Type Series 81000TM
medium-voltage controllers
selection and application guide
E50001-F710-A120-X-4A00
Answers for energy.
Series 81000TM
medium-voltage
controllers
Siemens experience gained in over 50
years of supplying medium-voltage
motor controllers in the U.S. has been
captured in the Series 81000 design.
The objective has been to incorporate
features designed to provide safety,
while simplifying operation and
maintenance, as well as minimizing
installation cost.
Series 81000 medium-voltage
controllers are designed for use in
industrial plants, commercial buildings,
electric utility generating plants,
cogeneration installations and other
electrical systems.
2
Table of
contents
Overview
4-6
Construction
7 - 17
Motor protection
18 - 20
Vacuum contactors
21 - 25
Fuse applications
26 - 29
Dimensions
30 - 33
Typical layout arrangements
34 - 37
Standard controller components
38 - 43
3
Overview
The Siemens Series 81000TM mediumvoltage motor controller has a modular
design consisting of one or more
contactors, housed in a freestanding sheet
steel enclosure. Each controller is NEMA
Class E2 and includes three currentlimiting fuses. The enclosure is designed
for front access, allowing the equipment to
be located against a wall or back-to-back.
The design and manufacture of the Series
81000 medium-voltage controller unit is
based on our experience as a leading
manufacturer of motors worldwide. The
benefits of this experience result in control
scheme flexibility and increased safety,
while simplifying operations, maintenance
and minimizing installation costs. Typical
applications include:
S
quirrel-cage induction motors
(non-reversing, reversing or
multi-speed)
R
educed-voltage starters
(autotransformer, reactor or
solid-state type)
S
ynchronous motors
(brush or brushless type)
Transformer feeders
Capacitor bank feeders
Power bus feeders (tie).
4
The utilization voltage range for controllers
is 2.3 kV through 13.8 kV.
The Siemens Series 81000 mediumvoltage controller allows the user to
combine vacuum contactors, latched
contactors and load-break switches in one
lineup. The user can also connect directly
to Siemens type GM-SG medium-voltage
metal-clad switchgear with a transistion
section. This provides extreme flexibility in
systems design.
Load-break switches (LBS)
Drawout controllers
Drawout controllers include:
Full-voltage non-reversing (FVNR)
Reduced-voltage primary reactor (RVPR)
R
educed-voltage autotransformer
(RVAT)
Reduced-voltage solid-state (SSRV)
Brushless synchronous (BL-SYNCH)
Brushtype synchronous (BT-SYNCH)
Two-speed two-winding (2S2W)
Two-speed one-winding (2S1W)
Reversing.
Overview
Controller
type
2.3 kV
4.16 kV
6.9 kV
13.8 kV
Maximum
motor size
Drawout
to 3,000 HP
to 5,500 HP
to 7,000 HP
to 5,500 HP
SSRV
to 3,000 HP
to 5,500 HP
to 4,000 HP
to 6,500 HP
Load-break
switch (LBS)
600 A
Fused
Fused
----
----
Unfused
Unfused
Unfused
----
Fused
Fused
----
----
Unfused
Unfused
Unfused
----
1,200 A
Table 1: Controllers and load-break switches (LBS)
System
voltage
Vacuum
contactor
Enclosed
Interrupting
continuous capacity
ampere
rating
Motor horsepower rating
(three-phase)
Unfused Fused Synchronous Induction
class E1 class motors
motors
E2
Transformer loads
Maximum Maximum Maximum
motor
threefuse
fuse
phase
rating
rating
kV
Type
A
kA
kA
0.8
PF
1.0
PF
HP
2.3
97H3
360
5
50
1,500
1,750
1,500
24R
1,500
450E
2.3
96H6
720
7.2
50
3,000
3,500
3,000
57X
2,000
600E
4.0
97H3
360
5
50
2,500
3,000
2,500
24R
2,500
450E
4.0
96H6
720
7.2
50
5,500
6,000
5,500
57X
3,500
600E
4.6
97H3
360
5
50
2,500
3,000
2,500
24R
2,500
450E
4.6
96H6
720
7.2
50
5,500
6,000
5,500
57X
4,000
600E
1
6.9
97H3
360
4.2
50
4,000
5,000
4,000
24R
1,500
200E
6.91
96H6
720
7.2
50
7,000
7,500
7,000
57X
2
2
13.8
3TL71
300
3.0
50
5,500
6,000
5,500
300E
5,500
300E
Table 2: Ratings
kVA
Footnotes:
1.
Nominal motor voltage 6.6 kV.
(Temporary overvoltage of 7.6 kV)
2.
Consult factory.
5
Overview
Contactors class E1 unfused
NEMA refers to this unfused, magnetically
held device as a class E1 controller. Type
97H3 (360 A) vacuum contactors are rated
5 kA (up to 5.0 kV) and 4.2 kA (up to
7.2 kV) interrupting capacity, while the
type 96H6 (720 A) vacuum contactor is
rated 7.2 kA interrupting capacity up to
7.2 kV. Type 3TL71 (300 A) vacuum
contactor is rated 3.0 kA interrupting
capacity up to 13.8 kV.
Contactors class E2 fused
To meet interrupting capability required for
NEMA class E2 controllers, types 97H3,
96H6 and 3TL71 contactors are provided
with primary current-limiting fuses in all
three phases. The resulting interrupting
ratings are shown in Table 2.
Standards
The key standards applicable to mediumvoltage controllers are:
NEMA ICS 3-2005, part 1
UL-347
NEC (Article 490).
Series 81000 controllers with vacuum
contactors comply fully with these
standards, and can be provided in
compliance with specialty standards, such
as the California Code.
Vacuum technology
Series 81000 controllers utilizing type
97H3, 96H6 or 3TL71 vacuum contactors
offer extended service life and provide
long mechanical and electrical life with
minimal maintenance.
6
Arc interruption is completely contained
within vacuum interrupters, eliminating
the need for arc chutes, blowout coils, pole
plates and similar wear items.
Extended electrical life
Since arc interruption takes place in a
sealed environment within the vacuum
interrupter, arcing times are very short. As
a result, arc erosion of the contacts is
minimal, and an operating life of 250,000
operations at rated load-current is typical.
Single-phase protection
The Siemens type 3RU overload relay
(standard) is available in the Series 81000.
Unlike conventional overload relays
provided by other manufacturers, the type
3RU includes standard single-phase
protection.
UL Listing
The Series 81000 offers a broad range of
UL Listed (and C-UL) class E2 controllers.
Consult your local Siemens representative
for information on UL Listing (or C-UL)
status for specific projects.
Power fuses
The current limiting fuses used with type
97H3 vacuum contactors are ANSI Class "R"
type FM (up to 4.8 kV) and type A720R
(over 4.8 kV and up to 7.2 kV) rated for
motor starting duty.
Class "E" fuses, used for non-motor loads
such as transformers and capacitor banks,
can also be provided in Series 81000
controllers.
Class "E" fuses, type CL-14 are used for fullvoltage and solid-state, reduced-voltage
starters above 7.2 kV up to 13.8 kV.
Construction
Enclosures
Grounded steel
barriers between
power bus and
vacuum contactors
Available in a variety of styles to meet
most applications, enclosure types include:
NEMA 1 non-gasketed
Low-voltage or
controller
compartment
NEMA 1A gasketed
NEMA 2 drip-proof
NEMA 12 dust-tight
Shutters
NEMA 3R non-walk-in
NEMA 3R walk-in
External finish is ANSI 61 light gray
polyester, electrostatically applied. Special
colors and finishes are optionally available.
Compartment segregation
Each Series 81000 controller assembly
consists of three areas completely
segregated from one another:
Steel barrier between
compartments
Contactor compartment
Power bus system (high-voltage)
Low-voltage section.
A standard vertical structure consists of
three 30" (762 mm) high compartments.
One, two or three controllers (depending
on rating) may be included in one
structure.
When three controllers are required, the
horizontal bus (including ground bus) is
mounted in an additional top-mounted
10" (254 mm) (13" (330 mm) for 3,000 A)
high bus compartment. An optional
configuration using two 45" (1,143 mm)
high compartments with top-mounted bus
is also available to comply with American
Petroleum Institute specifications.
