bearing housings for any sign of oil seepage.
Check the operating temperatures of the generator stator windings.
Check the control panel voltmeter for proper stability and voltage output.
Monitor the power factor and generator loading during operation.
With generators that have sleeve oil bearings, check the operating
temperatures and sight glass levels (if applicable).
Every week
Visually inspect the bearing exterior for dirt, and clean if necessary.
Inspect any generator air filters for build up of contaminants, and clean or
replace as required
Every 2000 hours or 6 months of operation
Remove generator outlet box cover. Visually inspect the stator output
leads and insulation for cracking or damage. Check all exposed electrical
connections for tightness. Check transformers, fuses, capacitors, and
lightning arrestors for loose mounting or physical damage. Check all lead
wires and electrical connections for proper clearance and spacing.
Clean the inside of the outlet box, air screens, bearing housings, and air
baffles with compressed air and electrical solvent if needed.
With generators that have ball or roller bearings, check machine
vibrations and bearing condition with a spectrum analyzer or shock
pulse.
Regrease the regreaseable-type bearings. With generators that have
sleeve oil bearings, inspect bearing oil for proper levels and clarity.
Page 23
Warning: Do not service the generator
or other electrical machinery without deenergizing and tagging the circuits as out of
service. Dangerous voltages are present,
which could cause serious or fatal shock.
Every 8000 hours or 1 year of operation
Check insulation resistance to ground on all generator windings,
including the main rotating assembly, the main stator assembly, the
exciter field and armature assemblies, and the optional PMG assembly.
Check the space heaters for proper operation.
Check the rotating rectifier connection tightness.
With generators that have sleeve oil bearings, replace the bearing oil.
Every 12,000 hours or 3 years of operation
For units with split roller bearings, remove the upper flange cap and the
upper outer race and remove the old grease. Inspect the bearing, re-pack
with grease and re-torque the roller bearing cage if it is equiped with
Allen screws. See the roller bearing manual for instructions.
Every 20,000 hours or 3 years of operation
With generators that have sleeve oil bearings, perform a sleeve bearing
inspection to include the removal of the upper bearing housing and
bearing liner to inspect the liner, shaft journal, and seal surfaces for wear
or scoring. See the sleeve bearing manual for instructions.
Remove the endbrackets, and visually inspect the generator end windings
for oil or dirt contamination. Excessive contamination may necessitate
surface cleaning with compressed air and electrical solvent.
Inspect the fan and fan hub for damage.
Every 30,000 hours or 5 years of operation
(Contact Kato Engineering for assistance)
Disassemble the generator (this includes rotor removal).
Clean the generator windings using either (depending upon the severity
of contamination) 1) compressed air and electrical solvent or 2) degreaser and high pressure hot water wash. Dry the windings to acceptable
resistance levels (see the dry out procedure).
Inspect the rotor shaft bearing journals for wear or scoring.
With generators that have ball or roller bearings, disassemble and inspect
the bearings, replace if necessary.
With generators that have sleeve bearings, replace the bearing liners and
oil seals.
Page 24
Maintenance procedures
Visual inspection methods of windings
Electric machines and their insulation systems are subjected to
mechanical, electrical, thermal and environmental stresses that give rise
to many deteriorating influences. The most significant of these are the
following:
Thermal aging: This is the normal service temperature deteriorating
influence on insulation.
Over temperature: This is the unusually high temperature of operation
caused by conditions such as overload, high ambient temperature,
restricted ventilation, foreign materials deposited on windings, and
winding faults.
Overvoltage: This is an abnormal voltage higher than the normal service
voltage, such as caused by switching or lightning surges or non-linear
loads. Operating above rated nameplate voltage will reduce insulation
life.
Contamination: This deteriorates electrical insulation by 1) conducting
current over insulated surfaces 2) by attacking the material to reduce
electrical insulation quality or physical strength, or by 3) thermally
insulating the material so the generator operates at higher than normal
temperatures. Such contaminants include water or extreme humidity, oil
or grease including unstable anti-wear and extreme pressure lubricants,
conducting and non-conducting dusts and particles, industrial chemicals
such as acids, solvents, and cleaning solutions.
Physical damage: This contributes to electrical insulation failure by
opening leakage paths through the insulation. Physical damages can be
caused by physical shock, vibration, over-speed, short-circuit forces or
line starting, out-of-phase paralleling, erosion by foreign matter, damage
by foreign objects and thermal cycling.
Ionization effects: Ionization (corona), which may occur at higher
operating voltages, is accompanied by several undesirable effects such as
chemical action, heating, and erosion.
To achieve maximum effectiveness, a direct visual inspection program
initially to those areas that are prone to damage or degradation caused
by the influences listed above. The most suspect areas for deterioration
or damage are 1) ground insulation, which is insulation intended to
isolate the current carrying components from the non-current bearing
components, and 2) support insulation, which includes blocks and slot
wedges and are usually made from compressed laminates of fibrous
materials, polyester, or similar felt pads impregnated with various types
of bonding agents. Check for the following:
Page 25
Deterioration or degradation of insulation from thermal aging:
Examination of coils reveal general puffiness, swelling into ventilation
ducts, or a lack of firmness of the insulation, suggesting a loss of bond
with consequent separation of the insulation layers from themselves or
from the winding conductors or turns.
Abrasion: Abrasion or contamination from other sources, such as
chemicals and abrasive or conducting substances, may damage coil and
connection surfaces.
Cracking: Cracking or abrasion of insulation may result from prolonged
or abnormal mechanical stress. In stator windings, looseness of the
bracing structure is a certain sign of such phenomena and can itself cause
further mechanical or electrical damage if allowed to go unchecked.
Erosion: Foreign substances impinging against coil insulation surfaces
may cause erosion.
Warning: When using cleaning solvents,
ensure adequate ventilation and user
protection.
Cleaning
Exterior: Wipe loose dirt from the exterior with a clean, lint-free cloth.
Remove stubborn accumulations of dirt with a detergent or solvent
that won’t damage the paint or metal surfaces. Use a vacuum to clean
ventilating ports.
Windings, assembled machines: Where cleaning is required at the
installation site and complete disassembly of the machine is unnecessary
or not feasible, pick up dry dirt, dust or carbon with a vacuum cleaner to
prevent the redistribution of the contaminant. A small non-conducting
nozzle or tube connected to the vacuum cleaner may be required to reach
dusty surfaces or to enter into narrow openings. After most of the dust
has been removed, a small brush can be affixed to the vacuum nozzle to
loosen and allow removal of dirt that is more firmly attached.
After the initial cleaning with a vacuum, compressed air may be used to
remove the remaining dust and dirt. Compressed air used for cleaning
must be clean and free of moisture or oil. Air pressure or velocity must
be adequately controlled to prevent mechanical damage to the insulation.
Disassembly of the machine and more effective cleaning by a qualified
Kato technician may be required if the above described field service
cleaning procedures do not yield effective results.
Windings, disassembled machines: Take an initial insulation resistance
reading on the machine to check electrical integrity. The high pressure
hot water wash method of cleaning, which sprays a high velocity
jet of hot water and water containing a mild detergent, is normally
effective in cleaning windings, including those subjected to flooding
or salt contamination. Use multiple sprays with clean water to remove
or dilute the detergent following the detergent spray. Dry the machine
Page 26
until acceptable insulation resistance values are obtained at room
temperature. See the insulation resistance procedures below for minimum
recommended values.
Electrical contacts: Clean electrical contacts, switch contacts and
terminals with an approved contact cleaner. Do not file contacts.
Insulation resistance tests at low voltage
Insulation tests are conducted for two reasons: to discern existing
weakness or faults or to give some indication of expected service
reliability.
Insulation resistance tests are based on determining the current through
the insulation and across the surface when a DC voltage is applied. The
leakage current is dependent upon the voltage and time of application,
the area and thickness of the insulation, and the temperature and
humidity conditions during the test.
The insulation resistance test is used to determine the insulation
condition prior to application of more extensive testing measures. Refer
to the following electrical measurement procedures for testing detail.
Contact Kato Engineering.
Exciter field (stator) and PMG armature (stator)
1. Disconnect the exciter leads from the terminals in the terminal box or
the voltage regulator.
2. Connect exciter leads to one clamp of 500-volt megger, and connect
the other clamp to the generator frame.
3. Apply 500 V from the megger, and measure the resistance reading
after 1 minute. The reading must be a minimum of 50 megohm. If it
is not, refer to the cleaning or dry out procedures.
4. Ground the exciter field leads to the generator frame for several
minutes after the megger has been disconnected. This will allow the
voltage build up to be properly discharged.
Exciter armature
1. Disconnect the exciter armature leads from the rotating rectifiers.
2. Connect the leads of the exciter armature to one clamp of a 500-volt
megger, and connect the other clamp to a suitable connection on the
shaft.
3. Apply 500 V from the megger, and measure the resistance reading
after 1 minute. The reading must be a minimum of 50 megohms. If it
is not, refer to the cleaning or dry out procedures.
Page 27
Caution: The insulation resistance tests are
usually made on all or parts of an armature
or field circuit to ground. They primarily
indicate the degree of contamination of the
insulating surfaces or solid insulation by
moisture and other conducting influences
and will not usually reveal complete or
uncontaminated ruptures.
Note: The insulation resistance value
increases with decreasing winding
temperatures. All readings must be
corrected to winding temperatures. Use
Table 4 for converting megger readings to
other temperatures (e.g., 100 megohms at
50º C is converted to 170 megohms: 1.7 x
100).
Winding
Temp
(ºC)
Conversion
factor
10
20
30
40
50
60
70
80
90
100
110
120
0.23
0.37
0.6
1
1.7
2.7
4.5
7.5
14
23
38
61
Table 4: Temperature conversion
factor for resistance readings
Warning: Never apply the megger to the
rotating rectifier, the voltage regulator, or
generator accessories (e.g., temperature
detectors, space heaters).
Note: New generators should measure
about 100 megohms of insulation resistance when meggered. Generators that
read 50 megohms or less should be dried
out according to the dry out procedures
here. Generators with insulation resistance
readings of 10 megohms or less must be
cleaned and then dried out.
4. Ground the exciter leads to the shaft after disconnecting the megger.
This will allow the voltage build up to be properly discharged.
Main rotor
1. Disconnect the generator field leads from the positive and negative
terminals of the rotating rectifier assembly.
2. Connect the positive and negative leads to one clamp of the 500-volt
megger, and connect the other clamp to the shaft.
3. Apply 500 V from the megger, and measure the resistance reading
after 1 minute. The reading must be a minimum of 50 megohms. If it
is not, refer to the cleaning or dry out procedures.
4. Ground the field leads to the shaft after disconnecting the megger.
This will allow the voltage build up to be properly discharged.
Main stator
1. Disconnect power connections and all control apparatus from the
generator terminals.
2. Measure insulation resistance of each phase separately with the two
other phases shorted to the frame.
3. Use a 500-volt megger connected between the lead(s) of the phase to
be measured and generator frame. The minimum 1-minute insulation
resistance must not be less than 50 megohms.
4. Ground the leads to the frame after the 1-minute megger test. This
will allow the voltage build up to be properly discharged.
Caution: Do not apply heat too rapidly. It
could damage the windings.
Dry out procedures
If the insulation resistance readings are below the recommended minimum values specified previously, use one of the dry out procedures
described below. Select the procedure based on the size and location
of the unit, available equipment, and experience of personnel. Before
drying, remove the voltage regulator, and cover all inlet and discharge
openings. Provide an opening at the top of the machine, preferably at the
fan end, for moisture to evaporate.
Drying with external heat: Place heat lamps, space heaters (in addition
to the ones already supplied) or a steam pipe near the windings. Monitor
winding temperatures. Raise winding temperature gradually at a rate
of 50° F (28° C) per hour up to 200° F (93° C). Measure insulation
resistance at 1-hour intervals. Typically the insulation resistance will
slowly drop while the temperature is coming up, and then gradually
increase and level out.
Page 28
Drying with AC current in the armature: Short circuit the generator
terminals. Provide DC excitation to the brushless exciter field winding.
Insert a current transformer and an ammeter to read full load current.
Run the generator at rated speed. Apply excitation to the exciter field
until rated current is developed. Monitor winding temperatures until they
stabilize. Continue running until insulation resistance values level off.
Monitor winding temperatures. Raise winding temperature gradually at
a rate of 50° F (28° C) per hour up to 200° F (93° C). Measure insulation
resistance at 1-hour intervals. Typically, the insulation resistance will
slowly drop while the temperature is coming up and then gradually
increase and level out.
Bearing lubrication
Sleeve bearings: Lubricate the bearings in accordance with the
lubricating instructions attached to the generator and the bearing
lubrication instructions, which are provided in the manual package as
supplementary material.
Roller bearings: In applications where regreaseable bearings are used,
grease fill fittings and relief valves are incorporated into the bearing
housing. Lubricate the bearings in accordance with the lubricating
instructions attached to the generator.
Rectifier tests
If a failure of a rectifier is suspected, remove the exciter cover. Remove
the nut and washer holding the rectifier in the heat sink, and remove the
diode lead wire. Lift the rectifier from the heat sink (see figure 20 for
an overview). Test the entire rectifier with an ohmmeter or test lamp as
follows:
Negative
Positive
Positive
Figure 20: Rectifier
Ohmmeter: Connect the ohmmeter leads across the rectifier in one
direction (see Figure 21). Note the meter reading. Reverse the leads, and
note the meter reading. The meter should indicate a low resistance when
the leads are across the rectifier in one direction and a high resistance
when the leads are across the rectifier in the opposite direction. A low
resistance in both directions indicates a short. A high resistance in
bothdirections indicates an open rectifier.
Page 29
Test lamp: Connect the leads of a test lamp, consisting of standard
flashlight batteries and a flashlight and built, as shown in Figure 22,
across the rectifier in one direction. Then reverse the leads. The light
should light in one direction but not the other. If the light lights in both
directions, the rectifier is shorted. If the light does not light in either
direction, the rectifier is open.
Cathode
Ohmmeter
Anode
Reverse
diode
Standard
diode
Figure 21: Testing the rotating rectifier with an
ohmmeter
Replace defective rectifiers with rectifiers of the same operating
characteristics as rectifiers installed in the generator at the factory.
Order rectifiers by part number, including the model and type of exciter
as well as the generator serial number.
Caution: Do not pound on the rectifier or
armature windings.
Surge protectors may be included on the rotating rectifier assembly.
Disconnect one lead of the surge protector, and connect the leads of
an ohm meter or makeshift test lamp, consisting of standard flashlight
batteries and a flashlight and built as shown in Figure 21, across the surge
protector in either direction.. If the light comes on, the surge protector
is defective. Order surge protectors by part number, including the model
and type of exciter as well as the generator serial number. Following
replacement, make sure that the revolving field, exciter armature, and
rotating diode leads are properly secured.
Figure 22: Test lamp
Page 30
Assembly and disasembly of generator
Note: The following procedures are meant
to be a general guide. Procedures for your
unit may vary.
Diasassembly
Remove outlet box covers and disconnect generator load leads. Tag
leads and terminals to make certain leads are correctly connected when
unit is reassembled. Disconnect the other electrical connections (current
transformers, potential transformers, RTDs, AVR and governor power
supply inputs and outputs, space heaters).
Shut down the oil supply system, and disconnect it from the generator. (if
applicable).
Remove bolts from coupling to separate the coupling halves.
Remove bolts securing generator base pads to engine-generator base or
foundation.
If required, move generator to location affording sufficient room for disassembly. Attach slings or chains to lifting eye bolts to move generator.
See section “Installation” for handling precautions.
Remove exciter cover. Disconnect alternator field leads, remove exciter
armature and PMG retaining bolts. Remove the PMG rotor. The rotor
should be removed by grasping the inside magnets and then pulling
quickly and sharply straight back, overcoming the magnetic pull of the
PMG rotor toward the PMG armature. Wrap PMG rotor in plastic to
avoid contamination with metal filings.
Remove clips securing exciter field leads to exciter frame, generator
frame and generator endbell.
Note: If your unit has split roller bearings
instead of sleeve bearings, please consult
your bearing manual that came with your
manual package.
Warning: Ensure the generator has stopped
and is de-energized before disassembly.
Warning: Use a hoist and slings or chains
to support components during removal. Use
lifting devices that are selected for generator
component weights. Be extremely careful
not to damage components.
Caution: Ensure the generator field wires
are flat in the wireway so they don’t tear
during pulling. Do not pull on the edges of
the heat sinks or on the exciter armature
windings.
Warning: Pull the exciter-PMG frame-stator
straight out. The assembly may pull toward
the PMG.
Disconnect the leads from snubber where they terminate at the rectifier.
Remove the exciter armature retaining bolts (on the end of the shaft), and
remove the rotor washer. Then remove the snubber assembly.
Remove the exciter armature and rectifier as a unit in the following
manner:
a.
Disconnect the generator field (rotor) leads from the positive
(+) and negative (-) exciter armature lead terminals located on
the rotating rectifier assembly.
b.
Using a hoist and strap, slide out and remove the exciter
armature and rectifier assembly, which is keyed onto the shaft.
Remove the exciter-PMG frame-stator.
a.
Connect a hoist to the lifting eyes.
Page 31
Caution: Do not pull on the edges of the
rectifier or on the exciter armature windings.
b.
Unbolt the exciter support brackets where they attach to the
exciter-PMG frame-stator. (If applicable).
Remove the exciter-PMG frame-stator mounting bolts, and remove the
exciter-PMG frame-stator.
Note: If your unit has split roller bearings
instead of sleeve bearings, please consult
your bearing manual that came with your
manual package.
Caution: Make sure that the work place is
clean. Contamination and damage to the
bearing, especially of the running surfaces,
reduce operating quality and could lead to
premature damage or failure.
Note: The outside seal carrier on the drive
end bearing does not have split line bolts.
Remove the opposite-drive end bracket.
Dismantle the bearings.
a.
Twist the knob on the spring-loaded holders, and pull the
RTDs out of the bearing hangers.
b.
Disconnect the grounding brush, and dismantle the grounding
brush bracket assembly from the inside of the drive end bearing.
c.
Dismantle all air tubes and oil supply lines.
d.
Remove the bracket over the bearing on the opposite-driveend side.
e
Dismantle the outboard seal carrier and inboard seal carrier.
f.
Loosen the bolts that connect the carriers to the housing, and
remove them.
g.
Loosen and remove the split line bolts.
h.
Remove simultaneously, in the axial direction, both the top
and bottom halves of the seal carriers.
i.
Remove the garter springs and the gap seal and labyrinth seal.
j.
Remove the gasket.
Dismantle the top half of the bearing housings.
a.
Remove the split-line bolts.
If necessary, tap the bearing housing lightly with a rubber or fiber mallet
to loosen it. On the opposite-drive-end side, lift the top part of the
bearing housing until it can be moved in an axial line over the bearing
liner without touching it, and then move it out. On the DE side lift the
housing out and over the top of the generator.
On the opposite-drive-end side, unscrew the split line screws in the
bearing liners. Screw in two lifting eyes in the top, and lift the top half
off the bearing liners.
Page 32
On the opposite-drive-end side, remove the bottom halves of the bearing
liners.
Lift the shaft up slightly (about 0.005 inch) on both ends of the rotor
to the point where the shaft and bottom half of the bearing liner do not
touch each other.
Rotate the bottom half of the liner 180º so it is facing upward (where the
top half of the liner was). Move the shaft as necessary.
Slide the liner forward so it rests on the bottom bearing housing’s top
surface.
Use lifting eyes and hoist to remove the liner. Lower the shaft.
Caution: Be careful to not damage running
surfaces.
Warning: Before transport or lifting bearing
components, check if the eye bolts are tight.
Insecure eyebolts could result in the part
coming loose and falling Make sure the
eyebolts are not exposed to bending stress,
otherwise they could break. Make sure the
lifting equipment does not contact the seal
and running surfaces of the shaft.
Remove the bottom half of the bearing housings from the frame.
Remove the fan blade clamps and blades on the drive end
Remove the opposite-drive end baffle.
Note: On the DE side, you can remove
the bearing liners after the rotor has been
removed.
Float out the rotor.
Fit a pipe over the shaft. Depending upon the space available, you may
have to use a pipe that can be assembled, adding an additional piece
during each stage of movement outward. See Figure 23.
a.
Attach slings around the pipe on one end and around the shaft
on the opposite end.
b.
Lift up the rotor, and move it out, gently resting the rotor on
the stator as the slings are moved down the pipe for the next
lifting stage.
Remove the drive-end side bearing liners from the shaft.
Page 33
Caution: Make sure the RTD is removed
before rotating the bearing liner.
Caution: Make sure the pipe is strong
enough to support the weight of the rotor
and that it does not have rough edges on
the inside, which could damage the shaft.
To prevent tension on the shaft, put slings
around the largest shaft step possible. Make
sure the rotor does not hit the stator.
Caution: Make sure all components are
clean before assembly. Make sure all
gaskets have not deteriorated and are
positioned correctly.
Assembling the generator:
Use standard torque specifications per Table 5 unless otherwise specified.
Install the bearing liners on the drive-end side of the shaft.
Note: If your unit has split roller bearings
instead of sleeve bearings, please consult
your bearing manual that came with your
manual package.
Caution: Make sure the pipe is strong
enough to support the weight of the rotor
and that it does not have rough edges on
the inside, which could damage the shaft.
To prevent tension on the shaft, put slings
around the largest shaft step possible. Make
sure the rotor does not hit the stator.
a.
Make sure the surfaces are clean. Apply STP Oil Treatment
over the running surface on the shaft where the liner will sit.
b.
Make sure the engraved numbers on the top and bottom halves
correspond and are on the same side. Mate the top liner over the
bottom liner on the shaft.
c.
Put Loctite 242 on the split line screws, insert the screws, and
tighten.
Float in the rotor.
a.
Move the rotor up and in line with the stator. Fit a pipe over
the drive end of the rotor. Depending upon the space
available, you may have to use a pipe that can be disassembled,
taking off an additional piece during each stage of movement
inward.
b.
Attach slings around the pipe on one end and around the shaft
on the opposite end.
c.
Lift up the rotor, and move it in, gently resting the rotor on the
stator as the slings are moved down the pipe
Put a bead of premium siliconized acrylic latex caulk (or equivalent)
over the opposite-drive-end baffle mating surface, and install the baffle.
Figure 23: Floating the rotor
Page 34
Assemble the bearings as follows:
Caution: Make sure all components are
clean before assembly.
Carry out these operations very carefully as to not damage the shaft or
bearing components.
Note: Torque fasteners to the values specified in Table 5 unless otherwise specified.
Install the liner insulators on the inside diameter of the top and bottom
bearing housing of both bearings. Each housing gets two insulators.
a.
Fit up the insulators in the liner seat, and crease the outside
edge over the lip.
b.
Trim the top of the insulators flush with the mating surface (of
the top and bottom halves of the housing).
c.
Make sure the insulator surface is clean. Mix Metallon twopart epoxy in equal parts, and brush it over the track.
d.
Peel the backing off, and put the insulators in place. Press
them tightly on the track, and place the liners (or fixtures) in the
housings to maintain good compression. Let the epoxy set for 12
hours. Make sure it has no voids or air bubbles.
Install the bottom bearing housings. Before installing, brush Nox rust on
frame mating surfaces that will fit into bearing housing.
a.
On the opposite-drive-end side, lift up the ends of the shaft
slightly, so the bearing housing clears the shaft, and
bolt it in place on the frame.
b.
On the drive end side, lift the housing up and bolt it into place
on the frame.
Install the bottom half of the bearing liners on the opposite-drive-end
side.
a.
Lift the shaft up slightly (about 0.005 inch) on both ends of the
rotor to the point where shaft and bottom half of the liner do not
touch each other.
b.
Make sure the surfaces are clean. Apply STP Oil Treatment
over the running surface on shaft where the liner will sit.
c.
Set the liner on the shaft so it rests on the housing. Use
eyebolts for lifting. The ID numbers on the lining face outward.
d.
Remove the lifting eyes from the liner. Move the rotor gently
from side to side and up and down as necessary, and slide the
liner down into the housing. If the liner doesn’t turn easily, check
the position of the shaft and the alignment of the housing.
Lower the shaft onto the liner.
e.
Page 35
Caution: Remove all impurities or other
objects such as screws, nuts, etc., from
the bearing components. If left inside,
they could lead to bearing damage. To
prevent contamination, cover the bearing
components when they are not being
worked on.
Note: If no fixture is available to compress
the insulators, use the top liner for both
halves of the bearing. Make sure all tubes
and fasteners are in the liner to ensure a
smooth surface.
Install the top half of the bearing liner on the drive end side.
a.
Apply STP Oil Treatment on the running surface of the shaft
where the top half of the liner will sit.
b.
After making sure the engraved numbers on the top and
bottom halves correspond and are on the same side, place the top
liner over the bottom liner.
c.
Put Loctite 242 on the split line screws, insert the screws, and
tighten.
Install the top bearing housings.
a.
Apply STP Oil Treatment on the top of the bearing liner.
b.
Spread Loctite 587 Blue on the bottom housing where it will
mate with the top housing.
c.
Put the top housing in place, making sure the dowel pin in
the inside diameter of the top housing lines up with the pin hole
in the bearing liner. Put Loctite 242 on the split lines screws,
and fasten the housings together, leaving the screws snug but not
tight.
Torque the split line screws to 1100 ft-lbs.
Install the seal carrier assemblies.
a.
Cut the gasket, if necessary to fit it over the shaft. Coat it with
Loctite Hi-Tack gasket sealant or equivalent, and fit it over the
shaft.
b.
Attach the gap seal and labyrinth seal with the labyrinth
seal nearest the bearings. Put the two halves of the seals
together, and slip the garter springs around the seals to fasten
them. (The outside seal carrier on the drive end side only
gets a labyrinth seal.)
c.
Put Curil-T on the inside diameter of the seal carriers where
they will contact the seals, (one bead in the narrow (inside)
groove and one bead in each of the three wider (outside)
grooves. Also put Curil-T on the surface of the labyrinth seal on
both sides of the spring.
d.
Use Loctite 587 Blue to caulk the mating surface of the
bottom seal carrier (where it mates with the top half). Put gasket
sealant on the flange surface of the seal carrier where it will mate
with the bearing hanger. Also, put gasket sealant on the mating
surface of the bearing hanger
Page 36
e.