A 15kV FVNR structure consists of three
vertical structures. The overall controller
dimensions are 72" (1,828 mm) wide,
48" (1,219 mm) deep and 90" (2,186 mm)
high, without main bus. The incoming
cable section is located on the right, while
the outgoing cable section is located on
the left. Both cable sections are 18“
(457 mm) wide. The center section
includes the drawout fuse-carriage,
stationary main contactor, low-voltage
compartment and a 1.0 kVA fixedmounted CPT.
Figure 1: Series 81000 drawout controller compartment segregation. Unit is not complete and is
shown for illustrative purposes only.
A 15 kV SSRVS structure consists of three
vertical sections. The overall controller
dimensions are 96" (2,438 mm) wide,
66" (1,677 mm) deep and 90" (2,186 mm)
high, without main bus. The SCR chassis
units are located in the two sections on the
left end, which also includes the lowvoltage compartment, a 1.0 kVA fixedmounted control power transformer and
the termination space for the outgoing
load-side cables. The third section houses
the drawout fuse-carriage, as well as the
stationary main and bypass contactors and
the termination space for the incoming
power cables.
Main bus can be provided on 15 kV FVNR
and 15 kV SSRVS controllers, using a topmounted main bus housing. This adds 15"
(381 mm) to the height of the structure.
The main bus is available in 1,200 A,
2,000 A or 3,000 A ratings.
7
Construction
Construction
Figure 2: Low-voltage door-in-door
compartment for panel devices
8
Figure 3: Main and vertical bus construction (shown with optional insulation).
Transitions to type GM-SG 5 kV-15 kV switchgear are available.
Low-voltage compartment (up to 7.2kV)
Power bus
All active starter compartment front panels
are provided with a "door-in-door" for
access to the controller low-voltage area.
Devices normally mounted in this section
include the Siemens 9350 power meter,
overload relay, ammeter, control relays,
timing relays, pushbuttons, indicating
lights, etc. Location within this section
isolates the devices from any source of
high voltage and allows access to these
control compartments without
interrupting service. Terminal blocks for
control circuit wiring terminations are also
accessible in this compartment. When
extensive metering or special protective
devices are required, the upper 30"
(762 mm) high compartment can be used
as a separate low-voltage compartment in
addition to the "door-in-door" low-voltage
compartment associated with each
individual controller.
Power bus is isolated behind grounded
steel barriers. Automatic shutters are
provided on drawout controllers to cover
the line-side bus stabs whenever a starter
door is opened or the drawout carriage is
in the disconnect position. Horizontal bus
ratings range from 1,000 A through
3,000 A and are detailed in Table 3.
Vertical tap buses in each section are rated
360 A, 540 A or 720 A, depending on the
application. The standard bus material is
silver-plated copper bus. Tin-plating is
available as an option. Insulated bus with
boots are available as options.
Construction
Bus
type
Continuous Conductor size
amperes (A) in inches (mm)
Conductor
material
Current
density (A/in2)
Main horizontal
1,000
0.25 (6) x 3.0 (76)
Copper
1,333
1,200
0.375 (10) x 3.0 (76)
Copper
1,067
2,000
Two 0.375 (10) x 3.0 (76)
Copper
889
3,0001
Three 0.50 (13) x 3.0 (76)
Copper
667
300 (15 kV)
0.25 (6) x 2.0 (51)
Copper
600
360
0.25 (6) x 1.0 (25)
Copper
1,440
540
0.25 (6) x 1.5 (38)
Copper
1,440
720
0.50 (13) x 2.0 (51)
Copper
720
600
0.25 (6) x 2.0 (51)
Copper
1,200
Vertical
Ground
Footnote:
1.
3,000 A bus must be located on
top of unit in 13” (330 mm) top
hat (15” (381 mm) for 15 kV).
Table 3: Bus ratings
Drawout controllers isolation disconnect
(drawout mechanism)
Series 81000 controllers use the complete
contactor (or fuse carriage drawout
assembly for 720 A or 15 kV controllers) as
the high-voltage isolation switch, as
described in NEMA ICS 3-2005, Part 1,
clause 7.2.c and UL-347-2009, clause
5.202.2. Horizontal forward and back
movement of the drawout assembly
simultaneously opens and closes the line
and load disconnect contacts.
Because both line-side and load-side
terminals are disconnected, there is no
need for grounding the load-side terminals
in the open position. Non-conducting
glass-polyester barriers (shutters)
completely isolate the stationary-line
terminals. The shutter mechanism is
positively driven by the same linkage
mechanism that moves the drawout
carriage from the connected to the
disconnected position.
Interlocking
A combination of mechanical and electrical
interlocks are included to:
P
revent inward and back movement of
the drawout carriage (isolation switch),
unless the contactor is open
P
revent the opening of the highvoltage compartment door, unless the
drawout carriage (isolation switch) is in
the disconnect position
Prevent the forward movement of the
drawout carriage (isolation switch) to
the connected position, unless the
high-voltage compartment door is
closed.
The drawout operation is a simple onestep process. After the contactor is open
(or de-energized), move the racking
handle to the "OFF" position
(disconnected), open the starter door and
the contactor is ready to be rolled out of
the compartment.
9
Construction
Control power transformers (CPTs)
Test circuit
The basic controller includes, as standard,
a 0.75 kVA CPT mounted on the drawout
carriage. Oversize ratings are available up
to 3 kVA, mounted on the drawout
carriage.
Each Series 81000 controller is provided
with a built-in test circuit for operation of
the contactor from a remote source of
control power, when the "test-run" switch
is set at the "test" position. This circuit will
function only if the contactor is
disconnected from its primary source of
power and the "test-run" switch is set at
the "test" position. It allows maintenance
and operation of the main contactor and
low-voltage control circuitry without
requiring energizing the motor, or
disconnecting any load cables, and
prevents back-energization of the CPT.
Blown fuse-trip option
A blown fuse-trip option can be supplied to
open the contactor in the event of a blown
primary power fuse.
Figure 4: Control power transformer
and fuses
A normally closed (NC) contact in the
closing coil circuit opens when any primary
power fuse operates, causing the
contactor to open. A blown fuse-trip
option is not available for 15 kV
controllers. For SSRVS controllers, blown
fuse tripping is accomplished in the
protective software of the SSRVS unit.
Latched contactors
A latched version of the contactor with
manual or electrical release is available for
feeder applications.
The mechanical latch keeps the contactor
closed even when power to the coil has
been removed. A typical application is as a
transformer feeder where it is not desired
that the controller open during a
momentary loss of primary power.
Figure 5: Blown fuse-trip bar option
CPT
kVA
Primary
fuse rating
Secondary
fuse rating
2.3 kV
3.3 kV
4.0 kV
4.6 kV
6.6 kV
115 V
230 V
0.75
1E
1E
1E
0.5E
1E
10A
6.25A
2.0
3E
2E
2E
2E
1E
20A
10A
3.0
4E
3E
2E
2E
2E
30A
15A
Table 4: CPT fuse sizes
10
Construction
Load-break switches (LBS) (up to 7.2 kV)
Load-break switches rated 400 A, 600 A or
1,200 A can be incorporated into the
Series 81000 as main disconnect or feeder
devices. The switches are manually
operated, quick make, quick break
disconnect switches. The switch door
includes a viewing window for visual
inspection of the switch blade status. The
door and switch operating handle are
mechanically interlocked to ensure the
door cannot be opened with the switch
closed and the switch cannot be closed
with the door open. In addition, the switch
is covered with a plexiglass barrier. The
switches are fixed mounted and can be
equipped with fixed-mounted fuses.
Unfused switches or fused switches with
fuses up to 900E will fit in a full height 36"
(914.4 mm) wide section. 1100E and
1350E fuses require an additional 36”
(914.4 mm) wide section. Optionally, the
400 A feeder switches will fit in a 30"
(762 mm) high controller compartment.
Optional accessories for the load-break
switches include auxiliary contacts (2 NO
and 2 NC), shunt trip, blown fuse indicator
or motor operator. The switch ratings are
detailed in Table 5.
Figure 6: Load-break switch (LBS)
Ratings
Switch type
400 A
600 A
1,200 A
BIL
60 kV
60 kV
60 kV
Unfused interrupting
400 A
600 A
1,200 A
Fused interrupting
50 kA
50 kA
50 kA
(31 kA for 1100E and 1350E)
Continuous amperes
400 A
600 A
1,200 A
Fault close and
momentary rms kA
22.5 kA
40 kA
61 kA
Table 5: Switch ratings
11
Construction
Reduced-voltage starters
For loads requiring reduced-voltage
starting, the Series 81000 design offers
three options. Primary reactor (RVPR),
autotransformer (RVAT) and solid-state
(SSRV) controllers are available as drawout
controllers.
Reduced-voltage primary reactor (RVPR)
controllers
Figure 8: RVAT - autotransformer and start
contactor compartment
Figure 7: RVAT - main vacuum contactor
compartment
Starter
type
Motor
voltage
Motor
current
Line
current
Torque
FVNR
100
100
100
100
RVAT 80% tap
80
80
64
64
RVAT 65% tap
65
65
42
42
RVAT 50% tap
50
50
25
25
RVPR 80% tap
80
80
80
64
RVPR 65% tap
65
65
65
42
RVPR 50% tap
50
50
50
25
Table 6: Starting characteristics of controller type expressed in percent rated value
12
Reduced-voltage primary reactor
controllers consists of a main contactor,
run contactor and a primary reactor with
80, 65 and 50 percent voltage taps,
factory set at 65 percent. The standard
reactors are NEMA medium duty-rated for
three 30-second starts per hour, heavyduty starting reactors are available for
special applications. The primary reactors
are sized based on the motor locked rotor
current.
Reduced-voltage autotransformer
(RVAT) controllers
Reduced-voltage autotransformer
controllers consist of a main contactor,
shorting contactor, run contactor and an
autotransformer with 80, 65 and 50
percent voltage taps, factory set at 65
percent. The standard autotransformers
are NEMA medium duty-rated for three
30-second starts per hour. Heavy-duty
autotransformers are available for special
applications. The autotransformers are
sized based on the locked rotor current of
the motor. Starting sequence is closed
transition.
Construction
Solid-state, reduced-voltage (SSRV)
controllers
Solid-state, reduced-voltage controllers
consist of a main contactor, SCR chassis
and a line-start rated bypass contactor. The
SSRV starter provides the most flexible
starting options, offering selectable
current or voltage ramps. For emergency
full-voltage starting, the bypass contactor
can be used as an across-the-line starter by
changing a control switch position. As an
option, the starter can be equipped with a
permanent emergency across-the-line
starting option including an additional set
of current transformers, normal/
emergency selector switch and a bi-metal
overload relay. Repositioning power cables
for this option is not required.
Benefits of solid-state, reduced-voltage
starting:
Reduce torque shock damage
Increase motor and drive train reliability
Limit starting kVA
Maintain future system flexibility
S
oft start and soft stop pumps to
control water hammer
Reduce hydraulic/mechanical problems.
The SCR logic control incorporates the
following standard protection, metering
and parameter adjustments:
Initial voltage - 10 to 50 percent
nominal voltage (5 to 85 percent
optional)
C
urrent limit -100 to 400 percent of
motor full-load amperes (FLA) (100 to
700 percent optional)
A
cceleration time -1 to 30 seconds (1
to 90 seconds optional)
D
eceleration time - 0 to 30 seconds (0
to 90 seconds optional)
P
ump control - four closed-loop start
and stop curves
Pulse (kick) start
1 second 70 to 700 percent of
<
motor FLA
1 second 70 to 400 percent of
≥
motor FLA
U
nder voltage trip - 50 to 90 percent,
adjustable trip delay 1 to 10 seconds
O
ver voltage trip - 110 to 125 percent,
adjustable trip delay 1 to 60 seconds
U
nder current (load loss) trip - 20 to 90
percent of motor FLA (1%), adjustable
trip delay 1 to 40 seconds
A
llowable restarts - 0 to 10, adjustable
time inhibit
Figure 9: Solid-state, reducedvoltage controller
E
lectronic overload class - 5 to 30 ANSI
or IEC
E
lectronic shear pin - trips within one
cycle of setpoint
P
hase loss - one or more phases
missing
P
hase sequence - phase sequence
incorrect
S
horted solid-state silicon-controlled
rectification (SCR) internal fault
detected
C
onnection error - internal fault/motor
connection
S
tarter over temp - heatsink over
temperature
Elapsed time meter
Maximum current
Starting time for last start
Total number of starts
Cause of last fault
Percentage of current at last trip
Total number of trips
R
S-485 with Modbus remote terminal
unit (RTU) protocol
Opto-isolated inputs
N
on-volatile memory for programming
and faults
Programmable in four languages.
13
Construction
Figure 10: Type 3RB overload relay
Overload protection - types 3RU or 3RB
Current transformers (CTs)
Running overcurrent (overload) protection
for the motor must also be provided
according to NEMA standards. This
overload (or longtime) protection can be
provided by the Siemens type 3RU (OLR)
bimetallic thermal overload relay. This
three-phase adjustable relay provides
inherent single-phase protection and
phase unbalance protection with NEMA
class 10 tripping characteristics, providing
optimum protection for motors having
acceleration times of six seconds or less
and allowable hot locked rotor times of
five seconds or more. It is equipped with
an isolated normally open contact to
actuate a remote alarm in the event of an
overload trip.
Starters using conventional overload relays
are provided with current transformers
mounted in the cable termination area of
the controller compartment. These are
used to drive the overload relay, ammeter
or other devices that require a current
input.
CT selection takes into consideration the
burden and accuracy requirements that are
appropriate for the specified instrumentation and protective devices. The
secondary current rating is always 5 A. The
primary current rating is selected so that
the actual secondary current will be
between 3 A and 4 A with the motor (or
other load) operating at full load.
For applications that require longer
acceleration times, Siemens offers the type
3RB solid-state overload relay, with class
10, 20 or 30 tripping characteristics.
Applications at 7.2 kV or below use the
type 81CT10 CT with standard accuracy
rating. Higher accuracy class CT (type
81CT20) or higher burden CTs (type
81CT50) are also available as options.
For unusual applications, solid-state or
switchgear type overcurrent relays are
available.
Applications above 7.2 kV use type MD
CTs.
Refer to Tables 7-10 for details.