Set the top half of the seal carrier over the seals. Make sure the
notch in the top of the seal lines up with the opening in the seal
carrier. Attach the bottom half of the seal. Put Loctite 242 on the
threads of the two split line screws. Add a flat washer, insert, and
tighten.
f.
Slide the seal carrier assembly up against the gasket and
bearing hanger. Bolt (with flat and lock washer) the seal carriers
to the bearing hanger, and tighten.
Install the air tube and oil supply lines.
Install the RTDs in the spring-loaded holders.
Before operating the generator, start the oil flow to the bearings, and
follow the startup procedure to ensure the bearing is functioning properly
and so that damage to the bearing doesn’t occur.
Brush Nox rust on frame mating surface that will fit into the oppositedrive end bracket (which fits over the top of the top bearing housing),
and attach the opposite-drive end bracket and tighten.
Install the PMG rotor.
a.
b.
Paint the shaft journal that the PMG rotor butts against with
Nox rust. Put a coat of standard grease on journal that the PMG
rotor fits over. Put the PMG key in the slot, and slide the PMG
rotor in place.
Put the lock washer over the shaft. Put on the locknut on, and
tighten it with a spanner wrench until it doesn’t move anymore.
Bend one tab of the locknut over to lock the locknut into place .
Attach the exciter-PMG frame-stator.
a.
Apply Nox rust to the machined surface on the bearing hanger
where the exciter-PMG frame-stator will mount.
b.
Attach the exciter-PMG frame-stator to the bearing hanger
mounting surface and exiter brackets.
Check the air gap between the PMG rotor and PMG stator.
a.
b.
Measure completely around the gap between the PMG rotor
and PMG stator with a feeler gauge.
Keep the gage at the tightest point, and turn the generator over
to measure the air gap as the rotor turns.
Attach the exciter armature assembly.
Page 37
Exciter armature Minimum air
diameter (in.)
gap (in.)
5 3/4
9 7/8
12 1/2
16 1/4
0.014
0.014
0.018
0.035
Table 5: Exciter air gap
Note: To measure air gap, measure completely around the gap between the exciter
armature and exciter field with a feeler
gauge. Keep the gauge at the tightest point,
and turn the generator over to measure the
air gap as the rotor turns.
Caution: Do not pry on the fan.
Caution: Do not pound on the rectifier.
a.
Brush Nox rust on the lock nut and the exposed PMG shaft
journal.
b.
Put the armature key in the slot on the shaft.
c.
Position the exciter armature-rotating rectifier assembly in line
with the shaft, and turn the assembly to the position where the
keyway in the exciter sleeve is in line with the key in the
generator shaft.
d.
With hand force, push the armature assembly over the shaft,
so the end of the sleeve is against the shoulder on the shaft. It
may be necessary to tap lightly on the exciter sleeve in
order to move the assembly over the key. Use a fiber or
rubber mallet. If installation is still a problem, use a heat
gun to expand the exciter sleeve.
Check the air gap between the exciter armature and exciter stator.
a.
Measure completely around the gap between the exciter
armature and exciter stator with a feeler gauge.
b.
Keep the gage at the tightest point, and turn the generator over
to measure the air gap as the rotor turns. Minimum air gap is
0.035 inch.
Connect the field leads to the rotating rectifier.
Put the snubber assembly on the end of the armature. Install the washer
and bolt it to the armature sleeve. Then install the speed pickup gear.
Line up the bolt holes and with the washer and snubber assembly, and
bolt in place. Connect the snubber leads to the terminals of the rectifier.
Attach the exciter cover.
Install the fan blades and fan blade clamps on the drive end.
Connect the air temperature RTDs.
Mount the generator to the prime mover, and make the electrical
connections as described earlier..
Connect the oil supply lines.
Page 38
Troubleshooting Guide
(corrective maintenance)
Warning: Problems left uncorrected can
result in injury or serious damage, which can
result in costly repairs and downtime.
Between regular preventive maintenance inspections, be alert for
any signs of trouble. Correct any trouble immediately. See Table
6 for symptoms, causes and remedies.
Symptom
Cause
Remedy
No Voltage
Open voltage regulator, circuit breaker or
fuses
Check. Reset the circuit breaker or replace
fuses if open.
Overvoltage, undervoltage, or overload
devices tripped (when protective devices
are incorporated into the circuit)
Check for the cause of the abnormal condition.
Correct any deficiencies. Reset devices.
Check the generator nameplate for nominal
operating values.
Open circuit in exciter field
Check continuity of shunt field and leads
to voltage control. (Use ohmmeter or
Wheatstone bridge) If open in field coils,
remove exciter field assembly and return
assembly to factory for repair.
Loss of residual magnetism in exciter
field poles
Restore residual magnetism or flash field. When
the voltage regulator is a model that requires
flashing, install an automatic field flashing
system.
Open circuit in stator windings
Check for continuity in the windings. Return the
generator to the factory for repair if open.
Malfunction of automatic voltage
regulator
See troubleshooting of voltage regulator.
Correct deficiencies.
Short-circuited generator output leads
Clear lead to restore voltage buildup.
Open in rotating rectifiers
Check rotating rectifiers, and replace if
open.
Open in generator field
Check for continuity and return rotor to
factory for repair if field coils are open.
Low voltage
Shorted or grounded surge protector
Check for shorts or grounds. Replace .
Shorted or grounded rotating rectifier
Check for shorts grounds. Replace or repair.
Shorted or grounded exciter armature
Check for shorts or grounds. Replace or repair.
Shorted leads between the exciter armature
and generator field
Test and repair.
Incorrect stator connections
Check the connections, and reconnect
Table 6: Troubleshooting
Page 39
Symptom
Cause
Remedy
Low voltage
(cont.)
Improper adjustment of voltage adjust
rheostat
Adjust rheostat.
Excessive load
Reduce load. With three-wire, single-phase and
four-wire, three-phase generators, the load on
each leg must be as evenly balanced as possible
and must not exceed the rated current on any leg.
Line loss
Increase the size of the line wire.
High resistance connections (hot)
Make better connections.
Shorted main or exciter field
Test the field coils for possible short by
checking resistance with an ohmmeter or
resistance bridge. Return the rotor assembly
to the factory for repair if field coils are shorted.
Low power factor
Reduce inductive (motor) load. Some AC
motors draw approximately the same
current regardless of load. Do not use
motors of larger horsepower rating than
is necessary to carry the mechanical
load.
Weak field due to operating in a warm
temperature
Improve the ventilation of the generator.
Field current can be increased providing
the generator temperature rating
stamped on the nameplate is not
exceeded.
Defective rectifiers in rectifier assembly
(stationary)
Check rectifier assembly. Replace
defective fuses or rectifiers.
Excessive load
Reduce load to rated value.
Bearing overheating
Inspect the bearing.
Improper speed of engine driven
generator set due to defective governor,
ignition system, or carburetor
Check and correct deficiencies.
Voltage regulator not operating properly
Check the regulator. Adjust, repair or replace.
Prime mover speed fluctuating
Check frequency and voltage of incoming
power when the generator set is motor
driven. Check engine governor on
engine-driven generator sets.
Loose internal or load connections
Tighten all connections.
Generator overloaded
Reduce load to rated value.
DC excitation voltage fluctuating
Trace DC excitation circuit. Correct any
defects.
Overspeed
Correct speed of prime mover.
Voltage regulator not operating properly
Check the regulator. Adjust, repair or replace.
Improper adjustment of voltage adjust
rheostat or voltage regulator
Adjust rheostat and/or voltage regulator.
Voltage regulator not operating properly
Check the regulator. Adjust, repair or replace.
Fluctuating
voltage
High voltage
Page 40
Symptom
Cause
Remedy
Overheating
Clogged ventilating screens and air
passages
Clean all screens and air passages.
Dry or defective bearings
Inspect bearings.
Coupling misaligned
Align the generator set.
Generator field coils shorted or
grounded
Test field coils for shorts. Replace
shorted rotor or return it to the factory for
repair.
Unbalanced load or overload, low PF
Adjust load to nameplate rating.
Defective or dry bearings
Inspect bearings.
Misalignment of generator and prime
mover
Align the generator set.
Generator not properly mounted
Check mounting. Correct defective
mounting.
Transfer of vibration from another
source
Isolate the generator set from the source of
vibration.
Vibrations
Page 41
Appendices
List of equipment required for installation and maintenance:
Test equipment
Ammeter
Multimeter
Thermometer
Megger
Resistive Bridge
Notes
Clamp-on, 0 to 500 amp range for measuring of electrical current.
Digital, for measuring voltage, current, frequency and resistance.
For measuring temperature in Celsius
To measure insulation resistance.
To measure resistance of windings.
Special tools
Bearing puller
Exciter puller
For changing bearing.
For pulling exciter armature
Standard tools
Cable tool
Flashlight
Grease gun
Hammer
Lamp (incandescent)
Screwdrivers
Screwdrivers
Wrench
Wrench
Wrench set
Wrench set
Wrench set
Vacuum
Crimping
As required
For lubricating bearings
Soft-faced
Safety light
Standard, sized as required
Phillips, sized as required
Adjustable, 12-inch
Torque 0 to 100 ft-lb
Allen, 1/8 to 1/2 inch
Socket, 1/4 to 1 inch with 3/8 and 1/2 inch drive
Standard, open-end/box-end combination sized 1/4 to 1 inch
Electric with nonmetallic nozzle
Materials
Air
Corrosion inhibitor
Covering material
Detergent
Gloves
Gloves
Heaters
Plastic
Rags
Water
Tags
Compressed, dry.
Nox-Rust VC #10 Oil or equivalent
Waterproof desiccant bags for protection from
moisture during long-term equipment storage
As required for cleaning
Chemical-protective
Electrical-protective
Space Heater, for eliminating excess moisture in damp areas and dry
out of motor or generator windings
Protection for long-term storage
As required for cleaning
Warm and clean, for cleaning
Warning and cautions
Page 42
Grade 2
Size
Grade 2
Grade 8
Grade 5
ASTM & SAE grade markings
Class 10.9
Class 8.8
Metric grade markings
1-NM = 0.737 ft-lbs. = 8.85 in-lbs.
in-lbs.
ft-lbs
Min.
Max.
4-40
3.3
6-32
Min.
Max.
4.7
0.4
0.5
6.1
8.7
0.7
1.0
8-32
12.5
17.8
1.0
1.5
1.4
2.0
Size
10-32
20.8
29.7
1.7
2.5
2.3
3.4
50.4
72.0
4.2
6.0
5.7
8.1
5/16-18
92.4
132.0
7.7
11.0
10.4
14.9
3/8-16
159.6 228.0
13.3
19.0
18.0
25.8
7/16-14 252.0 360.0
21.3
30.0
28.5
40.7
1/2-13
31.5
45.0
42.7
61.0
9/16-12
378.0 540.0
46.2
66.0
62.6
89.5
5/8-11
65.1
93.0
88.3
126.1
3/4-10
105.0 150.0 142.4 203.4
7/8-9
141.4 202.0 191.7 273.9
Grade 8
ft-lbs
N-M
Min.
Max.
Min.
Max.
Min.
Max.
1/4-20
60
84
5
7
6.8
9.5
5/16-18
120
192
10
16
13.5
3/8-16
228
336
19
28
7/16-14
360
528
30
1/2-13
540
804
45
9/16-12
792
1152
5/8-11
1104
3/4-10
Size
in-lbs.
ft-lbs
Min.
Max.
10-32
36
49
21.7
1/4-20
72
144
6
25.8
38
5/16-18
156
276
44
40.7
59.7
3/8-16
324
67
61
90.8
7/16-14
480
66
96
89.5
130.2
1/2-13
1608
92
134
124.7 181.7
2052
2724
171
227
7/8-9
3372
4368
281
1-8
5160
6432
430
in-lbs.
Min.
N-M
Min.
Max.
4.1
5.5
12
8.1
16.3
13
23
17.6
31.2
444
27
37
36.6
50.2
720
40
60
54.2
81.3
780
1020
65
85
88.1
115.2
9/16-12
1140
1500
95
125
128.3 169.5
231.8 307.8
5/8-11
1560
2040
130
170
176.8 230.5
364
381
493.5
3/4-10
2760
3600
230
300
311.8
536
583
726.7
7/8-9
4320
5760
660
480
488.1 650.8
1-8
6720
8640
560
720
759.3 976.2
Class 8.8
Size
Max.
1/4-20
Grade 5
in-lbs.
Min.
N-M
Max.
406.7
Class 10.9
ft-lbs
N-M
Min.
Max.
Min.
Max.
Min.
Max.
M4
20
32
1.7
2.7
2.3
3.6
M5
40
64
3.3
5.4
4.5
7.3
M6
65
113
5.4
9.4
7.3
M8
168
264
14
22
M10
324
516
27
M12
612
900
51
M14
960
1428
Size
in-lbs.
ft-lbs
Min.
Max.
Min.
M4
22
36
M5
46
74
12.8
M6
77
20
30
M8
43
38
58
75
69
N-M
Max.
Min.
Max.
1.8
3
2.5
4.1
3.8
6.2
5.2
8.4
122
6.4
10.2
8.7
13.8
192
288
16
24
22
32
M10
384
576
32
48
43
66
101
M12
672
996
56
83
77
112
1080
1554
80
119
109
161
M14
90
132
122
179
M16
126
184
170
250
M16
140
206
190
279
M18
183
243
248
330
M18
205
271
277
368
M20
263
341
357
463
M20
294
381
398
517
M22
367
457
497
619
M22
409
510
554
691
M24
465
580
631
787
Table 5: Recommended lubricated torque values. (If no lubricant is used, increase values by 25%.)
Page 43
Storage
If the generator is not installed in its operating location as soon as
received, store it in a clean, dry area, not subject to vibrations or sudden
temperature or humidity changes. Make sure the storage area temperature
is between 10º F (-12o C.) and 120º F (49o C.) and the relative humidity
is less than 60%. If possible, storage should be in an ambient temperature
of approximately normal room temperature. Protect the shaft from
corrosion by applying an anti-corrosion agent (Nox Rust). Cover the unit
with a durable cover.
Prepare units that cannot be stored in a temperature and humidity
controlled area as follows:
Install desiccant bags in the exciter cover and inside the end bells.
Vacuum seal the unit in a covering of plastic or other material designed
for that purpose.
Adequately tag the generator to ensure that preservative greases and
desiccant bags are removed before the unit is placed in operation.
If space heaters are supplied, energize them to keep condensation from
the windings.
Caution: Generators equipped with
sleeve oil bearings must have oil added
to the bearing prior to rotation. See the
bearing manual.
For storage longer than 2 months, lubricate the shaft by pouring oil in
the bearing or operate the lubrication system if the unit is so equiped and
rotate the shaft a minimum of 10 revolutions every 60 days.
When the unit is taken out of storage, check the insulation resistance
on all windings. Clean the shaft of anti-corrosion agent. (See the
maintenance section).
Page 44
Circulating Oil Lubrication
Refer to the plate labeled “Circulating Oil Lubrication” mounted on the generator for the
following information:
• bearing number
• pump capacity
• oil viscosity
• oil flow rate
• oil pressure
(This page intentionally left blank)
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LSN - FLSN
3-phase induction motors
for atmospheres containing explosive gases and dust
General manual: Installation and maintenance
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN - FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
IMPORTANT
These symbols
appear in this document whenever it is important to take special precautions during installation, operation,
maintenance or servicing of the motors.
It is essential that electric motors are installed by qualified, experienced and authorised personnel.
In accordance with the main requirements of the EC Directives, the safety of people, animals and property should be ensured when
fitting the motors into machines.
Particular attention must be given to equipotential ground or earthing connections.
The noise level of the machines, measured under standard conditions, conforms to the requirements of the standard and does not
exceed the maximum value of 85 dB(A) pressure at 1 metre.
The following preliminary precautions must be taken before working on any stationary device:
• Mains voltage disconnected and no residual voltage present
• Careful examination of the causes of the stoppage (jammed transmission - loss of phase
- Cut-out due to thermal protection - lack of lubrication, etc)
1 - PREFACE
1.1 - Training
Electric motors are industrial products. They must therefore be installed by qualified, experienced and
authorised personnel. The safety of people, animals and property must be ensured when fitting the motors into machines
(please refer to current standards).
Those persons required to work on electrical installations and equipment in zones where there is a risk of explosion must be specially
trained and authorised for this type of equipment.
They must be familiar with not only the electrical risks, but also with those that are due to the chemical properties and physical
characteristics of the products used in the installation (gas, vapour, dust), as well as the environment in which the equipment
operates. These elements determine the risk of fire and explosion.
In particular, they must be informed and aware of the reasons for the specific safety instructions in order to comply with them. For
example:
- Do not open when powered up
- Do not open when powered up in atmospheres containing explosive gas or dust
- Do not repair while powered up
- Do not move when on load
- Wait for a few minutes before opening
- Replace the seals tightly to ensure watertightness
Before commissioning, ensure compatibility of the information on the motor nameplate with the actual explosive
atmosphere and the operating zone.
NOTE:
LEROY-SOMER reserves the right to modify the characteristics of its products at any time in order to incorporate the latest
technological developments. The information contained in this document may therefore be changed without notice.
Copyright 2004: LEROY-SOMER
This document is the property of LEROY-SOMER.
It may not be reproduced in any form without prior authorisation.
All brands and models have been registered and patents applied for.
2
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN - FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
Dear Customer,
You have just acquired a LEROY-SOMER safety motor.
This motor benefits from the experience of one of the largest manufacturers in the world, using state-of-the-art
technology in automation, specially selected materials and rigorous quality control. As a result, the regulatory
authorities have awarded our motor factories the ISO 9000 - Edition 2000 international certificate.
We thank you for making this choice, and would ask you to read the contents of this manual.
By observing a few essential rules, you will ensure problem-free operation for many years.
LEROY-SOMER
1.2 - Conformity
Motors for potentially explosive atmospheres comply with:
- Directives ATEX 94/9/EC, 2006/95/EC and 93/68/EC (low voltage)
- Standards IEC-EN 60034, IEC-EN 60072, EN 60529
- IEC-EN 60079-0: Electrical apparatus for explosive gas atmospheres (general rules)
- IEC-EN 60079-15: Electrical apparatus for explosive gas atmospheres: protection type "n"
- IEC-EN 61241-0 and 1: Electrical apparatus for use in the presence of combustible dust; Part 0: General requirements and part 1
(protection by enclosures “tD”)
They are designed for use in potentially explosive atmospheres due to the presence of gas (G marking) or gas and dust (GD marking);
for each danger zone there is a corresponding class of equipment which should be marked as indicated in the following table:
These documents, included with the manual “Specific recommendations: Installation and Maintenance” (ref. 3607) are supplied with
the relevant products.
3
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN - FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
CONTENTS
INDEX
1 - PREFACE/TRAINING/conformity.............................2
Adjustments........................................................................13
Alarm - early warning...........................................................10
2 - MARKING.........................................................................5
3 - STORAGE........................................................................6
4 - COMMISSIONING............................................................6
5 - INSTALLATION................................................................7
5.1 - Position of the lifting rings........................................7
5.2 - Location - ventilation................................................7
5.3 - Coupling..................................................................8
6 - ELECTRICAL PARAMETERS - LIMIT VALUES..............9
6.1 - Limiting problems caused by motor starting............9
6.2 - Supply voltage.........................................................9
6.3 - Starting times..........................................................9
6.4 - Supply by frequency inverter...................................9
7 - USE................................................................................10
8 - SPECIAL OPERATING CONDITIONS........................... 11
8.1 - Use with a variable speed drive.............................12
9 - MECHANICAL ADJUSTMENTS....................................13
10 - SUPPLY CONNECTION...............................................15
10.1 - Terminal box.........................................................15
10.2 - Wiring diagram.....................................................16
10.3 - Direction of rotation..............................................16
10.4 - Earth terminal.......................................................16
10.5 - Connecting the cables..........................................17
11 - MAINTENANCE...........................................................18
11.1 - General information..............................................18
11.2 - Corrective maintenance: general information.......19
11.3 - Safety regulations.................................................20
11.4 - Routine maintenance...........................................20
11.5 - Reconditioning the bearings.................................22
11.6 - IP 55 or IP 65 protection for the motor...................22
11.7 - Troubleshooting guide..........................................23
11.8 - Preventive maintenance.......................................23
12 - DISMANTLING AND REASSEMBLY PROCEDURE...24
12.1 - LSN 80 to 160 MP/LR,
FLSN 80 to 132 motors........................................24
12.2 - LSN 160 M/L, LSN 180 MT/LR motors.................26
12.3 - LSN 180 L, LSN 200, LSN 225 ST/MT/MR,
LSN 250 MZ motors.............................................28
12.4 - LSN 250 ME, LSN 280 SC/MC motors.................30
12.5 - LSN 280 SK/MK, LSN 315 motors........................32
12.6 - FLSN 160 and 180 motors....................................34
12.7 - FLSN 200 to 225 ST motors.................................36
12.8 - FLSN 225 M to 280 motors...................................38
12.9 - FLSN 315 ST motors............................................40
12.10 - FLSN 315 M to 355 LD motors...........................42
12.11 - FLSN 355 LK to 450 motors................................44
4
Balancing..............................................................................8
Belts....................................................................................14
Built-in thermal protection....................................................10
Cable gland.........................................................................15
Cables -- cross-section................................................ 17 - 18
Capacitors...........................................................................10
Connection..........................................................................17
Connection diagrams...........................................................16
Corrective maintenance.......................................................19
Coupling........................................................................ 8 - 13
Coupling sleeves.................................................................13
Digistart............................................................................... 11
Direction of rotation..............................................................16
Draining condensation water...............................................20
Earth............................................................................. 11 - 16
Earth terminal......................................................................16
EC Declaration of Conformity................................................3
End shields..........................................................................22
European directives...............................................................3
Frequency inverter...............................................................12
Greasing - Grease nipples...................................... 6 - 21 - 22
Identification..........................................................................5
Inertia flywheel.....................................................................13
Installation and Maintenance manual....................................3
Insulation...............................................................................6
Lifting ring..............................................................................7
Location.................................................................................7
Mains connection....................................................... 15 to 18
Marking..................................................................................5
Materials handling.................................................................7
Mounting................................................................................6
Nameplate.............................................................................5
Power....................................................................................9
Power supply................................................................. 9 - 17
Protection............................................................................10
Pulleys.................................................................................14
Receipt..................................................................................5
Routine maintenance...........................................................20
Shield fixing rods or screws -- tightening..............................20
Slide rails...............................................................................8
Space heaters.....................................................................10
Spare parts..........................................................................19
Startup...................................................................................9
Storage..................................................................................6
Terminal box........................................................................15
Terminal box -- tightening the screws........................... 17 - 18
Tolerances...........................................................................13
Troubleshooting ..................................................................23
Variable speed.....................................................................12
Ventilation..............................................................................7
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN - FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
On receipt of your motor, check that it has not suffered any damage in transit.
If there are obvious signs of knocks, contact the carrier (you may able to claim on their insurance) and after a visual check,
turn the motor by hand to detect any malfunction.
2 - MARKING
As soon as you receive the motor, check that the nameplate on the machine conforms to your order.
F - 16015 ANGOULEME
Mot. 3
FLSN 112 M
N 027010 LF040
IP55 IK08 cl.F
40°C S1
V
Hz min -1 kW cos ϕ
230
400
50
-
1438
1438
4
-
0,83
0,83
kg 49
A
14,4
8,3
F - 16015 ANGOULEME
FLSN 160L
MOT. 3
N 125089 MA 001
IP55 IK08 I cl F
V
Hz
40°C
400
50
1467
min-1
S1
kg 120
kW
cos ϕ
A
15
0,82
29,6
CTP 150°C
II 3 G - Ex nA II T3
INERIS 01 ATEX 3004X
II 3 GD Ex nA II T3 Ex tD A 22 IP 55 T125°C INERIS 01 ATEX 3004X
g
DE 6212 ZZC3
NDE 6210 ZZC3
h
Definition of symbols used on nameplates:
Legal mark of conformity
of product to the requirements
of European Directives.
ATEX
Zone
Motor
type
ATEX
marking
2
(F)LSN
II 3 G
(F)LSN
II 3 GD Ex nA II Ex tD A22
ATEX 2 & 22
Protection type
marking
Ex nA II
Gas
Dust max. Degree of
temperature surface T°C
protection
class (G)
(D)
T1 to T3
/
IP55
T1 to T3
T125
IP55
ATEX specific marking
: Specific marking for protection against risks of explosion
II 3G or II 3GD
: Group and category of equipment
: Symbol for equipment designed for potentially explosive atmospheres
Ex
n
: Protection type
A
: Non-sparking apparatus
II
: Explosion group
T3
: Temperature class
Ex tD A22 IP 55 T 125°C : Protection type and maximum surface temperature
in “dust” atmospheres (optional)
VIK
: Specific recommendations for the German market
INERIS
: Notified Body
01ATEX3004 X
: EC type-examination certificate number
PTC 150°C
: Optional thermal protection
Motor
MOT 3 ~
LSN
112-160
MU-L
: Three-phase A.C. motor
: LSN range
: Frame size
: Frame size
Motor no.
No.
: Serial number
L-M*
: Year of production
F-A**
: Month of production
040-001 : Batch number
* L = 2000, M = 2001 ... W = 2009, X = 2010
**A = January, F = June
kg : Weight
IP 55 : Degree of protection
IK08 : Shock resistance index
I cl.F : Insulation class F
40°C :Maximum ambient operating
temperature
S1 : Duty
V
: Supply voltage
Hz : Supply frequency
min-1 : Revolutions per minute (rpm)
kW : Rated output power
cos j : Power factor
A
: Rated current
D
: Connection symbol
Bearings
DE
: Drive end
Drive end bearing
NDE : Non drive end
bearing
5
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN - FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
3 - STORAGE
Prior to commissioning, motors should be stored:
- Away from humidity: at relative humidity levels above 90%,
the machine insulation can drop very rapidly, to just above zero
at around 100%. The state of the anti-rust protection on
unpainted parts should be monitored.
For very long storage periods the motor can be placed in a
sealed enclosure (for example heat-shrunk plastic) containing
sachets of desiccant:
- Away from frequent significant variations in temperature, to
avoid the risk of condensation. During storage the drain plugs
must be removed to allow condensation water to escape.
- If the area is subject to vibration, try to reduce the effect of this
vibration by placing the motor on a damping support (rubber
pad or similar) and turn the rotor a fraction of a turn once a
fortnight to prevent the bearing rings from becoming marked.