Figure 11: Type 3RU overload relay
Figure 12: Current transformers and
cable termination area
14
Construction
Table 7: Relay class C10 standard CTs, Siemens type 81CT10
Ratio
B0.2
B0.5
B0.9
Relay
class
Primary
cable
turns
Cable
size
AWG
Used on
B0.1
60 Hz metering accuracy at burden
30:5
0.6
0.6
1.2
2.4
C08
Five
#8
360 A
40:5
0.3
0.6
0.6
1.2
C10
Five
#8
360 A
50:5
0.3
0.6
0.6
1.2
C10
Four
#6
360 A
75:5
0.3
0.3
0.3
0.6
C10
Four
#6
360 A
100:5
0.3
0.6
0.6
1.2
C10
Two
#2
360 A
150:5
0.3
0.3
0.3
0.6
C10
Two
#2
360 A
200:5
0.3
0.6
0.6
1.2
C10
One
2/0
360 A
250:5
0.3
0.3
0.6
1.2
C10
One
2/0
360 A
300:5
0.3
0.3
0.3
0.6
C10
One
2/0
360 A
400:5
0.3
0.3
0.3
0.3
C10
One
4/0
360 A
500:5
0.3
0.3
0.3
0.3
C20
One
4/0
360 A
600:5
0.3
0.3
0.3
0.3
C20
One
4/0
360 A
500:5
0.3
0.3
0.3
0.3
C20
One
4/0
720 A
600:5
0.3
0.3
0.3
0.3
C20
One
4/0
720 A
750:5
0.3
0.3
0.3
0.6
C20
One
4/0
720 A
800:5
0.3
0.3
0.3
0.3
C20
One
4/0
720 A
1,000:5
0.3
0.3
0.3
0.3
C10
One
4/0
720 A
Table 8: Relay class C20 optional CTs, Siemens type 81CT20
Ratio
60 Hz metering accuracy at burden
B0.2
B0.5
B0.9
Relay
class
Primary
cable
turns
Cable
size
AWG
Used on
B0.1
25:5
0.6
0.6
1.2
2.4
C20
Four
#6
360 A
30:5
0.6
0.6
1.2
2.4
C20
Five
#6
360 A
40:5
0.6
0.6
0.6
1.2
C20
Five
#6
360 A
50:5
0.6
0.6
1.2
2.4
C20
Two
#6
360 A
75:5
0.6
0.6
1.2
2.4
C20
Two
#6
360 A
100:5
0.6
0.6
1.2
2.4
C20
One
#2
360 A
150:5
0.6
0.6
1.2
2.4
C20
One
#2
360 A
200:5
0.6
0.6
0.6
1.2
C20
One
2/0
360 A
250:5
0.3
0.3
0.6
1.2
C20
One
2/0
360 A
300:5
0.3
0.3
0.3
0.6
C20
One
2/0
360 A
400:5
0.3
0.3
0.3
0.6
C20
One
4/0
360 A
600:5
0.3
0.3
0.3
0.3
C20
One
4/0
360 A
600:5
0.3
0.3
0.3
0.3
C20
One
4/0
720 A
750:5
0.3
0.3
0.3
0.3
C20
One
4/0
720 A
800:5
0.3
0.3
0.3
0.3
C50
One
4/0
720 A
1,000:5
0.3
0.3
0.3
0.3
C50
One
4/0
720 A
15
Construction
Table 9: High-burden optional CTs, Siemens type 81CT50
Ratio
60 Hz metering accuracy at burden
B0.1
B0.2
B0.5
B0.9
Relay
class
Primary
cable
turns
Cable
size
AWG
Used on
25:5
0.3
0.6
1.2
1.2
C50
Six
#6
360 A
30:5
0.6
0.6
1.2
2.4
C50
Five
#6
360 A
40:5
0.3
0.3
0.6
0.6
C50
Five
#6
360 A
50:5
0.3
0.6
1.2
1.2
C50
Three
#6
360 A
75:5
0.3
0.6
1.2
1.2
C50
Two
#6
360 A
100:5
0.3
0.3
0.6
0.6
C50
Two
#2
360 A
150:5
0.3
0.6
1.2
1.2
C50
One
#2
360 A
200:5
0.3
0.3
0.6
0.6
C50
One
2/0
360 A
250:5
0.3
0.3
0.6
1.2
C50
One
2/0
360 A
300:5
0.3
0.3
0.6
0.6
C50
One
2/0
360 A
400:5
0.3
0.3
0.3
0.3
C50
One
4/0
360 A
600:5
0.3
0.3
0.3
0.3
C50
One
4/0
360 A
600:5
0.3
0.3
0.3
0.3
C50
One
4/0
720 A
750:5
0.3
0.3
0.3
0.3
C50
One
4/0
720 A
800:5
0.3
0.3
0.3
0.3
C50
One
4/0
720 A
1,000:5
0.3
0.3
0.3
0.3
C50
One
4/0
720 A
Table 10: Type MD torrodial standard-accuracy CTs for 15 kV controllers
Ratio
16
60 Hz metering accuracy at burden
B0.1
B0.2
B0.5
B0.9
Relay
class
100:5
2.4
----
----
----
C15
150:5
0.6
2.4
----
----
C20
200:5
0.6
1.2
----
----
C25
250:5
0.6
1.2
2.4
----
C35
300:5
0.6
0.6
1.2
2.4
C40
400:5
0.3
0.6
1.2
2.4
C60
500:5
0.3
0.3
0.6
1.2
C75
Construction
Voltage transformers (VTs)
Optional voltage transformers are available
in fixed-mounted or trunion-mounted (rollout for 7.2 kV and above) versions.
Trunion-mounted VTs typically require a
30" (762 mm) high drawout compartment,
while fixed-mounted VTs can be mounted
in the upper low-voltage compartment
and are barriered to prevent accidental
contact (refer to Table 11 for VT ratings).
Distribution transformers
For larger auxiliary loads that need to be
fed from the Series 81000 medium-voltage
control center, NEMA standard distribution
transformers can be installed. These are
available in single-phase sizes from 3 kVA
to 25 kVA and in three-phase sizes from
9 kVA to 45 kVA. Transformers include
standard primary taps (four 2.5 percent
taps) and class H insulation rated 180 °C
temperature class. The distribution
transformers are provided with primary
fuse protection and a molded-case circuit
breaker on the secondary side. The
transformers are stationary mounted and
are rated 30 kV BIL. As standard, the
primary fuses are fixed mounted. Optional
trunion-mounted fuses are also available.
The fuse trunion is mechanically
interlocked with the secondary molded
case circuit breaker to ensure that
secondary loads are de-energized prior to
operation of the trunion.
Transformers will require a 30" (762 mm)
high controller compartment, an
additional 30" (762 mm) height is required
for the optional fuse trunion.
Auxiliary contacts
All vacuum contactors are supplied with
two NO and two NC auxiliary contacts
available for customer use. Extra contacts
are available through the use of the master
relay (MR) or extra control relays.
Figure 13: Voltage transformer (trunion-mounted shown)
Voltage
class
Ratio
Accuracy class at 120 V
secondary
BIL rating
X
VA
thermal
rating1
W, X
Y
5 kV
2,400:120
0.3
0.6
1.2
600
45 kV
5 kV
4,200:120
0.3
0.6
1.2
600
45 kV
5 kV
4,800:120
7 kV
6,900:120
0.3
0.6
1.2
600
45 kV
0.3
0.3
1.2
1,500
75 kV
7 kV
15 kV
7,200:120
0.3
0.3
1.2
1,500
75 kV
12,000:120
0.3
0.3
1.2
1,500
95 kV
15 kV
14,400:120
0.3
0.3
1.2
1,500
95 kV
Table 11: Voltage transformer ratings ‒ fixed- or
trunion-mounted
Footnote:
1.
30 °C ambient.
17
Motor protection
Motor protection options
Drive motors often play a decisive role in
the success of a production process. Motor
breakdowns frequently result in damage to
driven equipment and production
shutdowns. The resulting cost significantly
exceeds the cost of repairing the motor.
Optimum design of the motor protection
ensures that damage from thermal
overload is minimized with little reduction
in service life. Secondary faults are
minimized in the event of short circuits,
ground faults and winding faults. The
spectrum extends from small mediumvoltage motors with an output of a few
hundred horsepower to large mediumvoltage motors with outputs measured in
thousands of horsepower. Protection
system design must be based on the rating
of the motor, the importance of the drive
for the technological process, the
operating conditions and the requirements
of the motor manufacturer.
Commonly specified motor protection
functions and motor protective relay
selection tables are provided in Table 12.