Remove and replace the rotor locking device if applicable.
- Do not remove the rotor locking device (where there are roller
bearings).
Even if the motor has been stored in the correct conditions,
certain checks must be carried out before it is started up:
Greasing
The motors must be stored in their original packaging, in a
location away from humidity (RH<90%) and vibrations.
- Motors fitted with permanently greased bearings: maximum
storage period = 3 years; after this time, replace the bearings
with an identical type.
- Motors fitted with grease nipples:
Storage period
Grade
Grade
2 grease 3 grease
< 6 months
< 1 year
No regreasing before commissioning.
6 months
to 1 year
1 to 2
years
Regrease before commissioning in accordance with
the instructions appearing on the nameplate
(quantity and quality of grease).
1 to 5
years
2 to 5
years
Dismantle and clean the bearings. Completely
replace the grease in accordance with the
instructions appearing on the nameplate (quantity
and quality of grease). Replace the seals on the
shaftways and for IP 66 motors on the spigots before
commissioning.
> 5 years
> 5 years
Change the bearings. Completely replace the
grease in accordance with the instructions appearing
on the nameplate (quantity and quality of grease).
Replace the seals on the shaftways (lubricate them
using the same grease as that on the bearings)
and for IP 66 motors on the spigots before
commissioning.
Warning: Do not perform a high voltage test on
the auxiliaries.
6
4 - COMMISSIONING
Before starting the motor, it is advisable to
check the insulation between the phases and
earth, and between phases.
This check is essential if the motor has been stored for longer
than 6 months or if it has been kept in a damp atmosphere.
This measurement must be carried out using a megohmmeter
at 500 V D.C. (do not use a magnetoelectric system).
It is better to carry out an initial test at 30 or 50 volts and if the
insulation is greater than 1 megohm, carry out a second test at
500 volts for 60 seconds. The insulation value must be at least
10 megohms in cold state.
If this value cannot be achieved, or if the motor may have been
splashed with water or salt spray, or kept for a long period in a
very humid place or if it is covered with condensation, it is
advisable to dry the stator for 24 hours in a drying oven at a
temperature of between 110°C and 120°C.
If it is not possible to place the motor in a drying oven:
- Switch on the motor, with the rotor locked, at 3-phase A.C.
voltage reduced to approximately 10% of the rated voltage, for
12 hours (use an induction regulator or a reduction transformer
with adjustable outlets).
- Or supply the 3 phases in series with a D.C. current, with the
voltage at 1 to 2% of the rated voltage (use a D.C. generator
with independent excitation or batteries for motors of less than
22 kW).
- NB: The A.C. current must be monitored using a clamp
ammeter, and the D.C. current using a shunt ammeter. This
current must not exceed 60% of the rated current.
It is advisable to place a thermometer on the motor housing: if
the temperature exceeds 70°C, reduce the indicated voltage
or current by 5% of the original value for every 10°C difference.
While it is drying, all the motor orifices must be open (terminal
box, drain holes). Before commissioning, all these covers must
be replaced so that the motor conforms to IP 55 or 65 degree
of protection. Clean or replace the orifices and plugs or
breathers before reassembly.
M
Warning: If the high voltage test, carried out at
the factory before despatch, needs to be
repeated, it should be performed at half the standard
voltage, ie: 1/2 (2 U + 1000 V). Check that the capacitive
effect resulting from the high voltage test is eliminated
before connecting the terminals to earth.
Prior to commissioning for all motors:
- Remove all dust from the machine
- Rotate the motor with no load (no mechanical load)
for 2 to 5 minutes, checking that there is no abnormal
noise. If there is any abnormal noise, see section 11.
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN - FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
5 - INSTALLATION
• Vertical position
5.1 - Position of the lifting rings
Motors intended for use in the vertical position
may be delivered in the horizontal position on a
pallet. When the motor is pivoted, the shaft must under
no circumstances be allowed to touch the ground, as
the bearings may be irreparably damaged. Moreover,
additional special precautions must be taken, as the
integral motor lifting rings are not designed for pivoting
the motor.
• Horizontal position
n x ØS
D
Labour regulations stipulate that all loads over 25 kg must be
fitted with lifting devices to facilitate handling.
The positions of the lifting rings and the minimum dimensions
of the loading bars are given below in order to help with
preparation for handling the motors. If these precautions are
not followed, there is a risk of warping or crushing some
equipment such as the terminal box, cover or drip cover.
C
Position of lifting rings for lifting the motor only
(not connected to the machine).
h
e
E
View from above
Type
C
320
320
390
410
410
480
480
480
480
590
695
755
810
960
160
180 MR
180 L
200
225 ST/MT
225 M
250
280 S
280 M
315 ST
315 M/L
355
355 LK - 400
400 LK - 450
E
200
200
265
300
300
360
360
360
360
350
400
Side view
Vertical position
D
n
ØS e min.* h min.
230
2
14
320
350
230
2
14
320
270
290
2
14
390
320
295
2
14
410
450
295
2
14
410
450
405
4
30
540
350
405
4
30
540
350
485
4
30
590
550
585
4
30
590
550
590
2
17
630
550
765
2
24
695
550
835
2
24
755
550
1135
4
30
810
600
1170
4
30
960
750
* If the motor is fitted with a drip cover, allow an additional 50 to 100 mm
to avoid damaging it when the load is swung.
5.2 - Location - ventilation
Our motors are cooled in accordance with method IC 411
(standard IEC 60034-6), ie. “machine cooled by the surface,
using the ambient fluid (air) flowing along the machine”.
The fan at the non drive end cools the motor. Air is sucked in
through the grille of a fan cover (which provides protection
against the risk of direct contact with the fan in accordance with
standard IEC 60034-5) and blown along the housing fins to
ensure thermal equilibrium of the motor whatever the direction
of rotation.
A
2 x Øt
h
e
H
1/4 H min
Type
100
112
132
160
180 MR
180 L
200
225 ST/MT
225 M
250
280
315 ST
315 M/L
355
355 LK - 400
400 LK - 450
A
120
120
160
200
200
200
270
270
360
360
360
310
360
310
735
730
Horizontal position
e min.
h min.
200
150
200
150
200
150
160
110
160
110
260
150
260
165
260
150
265
200
380
200
380
500
380
500
380
500
380
500
710
500
710
500
Øt
9
9
9
14
14
14
14
14
30
30
30
17
23
23
30
30
The motor must be installed in an adequately ventilated area,
with clearance for the air intake and outlet of at least onequarter of the frame size.
Blocking the fan cover grille and the housing fins, even
accidentally (clogging), is likely to adversely affect the operation
and safety of the motor.
In the case of vertical operation with the shaft extension facing
down, it is advisable to fit the motor with a drip cover to prevent
the entry of any foreign bodies.
It is necessary to check that the hot air is not being recycled. If
it is, pipes must be provided for the intake of cold air and
discharge of hot air, in order to prevent abnormal temperature
rise of the motor.
In this case, if the air is not circulated by an auxiliary fan, the
dimensions of the pipes must be such that the load losses are
negligible compared to those of the motor.
7
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN - FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
Positioning
The motor must be mounted in the position specified on
the order, on a base which is rigid enough to prevent
distortion and vibration.
Where the motor feet have six fixing holes, it is preferable to
use those which correspond to the standard dimensions for the
motor power rating (refer to the technical catalogue for
induction motors) or, failing that, to those shown at B2.
B1
B2
Provide easy access to the terminal box, the condensation
drain plugs and, if appropriate, to the grease nipples.
Use lifting equipment which is compatible with the weight of the
motor (indicated on the nameplate).
When the motor is fitted with lifting rings, they
are for lifting the motor on its own and must not
be used to lift the whole machine after the motor has
been fitted to it.
Note 1: When installing a suspended motor, it is
essential to provide protection in case the fixing
breaks.
Note 2: Never stand on the motor.
5.3 - Coupling
Preparation
Turn the motor by hand before coupling to detect any possible
fault due to handling.
Remove any protection from the shaft extension. Drain off any
condensation water which may have formed inside the motor
(see section 4).
8
Rotor locking device
For made-to-order motors with roller bearings, remove the
rotor locking device.
In exceptional circumstances when the motor has to be moved
after the coupling device has been fitted, the rotor must be reimmobilised.
Balancing
Rotating machines are balanced according to standard
IEC 60034-14:
- Half-key when the shaft extension is marked H
By special request the balancing can be set:
- No key when the shaft extension is marked N
- Full key when the shaft extension is marked F
Any coupling element (pulley, coupling sleeve, slip-ring, etc)
must therefore be balanced accordingly.
Motor with 2 shaft extensions:
If the second shaft extension is not used, in order to
comply with the balancing class, the half-key or key must
be fixed firmly in the keyway so that it is not thrown out
during rotation (H or F balancing) and must be protected
against direct contact.
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN - FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
6 - ELECTRICAL PARAMETERS
LIMIT VALUES
6.1 - Limiting problems caused by motor
starting
In order to protect the installation, any significant temperature
rise in the cabling conduits must be prevented, while ensuring
that the protection devices are not triggered during starting.
Problems affecting the operation of other devices connected to
the same source are due to the voltage drop caused by the
current inrush on starting.
Even though mains supplies increasingly allow D.O.L. starting,
the current inrush must be reduced for certain installations.
Jolt-free operation and soft starting ensure greater ease of use
and an increased lifespan for the machines being driven.
The two essential parameters for starting cage induction
motors are:
- Starting torque
- Starting current
The starting torque and the resistive torque determine the
starting time.
Depending on the load being driven, it may be necessary to
adapt the torque and the current to the machine starting time
and to the possibilities of the mains power supply.
The five essential modes are:
- D.O.L. starting
- Star/delta starting
- Soft starting with autotransformer
- Soft starting with resistors
- Electronic starting
The "electronic" starting modes control the voltage at the motor
terminals during the entire starting phase and enable very soft,
jolt-free starting.
The starting systems must be placed outside the explosive
zone or be of an approved type.
6.3 - Starting times
The starting times must remain within the limits shown below
on condition that the number of starts per hour is 6 or less.
Three successive cold starts and two consecutive warm starts
are allowed. Under these conditions, the maximum surface
temperatures (see section 8) are guaranteed.
ID
_
20
IN
15
10
9
8
7
6
5
4
3
3
4
5
7
10
15
t
S
Permissible motor starting time as a function of the ratio ID/IN for
cold starts.
6.4 - Supply by frequency inverter
(See section 8.1).
6.2 - Supply voltage
The rated voltage is indicated on the nameplate.
9
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN - FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
7 - USE
Thermal protection (see section 9) and space heaters.
Type
Operating principle
Non-linear variable resistor,
indirectly heated
Operating curve
Breaking capacity
(A)
Protection provided
0
General surveillance for
transient overloads
R
Thermistor with positive
temperature coefficient PTC
T
T (T<150°C)
Copper Constantan
V
0
Peltier effect
K (T<1000°C)
Copper-nickel
T
Continuous surveillance at hot
spots at regular intervals
Variable linear resistance with
indirect heating
Mounting in switchboards with
associated reader
(or recorder)
1 per hot spot
R
Platinum resistance
thermometer
PT 100
Mounted with associated relay in
control circuit
3 in series
TNF
Thermocouples
Mounting
Number of devices*
0
High accuracy continuous
surveillance at key hot spots
T
Mounting in switchboards with
associated reader
(or recorder)
1 per hot spot
- NRT: nominal running temperature.
- The NRTs are chosen according to the position of the sensor in the motor and the temperature rise class.
* The number of devices relates to the winding protection.
Alarm and early warning
All protective equipment can be backed up by another type of
protection (with different NRTs): the first device will then act as
an early warning (light or sound signals given without shutting
down the power circuits), and the second device will be the
alarm (shutting down the power circuits).
R
VR
Protection against condensation: space heaters
Identification: 1 red label
A glass fibre flexible resistor is fixed on 1 or 2 coil end turns.
This resistor heats the machines when stopped and thus
prevents condensation inside the machines. The space
heaters must be switched off when the machine is in use.
Power supply: 230 V single-phase unless otherwise specified
by the customer.
T plugs at the bottom of the motor must be opened
The drain
TT
TNF
approximately
every 6 months. They must be replaced with
new seals to ensure IP 55 or IP 65 protection of the motor.
Thermal magnetic protection
The motors must be protected by a thermal magnetic device
located between the isolating switch and the motor. These
protection devices provide total protection of the motor against
non-transient overloads.
This device can be accompanied by fused circuit-breakers.
Built-in indirect thermal protection
The motors can be equipped with optional heat sensors. These
sensors can be used to monitor temperature changes at “hot
spots”:
- Overload detection
10
- Cooling check
- Monitoring strategic points for maintenance of the installation
- Ensuring the temperature of the hot spots is monitored
To ensure that the maximum surface temperature
is never reached, the thermal sensors fitted on the
motor must be connected to a device (in addition to and
functionally independent of any system which could be
required for operational reasons in normal conditions)
which switches off the motor.
Under no circumstances can these sensors be
used for direct control of the motor operating cycles.
Control and breaking devices must be installed in
cabinets placed outside the danger zone or must be of
an approved type.
Temperature sensor operating thresholds:
- Maximum surface temperature: 125°C (GD)
• winding sensor: 120°C ± 5°C
• DE shield sensor: 120°C ± 5°C
- Maximum surface temperature: 195°C (class T3)
• winding sensor: 150°C ± 6°C
• DE shield sensor: 120°C ± 5°C
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN - FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
8 - SPECIAL OPERATING
CONDITIONS
- Thermal protection (see sections 7 & 9)
Each time the motor is dismantled, and during planned
maintenance, replace the seals on the shaftways, the shield
spigots and the terminal box cover with new seals of the same
type after cleaning all parts. The seals on the shaftways must
be fitted using the same type of grease as on the bearings.
- Space heaters (see section 7)
- Temperatures: storage and ambient
Note: Ta = ambient temperature
If it has been stored at a temperature lower than
- 10°C, heat the motor (see section 4) and turn the shaft
manually before starting up the machine.
If it is to be used at a temperature lower than
- 20°C, the motor may be equipped with space heaters.
Our standard motors are designed to operate at an ambient
temperature Ta of between
-20°C and 40°C.
If -40°C ≤ Ta < -25°C, the shaftway seals must be made of
silicon and the fan must be metal. The flat seals of the terminal
box must be silicon or polyurethane mastic.
- Surface temperature
As standard, the maximum surface temperature of our motors
is 200°C for T3 with an ambient temperature of ≤ 40°C (G).
If the motors are also to be used in atmospheres which may
contain explosive dust, the maximum surface temperature will
be 125°C (GD).
- Installation zones
Motors with IP 65 protection are designed for use in
atmospheres containing explosive dust - group II - Category 2
(zone 21) or Category 3 (zone 22).
- Workforce safety
Protect all rotating devices before power-up.
If a motor is started up without a coupling device having been
fitted, carefully immobilise the key in its location.
All measures must be taken to ensure protection against the
risks which arise when there are rotating parts (coupling
sleeve, pulley, belt, etc).
Beware of backdriving when the motor is switched off. The
appropriate precautions must be taken:
- For example, for pumps a non-return valve must be installed.
- LEROY-SOMER "Digistart" electronic starter
This is a multi-function electronic system, which can be used
with all 3-phase cage induction motors.
It provides soft starting of the motor with:
- Reduction of the starting current
- Gradual, jolt-free acceleration, achieved by controlling the
current consumed by the motor.
After starting, the DIGISTART performs additional motor
control functions in its other operating phases: steady state
and deceleration.
- 9 to 750 kW models
- Supply: 220 to 700 V - 50/60 Hz
DIGISTART is economical to install, as a fused switch is the
only additional device needed.
In atmospheres containing explosive gas, the degree of
protection is IP 55.
The "Digistart" electronic starter used with the motor
must be installed outside danger zones.
- Connection
Particular attention must be paid to the information on the
nameplate in order to choose the correct type of connection for
the supply voltage.
- Contactors - Isolators
In all cases, contactors, isolators, etc, must be installed
and connected in an enclosure outside the dangerous
zones or be of an approved type.
- Earthing
It is compulsory to earth the motor, and earthing must be
performed in accordance with current regulations (protection
of workers).
- Shock resistance
The motor can withstand a weak mechanical shock (IK 08
according to EN 50102). The user must provide additional
protection if there is a high risk of mechanical shock.
- Seals
If the drain plugs or breathers are removed, they must be
replaced in order to ensure that the motor conforms to IP 55 or
IP 65 protection. Replace the seals which have been removed
with new seals of the same type. Clean the holes and plugs
before reassembly.
11
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN - FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
8.1 - Use with a variable speed drive
When a drive is used, any special instructions detailed in the
specific drive manual must be observed. In particular, the
following minimum steps must be taken:
- Check that the drive switching frequency is at least 3 kHz.
- Check that the motor has a second nameplate indicating the
motor characteristics and the motor performance when used
with a variable speed drive.
- The reference voltage, usually 400 V at 50 Hz, is indicated on
the motor nameplate. The drive must deliver a constant
voltage/frequency signal to the motor.
- Program in the drive the maximum current value and also the
min. and max. frequency values indicated on the second motor
nameplate.
- Each type of motor should have been tested first on load with
a drive of the same type as the one it will be controlled with.
Drives and sensor connection devices must be
placed outside danger zones (outside zones 0,
1, 2, 20, 21 and 22).
8.1.1 - Special conditions for safe operation
- As standard, the motor shock resistance corresponds to a
“low” risk of mechanical danger, and they should therefore be
installed in an environment with a low risk of shocks.
- The motor must be fitted with thermal sensors in the winding
(all frame sizes) and on the DE bearing (frame size 160 and
above) in the following cases:
- Motor supplied by a frequency inverter
- Motor in a good air-flow (IC418) and not self-cooled
- Motor adapted so as to no longer be self-cooled (IC410)
- Motor fitted with a backstop
- The thermal sensors fitted on the motor must be connected to
a device placed outside the zone, which switches off the motor
when the operating thresholds are reached, so that the
maximum surface temperature is never reached. This device
must operate in normal conditions and must be in addition to
and functionally independent of any system which could be
required for operational reasons in normal conditions.
- When the motor is fitted with auxiliary or forced ventilation
(IC416), a device must be present to prevent the main motor
from operating when there is no ventilation.
12
- The space heaters should only be supplied with power when
the motor is switched off and cold; their use is recommended
in ambient temperatures less than -20°C.
- The supply voltage and frequency must conform to those
indicated on the motor nameplate.
- The frequency range specified on the motor nameplate must
be strictly observed.
- When several motors are supplied by the same drive,
individual protection must be provided on each motor starter
(thermal relay for example), for safety reasons.
- When a frequency inverter is used, any special instructions
detailed in its specific manual must be complied with.
- The cable glands should be compatible with the protection
method used for the connection part. On variants with an
integral cable(s), the motor must be connected outside the
potentially explosive atmosphere, or inside a box protected by
a suitable recognised protection method.
- When the motor is fitted with one or more auxiliary junction
boxes (protected with increased safety for "de", "e" or "n"
motors), it can only tolerate a low risk of mechanical danger,
and the user will need to provide additional protection if there
is a high level of risk. (In other words, when an auxiliary terminal
box is attached to the main terminal box).
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN - FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
Tolerances and adjustments
The standard tolerances are applicable to the mechanical
characteristics given in our catalogues. They comply fully with
the requirements of IEC standard 60072-1.
- Users must adhere strictly to the instructions provided by the
transmission device supplier.
- Avoid impacts which could damage the bearings.
Use a spanner and the tapped hole of the shaft extension with
a special lubricant (e.g. molykote grease) to make it easier to
fit the coupling.
The hub of the transmission device must be:
- Fully in contact with the shoulder of the shaft or, if this is
missing, against the metal stop ring which forms a labyrinth
seal and thus locks the bearing in place (do not crush the seal).
- Longer than the shaft extension (2 to 3 mm) so that it can be
tightened using a screw and washer. If it is not, a spacer ring
must be inserted without cutting the key (if this ring is large, it
must be balanced).
Resting
on shoulder of the shaft
Resting
on stop ring
If there is a second shaft extension, it must only be used for
direct coupling and the same recommendations must be
followed.
The 2nd shaft extension may also be smaller
than the main shaft extension, and under no
circumstances can it deliver torques greater than half
the rated torque.
Inertia flywheels must not be mounted directly onto the shaft
extension, but installed between end shields and connected by
a coupling device.
Direct connection onto the machine
When mounted directly on the motor shaft extension of the
moving device (pump or fan turbine), check that this device is
perfectly balanced and that the radial force and the axial thrust
are within the limits indicated in the catalogue for bearing
performance.
Direct connection using a flexible coupling
Selection of the coupling sleeve should take account of the
rated torque to be transmitted and the safety factor dependent
on the starting conditions for the electric motor.
The machines must be carefully aligned, so that any lack of
concentricity and parallelism in the two parts of the coupling
sleeve is compatible with the recommendations of the coupling
sleeve manufacturer.
Both coupling halves should be provisionally assembled to
assist moving them in relation to one another.
Adjust the parallel plane of both shafts using a gauge. Measure
the distance between the two coupling surfaces at one point on
the circumference. Rotate them 90°, 180° and 270° in relation
to this initial position, and measure each time. The difference
between the two extreme values of dimension “x” must not
exceed 0.05 mm for standard couplings.
x
To perfect this adjustment and at the same time check the
concentricity of the two shafts, fit 2 gauges as shown in the
diagram and slowly turn both shafts.
The differences registered by either shaft will indicate the need
for an axial or radial adjustment if the difference exceeds
0.05 mm.
Direct connection using a rigid coupling
The two shafts must be aligned so as to adhere to the tolerances
of the coupling sleeve manufacturer.
Maintain the minimum distance between the two shaft
extensions to allow for expansion of the motor shaft and the
load shaft.
Ø (mm)
A
Ø
9 - MECHANICAL ADJUSTMENTS
A (mm)
min
9 to 55
1
≥ 60
1.5
13
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INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN - FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
Transmission via belt pulleys
With a belt/pulley assembly, check that the
motor can cope with radial loads.
The user can choose the diameter of the pulleys.
Cast iron pulleys with a diameter over 315 are not
recommended for rotation speeds of 3000 min-1.
Flat belts cannot be used for rotation speeds of 3000 min-1 or
more.
Positioning the belts
The belts must be antistatic and flame-resistant.
So that the belts can be correctly positioned, allow for possible
adjustment of approximately 3% with respect to the calculated
distance E.
Force must never be used when fitting the belts.
For notched belts, position the notches in the pulley grooves.
Fixed distance between centres:
Place a belt tensioning pulley on the slack side of the belts:
- Smooth pulley on the outside of the belt
- Grooved pulley on the inside of the belts when using V-belts
Adjustable distance between centres:
The motor is usually mounted on slide rails, which enables
optimum adjustment of the pulley alignment and the belt
tension.
Place the slide rails on a completely horizontal baseplate.
The lengthways position of the slide rails is determined by the
length of the belt, and the crossways position by the pulley of
the machine being driven.
Mount the slide rails firmly with the tension screws in the
direction shown in the diagram (slide rail screw on the belt side
between the motor and the machine being driven).
Fix the slide rails onto the baseplate and adjust the belt tension
as before.
E
Tension screw
Tension screw
Aligning the pulleys
Check that the motor shaft is totally parallel to that of the
receiving pulley.
Adjusting the tension of the belts
The tension of the belts must be adjusted very
carefully in accordance with the recommendations of the
belt supplier and the calculations made when the product
was specified.
Reminder:
- Too much tension = unnecessary force on the end shields
which could lead to an abnormal temperature, premature wear
of the bearing unit (end shield-bearings), and eventually break
the shaft.
- Too little tension = vibration (wearing of the bearing unit).
14
Thermal protection
On-line protection
Setting the thermal protection (see section 7)
This should be adjusted to the value of the current read on the
motor nameplate for the connected mains voltage and
frequency.
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN - FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
10 - SUPPLY CONNECTION
Cable gland
10.1 - Terminal box
This is placed as standard on the top of the motor near the drive
end. It has IP 55 (G) or IP 65 (GD) protection and is fitted with
a cable gland according to the table below.
Warning: The position of the terminal box cannot be easily
modified, even with flanged motors, as the condensation drain
holes (if appropriate) must be at the bottom.
Terminal box positions
Cable gland positions
If the thread(s) on the orifice(s) designed to take one or more
cable glands or conduits is (are) metric, there will be no
particular marking on the motor; if the thread type is different or
mixed, the type(s) will be marked on the equipment.
The standard position of the cable gland (1) is on the right,
seen from the motor drive end.
Due to the symmetrical construction of the terminal box, it can
be placed in any of the four directions, except position 2 on
flange-mounted motors (B5), apart from on 355 LK - 400 - 500.
A cable gland must never open upwards.
Check that the incoming bend radius of the cables prevents
water entering via the cable gland.
The installer is responsible for the IP 5x or IP 6x
sealing of the cable path.
A Standard
position
3
2
4
1
Standard
position
Cable gland type *
Min. cable Ø
(mm)
Max. cable Ø
(mm)
ISO M16 x 1.5
6
11
ISO M20 x 1.5
7.5
13
ISO M25 x 1.5
12.5
18
ISO M32 x 1.5
17.5
25
ISO M40 x 1.5
24.5
33.5
ISO M50 x 1.5
33
43
CMA 3” GC
40
62
* Cable anchor gland certified Ex e. Cable gland made of brass.
Ø max.
Adapt the cable gland and its reducer or
amplifier, if fitted, to the diameter of the cable
being used, in accordance with the manual specific to
the cable gland, which is included with the motor.
To maintain the original stated IP protection of the
motor, it is essential to make a watertight seal between
the rubber ring and the cable, by tightening the cable
gland correctly (it should not be possible to unscrew
it without a tool).
Unused cable glands must be replaced with threaded
plugs.
Unused orifices must also be closed off using
threaded plugs. When fitting cable glands or blocking
holes, a seal of perbunan, or silicon or polyurethane
mastic, must be inserted between the cable glands,
the plugs, the reducers or (and) the amplifiers and the
support or the terminal box.
For connections using screwed conduit entries, a
minimum of 5 cylindrical threads or 3 tapered threads
must be engaged (check the minimum thickness of
the cable gland). These threads must be rendered
watertight by using polyurethane or silicon mastic, or
anti-vibration adhesive.
Cable size of the cable glands
Ø min.
Cable size
15
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN - FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
The motors are factory-fitted with guidance labels
which must be kept clean and legible.