Figure 14: Type 7SK80 protective relay
Fault
Protection
ANSI number
Stator thermal overload
Stator thermal overload protection
49
Rotor thermal overload during start
Excessive starting time or blocked rotor
Motor starting time supervision
48
Too frequent
Restart inhibit
66, 49R
Ground fault
Short circuit
Ground fault protection
50G, 64G, 67G
Overcurrent time protection
50, 51
Current differential protection
87
Phase loss
Negative sequence protection
46
Bearing overload
Temperature sensors (RTDs)
38
Overheating of plan on unloaded drives (pumps, compressors)
Undercurrent protection
37
Undervoltage
Undervoltage protection
27
Induction operation (of a synchronous machine)
Underexcitation (loss of field) protection
40
Table 12: Protection functions for various types of motor faults
18
Motor protection
Table 13: Motor protection selection
Induction machine
Synchronous machine
up to 1,000 HP
up to 2,000 HP
Type 7SK80 or 7SJ61
Type 7UM61
Basic motor protection plus 14, 27,
50BF, 51M and 86
Basic motor protection plus 27/59, 32,
51V, 60, 67 and 81U/O
Control functions
Control functions
Additional input/outout (I/O)
Additional I/O
Flexible protection functions
Larger HMI display
Larger human machine interface (HMI)
display
Up to 12 external RTDs1
Up to 12 external resistance
temperature detectors (RTDs)1
1,000 HP - 2,500 HP
Type 7SK80 or 7SJ61
Basic motor protection plus 14, 27,
50BF, 51M and 86
Control functions
Additional I/O
Flexible protection functions
Larger HMI display
Up to 12 external RTDs1
Over 2,000 HP
Type 7UM61
Type 7UM62
Basic motor protection plus 32, 27/59,
51V, 60, 67 and 81U/O for variable
speed applications
Basic motor protection plus 24, 27/59,
32, 40, 50BF, 51V, 67, 81R, 81U/O and
87
Control functions
Control functions
Additional I/O
Additional I/O, transducer outputs
Larger HMI display
Up to 12 external RTDs
Larger HMI display
1
Up to 12 external RTDs1
Over 2,500 HP
Type 7UM61
Basic motor protection plus 32, 27/59,
51V, 60, 67 and 81U/O
Control functions
Additional I/O
Larger HMI display
Up to 12 external RTDs1
Footnote:
1.
Optional with up to five RTD inputs in protective relay (type 7SK80 only) or up to 12 RTDs using two type 7XV5662 RTD units.
19
Motor protection
Table 14: Protection functions for various types of motor faults
Function Description
Type
7SJ60
7SK80
7SJ61
7SJ62
7UM61
7UM62
50/51
Overcurrent instaneous/time
Yes
Yes
Yes
Yes
Yes
Yes
50N/51N
Ground overcurrent instaneous/time
Yes
Yes
Yes
Yes
Yes
Yes
51M
Load jam
----
Yes
Optional
Yes
----
----
51V
Voltage controlled time
----
----
----
----
Yes
Yes
37
Undercurrent
----
Yes
Yes
Yes
----
Yes
87
Differential
----
----
----
----
----
Yes
87N
Ground differential
----
----
Yes
Yes
----
----
50BF
Breaker failure
----
Yes
Yes
Yes
Yes
Yes
46
Phase balance (negative sequence) current
Yes
Yes
Yes
Yes
Optional
Optional
67
Directional overcurrent
----
----
----
Yes
Yes
Yes
67N
Directional ground overcurrent
----
Optional
----
Yes
Yes
Yes
32
Directional (reverse) power
----
Optional
----
----
Yes
Yes
27/59
Under/over voltage
----
Optional
----
Yes
Yes
Yes
47
Phase rotation
----
Optional
----
Yes
Yes
Yes
81U/O
Over/under frequency
----
Optional
----
Yes
Yes
Yes
59N
Ground overvoltage
----
Optional
----
Yes
Yes
Yes
40
Under excitation (loss of field)
----
----
----
----
Optional
Yes
24
Over excitation (volts per hertz)
----
----
----
----
Yes
Yes
48/14
Incomplete sequence/underspeed
Yes
Yes
Optional
Yes
Optional
Optional
66
Restart inhibit
----
Yes
Optional
Yes
Optional
Yes
86
Lockout
----
Yes
Yes
Yes
Yes
Yes
38
RTD monitoring
----
Optional1
Optional1
Optional1
----
Optional1
----
I/O binary inputs/binary outputs
3/1
3/5
3/4
8/8
7/12
7/15
Footnote:
1.
20
Optional with up to five RTD inputs in protective relay (type 7SK80 only) or up to 12 RTDs using two type 7XV5662 RTD units.
Vacuum contactors
Type 97H3 360 A drawout vacuum
contactor
This vacuum contactor forms the
centerpiece for the medium-voltage
controller. It is a drawout assembly that
racks onto or off of the primary stabs in
the stationary housing. The supporting
base consists of a bolted steel frame. The
pushrods, contact support blocks and
other insulating parts are constructed of
glass polyester. All insulating material that
is in contact with high-voltage current
carrying parts is flame retardant and track
resistant.
The distinctive features of the Siemens
type 97H3 vacuum contactor is high
reliability, long service life, compact
dimensions and the ability to deal with
most motor switching duties. They are
suitable for loads of many types, including
motors, transformers, capacitors and
resistive loads.
In addition to the advantages of long
mechanical and electrical life with low
maintenance, the contacts are resistant to
adverse atmospheric environments and are
light in weight.
The vacuum contactor with single- or
double-barrel power fuses can be installed
in Series 81000 class E2 controllers of
either one-, two- or three-high
construction.
The type 97H3 drawout vacuum contactor
consists of:
A
low-voltage section containing the
main coil drive and auxiliary contacts
A
medium-voltage section housing the
vacuum interrupters
A
support structure providing mounting
for the power fuses, control
transformer and primary fuses and
drawout finger assemblies.
Since arc interruption is accomplished
completely within the vacuum interrupters,
arc chutes, blowout coils and pole plates
are not required. Stationary and movable
power contacts are located inside the
vacuum interrupters. A stainless steel
bellows attached to the movable contact
ensures a complete seal and vacuum
integrity. Because the contacts are sealed
in the vacuum interrupter and have only a
short stoke, long mechanical and electrical
life is achieved.
Figure 15: Type 97H3 360 A fused
vacuum controller - front view
Siemens type 97H3 series vacuum
contactor is mechanically interchangeable
with the previous type 94H3 series. The
type 96H3 series is mechanically
interchangeable with the previous type
93H3 series contactors.
Figure 16: Type 97H3 360 A fused
vacuum controller - rear view
21
Vacuum contactors
Type 96H6 720 A vacuum contactor
The type 96H6 720 A vacuum contactor
employs a similar philosophy to the
drawout type 97H3 360 A contactors,
except that only the primary currentlimiting fuses are mounted on the drawout
carriage. The vacuum contactor is
stationary mounted, connected to the load
stabs of the drawout cell with cables rated
for 720 A. The use of the drawout fuse
carriage preserves all of the advantages of
drawout construction.
Figure 17: Type 96H6 720 A
fuse carriage - front view
Test switch contact
development
Run
LSI
X
B
X
C
X
X1
CXFU
Test
A
115 V or 230 V CPT
Run
Push to test
C
L2
RL
Test
C B
X = Contacts closed
X2
C
12
L1
RSI
A
TFU
8
6
9
115 V or 230 V
test power
Stop 1
Start
2
OL
3
MR
MR 10 A 14 M 13 B
11
Figure 18: Type 96H6 720 A
fuse carriage - rear view
MR
15 F
A1
1 1
84 M 83 43 M 44 21 M 22 32 M 31
H
12
I
13 14
J
K
15 16
L
M
17 18
M
CC
2
D 13
2
M
CC
Additional auxiliary contacts
G
A2
DC drive unit
N
19
Legend:
CPT CXFU LSI M
MR M CC RL RSI TFU = Control power transformer
= Fuse for CPT secondary
= Line switch interlock
= Main vacuum contactor
= Master relay
= Main vacuum contactor magnet coil
= High-voltage light
= Racking switch interlock
= Fuse for test power
Figure 19: Typical control schematic for FVNR squirrel-cage controller
22
Vacuum contactors
Table 15: Operating data for type 97H3 vacuum contactor
Item
Magnetically held
Latched
Rated voltage
7,200 V
7,200 V
Rated current
360 A
360 A
Permissible switching frequency
1,200/hour
60/hour
Mechanical life (number of operations)
1,000,000
100,000 (latch mechanism);
1,000,000 contactor
Electrical life (number of operations)
250,000
100,000 (latch mechanism);
250,000 contactor
Closing time
150 ms
150 ms
Minimum closing command duration
300 ms
Opening time
325 +/- 75 ms
Arcing time
10 to 20 ms
10 to 20 ms
Pick-up voltage AC or DC, nominal
85% rated (hot); 70% rated (cold)
85% rated (hot); 70% rated (cold)
Drop-out voltage AC or DC, nominal
74 +/- 2 V
----
Minimum trip voltage
----
85% rated voltage
Rated control voltage
115 to 240 V (50/60 Hz); 125 to 250 Vdc
115 to 240 V (50/60 Hz); 125 to 250 Vdc
Coil circuit inrush
600 W
600 W
Coil circuit holding
90 W
----
Tripping (latched opening release)
----
500 W
Auxiliary contact arrangement
2 NO + 2 NC
2 NO + 2 NC
Auxiliary contact rating
10 A, 600 V (NEMA class A600)
10 A, 600 V (NEMA class A600)
2
300 ms
3
> 45 ms
Continuous current
10 A
10 A
AC making/breaking
7,200 VA not over 60 A/
720 VA not over 6 A
7,200 VA not over 60 A/
720 VA not over 6 A
DC making/breaking
10 A@24 V; 5 A@110 V; 0.9 A@125 V
10 A@24 V; 5 A@110 V; 0.9 A@125 V
Maximum interrupting current
(three operations)
5,000 A@5 kV; 4,200 A@7.2 kV
5,000 A@5 kV; 4,200 A@7.2 kV
Short-time current (rms)
30 seconds
2,160 A
1 second
5,400 A
5,400 A
Standard service altitude
200 m below to 1,000 m above sea level
200 m below to 1,000 m above sea level
Optional service altitude
4,500 m1
4,500 m1
BIL
60 kV5
60 kV5
Dielectric strength (60 Hz)
4
4
Control voltages AC and DC
120/240 Vac and 125/250 Vdc
120/240 Vac and 125/250 Vdc
Control voltage options
(latched opening release)
----
24 Vdc; 32 Vdc; 48 Vdc; 125 Vdc; 250 Vac;
115 Vac; 240 Vac
Footnotes:
1.