Under no circumstances should the power supply cable be used for handling the motor.
10.2 - Wiring diagram for terminal block
or isolators
All motors are supplied with a wiring diagram in the terminal
box. If required, this diagram should be obtained from the
supplier, specifying the motor type and number (shown on the
motor nameplate).
The connector links required for coupling can be found inside
the terminal box.
Single speed motors have a block with 6 EExe approved safety
terminals, whose marking complies with IEC 60034-8
(or NFC 51-118).
10.3 - Direction of rotation
When the motor is powered by U1, V1, W1 or 1U, 1V, 1W from
a direct mains supply L1, L2, L3, it turns clockwise when seen
from the drive shaft end.
If 2 phases of the power supply are changed over, the motor
will rotate anti-clockwise (the motor should be checked to
ensure that it has been designed to rotate in both directions).
If the motor is fitted with accessories (thermal protection or
space heater), these must be connected on mini-terminals.
Motor fitted with a terminal block
Sensor
16
10.4 - Earth terminal
It is compulsory to earth the motor, and earthing
must be performed in accordance with current
regulations (protection of workers).
One earth terminal is located inside the terminal box, and
another is outside the enclosure. They are marked:
They must be protected against self-release by a jumper, lock
washer, screw or locknut, or anti-vibration adhesive.
The sizing of the cables must comply with the specifications of
standard 60079-0.
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN - FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
10.5 - Connecting the power supply
cables to the terminal block
Max. connection cross-section on KS terminal blocks
Terminal
The cables must be fitted with connectors suitable for the cable
cross-section and the terminal diameter (diagrams 1 and 3).
They must be crimped in accordance with the connector
supplier's instructions.
10.5.1 - Terminal block with round connectors
These terminal blocks, mounted on the housing and held in
place by 2 locked screws, make it possible to use standard
round connectors.
KS7A
KS8A
KS10A
KS14A
Solid or stranded cable
mm2
2.5
4
6
10
KS18A
-
Solid cable
mm2
4
6
10
16
-
Max. current (solid cable)
A
35
46
63
85
-
10.5.3 - Other connection systems
Where anti-rotation is not ensured by the joining element,
insulate the shank of each power supply cable connector using
a heat-shrinkable sheath; this insulation must extend at least
15 mm down the cable. As they exit each terminal, place the
cables (fitted with their connectors) parallel to one another, so
as to maintain the maximum air distances and leakage lines.
- Isolator and support plate
Nut
2 connectors
max. per
terminal
Heat-shrinkable sheath
{
Diagram 1
Each terminal consists of the following items, positioned in
order:
- 1: motor cable connector, shank locked
- 2: power supply cable connector, shank locked
- 3: terminal washer
- 4: Y or D connector link
- 5: “Serpress” brake nut
Tightening torque (N.m) for the nuts on LSE terminal
blocks
Terminal
M4
M5
M6
Steel
2
3.2
5
Brass
1
2
3
Cable
Lock washer
Bar
Isolator
Connector
Support
plate
Lock washer
Heat-shrinkable
sheath
Screw
Diagram 3
Tightening torque (N.m) for the nuts on the isolators
Terminal
M8
M10
M12
Steel
10
20
35
- LS terminal block
10.5.2 - KS terminal block with slotted terminals
The motor winding connecting cable is attached to the
connector for a slotted terminal, either tinned brass KA type
(open shank) for soldering, or tinned copper QUCA type
(closed shank) for crimping with a suitable tool.
The cable connecting the electrical mains supply is laid in the
terminal slot, under the connector, and tightened to the
recommended tightening torque, as are the connector and the
connector link, using the nut.
Diagram 2
- 1: slotted terminal
- 2: clamping nut
- 3: lock washer
Tightening torque (N.m) for the nuts on LS terminal blocks
Terminal
M4
M5
M6
M8
M10
M12
M14
M16
Steel
2
3.2
5
10
20
35
50
65
Brass
1
2
3
7
15
-
-
-
The fixing screws used for connecting the cables are supplied
with the terminal block. Any modification of this equipment will
lead to the loss of approval of the connection system.
When closing the box, ensure that the seal is correctly
positioned.
As a general rule, check that no nut, washer or
other foreign body has fallen into the terminal
box and/or come into contact with the winding.
- 4: connector link
- 5: winding connector
- 6: slot for power supply cable
Tightening torque (N.m) for the nuts on KS terminal
blocks
Terminal
KS7A
KS8A
KS10A
KS14A
KS18A
Steel
5
6
6
10
16
17
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN - FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
- Earth terminal:
This is situated inside the terminal box; in some cases, the
earth terminal may be situated on one of the feet or on one of
the cooling fins (round motors). It is indicated by the symbol:
It is compulsory to earth the motor. Earthing
must be performed in accordance with current
regulations (protection of workers).
* If required, ask the supplier for this diagram, specifying the
motor type and number (shown on the motor nameplate).
- Connecting the power supply cables to the terminal
block:
The cables must be fitted with connectors suitable for the cable
cross-section and the terminal diameter.
They must be crimped in accordance with the connector
supplier's instructions.
Connection must be carried out with connector resting on
connector (see the diagrams below):
11 - MAINTENANCE
11.1 - General information
11.1.1 - Frequent monitoring
This monitoring, generally carried out by operators, is intended
to:
- Monitor, as a preventive measure, the state of the equipment
(cables, cable glands, etc) bearing in mind the environmental
conditions (temperature, humidity, etc).
- Detect as early as possible any potentially dangerous
problems, such as damage to the cable ducts by abrasion.
- Ensure that staff are fully trained on the risks and means of
prevention.
If there is an accumulation of dust between the
fins and/or on the fan cover grille, leading to a
rise in the surface temperature, the motor should be
cleaned frequently.
11.1.2 - Repairs
Repairs to and/or rewinding of an electric motor for use in
potentially explosive zones must be carried out by qualified
staff, using identical equipment, in compliance with the
specifications of standard 60079-19. It is essential that the
motor is returned to its original state, adhering scrupulously to
the original motor construction. Disregarding this may affect
the safety of the equipment (for example, protection index not
conforming to IP 55 or IP 65) or the surface temperature (for
example, rewinding the motor). Prior written authorisation from
the manufacturer is necessary.
WARNING:
Unless written authorisation has been
obtained, the manufacturer cannot be
held responsible for any action which
could affect the motor's safe operation.
Service Centres (CDS) are trained and
approved by “Saqr - ATEX” to
guarantee the maintenance and repair
of these motors in complete safety.
18
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN - FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
11.1.3 - Spare parts
When ordering spare parts, you must indicate the
complete motor type, its serial number and the information
given on the nameplate (see section 2).
Part numbers can be found on the exploded views and
their descriptions in the parts list (section 12).
Routine maintenance kits can be obtained from our After Sales
Service.
In the case of flange mounted motors, indicate the type of
flange and its dimensions (see below).
Flange mounted motor
LA
T
N J6
M
P
nØS
11.2.2 - Checks before reassembly
Stator:
- Remove all dust from the stator: if the winding needs to be
cleaned, a suitable liquid must be used: dielectric and inert on
the insulating components and the external finish.
- Check the insulation (see section 4) and if necessary, dry it in
an oven.
- Clean the spigots thoroughly, and remove all traces of knocks
and mastic sealant on the mating surfaces if necessary.
Rotor:
Replace the seals on the shaftways and on the
shield spigots with new seals of the same type,
after cleaning the parts. The seals on the shaftways
must be fitted using the same type of grease as on the
bearings.
Face mounted motor
T
P
M
N J6
nØS
To ensure that our motors operate correctly and safely, we
recommend the use of original manufacturer spare parts.
In the event of failure to comply with this advice, the
manufacturer cannot be held responsible for any damage.
11.2 - Corrective maintenance: general
information
11.2.1 - Dismantling the motor
First switch off and lock the power supply
and ensure there is no potentially explosive
atmosphere.
- Open the terminal box, mark the wires and their positions
- Disconnect the power supply wires
- Uncouple the motor from the equipment being driven
Always use an extractor to remove any devices mounted on
the motor shaft extension.
- Clean and check the bearing running surfaces. If they are
damaged, renew the running surfaces or change the rotor.
- Check the condition of the threads, and keys and
their housings.
End shields:
- Clean off any traces of dirt (old grease, accumulated dust,
mastic sealant, etc).
- Clean the bearing housings and the spigot.
- If necessary, apply some antiflash varnish to the insides of the
end shields.
- Carefully clean the bearing retainers and the grease valves (if
these are fitted on the motor).
11.2.3 - Mounting the bearings on the shaft
This operation is extremely important, as the slightest
indentation of a ball on the bearing tracks would cause noise
and vibration.
Lightly lubricate the running surfaces of the shaft.
There are a number of ways of mounting the bearings correctly:
- Cold state: The bearings must be mounted without any
impact, using a spanner (do not use a hammer). The force
applied must not be transferred to the bearing track. You should
therefore use the internal cage for support (taking care not to
press on the seal shield for sealed bearings).
- Hot state: Heat the bearing to between 80 and 100°C: using
a bearing heater, in a drying cabinet, an oven or on a heating
plate.
(A blowtorch or an oil bath must never be used).
19
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN - FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
After dismantling and reassembling a bearing, all the spaces
between the seals and labyrinth seals must be filled with
grease in order to prevent the entry of dust and the rusting of
machined parts.
11.2.4 - Reassembling the motor
1
4
3
2
Tie rod tightening torque
Type
56
63
71
80
90
100
112
132
160
180 MT/LR
180 L
200
225 ST/MR
225 MK
250
280
315
315 LK/355
355 LK/400
450
Rod/screw Ø
M4
M4
M4
M5
M5
M5 or M6
M5 or M6
M7
M8
M8
M10
M10
M10
M12
M12
M12
M12
M16
M16
M16
Before any work is carried out in the terminal box
or in the cabinet, check that the space heaters
are switched off.
Tightening torque
N.m ± 5%
2.5
2.5
2.5
4
4
4
4
10
18
18
25
25
25
44
44
44
44
100
100
100
Care must be taken to ensure that the stator is replaced in
its original position so that the stack of laminations is centred
correctly (generally with the terminal box facing forward) and
the water drain holes are positioned correctly if they are on the
housing.
Tightening the tie rods
These must be tightened diagonally, to the torque indicated
(see above).
11.2.5 - Reassembling the terminal box
Reconnect all the power supply wires in accordance with the
diagram or the markings made before dismantling, and check
that the seals are correctly positioned before closing. Check
that the terminal box components are tightened correctly.
Note: It is advisable to test the motor at no load.
- If necessary, repaint the motor.
- Mount the transmission device on the motor shaft extension
and reinstall the motor on the machine to be driven (see
section 5.3).
11.3 - Safety regulations
Before any work is carried out on the motor or in
the cabinet, ensure that there is no potentially
explosive atmosphere and that all the components of
the equipment are powered down.
20
Before any work is carried out on the motor or
in the cabinet, check that the cosine j
compensation capacitors are isolated and/or
discharged (read the voltage at the terminals).
Depending on the type of thermal protection, the
motor may remain powered up. Ensure that the
mains supply is disconnected before any work is
carried out in the terminal box or in the cabinet.
11.4 - Routine maintenance
Inspection after commissioning
After approximately 50 hours’ operation, check the tightness of
the screws fixing the motor and the coupling device. In the case
of chain or belt transmission, check that the tension is correctly
adjusted.
Cleaning
To ensure the motor operates correctly, remove any dust or
foreign bodies which may clog the air intake and the housing
fins.
Precaution: Check that the motor is completely sealed
(terminal box, drain holes, etc) before carrying out any
cleaning operation.
Dry cleaning (vacuuming or compressed air) is always
preferable to wet cleaning.
Cleaning must always be carried out at a
pressure of less than 10 bars, from the centre of
the motor outwards to avoid dust and particles getting
under the seals.
Draining condensation water
Variations in temperature cause condensation to form inside
the motor. This must be removed before it affects the operation
of the motor.
Condensation drain holes, located at the bottom of the motors
(bearing in mind their operating position) are sealed with plugs
or breathers which must be removed and then replaced every
six months.
Note: If there is high humidity and significant variations in
temperature, or a prolonged stoppage, a shorter period is
recommended.
Replace the drain hole covers to ensure IP55 or
IP65 protection of the motor. Replace the seals
which have been removed with new seals of the same
type. Clean the orifices and plugs or breathers before
reassembling them.
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN - FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
11.4.1 - Greasing
Grease life L10h in 000s of hours, for frames sizes < 132
11.4.1.1 - Grease life
The lifetime of a lubricating grease depends on:
- the characteristics of the grease (type of soap and base
oil, etc)
- service stress (type and size of bearing, speed of rotation,
operating temperature, etc)
- contamination
11.4.1.2 - Permanently greased bearings
For motors from 80 to 132 frame size, the type and size of the
bearings make for long grease life and therefore lubrication for
the lifetime of the machine. The grease life L10h as a function of
speed of rotation and ambient temperature is shown on the
chart opposite.
11.4.1.3 - Bearings with grease nipples
The chart below shows the regreasing intervals, depending on
the type of motor, for standard bearing assemblies of frame
size ≥ 160 fitted with grease nipples, operating at an ambient
temperature of 40°C on a horizontal shaft machine.
Note: You should comply with the quality and quantity of
grease and the regreasing intervals shown on the machine
nameplate.
11.4.1.4 - Special assembly
For special assemblies (motors fitted with DE roller bearings or
other assemblies), machines of frame size ≥ 160 have bearings
with grease nipples. Instructions for bearing maintenance are
given on the nameplates on these machines.
Type
Ex nA II T3
FLSN
Type
Ex nA II T3
LSN
Frame size
Polarity
80
90
100
112
132
2;4;6;8
2;4;6;8
2;4;6;8
2;4;6;8
2;4;6;8
160
180 M
180 L
200 L
225 S
225 MT
225 M
250 M
280 S/M
315 S
315 S
315 M / L
315 M / L
355 L
355 L
355 LK
2;4;6;8
2;4
4;6;8
2;4;6;8
4;6;8
2
4;6;8
2;4;6;8
2;4;6;8
2
4;6;8
2
4;6;8
2
4;6;8
4;6;8
Frame size
Polarity
80 L
90 S - SL - L
100 L
112 M - MR - MG
112 MU
132 S
132 M - SM - MU
160 MP
160 M
160 LR
160 L
180 MT - LR
180 L - LU
200 LT
200 L
2;4;6;8
2;4;6;8
2;4;6;8
2;4;6;8
2;4;6;8
2;4;6;8
2;4;6;8
2;4
6;8
4
2;4;6;8
2;4
4;6;8
2;4;6
2;6;8
225 ST - MT
225 SR - MR
250 MZ
250 ME
280 SC - MC
280 SC
280 MD
2;4;6;8
2;4;6;8
2
4;6;8
2
4;6;8
4;8
T amb (C)
60
50
40
30
N = 750 min -1
N = 1000 min -1
N = 1500 min -1
N = 3000 min -1
20
10
0
5
10
15
20
25
Grease life in 000s of hours
30
The table below is valid for FLS motors placed in the
horizontal position and lubricated with ESSO UNIREX N3
grease, which is used as standard, and also KLUBER
BQ 72-72 grease for FLSN 315 ST/M/L and 355 L (2-pole
versions only).
Permanently greased
bearings
N.D.E.
D.E.
6203 ZZ C3 6204 ZZ C3
6204 ZZ C3 6205 ZZ C3
6205 ZZ C3 6206 ZZ C3
6205 ZZ C3 6206 ZZ C3
6207 ZZ C3 6308 ZZ C3
Type of bearing for bearings
with grease nipples
N.D.E.
D.E.
6210 Z C3
6309 Z C3
6210 Z C3
6310 Z C3
6212 Z C3
6310 Z C3
6313 C3
6313 C3
6313 C3
6313 C3
6313 C3
6313 C3
6314 C3
6314 C3
6314 C3
6314 C3
6314 C3
6316 C3
6317 C4
6317 C4
6318 C4
6318 C3
6317 C4
6317 C4
6320 C3
6320 C3
6317 C4
6317 C4
6322 C3
6322 C3
6324 C3
6324 C4
Quantity of
grease
g
13
15
15
25
25
25
25
25
32
36
39
36
49
36
58
70
3000 rpm
25°C
40°C
11600 5800
9400
4700
6600
3300
6600
3300
6000
3000
4000
2000
3400
1700
3400
1700
3400
1700
-
Regreasing intervals (in hours)
1500 rpm
1000 rpm
25°C
40°C
25°C
40°C
17000 8500 21000 10500
15500 7750
15500 7750 19500 9750
12500 6250 16500 8250
12500 6250 16500 8250
12000 6000 16000 8000
12000 6000 16000 8000
14400 7200 16000 8000
12400 6200 16000 8000
10800 5400 16000 8000
9000
4500 16000 8000
7400
3700 16000 8000
750 rpm
25°C
40°C
21000 10500
19500 9750
16500 8250
16500 8250
16000 8000
16000 8000
16000 8000
16000 8000
16000 8000
16000 8000
16000 8000
Permanently greased
bearings
N.D.E.
D.E.
6203 ZZ CN 6204 ZZ C3
6204 ZZ C3 6205 ZZ C3
6205 ZZ C3 6206 ZZ C3
6205 ZZ C3 6206 ZZ C3
6206 ZZ C3 6206 ZZ C3
6206 ZZ C3 6208 ZZ C3
6207 ZZ C3 6308 ZZ C3
6208 ZZ C3 6309 ZZ C3
6210 ZZ C3 6309 ZZ C3
6308 ZZ C3 6309 ZZ C3
6210 ZZ C3 6309 ZZ C3
6210 ZZ C3
6310 Z C3
6212 Z C3
6310 Z C3
6212 Z C3
6312 C3
6214 Z C3
6312 C3
Type of bearing for bearings
with grease nipples
N.D.E.
D.E.
6214 Z C3
6313 C3
6312 C3
6313 C3
6312 C3
6313 C3
6216 C3
6314 C3
6216 C3
6314 C3
6216 C3
6316 C3
6218 C3
6313 C3
Quantity of
grease
g
25
25
25
25
25
35
25
3000 rpm
25°C
40°C
6600
3300
6600
3300
6600
3300
6000
3000
-
Regreasing intervals (in hours)
1500 rpm
1000 rpm
25°C
40°C
25°C
40°C
12500 6250 16500 8250
12500 6250 16500 8250
12000 6000 16000 8000
10500 5250 14500 7250
10500 5250 14500 7250
750 rpm
25°C
40°C
16500 8250
16500 8250
16000 8000
14500 7250
14500 7250
21
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN - FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
11.5 - Reconditioning the bearings
Bearings without grease nipples
Dismantle the motor (see section 6.1); remove the old grease
and clean the bearings and accessories with degreasing
agent.
Fill with new grease: the correct amount of new grease for the
bearing is 50% of the free space.
Bearings with grease nipples
Always begin by cleaning the waste grease channel
When using the type of grease indicated on the nameplate,
remove the covers and clean the grease nipple heads.
If a different grease from that on the nameplate is being used,
the motor must be dismantled and the bearings and
accessories cleaned with degreasing agent (carefully clean
the grease inlet and outlet passages) to remove the old
grease before relubrication.
To ensure correct lubrication, fill the inner free spaces of the
bearing retainers, flanges and grease pipes and 30% of the
bearing free space.
Then rotate the motor shaft to distribute the grease.
Warning:
Too much grease causes the bearing to overheat (statistics
show that more bearings are damaged through too much
grease than too little grease).
Important note:
The new grease must be recently manufactured, of an
equivalent performance level and must not contain any
impurities (dust, water, etc).
22
11.6 - IP 55 or IP 65 protection for the
motor
Each time the motor is dismantled and during
planned site maintenance, replace the seals on
the shaftways, the shield spigots and the terminal box
cover (if mastic) with new seals of the same type after
cleaning all parts. The seals on the shaftways must be
fitted using the same type of grease as on the bearings.
If the drain plugs or breathers are removed, they
must be replaced in order to ensure that the
motor conforms to IP 55 or IP 65 protection. Replace
the seals which have been removed with new seals of
the same type. Clean the holes and plugs before
reassembly.
If the terminal box cover is removed, clean all the
parts and replace the seal with a new seal of the
same type, if its condition no longer provides the
required degree of protection.
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN - FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
11.7 - Troubleshooting guide (in addition to standard IEC 79-17)
Incident
Possible cause
Remedy
Uncouple the motor from the equipment being driven and test the motor on
its own
Abnormal noise
Originating in motor or machine being driven?
Noisy motor
Mechanical cause: if the noise persists after switching
off the power supply
- Vibration
- Check that the key conforms to the type of balancing (see section 11.3)
- Damaged bearings
- Change the bearings
- Mechanical friction: ventilation, coupling
- Check
Electrical cause: if the noise stops after switching off the - Check the power supply at the motor terminals
power supply
Motor heats up
abnormally
Motor does not start
- Normal voltage and 3 phases balanced
- Check the connection of the terminal block and the tightening of the
connectors
- Abnormal voltage
- Check the power supply line
- Phase imbalance (current)
- Check the winding resistance and the balancing of the mains supply
(voltage)
- Faulty ventilation
- Check the environment
- Clean the fan cover and the cooling fins
- Check that the fan is correctly mounted on the shaft
- Faulty supply voltage
- Check
- Terminal connection fault
- Check
- Overload
- Check the current consumption in relation to that indicated on the motor
nameplate
- Partial short-circuit
- Check the electrical continuity of the windings
and/or the installation
- Phase imbalance
- Check the winding resistance
No load
- Mechanical seizing
- Broken power supply line
When switched off:
- Check by hand that the shaft rotates freely
- Check the fuses, electrical protection, starting device, electrical
continuity
On load
- Phase imbalance
When switched off:
- Check the direction of rotation (phase order)
- Check the resistance and continuity of the windings
- Check the electrical protection
11.8 - Preventive maintenance
M 01V
Please consult LEROY-SOMER who, in its continuous search for
ways to help customers, has evaluated numerous methods of
preventive maintenance.
The diagram and table below give the recommended equipment
to use and the ideal positions to take measurements of all
parameters which can affect the operation of the machine,
such as eccentricity, vibration, state of the bearings, structural
problems, electrical problems, etc.
M 02V
3
4
1
2
M 02A
5
M 01H
Detector
Measurement
1 Accelerometer
2 3 4 5
For measuring vibrations
1
2 Photo-electric
3 4 5
cell
For measuring speed and phase (balancing)
1
2
3 Clamp
4 5 ammeter
For measuring current (D.C. and 3-phase A.C.)
1
2
3
4 Voltage
5
probe
For measuring voltages
2
3
4
5 Infra-red probe
For measuring temperature
M 02H
Measurement points
M 01V M 01H M 02V M 02H M 02A Shaft
•
•
•
•
•
•
•
•
E01
E02
E03
•
•
•
•
•
•
23
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN - FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
12 - DISMANTLING AND
REASSEMBLY PROCEDURE
12.1 - LSN 80 to LSN 160 MP/LR FLSN 80 to 132 motors
(F)LSN 80 - 90
foot mounted
6
59
(F)LSN 80 - 90
flange mounted (or foot and flange)
5
6
308
7
59
60
50
30
5
12.1.1 - Dismantling
- Remove the screws (27) and then take off the cover (13).
- Pull out the fan (7) using a hub remover or 2 levers (for example, 2
screwdrivers) diametrically opposed to one another, using the shield
(6) for support.
- Remove the tie rods (14).
- Remove the key (21).
- Using a wooden mallet, tap the shaft on the fan side in order to loosen
the drive end shield (5).
- Remove the rotor shaft (3) and the DE shield (5) taking care not to
knock the winding.
- Remove the shield on the fan side (6).
- Take out the preloading washer (59) and the seal of the NDE shield
(54) for LSN 100, 112 and 132 motors.
- Remove the circlip (60) from flanged motors using angled circlip
pliers.
- Separate the DE shield from the rotor shaft.
- The shaft can then be seen with its 2 bearings and, if appropriate, the
circlip.
Use a bearing remover to take out the bearings, taking care not to
knock the running surfaces of the shaft.
50
7
30
NDE
NDE
DE
(F)LSN 100 - 112 - 132
flange mounted (or foot and flange)
(F)LSN 100 - 112 - 132
foot mounted
59
6
54
50
30
NDE
39
DE
5
6
308
54
DE
59
60
50
30
NDE
5
39
DE
12.1.2 - Reassembling motors without circlip
- Mount the bearings on the rotor shaft.
- Insert the rotor into the stator taking all possible precautions not to
knock the winding.
- Mount the DE shield (5).
- Place the preloading washer (59) in the bearing housing, then mount
the NDE shield (6).
- Place the tie rods (14) in position and tighten the nuts diagonally to the
recommended torque (see section 11.2.4).
- Mount the shield seals (39, 54, 308) with grease.
- Mount the fan (7) using a drift to bed it into position.
- Check that the motor turns freely by hand and that there is no radial
play.
- Replace the cover (13) and fix it with the screws (27).
12.1.3 - Reassembling motors with flange and circlip
- Mount the DE bearing (30) in the flange (5) using the outer slip-ring
for support.
- Fit the circlip (60).
- Mount this assembly on the rotor (3) using the inner slip-ring for
support.
- Mount the NDE bearing on the rotor.
- Insert the rotor (3) and shield (5) assembly in the stator taking care not
to knock the winding.
- Place the preloading washer (59) in the bearing housing, then mount
the NDE shield (6).
- Place the tie rods (14) in position and tighten the nuts diagonally to the
recommended torque (see section 11.2.4).
- Mount the shield seals (39, 54, 308) with grease.
- Mount the fan (7) using a drift to bed it into position.
- Check that the motor turns freely by hand and that there is no axial
play.
- Replace the cover (13) and fix it with the screws (27).
- Replace the key (21).
24
LSN 160 MP/LR
flange mounted (or foot and flange)
LSN 160 MP/LR
foot mounted
59
6
54
50
NDE
30
DE
5
6
39
54
NDE
59
60
50
30
5
39
DE
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN - FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
LSN 80 to LSN 160 MP/LR - FLSN 80 to FLSN 132
13
27
71 b
78
50
98
7
59
3
21
22
26
84
2
6
54
85
14
25
30
IM B3
60
1
5
23
IM B14
39
308
5
39
IM B5
5
LSN 80 to LSN 160 MP/LR - FLSN 80 to FLSN 132
Ref.
Description
Ref.
Description
Ref.
Description
1
Wound stator
22
Shaft extension washer
59
Preloading (wavy) washer
2
Housing
23
Shaft extension screw
60
Circlip
3
Rotor
25
Lifting ring
71 b
Metal terminal box
5
DE shield
26
Nameplate
78
Cable gland
6
NDE shield
27
Fan cover screw
84
Terminal block
7
Fan
30
DE bearing
85
Set screw
13
Fan cover
39
Drive end seal
98
Connectors
14
Tie rods
50
Non drive end bearing
308
Labyrinth seal
21
Shaft extension key
54
NDE seal
25
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN
Three-phase induction motors for atmospheres containing explosive gases and dust
12.2 - LSN 160 M/L, LSN 180 MT/LR motors
12.2.1 - Dismantling
- Remove the screws (27) and then take off the cover (13).
- Pull out the fan (7) using a hub remover or 2 levers diametrically
opposite one another, using the shield (6) for support.
- Take out the key (21) and remove the seals (39 and 54 for foot
mounted motors, 54 for flange mounted motors).
- Unscrew the tie rods (14) then remove them.
- Unscrew the fixing screws (40) on the inner bearing retainer
(33).
- Using a bronze drift, remove the shields (5 and 6) by tapping
gently on the shield bosses. Take out the preloading washer
(59).
- Remove the circlip (38) if necessary (flange mounted motor).
- Remove the rotor (3) from the stator (1) taking care not to touch
the winding.
- Take out the bearings (30) and (50) using a bearing remover,
while protecting the end of the shaft extension with a washer.
Avoid knocking the running surfaces of the shaft.
LSN 160 M/L - LSN 180 MT/LR
foot mounted
standard bearings
NDE
DE
LSN 160 M/L - LSN 180 MT/LR
foot mounted
drive end roller bearings
LSN 160 M/L - LSN 180 MT/LR
flange mounted (or foot and flange)
standard bearings
NDE
DE
LSN 160 M/L - LSN 180 MT/LR
flange mounted (or foot and flange)
drive end roller bearings
12.2.2 - Reassembly
- See section 11.2.4 before reassembly.
- Insert the inner bearing retainer (33) at the drive end of the rotor
then fit new bearings on the shaft.
- Mount the circlip (38) for flange mounted motors.
- Insert the rotor (3) in the stator (1) taking care not to knock the
winding.
- Position the preloading washer (59) with a small amount of
grease in the back of the bearing cage of the NDE shield (6), then
remount the NDE shield (6), positioning it on the stator.
- To fit the bearing retainer (33), screw a threaded rod with the
same diameter as the screws (40) into one of the tapped holes
of the bearing retainer to maintain its angular position when
refitting the DE shield (5). When there is a flange, mount a new
seal (39) with the spring facing outwards.
- Remount the DE shield (5) taking care to allow for the positioning
of a bearing retainer if used.
- Place the tie rods (14) in position and tighten the nuts diagonally
to the recommended torque (see section 11.2.4).
- Fix the bearing retainer with its screws (33).
- Mount the shield seals with grease (54 at the non drive end, 39
at the drive end for foot mounted motors).
- Mount the fan (7) using a drift to bed it into position.
- Check that the rotor turns freely by hand (that there is no axial
play if there is a locked end shield).
- Replace the cover (13) and fix it with the screws (27).
- Replace the key (21).
The shields must be fitted with a DE inner bearing retainer.
26
NDE
DE
NDE
DE
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN
Three-phase induction motors for atmospheres containing explosive gases and dust
LSN 160 M/L, LSN 180 MT/LR
50
74
70
54
6
59
14
7
13
27
3
21
30
1
26
2
5
40
33
38
39
LSN 160 M/L, LSN 180 MT/LR
Ref.
Description
Ref.
Description
Ref.
Description
1
Wound stator
14
Tie rods
39
Drive end seal
2
Housing
21
Key
40
Cover fixing screw
3
Rotor
26
Nameplate
50
Non drive end bearing
5
DE shield
27
Fan cover screw
54
NDE seal
6
NDE shield
30
DE bearing
59
7
Fan
33
Inner DE bearing retainer
13
Fan cover
38
Drive end bearing circlip
70
74
50
59
6
54
7
14 70
74
Preloading
13 (wavy) washer
27
Terminal box
Terminal box cover
3
21
27
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN
Three-phase induction motors for atmospheres containing explosive gases and dust
12.3 - LSN 180 L, LSN 200,
LSN 225 ST/MT/MR, LSN 250 MZ motors
12.3.1 - Dismantling
- Remove the screws (27) and then take off the cover (13).
- Pull out the fan (7) using a hub remover or 2 levers diametrically
opposite one another, using the shield (6) for support.
- Take out the key (21) and remove the seals (39 and 54 for foot
mounted motors, 54 for flange mounted motors).
- Unscrew the tie rods (14) then remove them.
- Unscrew the fixing screws (40) on the inner bearing retainer
(33).
- Using a bronze drift, remove the shields (5 and 6) tapping lightly
on the shield bosses. Recover the preloading washer (59).
- Remove the circlip (38) if appropriate.
- Remove the rotor (3) from the stator (1) taking care not to touch
the winding.
- Take out the bearings (30) and (50) using a bearing remover,
while protecting the end of the shaft extension with a washer.
Avoid knocking the running surfaces of the shaft.
LSN 180 L - LSN 200
foot mounted
standard bearings
NDE
DE
LSE 225 ST/MT/MR
LSN 250 MZ
foot mounted
standard bearings
LSN 180 L - LSN 200
flange mounted (or foot and flange)
standard bearings
NDE
DE
LSE 225 ST/MT/MR
LSN 250 MZ
flange mounted (or foot and flange)
standard bearings
12.3.2 - Reassembly
- See section 11.2.4 before reassembly.
- Insert the inner bearing retainer (33) at the drive end of the rotor
then fit new bearings on the shaft.
- Fit the circlip (38) if necessary.
- Insert the rotor (3) in the stator (1) taking care not to knock the
winding.
- Position the preloading washer (59) with a small amount of
grease in the back of the bearing cage of the NDE shield (6), then
remount the NDE shield (6), positioning it on the stator.
- To fit the bearing retainer (33), screw a threaded rod with the
same diameter as the screws (40) into one of the tapped holes
of the bearing retainer to maintain its angular position when
refitting the DE shield (5). When there is a flange, mount a new
seal (39) with the spring facing outwards.
- Remount the DE shield (5) taking care to allow for the
positioning of a bearing retainer if used.
- Place the tie rods (14) in position and tighten the nuts diagonally
to the recommended torque (see section 11.2.4).
- Fix the bearing retainer (33) with the screws (40).
- Mount the shield seals with grease (54 at the non drive end, 39
at the drive end for foot mounted motors).
- Mount the fan (7) using a drift to bed it into position.
- Check that the rotor turns freely by hand (that there is no axial
play if there is a locked end shield).
- Replace the cover (13) and fix it with the screws (27).
- Replace the key (21).
The shields must be fitted with a DE inner bearing retainer.
28
NDE
DE
LSN 180 L - LSN 200
LSE 225 ST/MT/MR
LSN 250 MZ
foot mounted
drive end roller bearings
NDE
DE
NDE
DE
LSN 180 L - LSN 200
LSE 225 ST/MT/MR
LSN 250 MZ
flange mounted (or foot and flange)
drive end roller bearings
NDE
DE
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN
Three-phase induction motors for atmospheres containing explosive gases and dust
LSN 180 L, LSN 200, LSN 225 ST/MT/MR, LSN 250 MZ
5
42
21
3
74
70
1
25
50
59
6
7
14
54
13
27
33
30
26
2
320
319
40
5
39
38
LSN 180 L, LSN 200, LSN 225 ST/MT/MR, LSN 250 MZ
Ref.
Description
Ref.
Description
Ref.
Description
1
Wound stator
25
Lifting ring
50
Non drive end bearing
2
Housing
26
Nameplate
54
NDE seal
3
Rotor
27
Fan cover screw
59
Preloading (wavy) washer
5
DE shield
30
DE bearing
70
Terminal box
6
NDE shield
33
Inner DE bearing retainer
74
Terminal box cover
7
Fan
38
Drive end bearing circlip
319
Right foot
13
Fan cover
39
Drive end seal
320
Left foot
14
Tie rods
40
Cover fixing screw
21
Key
42
Grease nipples (optional for LSN 180 L, LSN 200)
29
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN
Three-phase induction motors for atmospheres containing explosive gases and dust
12.4 - LSN 250 ME, LSN 280 SC/MC motors
12.4.1 - Dismantling
- Remove the screws (27) and then take off the cover (13).
- Pull out the fan (7) using a hub remover or 2 levers diametrically
opposite one another, using the shield (6) for support.
- Take out the key (21) and remove the seals (39) and (54).
- Unscrew the DE shield fixing screws (270) and (273).
- Unscrew the fixing screws (40) on the inner bearing retainer
(33).
- Using a bronze drift, remove the shields (5 and 6) by tapping
gently on the shield bosses. Take out the preloading washer
(59).
- Remove the circlip (38).
- Remove the rotor (3) from the stator (1) taking care not to touch
the winding.
- Take out the bearings (30) and (50) using a bearing remover,
while protecting the end of the shaft extension with a washer.
Avoid knocking the running surfaces of the shaft.
12.4.2 - Reassembly
- See section 11.2.4 before reassembly.
- Insert the inner bearing retainer (33) at the drive end of the rotor
then fit new bearings on the shaft.
- Fit the circlip (38).
- Insert the rotor (3) in the stator (1) taking care not to knock the
winding.
- When fitting the bearing retainer (53), screw a threaded rod with
the same diameter as the screws (62) into one of the tapped
holes of the bearing retainer to maintain its angular position
when refitting the NDE shield (6).
- Position the preloading washer (59) with a small amount of
grease in the back of the bearing cage of the NDE shield (6), then
remount the NDE shield (6), positioning it on the stator.
- Fix the bearing retainer (53) with the screws (62).
- When fitting the bearing retainer (33), screw a threaded rod with
the same diameter as the screws (40) into one of the tapped
holes of the bearing retainer to maintain its angular position
when refitting the DE shield (5). Mount a new seal (39).
- Remount the shield (5) taking care to allow for the positioning
of the bearing retainer.
- Place the fixing screws (270) and (273) in position and tighten
them diagonally up to the recommended torque (see
section 11.2.4).
- When fitting the bearing retainer (53), screw a threaded rod with
the same diameter as the screws (62) into one of the tapped
holes of the bearing retainer to maintain its angular position
when refitting the NDE shield (6).
- Fix the bearing retainer (33) with the screws (40).
- Mount the shield seals with grease (54 at the non drive end,
39 at the drive end for foot mounted motors).
- Mount the fan (7) using a drift to bed it into position.
- Check that the rotor turns freely by hand (that there is no axial
play if there is a locked end shield).
- Replace the cover (13) and fix it with the screws (27).
- Replace the key (21).
The shields must be fitted with a DE inner bearing retainer.
30
LSN 250 ME
LSN 280 SC/MC
foot or flange mounted
standard bearings
NDE
DE
LSN 250 ME
LSN 280 SC/MC
foot or flange mounted
drive end roller bearings
NDE
DE
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN
Three-phase induction motors for atmospheres containing explosive gases and dust
LSN 250 ME, LSN 280 SC/MC
53
3
39
40
42
38
30
33
50
60
59
54
42
13
27
74
70
21
6
62
273
7
270
5
1
2
LSN 250 ME, LSN 280 SC/MC
Ref.
Description
Ref.
Description
Ref.
Description
1
Wound stator
30
DE bearing
59
Preloading (wavy) washer
2
Housing
33
Inner DE bearing retainer
60
Non drive end bearing circlip
3
Rotor
38
Drive end bearing circlip
62
Cover fixing screw
5
DE shield
39
Drive end seal
70
Terminal box
6
NDE shield
40
Cover fixing screw
74
Terminal box cover
7
Fan
42
Grease nipples
270
DE shield fixing screw
13
Fan cover
50
Non drive end bearing
273
NDE shield fixing screw
21
Shaft extension key
53
Inner NDE bearing retainer
27
Fan cover screw
54
NDE seal
31
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN
Three-phase induction motors for atmospheres containing explosive gases and dust
12.5 - LSN 280 SK/MK, LSN 315 motors
12.5.1 - Dismantling
- Remove the screws (27), the grease nipple (42) and its
extension, then take off the cover (13).
- Pull out the fan (7) using a hub remover or 2 diametrically
opposed levers, using the shield (6) for support; for an aluminium
fan, heat the hub to approximately 100°C before removing it.
- Take out the key (21).
- Unscrew the tie rods (14) then remove them.
- Unscrew the DE bearing retainer (33) fixing screws (40) and
NDE bearing retainer (32) and (52) fixing screws (62), and
remove the bearing retainers.
- Unscrew the "CHc" screws of the mobile valves (35 and 56)
then unscrew the valves using a hook spanner or a conical
bronze drift; unscrew the valves by hand and remove them. The
valves hold the seals (39 and 54) in place.
- Remove the fixed valves (34 and 35) from the bearing housings.
- Using a bronze drift, remove the shields (5 and 6) by tapping
gently on the shield bosses.
Check that the bearing retainer (53) is smaller in diameter than
the stator, otherwise remove the bearing (50) as per the following
instructions.
- Remove the rotor (3) from the stator (1) at the drive end, taking
care not to touch the winding with the inner bearing retainer if
there is no internal turbine. Take out the bearings (30) and (50)
using a bearing remover, while protecting the end of the shaft
extension with a washer. Avoid knocking the running surfaces of
the shaft.
- The bearings are removed either separately or with the bearing
retainers (33 and 53). To avoid damaging the bearing retainers,
heat the outer bearing ring (the bearing should be discarded).
- Recover the preloading washer or springs (59) from the bearing
retainer (53).
- Mount the outer bearing retainer (52) with the bearing retainer
locking screws (62), making sure that the grease drain hole is at
the bottom.
- Mount the shield (5) at the drive end, positioning it on the stator,
then mount the fixed valve (34) in the shield bearing housing.
- Mount the mobile valve (35) by either screwing it or locking it,
having carefully installed the seal (39) on the valve.
- Mount the outer bearing retainer (32) with the bearing retainer
locking screws (40), making sure that the grease drain hole is at
the bottom.
- Place the tie rods (14) in position, not forgetting the feet of the
cover (380), tighten the nuts diagonally without locking them so
that the feet of the cover can be positioned when it is mounted.
- Mount the fan (7) using a drift to bed it in position or by heating
the hub of the aluminium fan to approximately 100°C.
- Check that the motor turns freely by hand and that there is no
axial play.
- Replace the protective cover (13) and fix it with the screws (27),
replace the grease nipple (42) and its extension.
- Tighten the rod nuts (14), always diagonally, up to the torque
recommended in section 6.1.
- Replace the key (21).
LS 280 SK/MK - LS 315
standard bearings
52
32
59
53
33
5
62
32
40
55
56
54
50
30
34
NDE
12.5.2 - Reassembly
- See section 6.1 before reassembly.
- Insert the inner bearing retainer (33) at the rotor drive end and
the inner bearing retainer (53) at the non drive end, not forgetting
to insert the preloading springs (59).
- Fill with new grease: the correct amount of new grease for the
bearing is 50% of the free space.
- Mount the new bearings (30 and 50) on the shaft, see section
6.3 on mounting bearings.
- Insert the rotor (3) in the stator (1) taking care not to knock the
winding.
- Screw a rod with the same thread diameter as the screws (40)
and (62) into one of the tapped holes of the bearing retainers (33)
and (53) to maintain the position of the grease nipple when
remounting the shields (5 and 6).
- Check that the preloading springs are properly installed.
- Mount the shield (6) at the non drive end, positioning it on the
stator, then mount the fixed valve (55) in the shield bearing
housing.
- Mount the mobile valve (56) by either screwing it or locking it,
having carefully installed the seal (54) on the valve.
6
35
39
DE
LS 280 SK/MK - LS 315
drive end roller bearings
52
55
6
53
33
5
32
62
40
56
54
NDE
50
30
34
35
DE
39
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
LSN
Three-phase induction motors for atmospheres containing explosive gases and dust
LSN 280 SK/MK, LSN 315
70
1
39
34
30
42
74
42
6
53
54
52
27
7
14
13
21
35
32
2
59
50
380
55
56
62
3
33
40
5
LSN 280 SK/MK, LSN 315
Ref.
Description
Ref.
Description
30
DE bearing
53
Inner NDE bearing retainer
32
Outer DE bearing retainer
54
NDE seal
Rotor
33
Inner DE bearing retainer
55
NDE fixed grease valve
5
DE shield
34
DE fixed grease valve
56
NDE mobile grease valve
6
NDE shield
35
DE mobile grease valve
59
Preloading washer or spring
7
Fan
39
Drive end seal
62
Cover fixing screw
13
Fan cover
40
Cover fixing screw
70
Terminal box
14
Tie rods
42
Grease nipples
74
Terminal box cover
21
Key
50
Non drive end bearing
380
Cover feet
27
Fan cover screw
52
Outer NDE bearing retainer
1
Wound stator
2
Housing
3
Ref.
Description
33
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
12.6 - FLSN 160 and 180 motors
12.6.1 - Dismantling the NDE shield
- Remove the fixing screws (27) and then take off the cover
(13).
- Take out the fan (7).
- Remove the fixing screws (273) from the NDE shield (6).
- Using two levers or a flexible hammer, disengage the NDE
shield (6) taking care not to place it aslant. Remove the shield
by sliding it along the shaft. The seal (54) follows behind and is
no longer usable.
- Recover the preloading washer (59) which should be replaced
in its housing.
FLSN 160 and 180
flange mounted (or foot/flange)
standard bearings
FLSN 160 and 180
foot mounted (except V6)
standard bearings
6
59
54
33
50
5
30
6
39
NDE
59
54
33
50
5
30
NDE
DE
39
DE
12.6.2 - Dismantling the DE shield
- Remove the fixing screws (270) from the DE shield.
- Using an appropriate lifting tool, take out the rotor (3) + DE
shield (5) assembly, without knocking the winding.
- Remove the fixing screws (40) from the inner DE bearing
retainer (33).
- Take out the key (21).
- Using two levers or a flexible hammer, disengage the DE
shield (5) from the rotor (3) taking care not to place it aslant.
- Remove the shield by sliding it along the shaft. The seal (39)
follows behind and is no longer usable.
FLSN 160 and 180
IM V6 foot mounted
standard bearings
6
54
12.6.3 - Changing the antifriction bearings
- Remove the bearings (30) and (50) with an appropriate tool,
protecting the end of the shaft extension. Avoid knocking the
running surfaces of the shaft.
- Change the bearings in accordance with the instructions
described in the General information in section 6 (shrink-fitting
only).
59
50
33
5
30
NDE
FLSN 160 and 180
foot mounted
drive end roller bearings
6
53
33
39
DE
FLSN 160 and 180
flange mounted (or foot/flange)
drive end roller bearings
5
6
53
33
5
IMPORTANT: Before undertaking any of these procedures,
read the section “CHECKS BEFORE REASSEMBLY”.
12.6.4 - Reassembly
- Mount the bearings on the rotor shaft (not forgetting the inner
DE bearing retainer (33)!).
- Slide the DE shield (5) onto the bearing (30).
- Replace the fixing screws (40) on the inner bearing retainer
(33).
- Insert the rotor + shield assembly in the stator without
knocking the winding.
- Present the shields, grease nipples facing upwards, not
forgetting the preloading washer (59) at the non drive end.
Slide them into position.
- Fit the shields firmly in place.
- Check that the rotor turns freely by hand.
From now on, we recommend checking at every step that
the rotor turns freely by hand before continuing to the next
instruction.
- Replace the shield fixing screws (270) and (273).
- Use a drift to fit a new seal (54).
- Replace the fan (7).
- Replace the cover (13) and reinsert the fixing screws (27).
- Use a drift to fit the new seal (39).
- Lubricate the DE and NDE antifriction bearings, turning the
shaft by hand.
34
54
50
NDE
30
DE
39
54
50
NDE
30
39
DE
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
FLSN 160 and 180
FLSN 160 and 180
Ref.
Description
Ref.
Description
27
Fan cover screw
59
NDE preloading (wavy) washer
30
DE bearing
64
NDE grease nipple
Rotor
33
Inner DE bearing retainer
70
Stator terminal box
5
DE shield
39
DE seal
74
Terminal box cover
6
NDE shield
40
Cover fixing screw
81
Cable gland support plate
7
Fan
42
DE grease nipple
270
DE shield fixing screw
13
Fan cover
50
Non drive end bearing
273
NDE shield fixing screw
21
Shaft extension key
54
NDE seal
1
Wound stator
2
Housing
3
Ref.
Description
35
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
12.7 - FLSN 200 to 225 ST motors
12.7.1 - Dismantling the NDE shield
- Remove the fixing screws (27) and then take off the cover (13).
- Take out the fan (7).
- Remove the fixing screws from the inner NDE bearing retainer
(53).
- Remove the fixing screws (273) from the NDE shield (6).
- Using two levers or a flexible hammer, disengage the NDE
shield (6) taking care not to place it aslant. Remove the shield by
sliding it along the shaft. The seal (54) follows behind and is no
longer usable.
- Put the dismantled components to one side and recover the
preloading washer (59), which should be replaced in its housing.
12.7.2 - Dismantling the DE shield
- Dismantle the DE shield without removing the rotor (3). To do
this:
- Remove the fixing screws (40) from the inner DE bearing
retainer (33).
- Remove the fixing screws (270) from the DE shield (5).
- Remove the fixing screws from the inner DE bearing retainer
(33).
- Take out the key (21).
- Using two levers or a flexible hammer, disengage the DE shield
(5) taking care not to place it aslant.
- Remove the shield by sliding it along the shaft. The seal (39)
follows behind and is no longer usable.
12.7.3 - Changing the antifriction bearings
- Using an appropriate lifting tool, take out the rotor without
knocking the winding.
- Remove the bearings (30) and (50) with an appropriate tool,
protecting the end of the shaft extension. Avoid knocking the
running surfaces of the shaft.
- The moving parts of the grease valve (35) for the drive end and
(56) for the non drive end follow.
- Put the components to one side (55) - (56) for the non drive end
and (34) - (35) for the drive end.
- Change the bearings in accordance with the instructions
described in the General information in section 6 (shrink-fitting
only).
IMPORTANT: Before undertaking any of these procedures, read
the section “CHECKS BEFORE REASSEMBLY”.
12.7.4 - Reassembly
- Mount the DE bearing (30) on the rotor shaft (take care not to
forget the inner bearing retainer (33)!), and also the NDE bearing
(50) if and only if the stator inner Ø allows the inner NDE bearing
retainer (53) to pass through.
- Install the fixed part of the grease valves (ref. (55) for the non
drive end and (34) for the drive end).
- Shrink-fit the moving part of the grease valves (ref. (56) for the
non drive end and (35) for the drive end). Make absolutely sure
that it is resting on the bearing internal ring.
- Insert the rotor in the stator taking care not to knock the winding.
Install the NDE bearing if this has not already been done.
- Present the shields, grease nipples facing upwards. Begin with
the DE shield (5). Fix a dowel pin in one of the inner bearing
retainer (33) tapped holes so that the grease inlet pipes fully
correspond. Slide it into position.
36
- End with the NDE shield (6). Fix a dowel pin in one of the inner
bearing retainer (53) tapped holes so that the grease inlet
pipes fully correspond.
- Lift the rotor slightly and fit the shields onto the housing.
From now on, we recommend checking at every step that
the rotor turns freely by hand before continuing to the next
instruction.
- Replace the shield fixing screws (270) and (273).
- Replace the inner bearing retainer fixing screws (33) and (53).
- Use a drift to fit a new seal (54).
- Replace the fan (7).
- Use a drift to fit a new seal (39).
- Replace the cover (13) and reinsert the fixing screws (27).
- Lubricate the DE and NDE antifriction bearings, turning the
shaft by hand.
FLSN 200 to 225 ST
standard bearings
6
54
53
50
NDE
33
30
34
FLSN 200 to 225 ST
drive end roller bearings
5
35
DE
6
39
54
53
50
NDE
33
30
5
34
39
DE
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
FLSN 200 to 225 ST
FLSN 200 to 225 ST
Ref.
Description
Ref.
Description
Ref.
Description
1
Wound stator
33
Inner DE bearing retainer
56
Moving part of NDE grease valve
2
Housing
34
Fixed part of DE grease valve
59
NDE preloading (wavy) washer
3
Rotor
35
Moving part of DE grease valve
64
NDE grease nipple
5
DE shield
39
DE seal
70
Stator terminal box
6
NDE shield
40
Cover fixing screw
74
Stator terminal box lid
7
Fan
42
DE grease nipple
81
Cable gland support plate
13
Fan cover
50
Non drive end bearing
270
DE shield fixing screw
21
Shaft extension key
53
Inner NDE bearing retainer
273
NDE shield fixing screw
27
Fan cover screw
54
NDE seal
406
DE grease valve cover plate
30
DE bearing
55
Fixed part of NDE grease valve
456
NDE grease valve cover plate
37
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
12.8 - FLSN 225 M to 280 motors
12.8.1 - Dismantling the NDE shield
- Remove the fixing screws (27) and then take off the cover (13).
- Remove the shaft extension screw if necessary.
- Take out the fan (7).
- Remove the fixing screws from the inner NDE bearing retainer
(53).
- Remove the fixing screws (273) from the NDE shield (6).
- Remove the fan key if appropriate.
- Using two levers or a flexible hammer, disengage the NDE
shield (6) taking care not to place it aslant. Remove the shield by
sliding it along the shaft.
- Put the dismantled components to one side and recover the
preloading washer (59), which should be replaced in its housing.
From now on, we recommend checking at every step that
the rotor turns freely by hand before continuing to the next
instruction.
- Replace the shield fixing screws (270) and (273).
- Insert the fixing screws on the inner bearing retainers (33) and
(53). Replace the AZ washers to ensure a perfect seal.
- Replace the fan key if appropriate.
- Replace the fan (7).
- Replace the shaft extension screw if necessary.
- Replace the cover (13) and reinsert the fixing screws (27).
- Lubricate the DE and NDE antifriction bearings, turning the
shaft by hand.
12.8.2 - Dismantling the DE shield
- Dismantle the DE shield without removing the rotor (3). To do
this:
- Remove the fixing screws (270) from the DE shield (5).
- Remove the fixing screws (40) from the inner DE bearing
retainer (33).