2,160 A
2.
High-altitude vacuum contactor required for
altitude over 1,000 m. Maximum altitude
4,500 m.
O
pening time = time from instant of application
of the OPEN control pulse to the instant of
contact separation.
3.
F
ast dropout option available.
4.
2
.0 kV + (2.25 x rated voltage) = 18.2 kV for
7.2 kV rated voltage.
5.
Phase-ground and phase-phase,
with vacuum contactor closed.
23
Vacuum contactors
Table 16: Operating data for type 96H6 vacuum contactor
Item
Magnetically held
Latched
Rated voltage
7,200 V
7,200 V
Rated current
720 A
720 A
Permissible switching frequency
600/hour
300/hour
Mechanical life (number of operations)
1,000,000
200,000
Electrical life (number of operations)
200,000
200,000
Closing time
60 to 70 ms
60 to 70 ms
Minimum closing command duration
300 ms
300 ms
Opening time
30 to 35 ms
30 to 35 ms
Arcing time
10 ms or less
10 ms or less
Pick-up voltage AC or DC, nominal
85% rated (hot); 70% rated (cold)
85% rated (hot); 70% rated (cold)
Drop-out voltage AC or DC, nominal
50% rated (hot); 40% rated (cold)
----
Minimum trip voltage
----
85% rated voltage
Rated control voltage
115 to 240 V (50/60 Hz); 125 to 250 Vdc
115 to 240 V (50/60 Hz); 125 to 250 Vdc
Coil circuit inrush
800 VA
875 W
Coil circuit holding
48 VA
----
Tripping (latched opening release)
----
600 W
Auxiliary contact arrangement
3 NO + 3 NC
3 NO + 3 NC
Auxiliary contact rating
10 A, 600 V (NEMA class A600)
10 A, 600 V (NEMA class A600)
4
Continuous current
10 A
10 A
AC making/breaking
7,200 VA not over 60 A/
720 VA not over 6 A
7,200 VA not over 60 A/
720 VA not over 6 A
DC making/breaking
60 W (L/R 150 ms)
60 W (L/R 150 ms)
Maximum interrupting current
(three operations)
7,200 A
7,200 A
Short-time current (rms)
30 seconds
4,320 A
4,320 A
1 second
10,800 A
10,800 A
Standard service altitude
<1,000 m
<1,000 m
Optional service altitude
2
2
BIL
60 kV3
60 kV3
Dielectric strength (60 Hz)
1
1
Control voltages AC and DC
115/240 Vac; 125/250 Vdc
115/240 Vac; 125/250 Vdc
Control voltage options
(latched opening release)
----
24 Vdc; 32 Vdc; 48 Vdc; 125 Vdc; 250 Vac
Footnotes:
1.
2.
24
2
.0 kV + (2.25 x rated voltage) = 18.2 kV for
7.2 kV rated voltage.
C
onsult factory.
3.
Phase-ground and phase-phase, with vacuum
4.
Opening time = time from instant of application
contactor closed.
of the OPEN control pulse to the instant of
contact separation.
Vacuum contactors
Table 17: Operating data for type 3TL714 vacuum contactor
Item
Magnetically held
Rated voltage
13,800 V
Rated current
300 A
Permissible switching frequency
60/hour
Mechanical life (number of operations)
1,000,000
Electrical life (number of operations)
500,000
Closing time
40 to 60 ms
Minimum closing command duration
300 ms
Opening time
<100 ms
Arcing time
11 ms or less
Pick-up voltage AC or DC, nominal
85% rated (hot); 70% rated (cold)
Drop-out voltage AC or DC, nominal
<70% E
Rated control voltage
115 to 240 V (50/60 Hz); 125 to 250 Vdc
Coil circuit inrush
1,200 W
Coil circuit holding
200 W
Tripping (latched opening release)
----
2
Auxiliary contact arrangement
4 NO + 4 NC; 6 NO + 6 NC; 8 NO + 8 NC
Auxiliary contact rating
10 A, 600 V (NEMA class A600)
Continuous current
10 A
Switching ratings (ac) (AC-11)
10 A@48 V; 9 A@60 V; 5 A@110 V; 2.5 A@220 V
Switching ratings (dc) (DC-11)
10 A@24 V; 9 A@48 V; 7 A@60 V; 4 A@110 V; 2 A@220 V
Maximum interrupting current (three operations)
3,000
Short-time current (rms)
30 seconds
4,800 A
1 second
8 kA
Standard service altitude
50 m below to 1,000 m above sea level
Optional service altitude
4,500 m1
BIL
95 kV5
Dielectric strength (60 Hz)
3
Control voltages AC and DC
120/240 Vac; 125/220 Vdc
Control voltage options (latched opening release)
----
Footnotes:
1.
altitude over 1,000 m. Maximum altitude
4,500 m.
2.
3.
2
.0 kV + (2.25 x rated voltage) = 33.0 kV for
13.8 kV rated voltage.
4.
V
acuum contactor only. Ratings for installation
are determined by fuses.
5.
P
hase-ground and phase-phase, with vacuum
contactor closed.
High-altitude vacuum contactor required for
Opening time = time from instant of application
of the OPEN control pulse to the instant of
contact separation.
25
Fuse applications
For non-motor loads
Current
Wave of available symmetrical short-circuit current
Ip = letthrough
current
Fuse
melting
The principal application for ANSI "E" rated
fuses in Series 81000 controllers is for
non-rotating loads, such as transformer
feeders. The following tabulation may be
used for estimating the "E" rated fuse
appropriate for a particular three-phase
transformer application.
Fuse ratings higher or lower than those
listed in Table 18 may need to be
employed if the transformer has unusual
magnetizing (inrush) current
characteristics, or for proper coordination
with the secondary protective device (for
example, secondary fuse, low-voltage
circuit breaker trip device, overcurrent
relay, etc.). Transformer overload capability
may also have a bearing on fuse selection.
However, this table is accurate for most
typical transformer feeder applications.
Arcing
Figure 20: Current limiting effect
The "E" rated fuses have the same
interrupting current ratings as the type FM
or A720R "R" rated fuses. Both are rated at
50 kA symmetrical and 80 kA asymmetrical
interrupting. High continuous current
fuses (for instance, 600E through 1350E)
are type CLE-750, and interrupting current
is 31.5 kA to 40 kA depending on fuse size.