- Take out the key (21).
- Using two levers or a flexible hammer, disengage the DE shield
(5) taking care not to place it aslant.
- Remove the shield by sliding it along the shaft.
FLSN 225 M to 280
standard bearings
5
416
12.8.3 - Changing the antifriction bearings
- Using an appropriate lifting tool, take out the rotor without
knocking the winding.
- Take off the DE circlip (38).
- Remove the bearings (30) and (50) with an appropriate tool,
protecting the end of the shaft extension. Avoid knocking the
running surfaces of the shaft.
- Change the bearings in accordance with the instructions
described in the General information in section 6 (shrink-fitting
only).
33
6
53
50
DE
NDE
FLSN 225 M to 280
drive end roller bearings
5
416
6
IMPORTANT: Before undertaking any of these procedures, read
the section “CHECKS BEFORE REASSEMBLY”.
12.8.4 - Reassembly
- Mount the DE bearing (30) on the rotor shaft (take care not to
forget the inner bearing retainer (33) and the circlip (38)!), and
also the NDE bearing (50) if and only if the stator inner Ø allows
the inner NDE bearing retainer (53) to pass through.
- Insert the rotor in the stator taking care not to knock the winding.
Install the NDE bearing if this has not already been done.
- Fill the decompression grooves (416) located in the shaftway
with grease.
- Present the shields, grease nipples facing upwards. Begin with
the DE shield (5). Fix a dowel pin in one of the inner bearing
retainer (33) tapped holes so that the grease inlet pipes fully
correspond.
- End with the NDE shield (6). Fix a dowel pin in one of the inner
bearing retainer (53) tapped holes so that the grease inlet
pipes fully correspond.
- Lift the rotor slightly and fit the shields in place.
38
33
NDE
53
50
DE
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
FLSN 225 M to 280
74
75
77
64
13
27
81
70
69
26
3
38
5
42
30
33
21
6
11
7
40
406
271
53
270
50
59
456
12
10
273
2
5
1
FLSN 225 M to 280
Ref.
Description
Ref.
Description
Ref.
Description
1
Wound stator
26
Nameplate
69
Terminal box base seal
2
Housing
27
Fan cover screw
70
Stator terminal box
3
Rotor
30
DE bearing
74
Stator terminal box lid
5
DE shield
33
Inner DE bearing retainer
75
Terminal box lid fixing screw
6
NDE shield
38
DE bearing circlip
77
Terminal box lid seal
7
Fan
40
Cover fixing screw
81
Cable gland support plate
10
Turbine or fan screw (280 - 4p)
42
DE grease nipple
270
DE shield fixing screw
11
Lock washer (not shown) (280 - 4p)
50
Non drive end bearing
271
DE shield fixing nut
12
Lock washer (280 - 4p)
53
Inner NDE bearing retainer
273
NDE shield fixing screw
13
Fan cover
59
NDE preloading (wavy) washer
406
DE grease valve cover
plate drive end - (plug)
21
Shaft extension key
64
NDE grease nipple
456
NDE grease valve cover
plate drive end - (plug)
39
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
12.9 - FLSN 315 ST motors
12.9.1 - Dismantling the NDE shield
- Remove the grease nipple extension (65).
- Remove the fixing screws (27) and then take off the cover
(13).
- Remove the screws and washer from the shaft extension.
- Take out the fan (7).
- Take out the fan key (not shown) and the moving part of the
grease valve (56).
- Remove the fixing screws from the inner NDE bearing retainer
(53).
- Remove the fixing screws (273) from the NDE shield (6).
- Using two levers or a flexible hammer, disengage the NDE
shield (6). Remove and hold the shield, sliding it along the
shaft.
- Put the dismantled components to one side and recover the
preloading washers (59), which should be replaced in their
housing.
- End with the non-fixed bearing. Fix a dowel pin in one of the
inner bearing retainer tapped holes so that the grease inlet
pipes fully correspond.
- Lift the rotor slightly and fit the shields in place.
From now on, we recommend checking at every step that
the rotor turns freely by hand before continuing to the next
instruction.
- Replace the shield fixing screws (270) and (273).
- Replace the inner bearing retainer fixing screws (33) and
(53).
- Refit the moving part of the grease valve (56).
- Replace the fan (7) with its key.
- Replace the shaft extension screw with its washer.
- Replace the cover (13).
- Coat the thread of the moving part of the DE grease valve
(35), with anti-vibration adhesive. Screw it tight.
- Lubricate the DE and NDE bearings.
12.9.2 - Dismantling the DE shield
- Dismantle the DE shield without removing the rotor (3). To do
this:
- Take out the key (21).
- Heat the moving part of the DE grease valve (35). Unscrew
and remove it.
- Remove the fixing screws from the inner DE bearing retainer
(33).
- Remove the fixing screws (270) from the DE shield.
- Using two levers or a flexible hammer, disengage the DE
shield (5) taking care not to place it aslant.
- Remove the shield by sliding it along the shaft.
- Place the dismantled components to one side and recover
part no. (35) which should be replaced in its housing, along
with the preloading washer (59).
FLSN 315 ST
standard bearings
59
6
56
50
53
33
5
30
35
NDE
IMPORTANT: Before undertaking any of these procedures,
read the section “CHECKS BEFORE REASSEMBLY”.
12.9.4 - Reassembly
- Mount the DE bearing (30) on the rotor shaft (take care not to
forget the inner bearing retainer (33)!) and also the NDE
bearing (50) and the inner NDE bearing retainer (53).
- Insert the rotor in the stator taking care not to knock the
winding.
- Don't forget to replace the preloading washers (59) in their
housing.
- Begin with the fixed bearing (see above). Fix a dowel pin in
one of the inner bearing retainer tapped holes so that the
grease inlet pipes fully correspond.
40
6
53
56
DE
50
NDE
6
53
56
50
NDE
33
5
30
35
DE
33
5
30
DE
FLSN 315 to 355 LD
drive end roller bearings
12.9.3 - Changing the antifriction bearings
- Using an appropriate lifting tool, take out the rotor without
knocking the winding.
- Remove the bearings (30) and (50) with an appropriate tool,
protecting the end of the shaft extension. Avoid knocking the
running surfaces of the shaft.
- Change the bearings in accordance with the instructions
described in the General information in section 6 (shrink-fitting
only).
FLSN 315 M, L
355 LA, LB, LC, LD
standard bearings
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
FLSN 315 ST
81
70
122
40
50
65
64
3
33
5
42
74
27
273
53
6
456
456B
40
7
12
13
2
270
406
406B
44
30
21
5
FLSN 315 ST
Ref.
Description
Ref.
Description
Ref.
Description
2
Housing
33
Inner DE bearing retainer
70
Stator terminal box
3
Rotor
40
Cover fixing screw
74
Stator terminal box lid
5
DE shield
42
DE grease nipple
81
Cable gland support plate
6
NDE shield
44
Preloading (wavy) washer
270
DE shield fixing screw
7
Fan
50
Non drive end bearing
273
NDE shield fixing screw
12
Lock washer
53
Inner NDE bearing retainer
406
DE grease valve cover plate
13
Fan cover
56
Moving part of NDE grease valve
406B Lipseal
21
Shaft extension key
59
Preloading (wavy) washer
456
27
Fan cover screw
64
NDE grease nipple
456B Lipseal
30
DE bearing
65
Extension for NDE grease nipple
NDE grease valve cover plate
41
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
12.10 - FLSN 315 M to 355 LD motors
12.10.1 - Dismantling the NDE shield
- Remove the grease nipple extension (65).
- Remove the fixing screws (27) and then take off the cover (13).
- Remove the screws and washer from the shaft extension.
- Take out the fan (7).
- Take out the fan key (not shown).
- Remove the fixing screws from the inner NDE bearing retainer
(53).
- Remove the fixing screws (273) from the NDE shield (6).
- Using two levers or a flexible hammer, disengage the NDE
shield (6). Remove and hold the shield, sliding it along the shaft.
- Put the dismantled components to one side.
From now on, we recommend checking at every step that
the rotor turns freely by hand before continuing to the next
instruction.
- Replace the shield fixing screws (270) and (273).
- Replace the inner bearing retainer fixing screws (33) and (53).
- Replace the fan (7) with its key.
- Replace the shaft extension screw with its washer.
- Replace the cover (13).
- Lubricate the DE and NDE bearings.
FLSN 315 M - 355 LD
standard bearings
12.10.2 - Dismantling the DE shield
- Dismantle the DE shield without removing the rotor (3). To do
this:
- Take out the key (21).
- Remove the fixing screws from the inner DE bearing retainer
(33).
- Remove the fixing screws (270) from the DE shield.
- Using two levers or a flexible hammer, disengage the DE shield
(5) taking care not to place it aslant.
- Remove the shield by sliding it along the shaft.
- Put the dismantled components to one side.
12.10.3 - Changing the antifriction bearings
- Using an appropriate lifting tool, take out the rotor without
knocking the winding.
- Remove the bearings (30) and (50) with an appropriate tool,
protecting the end of the shaft extension. Avoid knocking the
running surfaces of the shaft.
- Change the bearings in accordance with the instructions
described in the General information in section 6 (shrink-fitting
only).
IMPORTANT: Before undertaking any of these procedures, read
the section “CHECKS BEFORE REASSEMBLY”.
12.10.4 - Reassembly
- Mount the DE bearing (30) on the rotor shaft (take care not to
forget the inner bearing retainer (33)), and also the NDE bearing
(50) and the inner NDE bearing retainer (53).
- Insert the rotor in the stator taking care not to knock the winding.
- Don't forget to replace the preloading washers in their housing.
- Begin with the fixed bearing (see above). Fix a dowel pin in one
of the inner bearing retainer tapped holes so that the grease
inlet pipes fully correspond.
- End with the non-fixed bearing. Fix a dowel pin in one of the
inner bearing retainer tapped holes so that the grease inlet
pipes fully correspond.
- Lift the rotor slightly and fit the shields in place.
42
NDE
DE
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
FLSN 315 M to 355 LD
70
122
40
74
50
65
273
27
3
33
5
42
81
64
53
6
456
456B
40
7
12
13
2
270
406
406B
44
30
21
5
FLSN 315 M to 355 LD
Ref.
Description
Ref.
Description
Ref.
Description
2
Housing
33
Inner DE bearing retainer
81
Cable gland support plate
3
Rotor
40
Cover fixing screw
122
Stirrer (only from 315 M to 355 LD)
5
DE shield
42
DE grease nipple
270
DE shield fixing screw
6
NDE shield
44
Preloading (wavy) washer
273
NDE shield fixing screw
7
Fan
50
Non drive end bearing
406
DE grease valve cover plate
12
Lock washer
53
Inner NDE bearing retainer
406B Lipseal
13
Fan cover
64
NDE grease nipple
456
21
Shaft extension key
65
Extension for NDE grease nipple
456B Lipseal
27
Fan cover screw
70
Stator terminal box
30
DE bearing
74
Stator terminal box lid
NDE grease valve cover plate
43
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
12.11 - FLSN 355 LK to 450 motors
12.11.1 - Dismantling the NDE shield
- Remove the grease nipple extension (65).
- Remove the fixing screws (27) and then take off the cover (13).
There is a tapped hole into which you can screw a lifting ring to
make it easier to remove.
- Remove the fan screw and washer (10 -12) and the lock washer
(11).
- Take out the fan (7).
- Take out the fan key (not shown) and the moving part of the
grease valve (56).
- Remove the fixing screws from the inner NDE bearing retainer
(53).
- Remove the fixing screws (273) from the NDE shield.
- Using two levers, disengage the NDE shield (6). Screw a lifting
ring in place of one of the cover fixing screws. Turn the shield so
that the ring is at the top. Remove the shield with a lifting block
by sliding it along the shaft.
12.11.2 - Dismantling the DE shield
- Dismantle the DE shield without removing the rotor (3). To do
this:
- Take out the key (21).
- Heat the moving part of the DE grease valve (35). Unscrew and
remove it.
- Remove the fixing screws from the inner DE bearing retainer
(33).
- Remove the fixing screws (270) from the DE shield.
- Using two levers or a flexible hammer, disengage the DE shield
(5) taking care not to place it aslant.
- Remove the shield by sliding it along the shaft.
- Put the dismantled components to one side and recover the
moving part of the DE grease valve (35), which should be
replaced in its housing.
12.11.3 - Changing the antifriction bearings
- The operation can be performed without removing the rotor.
- Push back the inner bearing retainers (53) and (33) to make it
easier to insert the bearing extractor tool. Take out the bearings.
IMPORTANT: Before undertaking any of these procedures, read
the section “CHECKS BEFORE REASSEMBLY”.
12.11.4 - Reassembly
- Mount the DE bearing (30) and NDE bearing (50) on the rotor
shaft.
- Don't forget to replace the preloading washers (59) in their
housing.
- Start with the NDE shield (6). Fix a dowel pin in one of the inner
bearing retainer (53) tapped holes so that the grease inlet pipes
fully correspond.
- End with the DE shield (5). Fix a dowel pin in one of the inner
bearing retainer (33) tapped holes so that the grease inlet pipes
fully correspond.
- Engage the shield on the bearing. Turn it so that the grease
nipple is brought to the top.
- Slide it into position.
- Lift the rotor slightly and fit the shields onto the housing.
- Replace the shield fixing screws.
- Replace the cover fixing screws.
44
- Refit the moving part of the grease valve.
- Replace the fan (7) with its key.
- Replace the shaft extension screw with its washers (10) (11)
(12).
- Replace the cover.
- Replace the DE grease nipple extension (65).
- Coat the thread of the moving part of the DE grease valve (35),
with anti-vibration adhesive. Screw it tight.
- Lubricate the DE and NDE bearings.
Note: Removing the rotor if necessary
- Place 1 sling at each end of the rotor. Lift it with a lifting block
until it is no longer resting on the stator. Move it as far back as you
can. Put the rotor back down and replace the slings, then repeat
the operation as often as necessary.
- When you can no longer fix the DE sling (rotor too far engaged
in the stator), keep the NDE sling.
- Lift a little, engage a hollow bar on the shaft and use it as a lever
to compensate for the weight of the rotor.
- Remove the rotor.
FLSN 355 LK and 450
drive end roller bearings
FLSN 355 LK and 450
standard bearings
6
53
56
50
NDE
33
5
30
44
35
DE
6
53
56
50
NDE
33
5
30
35
DE
LEROY-SOMER
INSTALLATION AND MAINTENANCE
2727 en - 2010.11 / e
FLSN
Three-phase induction motors for atmospheres containing explosive gases and dust
FLSN 355 LK to 450
5
44
42
43
30
74
70
21
33
89
230
53
121
64
65
50
56
6
26
40
35
270
406
271
5
3
270
1
11
2
81
13
27
7
273
456
12
10
FLSN 355 LK to 450
Ref.
Description
Ref.
Description
Ref.
Description
1
Wound stator
27
Fan cover screw
65
Extension for NDE grease nipple
2
Housing
30
DE bearing
70
Stator terminal box
3
Rotor
33
Inner DE bearing retainer
74
Stator terminal box lid
5
DE shield
35
Moving part of DE grease valve
81
Cable gland support plate
6
NDE shield
40
Cover fixing screw
89
Connection - Terminal box
7
Fan
42
DE grease nipple
121
Stirrer
10
Turbine or fan screw
43
Extension for DE grease nipple
230
Auxiliary terminal box (355 LK to 450)
11
Lock washer (not shown)
44
DE preloading (wavy) washer
270
DE shield fixing screw
12
Lock washer
50
Non drive end bearing
271
NDE shield fixing nut
13
Fan cover
53
Inner NDE bearing retainer
273
NDE shield fixing screw
21
Shaft extension key
56
Moving part of NDE grease valve
406
DE grease valve cover plate
26
Nameplate
64
NDE grease nipple
456
NDE grease valve cover plate
45
(This page intentionally left blank)
3300 XL 8mm Proximity Transducer System
Bently Nevada™ Asset Condition Monitoring
Description
The 3300 XL 8 mm Proximity Transducer System consists of:
•
a 3300 XL 8 mm probe
•
a 3300 XL extension cable1
•
a 3300 XL Proximitor® Sensor2
The system provides an output voltage that is directly proportional to the
distance between the probe tip and the observed conductive surface. The
system can measure both static (position) and dynamic (vibration)
measurements, and is primarily used for vibration and position measurement
applications on fluid-film bearing machines, as well as for Keyphasor® reference
and speed measurement applications3.
The 3300 XL 8 mm system delivers the most advanced performance in our eddy
current proximity transducer systems. The standard 3300 XL 8 mm 5-metre
system also fully complies with the American Petroleum Institute’s (API) 670
Standard (4th Edition) for mechanical configuration, linear range, accuracy, and
temperature stability. All 3300 XL 8 mm proximity transducer systems provide
this level of performance while supporting complete interchangeability of probe,
extension cable, and Proximitor sensor without requiring individual component
matching or bench calibration.
Each 3300 XL 8 mm Transducer System component is backward-compatible and
interchangeable4 with other non-XL 3300 series 5 and 8 mm transducer system
components5. This compatibility includes the 3300 5 mm probe, which is used
when an 8 mm probe is too large for the available mounting space6,7.
Proximitor Sensor
The 3300 XL Proximitor Sensor incorporates numerous improvements over
previous designs. Its physical packaging allows you to use it in high-density DINrail installation. You can also mount the sensor in a traditional panel mount
configuration, where it shares an identical 4-hole mounting “footprint” with older
Proximitor sensor designs. The mounting base for either option provides
electrical isolation and eliminates the need for separate isolator plates. The 3300
XL Proximitor Sensor is highly immune to radio frequency interference, allowing
you to install it in fiberglass housings without adverse effects from nearby radio
frequency signals. The 3300 XL Proximitor Sensor’s improved RFI/EMI immunity
satisfies European CE mark approvals without requiring special shielded conduit
or metallic housings, resulting in lower installation costs and complexity.
The 3300 XL’s SpringLoc terminal strips require no special installation tools and
facilitate faster, more robust field wiring connections by eliminating screw-type
clamping mechanisms that can loosen.
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 1 of 31
Proximity Probe and Extension Cable
The 3300 XL probe and extension cable also reflect
improvements over previous designs. A patented
TipLoc™ molding method provides a more robust
bond between the probe tip and the probe body.
The probe’s cable is more securely attached as well,
incorporating a patented CableLoc™ design that
provides 330 N (75 lbf) pull strength between the
probe cable and probe tip.
You can also order 3300 XL 8 mm Probes and
Extension Cables with an optional FluidLoc® cable
option. This option prevents oil and other liquids
from leaking out of the machine through the cable’s
interior.
Notes:
1.
1-metre systems do not use an extension cable.
2.
Proximitor Sensors are supplied by default from the
factory calibrated to AISI 4140 steel. Calibration to
other target materials is available upon request.
3.
Consult Bently Nevada Applications Note,
Considerations when using Eddy Current Proximity
Probes for Overspeed Protection Applications, when
considering this transducer system for tachometer or
overspeed measurements.
4.
3300 XL 8 mm components are both electrically and
physically interchangeable with non-XL 3300 5 and 8
mm components. Although the packaging of the
3300 XL Proximitor Sensor differs from its
predecessor, it is designed to fit in the same 4-hole
mounting pattern when used with the 4-hole
mounting base, and will fit within the same mounting
space specifications (when minimum permissible
cable bend radius is observed).
5.
When XL and non-XL 3300-series 5 and 8 mm system
components are mixed, system performance is
limited to the specifications for the non-XL 3300 5 and
8 mm Transducer System.
6.
The 3300-series 5 mm probe (refer to Specifications
and Ordering Information p/n 141605-01) uses
smaller physical packaging, but does not permit
reduced side view clearances or tip-to-tip spacing
requirements compared to an 8 mm probe. It is used
when physical (not electrical) constraints preclude the
use of an 8 mm probe. When narrow side view
probes are required, use the 3300 NSv™ Proximity
Transducer System (refer to Specifications and
Ordering Information p/n 147385-01).
7.
8 mm probes provide a thicker encapsulation of the
probe coil in the molded PPS plastic probe tip. This
results in a more rugged probe. The larger diameter
of the probe body also provides a stronger, more
robust case. We recommend the use of 8 mm probes
when possible to provide optimal robustness against
physical abuse.
8.
Silicone tape is also provided with each 3300 XL
extension cable and can be used instead of connector
protectors. Silicone tape is not recommended in
applications where the probe-to-extension cable
connection will be exposed to turbine oil.
Connectors
The 3300 XL probe, extension cable, and Proximitor
sensor have corrosion-resistant, gold-plated
ClickLoc™ connectors. These connectors require
only finger-tight torque (the connectors will "click"
when tight), and the specially-engineered locking
mechanism prevents the connectors from loosening.
These connectors require no special tools for
installation or removal.
You can order the 3300 XL 8 mm probes and
extension cables with connector protectors already
installed. We can also supply connector protectors
separately for field installation (such as when an
application must run the cable through restrictive
conduit). We recommend connector protectors for
all installations to provide increased environmental
protection8.
Extended Temperature Range Applications
An extended temperature range (ETR) probe and ETR
extension cable are available for applications in
which either the probe lead or extension cable may
exceed the 177 °C (350 °F) temperature
specification. The ETR probe has an extended
temperature rating for up to 260 °C (500 °F) for the
probe lead and connector, although the probe tip
must remain below 177 °C (350 °F). The ETR
extension cable rating is also up to 260 °C (500 °F).
Both the ETR probe and cable are compatible with
standard temperature probes and cables., so that,
for example, you can utilize an ETR probe with the
330130 extension cable. The ETR system uses the
standard 3300 XL Proximitor Sensor. Note that when
you use any ETR component as part of your system,
the system accuracy is limited to the accuracy of the
ETR system.
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 2 of 31
Specifications
Unless otherwise noted, the following specifications
are for a 3300 XL 8 mm Proximitor Sensor, extension
cable and 8 mm probe between +18 °C and +27 °C
(+64 °F to +80 °F), with a -24 Vdc power supply, a 10
kΩ load, an AISI 4140 steel target, and a probe
gapped at 1.27 mm (50 mils). Performance
characteristics apply to systems that consist solely
of 3300 XL 8 mm components. The system accuracy
and interchangeability specifications do not apply to
transducer systems calibrated to any target other
than our AISI 4140 steel target.
Electrical
Proximitor
Sensor Input
Accepts one noncontacting 3300series 5 mm, 3300 8 mm or 3300
XL 8 mm Proximity Probe and
Extension Cable.
Power
Requires -17.5 Vdc to -26 Vdc
without barriers at 12 mA
maximum consumption, -23 Vdc
to -26 Vdc with barriers.
Operation at a more positive
voltage than -23.5 Vdc can result
in reduced linear range.
Supply
Sensitivity
Less than 2 mV change in output
voltage per volt change in input
voltage.
Output
Resistance
50 Ω
Nominal Probe
DC Resistance
See Table 1.
Table 1: Resistance from Center Conductor to
Outer Conductor (RPROBE)
Probe Length
RPROBE (Ω)
0.5
7.45 ± 0.50
1.0
7.59 ± 0.50
1.5
7.73 ± 0.50
Probe Length
RPROBE (Ω)
2.0
7.88 ± 0.50
5.0
8.73 ± 0.70
9.0
9.87 ± 0.90
Nominal
Extension Cable
DC Resistance
See Table 2 and Table 3.
Table 2: Resistance from Center Conductor to
Center Conductor (RCORE)
Length of Extension
Cable (m)
RCORE (Ω)
3.0
0.66 ± 0.10
3.5
0.77 ± 0.12
4.0
0.88 ± 0.13
4.5
0.99 ± 0.15
7.0
1.54 ± 0.23
7.5
1.65 ± 0.25
8.0
1.76 ± 0.26
8.5
1.87 ± 0.28
Table 3: Resistance from Outer Conductor to Outer
Conductor (RJACKET)
Length of Extension
Cable (m)
RJACKET (Ω)
3.0
0.20 ± 0.04
3.5
0.23 ± 0.05
4.0
0.26 ± 0.05
4.5
0.30 ± 0.06
7.0
0.46 ± 0.09
7.5
0.49 ± 0.10
8.0
0.53 ± 0.11
8.5
0.56 ± 0.11
Extension Cable
Capacitance
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 3 of 31
69.9 pF/m (21.3 pF/ft) typical
Field Wiring
0.2 to 1.5 mm2 (16 to 24 AWG) .
Recommend using 3-conductor
shielded triax cable and tinned
field wiring. Maximum length of
305 metres (1,000 feet) between
the 3300 XL Proximitor Sensor
and the monitor. See the
frequency response graphs in
Figure 10 through Figure 13
(pages 24 and 25) for signal rolloff
at high frequencies when using
longer field wiring lengths.
5- and 9-Metre
Systems
7.87 V/mm (200 mV/mil) ±6.5%
including interchangeability error
when measured in increments of
0.25 mm (10 mils) over the 80 mil
linear range from 0 °C to +45 °C
(+32 °F to +113 °F).
Deviation from best fit straight line (DSL)
Standard 5- or
1-metre System
Less than ±0.025mm (±1 mil) with
components at 0 °C to +45 °C
(+32 °F to +113 °F).
Linear Range
2 mm (80 mils). Linear range
begins at approximately 0.25 mm
(10 mils) from target and is from
0.25 to 2.3 mm (10 to 90 mils)
(approximately –1 to –17 Vdc).
Recommended
Gap Setting
1.27 mm (50 mils)
Incremental
Scale Factor
(ISF)
Less than ±0.038mm (±1.5 mil)
with components at 0 °C to +45
°C (+32 °F to +113 °F).
Extended
Temperature
Range 5 and
9-metre
Systems
Less than ±0.038mm (±1.5 mil)
with components at 0 °C to +45
°C (+32 °F to +113 °F).
Standard 5- or
1-metre System
7.87 V/mm (200 mV/mil) ±5%
including interchangeability error
when measured in increments of
0.25 mm (10 mils) over the 80 mil
linear range from 0 °C to +45 °C
(+32 °F to +113 °F).
Standard
9-metre System
7.87 V/mm (200 mV/mil) ±6.5%
including interchangeability error
when measured in increments of
0.25 mm (10 mils) over the 80 mil
linear range from 0 °C to +45 °C
(+32 °F to +113 °F).
Extended
Temperature
Range (ETR) for
Standard
9-metre System
Standard 5- or
1-metre System
Performance
Over Extended
Temperatures
Over a probe temperature range
of –35 °C to +120 °C (-31 °F to
+248 °F) with the Proximitor
sensor and extension cable
between 0 °C to +45°C (+32 °F to
+113 °F), the ISF remains within
±10% of 7.87 V/mm (200 mV/mil)
and the DSL remains within
±0.076 mm (±3 mils).
Over a Proximitor sensor and
extension cable temperature
range of –35 °C to +65 °C (-31 °F
to +149 °F) with the probe
between 0 °C to +45 °C (+32 °F to
+113 °F), the ISF remains within
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 4 of 31
±10% of 7.87 V/mm (200 mV/mil)
and the DSL remains within
±0.076 mm (±3 mils).
Standard
9-metre System
Performance
Over Extended
Temperatures
15.2 mm (0.6 in) diameter (flat
target)
Shaft Diameter
Minimum
50.8 mm (2 in)
Recommended
Minimum
Over a probe temperature range
of –35 °C to +120 °C (-31 °F to
+248 °F) with the Proximitor
Sensor and extension cable
between 0 °C to +45°C (+32 °F to
+113 °F), the ISF remains within
±18% of 7.87 V/mm (200 mV/mil)
and the DSL remains within
±0.152 mm (±6 mils).
76.2 mm (3 in)
When gapped at the center of the
linear range, the interaction
between two separate transducer
systems (cross-talk) will be less
than 50 mV on shaft diameters of
at least 50 mm (2 in) or greater.
You should take care to maintain
minimum separation of
transducer tips, generally at least
40 mm (1.6 in) for axial position
measurements or 38 mm (1.5 in)
for radial vibration measurements
to limit cross-talk to 50 mV or less.
Radial vibration or position
measurements on shaft
diameters smaller than 76.2 mm
(3 in) will generally change the
scale factor. Consult
Performance Specification
159484 for additional information.
Over a Proximitor Sensor and
extension cable temperature
range of –35 °C to +65 °C (-31 °F
to +149 °F) with the probe
between 0 °C to +45 °C (+32 °F to
+113 °F), the ISF remains within
±18% of 7.87 V/mm (200 mV/mil)
and the DSL remains within
±0.152 mm (±6 mils).
Extended
Temperature
Range System
Performance
Over Extended
Temperatures
Effects of 60 Hz
Magnetic Fields
up to 300 Gauss
Over a probe and extension cable
temperature range of –35 °C to
+260 °C (-31 °F to +500 °F) with
the Proximitor Sensor between 0
°C to +45°C (+32 °F to +113 °F),
the ISF remains within ±18% of
7.87 V/mm (200 mV/mil) and the
DSL remains within ±0.152 mm
(±6 mils).
Frequency
Response
0 to 10 kHz: +0, -3 dB, with up to
305 metres (1000 feet) of field
wiring.
Minimum
Target Size
See Table 4.
Table 4: Output Voltage in Mil pp/Gauss
Gap
5- or
1-metre
Proximitor
Sensor
9-metre
Proximitor
Sensor
Probe
Ext.
Cable
10 mil
0.0119
0.0247
0.0004
0.0004
50 mil
0.0131
0.0323
0.0014
0.0014
90 mil
0.0133
0.0348
0.0045
0.0045
Electrical Classification
Complies with the European CE
mark.
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 5 of 31
Hazardous Area Approvals
Ui = -28V
Ci= 5.7nF
Note:
Ii = 140mA
Li = 0.85mH
Multiple approvals for hazardous areas certified by
Canadian Standards Association (CSA/NRTL/C) in North
Pi = 0.84W
America and by Baseefa (2001) in Europe.
Load
Parameters
North America
Ex ia IIC T4/T5; Class I Zone 0 or
Class 1 Division 1; Groups A, B, C,
and D, when installed with
intrinsically safe zener barriers
per drawing 141092 or when
installed with galvanic isolators.
Certificate number 1109248(LR
26744-222)
Ex nA IIC T4/T5 Class I Zone 2 or
Class I, Division 2, Groups A, B, C,
and D when installed without
barriers per drawing 140979.
T5 @ Ta = -35 °C to +85 °C.
T4 @ Ta= -51 °C to +100 °C.
Certificate number 1109248(LR
26744-222)
The capacitance and either the
inductance or the inductance to
resistance (L/R) ratio of the load
connected to the probe coaxial
terminal, must not exceed the
values in Table 5.
Table 5: Load Parameters
Group
Capacitance
(µF)
Inductance
(mH)
L/R Ratio
(µH/Ω)
IIC
0.077
0.99
35
IIB
0.644
7.41
142
IIA
2.144
15.6
295
Europe
II 1 G EEx ia IIC T4/T5. EC
certificate number
BAS99ATEX1101, when installed
per drawing 141092.
II 3 G EEx nAII T4/T5. EC
certificate number
BAS99ATEX3100U,when installed
per drawing 140979
T5 @ Ta= -35 °C to +85 °C
T4 @ Ta= -51 °C to +100 °C.
The Proximitor sensor installation
must minimize the risk of impact
or friction with other metallic
surfaces.
3300 XL
Proximitor
Sensor, nA
IECEx BAS04.0057X
AEx nA II T4 / T5 (-51ºC ≤ Ta ≤
+100ºC / -35ºC ≤ Ta ≤ +85ºC)
Installation must provide the
terminals with a level of
protection of at least IP54.
IEC Ex
3300 XL
Proximitor
Sensor, ia
Ui = -28V
IECEx BAS04.0055X
Ex ia IIC T4 / T5 (-51ºC ≤ Ta ≤
+100ºC / -35ºC ≤ Ta ≤ +85ºC)
Terminal Block
Connections
Ui= -28V
Ci = 0
Ii= 140mA
Li =10µH
3300 XL 8mm
Eddy Current
Probe, ia
IECEx BAS04.0056
AEx ia IIC Temperature
Classification per Table 6.
Pi= 0.84W
Coaxial
Connection
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 6 of 31
Table 6: Probe Ambient Temperature for
Temperature Classifications
Temperature
Classification
Ambient Temperature
(Probe Only)
T1
-51ºC to +232ºC
T2
-51ºC to +177ºC
T3
-51ºC to +120ºC
T4
-51ºC to +80ºC
T5
-51ºC to +40ºC
Ui = -28V
Ci = 1.5nF
Ii = 140mA
Li = 200µH
Extended
Temperature
Range cable
75Ω triaxial, perfluoroalkoxy (PFA)
insulated probe cable in the
following total probe lengths: 0.5,
1, 1.5, 2, 5, or 9 metres.
Extension Cable
Material
75Ωtriaxial, fluoroethylene
propylene (FEP) insulated.
Extended
Temperature
Range (ETR)
Extension Cable
Material
Pi =0.84W
3300 XL 8mm
Eddy Current
Probe, nA
75Ω triaxial, perfluoroalkoxy (PFA)
insulated.
Proximitor
Sensor Material
IECEx BAS04.0058X
Ex nA II Temperature
Classification per Table 6.
Must be supplied from a voltage
limited source.
EEx nA for Zone 2, Group IIC, EC
certificate number
BAS99ATEX3100U.
A308 aluminum
System Length
5 or 9 metres including extension
cable, or 1 metre
Standard Probe
and Extension
Cable Armor
(optional)
Mechanical
Flexible AISI 302 or 304 SST with
FEP outer jacket.
Probe Tip
Material
Polyphenylene sulfide (PPS).
Probe Case
Material
AISI 303 or 304 stainless steel
(SST).
Probe Cable
Specifications
Standard cable
75Ω triaxial, fluoroethylene
propylene (FEP) insulated probe
cable in the following total probe
lengths: 0.5, 1, 1.5, 2, 5, or 9
metres.
Extended
Temperature
Range Probe
and Extension
Cable Armor
(optional)
Flexible AISI 302 or 304 SST with
PFA outer jacket.
Tensile Strength
(Maximum
Rated)
330 N (75 lbf) probe case to probe
lead. 270 N (60 lbf) at probe lead
to extension cable connectors.
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 7 of 31
0.7 kg (1.5 lbm)
Connector
Material
Probe
Gold-plated brass or gold-plated
beryllium copper.
323 g (11.38 oz)
Extension Cable
Probe Case
Torque
34 g/m (0.4 oz/ft)
See Table 7.
Table 7: Probe Case Torque
103 g/m (1.5 oz/ft)
Maximum
Rated
Probe Type
Standard
forward-mounted
probes
Armored
Extension Cable
Recommended
33.9 N•m
11.2 N•m
(300 in•lbf)
(100 in•lbf)
22.6 N•m
7.5 N•m
(200 in•lbf)
(66 in•lbf)
Proximitor
Sensor
246 g (8.7 oz)
Environmental Limits
Probe Temperature Range
Standard
forward-mount
probes - first
three threads
Reverse-mount
probes
22.6 N•m
7.5 N•m
(200 in•lbf)
(66 in•lbf)
Connector-to-connector torque
Operating and
Storage
Temperature
Standard Probe
-51 °C to +177 °C (-60 °F to +350
°F)
Extended
Temperature
Range Probe
Recommended
Torque
-51 °C to +177 °C (-60 °F to +350
°F) for the probe tip; -51 °C to
+260 °C (-60 °F to +500 °F) for the
probe cable and connector.
See Table 8.
Table 8: Recommended Connector-to-Connector
Torque
Connector Type
Tightening Instructions
Two 3300 XL gold
"click" type connectors
Finger tight
One non-XL stainless
steel connector and
one 3300 XL connector
Finger tight plus 1/8 turn
using pliers
Note: Exposing the probe to
temperatures below –34 °C (-30 °F)
may cause premature failure of
the pressure seal.
Extension Cable Temperature Range
Operating and
Storage
Temperature:
Standard Cable
Maximum
Torque
-51 °C to +177 °C (-60 °F to +350
°F)
0.565 N•m (5 in•lbf)
Minimum Bend
Radius
25.4 mm (1.0 in)
Total System
Mass (Typical)
Extended
Temperature
Range Cable
-51 °C to +260 °C (-60 °F to +500
°F)
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 8 of 31
Components or procedures
described in one or more of the
following patents apply to this
product: 5,016,343; 5,126,664;
5,351,588; and 5,685,884.
Proximitor
Sensor
Temperature
Range
Operating
Temperature
-51 °C to +100 °C (-60 °F to +212
°F)
Storage
Temperature
Ordering Information
3300 XL 8 mm Proximity Probes:
330101 3300 XL 8 mm Probe, 3/8-24 UNF thread,
without armor3
-51 °C to +105 °C (-60 °F to +221
°F)
Relative
Humidity
330102 3300 XL 8 mm Probe, 3/8-24 UNF thread, with
armor3
Part Number-AXX-BXX-CXX-DXX-EXX
Less than a 3% change in
Average Scale Factor (ASF) when
tested in 93% humidity in
accordance with IEC standard
68-2-3 for up to 56 days.
A:
Note: Unthreaded length must be at least
0.8 inches less than the case length.
Probe Pressure
3300 XL 8 mm probes are
designed to seal differential
pressure between the probe tip
and case. The probe sealing
material consists of a Viton®
O-ring. Probes are not pressure
tested prior to shipment. Contact
our custom design department if
you require a test of the pressure
seal for your application.
Note: It is the responsibility of the customer or user to ensure
that all liquids and gases are contained and safely
controlled should leakage occur from a proximity probe.
In addition, solutions with high or low pH values may
erode the tip assembly of the probe causing media
leakage into surrounding areas. Bently Nevada, LLC will
not be held responsible for any damages resulting from
leaking 3300 XL 8 mm proximity probes. In addition, 3300
XL 8 mm proximity probes will not be replaced under the
service plan due to probe leakage.
Patents:
5,016,343;
5,126,664;
5,351,388, and
5,685,884.
Unthreaded Length Option
B:
C:
Order in increments of 0.1 in
Length configurations:
Maximum unthreaded length: 8.8 in
Minimum unthreaded length: 0.0 in
Example: 0 4 = 0.4 in
Overall Case Length Option
Order in increments of 0.1 in
Threaded length configurations:
Maximum case length:
9.6 in
Minimum case length:
0.8 in
Example: 2 4 = 2.4 in
Total Length Option
05
0.5 metre (1.6 feet)
10
1.0 metre (3.3 feet)
15
1.5 metre (4.9 feet)
20
2.0 metres (6.6 feet)
50
5.0 metres (16.4 feet)1
90
9.0 metres (29.5 feet)
D: Connector and Cable-Type Option
01
Miniature coaxial ClickLoc
connector with connector
protector, standard cable
02
Miniature coaxial ClickLoc
connector, standard cable
11
Miniature coaxial ClickLoc
connector with connector
protector, FluidLoc cable
12
Miniature coaxial ClickLoc
connector, FluidLoc cable
E: Agency Approval Option
00
Not required
05
Multiple Approvals
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 9 of 31
3300 XL 8 mm Proximity Probes, Metric:
330103 3300 XL 8 mm Probe, M10 x 1 thread, without
armor3
330104 3300 XL 8 mm Probe, M10 x 1 thread, with
armor3
20
50
90
D: Connector Option
02
12
Part Number-AXX-BXX-CXX-DXX-EXX
A:
Unthreaded Length Option
B:
C:
D:
E:
3300 XL 8 mm Reverse Mount Probes
330105-02-12-CXX-DXX-EXX, 3/8-24 UNF threads3
330106-05-30-CXX-DXX-EXX, M10 x 1 threads3
Option Descriptions
C:
Total Length Option
05
10
15
0.5 metre (1.6 feet)
1.0 metre (3.3 feet)
1.5 metre (4.9 feet)
Miniature ClickLoc coaxial
connector
Miniature ClickLoc coaxial
connector, FluidLoc cable
Note: The FluidLoc cable options –10 and
–12 are not necessary on the vast majority
of 330105 and 330106 installations due to
the presence of the probe sleeve. Consider
carefully the application before ordering
the FluidLoc cable options
Note: Unthreaded length must be at least
20 mm less than the case length.
Order in increments of 10 mm.
Length configuration:
Maximum unthreaded length: 230
mm
Minimum unthreaded length: 0 mm
Example: 0 6 = 60 mm
Overall Case Length Option
Order in increments of 10 mm.
Metric thread configurations:
Maximum length: 250 mm
Minimum length: 20 mm
Example: 0 6 = 60 mm
Total Length Option
05
0.5 metre (1.6 feet)
10
1.0 metre (3.3 feet)
15
1.5 metres (4.9 feet)
20
2.0 metres (6.6 feet)
50
5.0 metres (16.4 feet) 1
90
9.0 metres (29.5 feet)
Connector and Cable-Type Option
01
Miniature coaxial ClickLoc
connector with connector
protector, standard cable
02
Miniature coaxial ClickLoc
connector, standard cable
11
Miniature coaxial ClickLoc
connector with connector
protector, FluidLoc cable
12
Miniature coaxial ClickLoc
connector, FluidLoc cable
Agency Approval Option
00
Not required
05
Multiple Approvals
2.0 metres (6.6 feet)
5.0 metres (16.4 feet) 1
9.0 metres (29.5 feet)
. E: Agency Approval Option
00
Not required
05
Multiple Approvals
3300 XL 8 mm Proximity Probes, Smooth Case:
330140 3300 XL 8 mm Probe without armor2
330141 3300 XL 8 mm Probe with armor2
Part Number-AXX-BXX-CXX-DXX
Option Descriptions
A:
Overall Case Length Option
Order in increments of 0.1 in
Length configurations:
Maximum length: 9.6 in
Minimum length: 0.8 in
Example: 2 4 = 2.4 in
B: Total Length Option
05
0.5 metre (1.6 feet)
10
1.0 metre (3.3 feet)
15
1.5 metres (4.9 feet)
20
2.0 metres (6.6 feet)
50
5.0 metres (16.4 feet) 1
90
9.0 metres (29.5 feet)
C: Connector and Cable-Type Option
01
Miniature coaxial ClickLoc
connector with connector
protector, standard cable
02
Miniature coaxial ClickLoc
connector, standard cable
11
Miniature coaxial ClickLoc
connector with connector
protector, FluidLoc cable
12
Miniature coaxial ClickLoc
connector, FluidLoc cable
D: Agency Approval Option
00
Not required
05
Multiple Approvals
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 10 of 31
3300 XL 8 mm Extended Temperature Range
(ETR) Proximity Probes:
330191 3300 XL 8 mm ETR Probe, 3/8-24 UNF thread,
without armor
330192 3300 XL 8 mm ETR Probe, 3/8-24 UNF thread,
with armor
Part Number-AXX-BXX-CXX-DXX
A:
Unthreaded Length Option
Note: Unthreaded length must be at least
0.8 inches less than the case length.
Order in increments of 0.1 in
Length configurations:
Maximum unthreaded length: 8.8 in
Minimum unthreaded length: 0.0 in
Example: 1 5 = 1.5 in
B: Overall Case Length Option
Order in increments of 0.5 in
Threaded length configurations:
Maximum case length: 9.6 in
Minimum case length: 0.8 in
Example: 2 5 = 2.5 in
C: Total Length Option
05
0.5 metre (1.6 feet)
10
1.0 metre (3.3 feet)
15
1.5 metre (4.9 feet)
20
2.0 metres (6.6 feet)
50
5.0 metres (16.4 feet)1
90
9.0 metres (29.5 feet)
D: Agency Approval Option
00
Not required
05
Multiple Approvals
Maximum length: 250 mm
Minimum length: 20 mm
Example: 0 6 = 60 mm
C: Total Length Option
05
0.5 metre (1.6 feet)
10
1.0 metre (3.3 feet)
15
1.5 metres (4.9 feet)
20
2.0 metres (6.6 feet)
50
5.0 metres (16.4 feet) 1
90
9.0 metres (29.5 feet)
D: Agency Approval Option
00
Not required
05
Multiple Approvals
3300 XL 8 mm Extended Temperature Range
(ETR) Reverse Mount Probes
330195-02-12-CXX-DXX, 3/8-24 UNF threads
330196-05-30-CXX-DXX, M10 x 1 threads
C:
Total Length Option
05
0.5 metre (1.6 feet)
10
1.0 metre (3.3 feet)
15
1.5 metre (4.9 feet)
20
2.0 metres (6.6 feet)
50
5.0 metres (16.4 feet) 1
90
9.0 metres (29.5 feet)
D: Agency Approval Option
00
Not required
05
Multiple Approvals
3300 XL 8 mm Extended Temperature Range
(ETR) Proximity Probes, Smooth Case:
330197 3300 XL 8 mm Probe without armor2
3300 XL 8 mm Extended Temperature Range
(ETR) Proximity Probes, Metric:
330198 3300 XL 8 mm Probe with armor2
330193 3300 XL 8 mm Probe, M10 x 1 thread, without
armor
A:
Part Number-AXX-BXX-CXX
330194 3300 XL 8 mm Probe, M10 x 1 thread, with armor
Part Number-AXX-BXX-CXX-DXX
A:
Unthreaded Length Option
Note: Unthreaded length must be at
least 20 mm less than the case
length.
B:
Order in increments of 10 mm.
Length configuration:
Maximum unthreaded length: 230
mm
Minimum unthreaded length: 0 mm
Example: 0 6 = 60 mm
Overall Case Length Option
Order in increments of 10 mm.
Metric thread configurations:
B:
C:
Overall Case Length Option
Order in increments of 0.5 in
Length configurations:
Maximum length: 9.5 in
Minimum length: 1.0 in
Example: 3 5 = 3.5 in
Total Length Option
05
0.5 metre (1.6 feet)
10
1.0 metre (3.3 feet)
15
1.5 metres (4.9 feet)
20
2.0 metres (6.6 feet)
50
5.0 metres (16.4 feet) 1
90
9.0 metres (29.5 feet)
Agency Approval Option
00
Not required
05
Multiple Approvals
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 11 of 31
00
05
3300 XL Proximitor Sensor
330180-AXX-BXX
A:
B:
Total Length and Mounting Option
10
1.0 metre (3.3 feet) system
length, panel mount
11
1.0 metre (3.3 feet) system
length, DIN mount
12
1.0 metre (3.3 feet) system
length, no mounting hardware
50
5.0 metre (16.4 feet) system
length, panel mount
51
5.0 metre (16.4 feet) system
length, DIN mount
52
5.0 metre (16.4 feet) system
length, no mounting hardware
90
9.0 metres (29.5 feet) system
length, panel mount
91
9.0 metres (29.5 feet) system
length, DIN mount
92
9.0 metres (29.5 feet) system
length, no mounting hardware
Agency Approval Option
00
Not required
05
Multiple approvals
3300 XL Extension Cable
3300 XL Extended Temperature Range (ETR)
Extension Cable
330190-AXXX-BXX-CXX
Note:
Make sure that the extension cable length and the probe
length, when added together, equal the Proximitor Sensor
total length.
A:
Cable Length Option
030
035
040
045
070
075
080
085
B:
Cable Option
C:
Accessories
Note:
141078-01
A:
B:
C:
Cable Length Option
0 3 0 3.0 metres (9.8 feet)
0 3 5 3.5 metres (11.5 feet)
0 4 0 4.0 metres (13.1 feet)
0 4 5 4.5 metres (14.8 feet)
0 7 0 7.0 metres (22.9 feet)
0 7 5 7.5 metres (24.6 feet)
0 8 0 8.0 metres (26.2 feet)
0 8 5 8.5 metres (27.9 feet)
Connector Protector and Cable Option
00
Standard cable
01
Armored cable
02
Standard cable with connector
protectors
03
Armored cable with connector
protectors
10
FluidLoc cable
11
Armored FluidLoc cable
12
FluidLoc cable with connector
protectors
13
Armored FluidLoc cable with
connector protectors
Agency Approval Option
3.0 metres (9.8 feet)
3.5 metres (11.5 feet)
4.0 metres (13.1 feet)
4.5 metres (14.8 feet)
7.0 metres (22.9 feet)
7.5 metres (24.6 feet)
8.0 metres (26.2 feet)
8.5 metres (27.9 feet)
00
Standard cable
01
Armored cable
Agency Approval Option
00
Not required
05
Multiple Approvals
330130-AXXX-BXX-CXX
Make sure that the extension cable length and the probe
length, when added together, equal the Proximitor Sensor
total length.
Not required
Multiple Approvals
Manual.
159484
Performance Specification, 3300
XL Proximity Transducer System.
162735
Performance Specification, 3300
XL ETR probes and extension
cables.
02120015
Bulk field wire. 1.0 mm2 (18
AWG), 3 conductor, twisted,
shielded cable with drain wire.
Specify length in feet.
Aluminum probe clamp bracket2
137491-AXX
A:
Mounting screw option
01
10-24 UNC-2A mounting
screws
02
M5 x 0.8-6g mounting screws
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 12 of 31
The aluminum clamp bracket is an unthreaded
mounting bracket designed for use with the smooth
case probes (330140, 330141, 330197 and 330198).
After gapping the probe, tighten the clamp bracket
by tightening the screws. The mounting screws have
pre-drilled holes for safety wire.
pin holes in the terminal strip
without removing the field wiring.
04310310
3300 XL Proximitor Sensor
panel-mount screws. Package
includes 4 6-32 UNC thread
forming mounting screws.
(Supplied standard with
Proximitor housings [3300 XL
panel-mount option]).
Aluminum probe threaded mounting bracket
137492-AXX
A:
Thread size
01
3/8-24
04
M10 x 1
The aluminum probe threaded mounting bracket is
the standard mounting bracket for most 3300 and
3300 XL probe installations. The -01 option includes
two 10-24 UNC-2A mounting screws. The -04 option
includes two M5 x 0.8-6g (?) mounting screws. The
mounting screws have pre-drilled holes for safety
wire.
Phenolic threaded probe mounting bracket
27474-AXX
A:
Thread size
01
3/8-24
04
M10 x 1
We recommend the phenolic threaded mounting
bracket if your application requires additional
electric isolation from the mounting location (as in
some generator and electrical motor bearing
locations). The -01 option includes two 10-24 UNC2A mounting screws. The -04 option includes two M5
x 0.8-6g mounting screws. The mounting screws
have pre-drilled holes for safety wire.
03200006
Silicone self-fusing tape. A
9.1-metre (10-yard) roll of silicone
tape to protect connectors. This
tape is easy to install and
provides excellent electrical
isolation and protection from the
environment. We do not
recommend using this tape inside
the casing of the machine.
40113-02
Connector Protector Kit.
Connector Protector Kit for 3300
XL 8 mm probes and extension
cables, including connector
protectors and installation tools.
136536-01
Connector protector adapter.
This allows you to use connector
protector installation tools
manufactured prior to 1998 with
75Ω ClickLoc connectors.
138492-01
Replacement panel-mount
mounting pad.
40180-02
Connector protectors. Package
contains 10 pairs of connector
protectors for 3300 XL 8 mm
probes and 3300 XL 5 and 8 mm
extension cables.
138493-01
Replacement DIN-mount
mounting pad.
148722-01
3300 XL test plug. The 3300 XL
Test Plug contains 3 small test
pins attached to 3 color-coded 1metre wires, each terminated in a
banana plug. The 3-pin adapter
plugs into the test pin holes on
3300 XL-style Proximitor sensors.
You can use this test plug to
check the performance of the
Proximitor sensor from the test
03839410
75Ω triaxial male connector
protector. Male connector
protectors instal onto the
extension cable and attach to the
female connector protector on
the probe, providing
environmental protection of
connectors.
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 13 of 31
Connector Crimp Tool Kit.
Includes 1 set of multiconnector
inserts and connector installation
instructions. Compatible only
with 330153 connector kits or
with probes shipped in 2003 or
later with ClickLoc connectors
uninstalled. Supplied with
carrying case.
03839420
75Ω triaxial female connector
protector. Female connector
protectors install onto the probe
lead and attach to the male
connector protector on the
extension cable, providing
environmental protection of
connectors. You can also place
the protector on the extension
cable to slide over the connection
to the Proximitor sensor to
protect the sensor from the
environment.
04301007
3/8-24 probe lock nut with
safety wire holes. Single probe
lock nut with 2 holes drilled
through the nut in order to secure
the lock nut in place with safety
wire.
04301008
M10 x 1 probe lock nut with
safety wire holes. Single probe
lock nut with 2 holes drilled
through the nut in order to secure
the lock nut in place with safety
wire.
330153-01
3300 XL connector kit. Used on
3300 XL 8 mm probes and
extension cables. Contains 1 pair
each of male and female ClickLoc
connectors, 2 color-coded
sleeves, 2 pieces of slit FEP tubing,
and 1 strip of silicone tape.