All medium-voltage controllers employ
current-limiting fuses for short-circuit
protection. The term "current limiting" is
derived from the operating characteristics
of the fuse. Figure 20 shows graphically
how, for maximum fault levels, the fuse
operates within the first one-quarter cycle
of short-circuit current. This limits the
energy "let thru" well below peak values,
thus providing "current limitation."
The type 3TL71 vacuum contactor is
intended for motor applications and is not
available in a mechanically latched version.
Therefore, transformer protection fuses for
this contactor are not shown in Tables 1819.
26
Fuse applications
Table 18: Typical fuse sizes for transformer protection
Footnote:
Transformer
Fuse size1
kVA
three-phase
2.4 kV
4.16 kV
4.8 kV
6.9 kV
45
25E
10E
10E
----
75
30E
15E
15E
10E
112.5
40E
20E
20E
15E
150
50E
30E
25E
20E
225
80E
40E
40E
25E
300
100E
65E
50E
40E
500
200E
100E
80E
65E
750
250E
150E
125E
100E
1,000
400E
200E
200E
125E
1,500
450E
300E
250E
200E
2,000
----
400E
350E
----2
2,500
----
----
450E
----2
3,000
----
----
450E
----2
1.
Fuse sizes are based on 133
percent overload capacity, except
1,500 kVA at 2.4 kV, 2,500 kVA at
4.16 kV and 3,000 kVA at 4.8 kV.
2.
Consult factory.
Table 19: Typical fuse sizes for motor protection
Maximum
Current
design voltage designation
kV
Continuous
current
at 40 °C
Minimum
interrupting
capability
Interrupting
rating
50/60 Hz
5,080
2R (one barrel)
70
190
3R
100
225
4R
130
330
6R
170
500
9R
200
740
Single-phase
80 kA rms
asymmetrical
(210 MVA at
2.4 kV;
415 MVA at
4.8 kV)
12R
230
955
18R (two barrel)
390
1,440
24R
450
1,910
38R
600
3,000
57X (three barrel)
900
4,500
2R (one barrel)
70
190
3R
100
225
4R
130
330
6R
170
500
9R
200
740
12R
230
955
18R (two barrel)
390
1,440
24R
450
1,910
38R
600
3,000
48X
750
3,500
57X
900
4,500
7,200
Single-phase
80 kA rms
asymmetrical
(620 MVA at
7.2 kV)
27
Fuse applications
Type FM or A720 fuses
Type FM or A720R fuses consist of a
number of silver or copper elements
surrounded by inorganics and enclosed in
a durable synthetic insulating tube. Silverplated copper ferrules form the conductive
"cap" at each end of the fuse.
A mechanical indicator “pops-out” of the
end of the ferrule if the fuse has operated.
This provides a visual means for checking
the condition of the fuse, and also acts to
engage the optional blown fuse trip bar on
the type 97H3 contactor.
Figure 21: Type FM fuses installed
on a type 97H3 vacuum contactor
Current designations 2R through 24R (38R
and 57X for fuses on 720 A) are used to
distinguish one fuse size from another
within the same voltage rating. Ampere
ratings are not used to identify mediumvoltage fuses, since fuse selection involves
many different variables. Among these are
motor-locked rotor and running current,
acceleration time and the time-current
characteristics of the overload relay used.
The fuses are installed on the top of the
type 97H3 vacuum contactor or on the
drawout fuse carriage used with the
type 96H6 vacuum contactor. No fuse
pullers or special tools are required to
install or replace the fuses.
Starter fuse and current transformer
(CT) information
Typical information on starter fuse and CT
ratings is shown in Table 20. This
information is based on typical motor data
(NEMA B, Code F, 1.0 SF). Actual motor
data may vary depending on motor
manufacturer and design.
Actual fuse and CT ratings will be sized
based on motor FLA, service factor,
acceleration time and locked rotor
information. Actual motor data is required
for order entry.
Power factor correction capacitors
(PFCCs) (optional)
PFCCs are available for installation in the
Series 81000 controllers. Addition of PFCCs
requires one-high design of starters. When
PFCCs are provided, they are normally
switched on and off with the motor with
the exception of solid-state controllers.
Solid-state, reduced-voltage (SSRV)
controllers require the addition of a
separate switching contactor to switch the
capacitors on after the bypass vacuum
contactor has been energized. This
requires an additional 24" (610 mm) wide
section per SSRV. The optional PFCC
switching contactor is available for other
starter types as well.
PFCCs are provided in three-phase sets
complete with primary fuses. Sizes range
from 25 kVAr to 300 kVAr.
Complete motor data has to be provided
for PFCC sizing, and the maximum
allowable PFCC size has to be confirmed by
the motor manufacturer.
28
Fuse applications
Table 20: NEMA design B motor characteristics4
HP3
2.3 kV1
4.16 kV1
6.9 kV1
13.2 kV1
FLA2
Fuse
size5
CT
ratio
FLA2
Fuse
size5
CT
ratio
FLA2
Fuse
size
CT
ratio
FLA2
Fuse
size5
CT
ratio
60
16.5
2R
25:5
----
----
----
----
----
----
----
----
----
75
19.7
2R
25:5
----
----
----
----
----
----
----
----
----
100
25.8
2R
40:5
----
----
----
----
----
----
----
----
----
125
31.0
3R
50:5
----
----
----
----
----
----
----
----
----
150
36.6
3R
50:5
20.3
2R
40:5
----
----
----
----
----
----
200
47.3
4R
75:5
26.3
2R
40:5
15.9
2R
25:5
----
----
----
250
58.3
4R
100:5
32.3
3R
50:5
21.0
2R
30:5
----
----
----
300
69.6
6R
100:5
38.6
3R
75:5
24.5
2R
40:5
----
----
----
350
81.0
6R
150:5
44.9
4R
75:5
29.0
3R
40:5
----
----
----
400
91.1
9R
150:5
50.5
4R
75.5
32.5
3R
50:5
----
----
----
450
102
9R
150:5
56.5
4R
75.5
36.0
3R
50:5
----
----
----
500
113
9R
150:5
62.5
6R
100.5
40.0
3R
75:5
----
----
----
600
134
12R
200:5
74.6
6R
100:5
48.0
4R
75:5
----
----
----
700
156
12R
300:5
86.5
6R
150:5
56.0
4R
75:5
----
----
----
800
177
12R
300:5
98.3
9R
150:5
63.0
6R
100:5
----
----
----
900
199
18R
300:5
110
9R
150:5
67.5
6R
100:5
----
----
----
1,000
220
18R
300:5
122
12R
200:5
77
6R
100:5
40
80E
75:5
1,250
275
24R
400:5
152
12R
200:5
96
9R
150:5
50
100E
75:5
1,500
328
24R
600:5
182
12R
300:5
112
9R
150:5
60
125E
75:5
1,750
382
24R
600:5
212
18R
300:5
130
12R
200:5
70
125E
100:5
2,000
436
36R
800:5
241
18R
400:5
153
12R
200:5
80
150E
100:5
2,250
490
36R
800:5
271
24R
400:5
171
12R
250:5
90
150E
150:5
2,500
534
48X
800:5
300
24R
400:5
188
12R
250:5
100
200E
150:5
3,000
643
57X
1,000:5
359
24R
600:5
224
18R
300:5
120
200E
150:5
3,500
----
----
----
418
36R
600:5
262
24R
400:5
140
250E
200:5
4,000
----
----
----
477
36R
800:5
299
24R
400:5
160
250E
200:5
4,500
----
----
----
550
48X
800:5
316
38R
500:5
179
300E
250:5
5,000
----
----
----
611
57X
1,000:5
355
38R
500:5
199
300E
250:5
5,500
----
----
----
678
57X
1,000:5
395
47X
600:5
220
300E
300:5
Footnotes:
1.
2.
3.
4.
hree-phase, 60 Hz.
T
ull-load amperage is abbreviated FLA.
F
Horsepower is abbreviated HP.
Consult Siemens for motor sizes or voltages not
shown.
5.