Notes:
1.
2.
3.
5-metre probes are designed for use with
the 5-metre Proximitor sensor only.
Mounting clamps must be ordered
separately for 330140, 330141, 330197, and
330198.
For a shorter delivery time, order commonly
stocked probes. Currently, stocked probes
consist of the following part numbers:
330101-00-08-05-02-00, 330101-00-08-05-02-05,
330101-00-08-10-02-00, 330101-00-08-10-02-05,
330101-00-12-10-02-00, 330101-00-12-10-02-05,
330101-00-16-10-02-00, 330101-00-16-10-02-05,
330101-00-20-05-02-00, 330101-00-20-10-02-00,
330101-00-20-10-02-05, 330101-00-30-10-02-00,
330101-00-30-10-02-05, 330101-00-40-05-02-00,
330101-00-40-10-02-00, 330101-00-40-10-02-05,
330101-00-60-10-02-00, 330101-00-60-10-02-05,
330102-00-20-10-02-00, 330103-00-02-10-02-05,
330103-00-03-10-02-05, 330103-00-04-10-02-00,
330103-00-04-50-02-00, 330103-00-05-10-02-00,
330103-00-06-10-02-00, 330104-00-06-10-02-00,
330104-01-05-50-02-00, 330105-02-12-05-02-00,
330105-02-12-05-02-05, 330105-02-12-10-02-00,
330105-02-12-10-02-05, 330106-05-30-05-02-00,
330106-05-30-05-02-05, 330106-05-30-10-02-00
and 330106-05-30-10-02-05.
163356
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 14 of 31
Graphs and Figures
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
2.25
2.50
4
0.10
2
0.05
0
0.00
-2
-0.05
-4
-0.10
DSL Error (mm)
DSL Error (mils)
Referenced to
7.87 V/mm (200
mV/mil)
Gap (m m )0.00
ISF Error (%)
Referenced to 7.87
V/mm (200 mV/mil)
10
5
0
-5
-10
-24
-22
-20
Output (Volts)
-18
-16
-14
-12
-10
-8
-6
-4
-2
0
0
10
20
30
40
50
60
70
80
90
100
Gap (m ils)
5m @ 25 °C (77 °F)
5m @ 45 °C (113 °F)
5m @ 0 °C (32 °F)
Figure 1: Typical 3300 XL 8 mm 5m or 1m System over API 670 Testing Range
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 15 of 31
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
2.25
2.50
6
0.15
4
0.10
2
0.05
0
0.00
-2
-0.05
-4
-0.10
-6
-0.15
DSL Error (mm)
DSL Error (mils)
Referenced to
7.87 V/mm (200
mV/mil)
Gap (m m ) 0.00
ISF Error (%)
Referenced to 7.87
V/mm (200 mV/mil)
10
5
0
-5
-10
-24
-22
-20
Output (Volts)
-18
-16
-14
-12
-10
-8
-6
-4
-2
0
0
10
20
30
40
50
60
70
80
90
100
Gap (m ils)
9m @ 25 °C (77 °F)
9m @ 45 °C (113 °F)
9m @ 0 °C (32 °F)
Figure 2: Typical 3300 XL 8 mm 9m System over API 670 Testing Range
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 16 of 31
0.00
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
2.25
2.50
0.15
4
0.10
2
0.05
0
0.00
-2
-0.05
-4
-0.10
-6
-0.15
DSL Error (mils)
Referenced to
7.87 V/mm (200
mV/mil)
6
DSL Error (mm)
Gap (m m )
ISF Error (%)
Referenced to 7.87
V/mm (200 mV/mil)
10
5
0
-5
-10
-24
-22
-20
Output (Volts)
-18
-16
-14
-12
-10
-8
-6
-4
-2
0
0
10
20
30
40
50
60
70
80
90
100
Gap (m ils)
1m P ro be @ 25 °C (77 °F)
1m P ro be @ 120 °C (248 °F)
1m P ro be @ -35 °C (-31°F)
Figure 3: Typical 3300 XL 8mm Probe over API 670 Operating Range
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 17 of 31
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
2.25
2.50
0.15
4
0.10
2
0.05
0
0.00
-2
-0.05
-4
-0.10
-6
-0.15
DSL Error (mils)
Referenced to
7.87 V/mm (200
mV/mil)
6
DSL Error (mm)
Gap (m m ) 0.00
ISF Error (%)
Referenced to 7.87
V/mm (200 mV/mil)
10
5
0
-5
-10
-24
-22
-20
Output (Volts)
-18
-16
-14
-12
-10
-8
-6
-4
-2
0
0
10
20
30
40
50
60
70
80
90
100
Gap (m ils)
TC=25 °C (77 °F)
Tc=-34 °C (-30 °F)
Tc=-51°C (-60 °F)
Figure 4: Typical 3300 XL 8 mm 5m Proximitor Sensor with 4m Extension Cable @ Tc (Probe is at 25 °C)
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 18 of 31
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
2.25
2.50
8
0.20
6
0.15
4
0.10
2
0.05
0
0.00
-2
-0.05
-4
-0.10
-6
-0.15
-8
-0.20
DSL Error (mm)
DSL Error (mils)
Referenced to
200(mV/mil)
Gap (m m ) 0.00
ISF Error (%)
Referenced to
200(mV/mil)
15
10
5
0
-5
-10
-15
-20
-18
Output (Volts)
-16
-14
-12
-10
-8
-6
-4
-2
0
Gap (m ils)
0
25 °C (77 °F)
10
20
30
65 °C (149 °F)
40
50
60
70
85 °C (185 °F)
80
90
100
100 °C (212 °F)
Figure 5: Typical 3300 XL 8 mm 5m Proximitor Sensor with 4m Extension Cable @ Th (Probe is at 25°C)
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 19 of 31
Gap (m m )
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
2.25
2.50
8
0.20
6
0.15
4
2
0.10
0.05
0
0.00
-2
-0.05
-4
-6
-0.10
-0.15
-8
-0.20
DSL Error (mm)
DSL Error (mils)
0.00
15
ISF Error (%)
10
5
0
-5
-10
-15
-22
-20
-18
Output (Volts)
-16
-14
-12
-10
-8
-6
-4
-2
0
0
10
20
30
40
50
60
70
80
90
100
Gap (m ils)
Tc=+25 °C (+77 °F)
Tc=-34 °C (-30 °F)
Tc=-51°C (-60 °F)
Figure 6: Typical 3300 XL 8mm 9 m Proximitor Sensor with 8m of Extension Cable @ Tc (Probe is at 25 °C)
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 20 of 31
Gap (m m )
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
2.25
2.50
8
0.20
6
4
0.15
0.10
2
0.05
0
-2
0.00
-0.05
-4
-6
-0.10
-0.15
-8
-0.20
DSL Error (mm)
DSL Error (mils)
0.00
15
ISF Error (%)
10
5
0
-5
-10
-15
-22
-20
-18
Output (Volts)
-16
-14
-12
-10
-8
-6
-4
-2
0
0
10
20
30
40
50
60
70
80
90
100
Gap (m ils)
Th=+25 °C (+77 °F)
Th=+85 °C (+185 °F)
Th=+65 °C (+149 °F)
Th=+100 °C (+212 °F)
Figure 7: Typical 3300 XL 8mm 9m Proximitor Sensor with 8m Extension Cable @ Th (Probe is at 25 °C)
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 21 of 31
0.00
10
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
2.25
2.50
0.25
8
0.20
6
0.15
4
2
0.10
0.05
0
0.00
-2
-4
-0.05
-0.10
-6
-8
-0.15
-0.20
-10
-0.25
DSL Error (mm)
DSL Error (mils)
Gap (m m )
15
ISF Error (%)
10
5
0
-5
-10
-15
-24
-22
-20
Output (Volts)
-18
-16
-14
-12
-10
-8
-6
-4
-2
0
Gap (m ils) 0
10
20
Th=+25 °C (+77 °F)
30
40
50
60
70
80
90
100
Th =+260 °C (+500 °F)
Figure 8: Typical 3300 XL Extended Temperature Range Probe and 4m Extended Temperature Range Extension
Cable @ Th (Proximitor Sensor and Probe Tip with 1-foot Cable are at +25 °C)
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 22 of 31
0.00
10
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
2.25
2.50
0.25
8
6
0.20
0.15
4
2
0.10
0.05
0
0.00
-2
-4
-0.05
-0.10
-6
-0.15
-8
-0.20
-10
-0.25
DSL Error (mm)
DSL Error (mils)
Gap (m m )
15
ISF Error (%)
10
5
0
-5
-10
-15
-24
-22
-20
Output (Volts)
-18
-16
-14
-12
-10
-8
-6
-4
-2
0
Gap (m ils) 0
10
20
Th=+25 °C (+77 °F)
30
40
50
60
70
80
90
100
Th=+260 °C (+500 °F)
Figure 9: Typical 3300 XL Extended Temperature Range Probe and 8m Extended Temperature Range Extension
Cable @ Th (Proximitor Sensor and Probe Tip with 1-foot Cable are at +25 °C)
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 23 of 31
Frequency Response to Different Field Wiring Lengths
without Barriers (5 m System)
1
Magnitude (dB)
0
-1
-2
-3
-4
-5
100
1,000
10,000
100,000
Frequency (Hz)
No field wiring
5000' wiring
1000' wiring
12,000' wiring
2000' wiring
Figure 10: Frequency Response, Typical 3300 XL 8mm 5m or 1m System with Varying Lengths of Field Wiring
Attached, No Barriers
Phase Response with Different Field Wiring Lengths, No
Barriers (5 m System)
0
Phase Angle (degrees)
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
100
1,000
No field wiring
5000' wiring
Frequency (Hz)
10,000
1000' wiring
12,000' wiring
100,000
2000' wiring
Figure 11: Phase Response, Typical 3300 XL 8mm 5m or 1m System with Varying Lengths of Field Wiring Attached,
No Barriers
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 24 of 31
Frequency Response to Different Field Wiring Lengths without
Barriers (9 m System)
1
Magnitude (dB)
0
-1
-2
-3
-4
-5
100
1,000
No field wiring
5000' field wiring
Frequency (Hz)
10,000
1000' field wiring
12,000' field wiring
100,000
2000' field wiring
Figure 12: Frequency Response, Typical 3300 XL 8mm 9m System with Varying Lengths of Field Wiring Attached,
No Barriers
0.00
Phase Response with Different Field Wiring Lengths, No
Barriers (9 m System)
Phase Angle (degrees)
-10.00
-20.00
-30.00
-40.00
-50.00
-60.00
-70.00
-80.00
-90.00
-100.00
100
No field wiring
5000' field wiring
1,000
10,000
Frequency (Hz)
1000' field wiring
12,000' field wiring
100,000
2000' field wiring
Figure 13: Phase Response, Typical 3300 XL 8mm 9m System with Varying Lengths of Field Wiring Attached, No
Barriers
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 25 of 31
4
2
3
1
5
6
2.5 (0.10)
7
8
9
10
1.
Probe tip, 8.0 mm (0.31 in) diameter
2.
14.3 mm (9/16 in) for 3/8-24 threads, 17.0 mm (0.67 in) for M10 threads (see Note 2)
3.
Case thread
4.
8 mm (5/16) wrench flats, 4 each
5.
75Ω cable, 3.7 mm (0.15 in) maximum outside diameter, 3.9 mm (0.16 in) maximum outside diameter for FluidLoc cable, 7.6
mm (0.30 in) outside diameter of armor, 9.0 mm (0.35 in) maximum diameter of armor ferrule
6.
Miniature male coaxial connector, 7.23 mm (0.285 in) maximum outside diameter “D”
7.
Unthreaded length “A”
8.
Case length “B”
9.
6.0 mm (0.235 in) maximum
10. Total length “C”, +30%, -0% (see Note 3)
Figure 14: 3300 XL 8mm Proximity Probes, Standard Mount
330101 and 330191, 3/8-24 UNF-2A, without armor 7
330102 and 330192, 3/8-24 UNF-2A, with armor 6
330103 and 330193, M10X1 thread, without armor 7
330104 and 330194, M10X1 thread, with armor 6
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 26 of 31
1
36.3
Max.
(1.43)
3
51.1 (2.01) Max.
2
1.
12 mm (0.49 in) maximum diameter
2.
Connector protector (fluorosilicone material)
3.
12 mm (0.49 in) maximum diameter
Figure 15: Installed Connector Protectors
2
3
1
4
2 (0.08)
5
5 (0.2)
6
7
8
9
1.
Probe tip, 8.0 mm (0.31 in) diameter
2.
7/16 in or M10 hexagonal
3.
Case thread
4.
75Ω cable, 3.7 mm (0.15 in) outside diameter
5.
Miniature male coaxial connector, 7.23 mm (0.285 in) maximum outside diameter “D”
6.
Unthreaded length “A”, 5.0 mm (0.20 in)
7.
Case length “B”, 30 mm (0.12 in)
8.
6.0 mm (0.235 in) maximum
9.
Total length “C”, +30%, -0% (see Note 3)
Figure 16: 3300 XL 8mm Proximity Probes, Reverse Mount 4, 7
330105 and 330195, 3/8-24 UNF-2A threads
330106 and 330196, M10X1 threads
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 27 of 31
2
1
4
3
5
2.54 (0.100)
8
1.
Probe tip, 8 mm (0.31 in) diameter
2.
9.6 mm (0.38 in) maximum diameter
7
6
9
3.
7.9 mm (0.31 in) wrench flats, 4 each
4.
75Ω cable, 3.68 mm (0.145 in) maximum diameter, 3.9 mm (0.16 in) maximum diameter for FluidLoc cable, 8.0 mm (0.315 in)
oustside diameter with armor, 9.0 mm (0.35 in) maximum diameter for armor ferrule
5.
Miniature male coaxial connector, 7.23 mm (0.285 in) maximum outside diameter “D”
6.
Unthreaded length “A”, 5 mm (0.2 in)
7.
Case length “B”, 30 mm (1.2 in)
8.
6.0 mm (0.235 in) maximum
9.
Total length “C”, +30%, -0% (see Note 3)
Figure 17: 3300 XL 8mm Proximity Probes, Smooth Case
330140 and 330197, without armor 7
330141 and 330198, with armor 6
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 28 of 31
2
1
4
83.8
(3.30)
83.8
(3.30)
3
83.8 83.8
(3.30) (3.30)
5
7
8
6
9
1.
7.2 mm (0.285 in) maximum diameter
2.
Miniature male coaxial connector
3.
FEP or PFA coated armor, armor length 300 mm (11.8 in) less than cable length (see Note 6)
4.
75Ω cable, 3.7 mm (0.15 in) maximum outside diameter, 3.9 mm (0.16 in) maximum diameter for FluidLoc cable, 7.6 mm (0.30
in) maximum outside diameter of armor, 9.0 mm (0.35 in) maximum diameter of armor ferrule
5.
7.2 mm (0.285 in) maximum diameter
6.
Stainless steel ferrules, 8.4 mm (0.33 in) diameter
7.
FEP or PFA insulated triaxial cable
8.
Miniature female coaxial connector
9.
Cable length, +20%, -0%
Figure 18: 330130, 3300 XL Extension Cable (FEP Armor and Insulation)
30190, 3300 XL ETR Extension Cable (PFA Armor and Insulation)
1
63.5 (2.50)
50.8
(2.00)
50.8
(2.00)
81.3
(3.20)
61.2
(2.41)
5.1
(0.20)
1.
Mounting option “A”, Options –50 or -90
Figure 19: Panel Mount 3300 XL Proximitor Sensor
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 29 of 31
1
2
70.8 (2.79)
31.7
(1.25)
3
1.
Mounting option “A”, Options –51 or –91
2.
35mm DIN rail (not included)
3.
89.4 mm (3.52 in). Additional 3.05 mm (0.120 in) clearance required to remove DIN rail.
Figure 20: DIN Mount 3300 XL Proximitor Sensor
50
(1.95)
R
86
(3.4)
25.4
(1.00)
50.8
(2.00)
50.8
(2.00)
79.4
(3.125)
61.4
(2.42)
1
63.5
(2.50)
81
(3.2)
50.8
(2.00)
81.3
(3.20)
50.8
(2.00)
61.2
(2.41)
5.1
(0.20)
1.
Mounting option “A”, Options –50 or -90
Figure 21: Physical Mounting Characteristics Showing Interchangeability of 3300 and 3300 XL Proximitor Sensors
when 4-hole Mounting Option Is Used8
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 30 of 31
Notes:
1.
All dimensions on figures are in millimetres (inches) unless otherwise noted.
2.
Standard mount 8 mm probes supplied with 17 mm or 9/16 inch lock nut.
3.
Probes ordered with 5 or 9 metre integral cables have a length tolerance of +20%, -0%.
4.
Reverse mount probes not available with armor or connector protector options.
5.
Letters inside quotation marks on figures refer to probe ordering options.
6.
Stainless steel armor is supplied with FEP outer jacket for standard probes, PFA outer jacket for ETR probes.
7.
FEP jacket is standard non-armored portion of the cable for standard probes, PFA jacket on non-armored portion
for ETR probes.
Use M3.5 or #6 screws for panel-mount Proximitor Sensors (screws provided
when purchasing Bently Nevada housings).
Bently Nevada, CableLoc, ClickLoc, FluidLoc, Keyphasor, NSv, Proximitor, and TipLoc are trademarks of General Electric
Company.
Viton is a trademark of DuPont.
Copyright 1999. Bently Nevada LLC.
1631 Bently Parkway South, Minden, Nevada USA 89423
Phone: 775.782.3611
Fax: 775.215.2873
www.ge-energy.com/bently
All rights reserved.
Specifications and Ordering Information
Part Number 141194-01
Rev. J (11/07)
Page 31 of 31
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330505 Low Frequency Velocity Sensor
Description
The Bently Nevada Low Frequency Velocity Sensor is designed to measure
absolute (relative to free space) bearing housing, casing, or structural
vibration. The two-wire system consists of a transducer and appropriate
cable.
The Low Frequency Velocity Sensor is ideal for capturing vibration data in
installations where vibration frequencies of less than 4 Hz provide valuable
data. Its main use is to measure bearing casing vibrations on hydroelectric
turbines where slow rotating speeds require a low signal to noise ratio. The
330505 Transducer is a two-wire design that uses moving-coil technology
with embedded signal conditioning circuitry to provide a voltage output
directly proportional to the transducer's vibration velocity. The 330505
Transducer connects to an interconnect cable and is then directly attached
into the 3500/46M Hydro Monitor. This transducer currently does NOT
interface with the Trendmaster® family of products. Additionally, due to
capacitance constraints, hazardous area approvals will NOT be available on
this product.
Caution
Due to the nature of high amplitude, low frequency velocity events, the
330505 Low Frequency Velocity Sensor cannot be used for automated
machinery protection. It is designed to provide early warning of pending
machinery problems and to assist in diagnosing machinery problems.
In addition, care should be exercised in the physical installation of the
transducer. Improper installation can result in a degradation of the
transducer’s performance, and/or the generation of signals which do not
represent actual machine vibration.
Upon request, we can provide engineering services to determine the
appropriateness of housing measurements for the machine in question
and/or to provide installation assistance.
Note: For the majority of installations, our Velomitor® family of velocity transducers, which
incorporate solid-state technology, represent superior performance and robustness for casing
velocity measurement applications. However, the sensor family currently has no sensors with a
low frequency range similar to the 330505 Low Frequency Velocity Sensor.
Specifications and Ordering Information
Part Number 169872-01
Rev. A (04/07)
Page 1 of 11
Specifications
Connector:
2-pin Mil-C-5015 receptacle,
hermetically sealed, 300 series stainless
steel.
Parameters are specified from +20 to +30°C (+68 to +86°F)
and 80Hz unless otherwise indicated.
Note: Operation outside the specified limits may result in false readings or
loss of machine monitoring.
Electrical
Mounting Torque:
46 kg cm (40 in-lb) max.
Polarity:
Sensitivity:
Pin A goes positive with respect to Pin B
when the applied velocity is from the
base to the top of the transducer.
20 mV/mm/s (508mV/in/s)
±10%
Note: Please read and understand the User Guide
before attempting to install and use this product.
Frequency response:
0.5 to 1000 Hz (30 to 60,000 cpm) ± 3.0
dB;
Ordering Information
1 to 200 Hz (60 to 12,000 cpm) ± 0.9 dB
330505-AXX-BXX-CXX
Amplitude range:
A: Transducer Mounting Angle
See vibration nomograph (Figure 1)
Amplitude linearity:
±3% to 102 mm/s (4 in/s) peak
Maximum cable
length:
305 metres (1000 feet)
with no degradation of signal, when
used with 3500/46M
Environmental Limits
Operating and storage
temperature range
Maximum mounted surface temperature
−40°C to +100°C (−40°F to +212°F)
01
0° ± 10°
02
90° ± 5°
03
180° ± 10°
B: Internal Mounting Thread
02
3/8-24 UNF-2B
C: Mounting Adapter Option
00
No Adapter
01
1/2 - 20 UNF
02
M8 x 1
03
1/4 - 28 UNF
04
1/4 - 20 UNC
05
1/4 - 18 NPT
06
5/8 - 18 UNF
07
3/8 – 16 UNC
Accessories
169873-01
Shock survivability:
330505 Low Frequency Velocity Sensor
Manual
981 m/s2 (100g) peak
89409-01
Relative humidity:
Individual 1/2 - 20 UNF mounting
adapter.
To 100% non-submerged; case is
hermetically sealed.
89410-01
Physical
Individual M8 x 1 mounting adapter
Weight (typical):
< 375grams (13.2oz)
89411-01
Individual 1/4 - 28 UNF mounting
adapter
Mounting:
See Dimensional Drawings, Figure 2
89412-01
Case material:
300 series stainless steel.
Individual 1/4 - 20 UNC mounting
adapter
89413-01
161191
Individual 1/4 - 18 NPT mounting
adapter
Individual 1/2 - 13 UNC mounting
adapter
04300015
Individual 5/8 - 18 UNF mounting
adapter.
Specifications and Ordering Information
Part Number 169872-01
Rev. A (04/07)
Page 3 of 11
Vibration Nomograph
Figure 1: 330505 Vibration Nomograph
Specifications and Ordering Information
Part Number 169872-01
Rev. A (04/07)
Page 4 of 11
Dimensional Drawing – 330505
Figure 2: 330505 System Dimensional Drawing
Dimensions are in millimeters (inches)
Specifications and Ordering Information
Part Number 169872-01
Rev. A (04/07)
Page 5 of 11
Graphs – 330505 Typical Response
330505
Frequency Response
3
2
Sensitivity (db)
1
0
-1
-2
-3
-4
0.1
1
10
100
1000
100.0
1000.0
Frequency (Hz)
Figure 3: Typical Velocity
Amplitude
330505
Phase Error
120
100
Phase (Degrees)
80
60
40
20
0
-20
0.1
1.0
10.0
Frequency (Hz)
Figure 4: Typical Velocity Phase Error
Specifications and Ordering Information
Part Number 169872-01
Rev. A (04/07)
Page 6 of 11
Table 1: Interconnection Cables and Accessories
APPLICATION
PART NUMBER
DESCRIPTION
*Note: AA - Specifies the length (in feet) of cable required
Splash Proof Interconnect Cable
02173034
Shielded 0.382 mm2 (22 AWG) cable with a splash
proof boot over a female connector at the
transducer end and flush cut at the monitor end.
Temperature range -55 to 125°C (-67 to 257°F).
See Figure 5
Splash Proof Interconnect Cable
CB2W100-AA*
Shielded 0.382 mm2 (22 AWG) cable with splash
proof over molded boot, blunt cut at the monitor
end. Temperature range -50 to 200 C (-58 to
392 F). See Figure 6
Standard Interconnect Cable
9571-AA*
Shielded 0.382 mm2 (22 AWG) cable with a moisture
resistant female connector at the transducer end
and ring lugs at the monitor end. Temperature
range -29 to 121 C (-20 to 250 F). See Figure 7
Standard Armored Interconnect
Cable
84661-AA*
Stainless steel armor over shielded 0.382 mm2 (22
AWG) cable with a moisture resistant female
connector at the transducer end and ring lugs at
the monitor end. Temperature range -29 to 121 C
(-20 to 250 F). See Figure 8
Right Angle Interconnect Cable
89477-AA*
Shielded 0.963 mm2 (18 AWG) cable with a moisture
resistant right angle female connector at the
transducer end and ring lugs at the monitor end.
Temperature range -29 to 121 C (-20 to 250 F).
See Figure 9
Short Run Interconnect Cable
122129-AA*
Shielded 0.963 mm2 (18 AWG) cable with a moisture
resistant female connector at the transducer end
and ring lugs at the monitor end. Temperature
range -29 to 121 C (-20 to 250 F). See Figure 10
0.963 mm2 (18 AWG) Bulk Cable
02173006
Shielded twisted pair. Same cable as used on
89477-AA and 122129-AA. Specify number of feet.
0.382 mm2 (22 AWG) Bulk Cable
02173007
Shielded twisted pair. Same cable as used on
9571-AA and 84661-AA. Specify the number of
feet. The maximum length that should be used
with the transducer is 305 m (1000 ft)
Spare Connector
00502025
Same connector as used on 9571-AA and
84661-AA
Right Angle Connector
101212-01
Right angle connector kit. Same connector as used
on 89477-AA.
(*Recommended for High
Electromagnetic Noise Environment and
European Conformance (CE))
Specifications and Ordering Information
Part Number 169872-01
Rev. A (04/07)
Page 7 of 11
Figure 5: Splash Proof Interconnect Cable
Figure 6: Splash Proof Interconnect Cable
Specifications and Ordering Information
Part Number 169872-01
Rev. A (04/07)
Page 8 of 11
Figure 7: Standard Interconnect Cable
Figure 8: Standard Armored Interconnect Cable
Specifications and Ordering Information
Part Number 169872-01
Rev. A (04/07)
Page 9 of 11
Figure 9: Standard Right Angle Interconnect Cable
Specifications and Ordering Information
Part Number 169872-01
Rev. A (04/07)
Page 10 of 11
Figure 10: Short Run Interconnect Cable
Bently Nevada, Trendmaster and Velomitor are trademarks of General Electric Company.
Copyright 2005. Bently Nevada LLC.
1631 Bently Parkway South, Minden, Nevada USA 89423
Phone: 775.782.3611
Fax: 775.215.2873
/b l
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