Fuse sizes are based on enclosed continuous
current rating, one start from ambient, a coast
to stop and a second start.
29
Dimensions
Table 21: Floor plan dimensions in inches (mm)
A
B
C
D
E
F
G
H
90.0
(2,286)
36.0
(915)
32.8
(832)
31.0
(787)
21.9
(556)
1.1
(28)
4.7
(119)
2.1
(54)
I
J
K
L
M
N
O
P
34.9
(887)
10.1
(256)
6.1
(154)
4.4
(112)
3.5
(89)
2.9
(73)
29.5
(749)
68.5
(1,740)
Q
R1
S
T
U
V
W
X
32.5
(826)
10.0/13.0
(254)/
((330)
28.8
(731)
4.0
(102)
3.8
(95)
32.8
(832)
18.8
(478)
4.2
(106)
Footnote:
1.
3,000 main bus.
Figure 22: Typical floor plan details for class E2 medium-voltage controllers
Front view
Side view
Low-voltage
compartment
Horizontal
bus
A
B
C
Bus barrier
G
A
B
Rear
Front
B
A
B C
S
G
A
B
Front
Rear
B
30
Dimensions
Figure 23: Top view and typical floor plan with bus located in top compartment - dimensions in inches (mm)
B
I
B
J
K
N
.625 (16) diameter two holes
for sill anchor bolts when
required (one front, one rear)
E
D
P
E
L
Nominal rigid conduit size
4" (102) for control wires
For T1, T2 and T3 to middle
compartment
For T1, T2 and T3 to bottom
compartment
Nominal rigid conduit size
3" (76) for control wires
G
M
L
D
B
B
C
G
O
H
M
Center line of conduit
maximum
Q
Nominal rigid conduit size
4" (102) for control wires
For T1, T2 and T3 to bottom
compartment
For T1, T2 and T3 to middle
or L1, L2 and L3 to top
compartment
Nominal rigid conduit size
3" (76) for control wires
Center line of conduit
maximum
.625 (16) diameter four holes
for sill anchor bolts
Floor plan
Top view
Figure 24: Top view and typical floor plan with bus located in top-hat compartment - dimensions in inches (mm)
B
I
B
K
J
N
S
T
V
All conduits maximum
rigid size 3.5" (89) for
control wires
For T1, T2 and T3 to
middle compartment
For T1, T2 and T3 to
top compartment
P
T
Conduit for control wire
M
Q
For T1, T2 and T3 to
bottom compartment
W
D
B
B
V
X
X
X
.625 (16) diameter two holes
for sill anchor bolts when
required (one front, one rear)
Nominal rigid conduit size
3.5" (89)
For T1, T2 and T3 to bottom
compartment
For T1, T2 and T3 to middle
compartment
For T1, T2 and T3 to top
compartment
O
H
Nominal rigid conduit size
3" (76) for control wires
Center line of conduit
maximum
.625 (16) diameter four holes
for sill anchor bolts
Top view
Floor plan
31
Dimensions
Table 22: Dimensions and weights
Controller
Qty.
of
cont.7
Dimensions
in inches (mm)
Weight
in lbs (kg)
NEMA 1, 1A or 12
NEMA 3R
walk-in
NEMA 3R
non-walkin
Layout
NEMA 1 or
12
N3R
Type
Rating
Height
Width
Depth
Width
Width
Induction,
full-voltage,
nonreversing,
(FVNR)
drawout
5 kV 360 A
1
30 (762)
36 (915)
36 (915)
42 (1,067)
42 (1,067)
1,400 (635)
1,600 (726)
1
5 kV 720 A
1
36 (915)
36 (915)
36 (915)
42 (1,067)
42 (1,067)
1,600 (726)
1,800 (817)
2
7 kV 360 A
1
90 (2,286)
36 (915)
36 (915)
42 (1,067)
42 (1,067)
1,500 (681)
1,700 (772)
3/16
7 kV 720 A
1
90 (2,286)1
36 (915)
36 (915)
42 (1,067)
42 (1,067)
1,600 (726)
1,800 (817)
2
15 kV 360 A
1
90 (2,286)
126 (3,201)
48 (1,220)
----
----
5,000 (2,268)
5,700 (2,586)
29
5kV 360 A
2
90 (2,286)
60 (1,524)/
72 (1,829)
36 (915)
78 (1,982)
78 (1,982)
4,000 (1,815)/
6,800 (3,085)
4,400 (1,996)/
7,200 (3,266)
4
5 kV 720 A
2
90 (2,286)
96 (2,439)/
108 (2,744)
36 (915)
114 (2,896)
120 (3,048)
7,400 (3,357)/
8,800 (3,992)
7,800 (3,538)/
9,200 (4,173)
5
7 kV 360 A
2
90 (2,286)
72 (1,829)/
96 (2,439)
36 (915)
78 (1,982)/
114 (2,896)
120 (3,048)
4,600 (2,087)/
6,800 (3,085)
5,000 (2,268)/
7,800 (3,538)
6
7 kV 720 A
2
90 (2,286)
2
36 (915)
2
2
2
2
5
5kV 360 A
3
90 (2,286)
60 (1,524)/
72 (1,829)
36 (915)
78 (1,982)
78 (1,982)
4,200 (1,905)/
7,000 (3,175)
4,600 (2,087)/
7,400 (3,357)
7
5 kV 720 A
3
90 (2,286)
96 (2,439)/
108 (2,744)
36 (915)
114 (2,896)
120 (3,048)
7,600 (3,447)/
9,000 (4,082)
8,200 (3720)/
9,600 (4,355)
8
7 kV 360 A
3
90 (2,286)
72 (1,829)/
96 (2,439)
36 (915)
78 (1,982)/
114 (2,896)
120 (3,048)
4,800 (2,177)/
6,800 (3,084)
5,400 (2,449)/
8,200 (3,720)
9
7 kV 720 A
3
90 (2,286)
2
36 (915)
2
2
2
2
9
5 kV 360 A
3
90 (2,286)
36 (915)
36 (915)
42 (1,067)
42 (1,067)
1,800 (817)
2,000 (907)
10
5 kV 720 A
3
90 (2,286)
72 (1,829)
36 (915)
78 (1,982)
78 (1,982)
3,200 (1,452)
3,600 (1,633)
11
7 kV 360 A
3
90 (2,286)
36 (915)
36 (915)
42 (1,067)
42 (1,067)
2,000 (907)
2,200 (998)
12
7 kV 720 A
3
90 (2,286)
72 (1,829)
36 (915)
78 (1,982)
42 (1,067)
3,200 (1,452)
3,600 (1,633)
11
Synchronous, 5 kV 360 A
reducedvoltage,
5 kV 720 A
autotransformer,
non-reversing 7 kV 360 A
(RVATS)
3
90 (2,286)
84 (2,134)/
108 (2,744)
36 (915)
114 (2,896)
120 (3,048)
5,100 (2,313)/
7,900 (3,583)
5,700 (2,585)/
8,500 (3,856)
16
3
90 (2,286)
132 (3,353)/
144 (3,658)
36 (915)
150 (3,810)
156 (3,962)
8,500 (3,856)/
9,900 (4,491)
9,300 (4,218)/
10,700 (4,853)
17
3
90 (2,286)
132 (3,353)
36 (915)
150 (3,810)
156 (3,962)
5,700 (2,585)/
7,900 (3,583)
6,500 (2,948)/
9,300 (4,218)
16
3
90 (2,286)
2
36 (915)
2
2
2
2
17
Reducedvoltage,
primary
reactor,
nonreversing,
(RVPR)
drawout
Reducedvoltage,
autotransformer,
nonreversing,
(RVAT)
drawout
Induction,
full-voltage,
nonreversing,
(FVNR)
drawout
7 kV 720 A
32
1
Dimensions
Table 22: Dimensions and weights (continued)
Controller
Qty.
of
cont.7
Dimensions
in inches (mm)
NEMA 1, 1A or 12
NEMA 1 or
12
N3R
Rating
Height
Width
Depth
Width
Width
5 kV 360 A
3
90 (2,286)
36 (915)
36 (915)
42 (1,067)
42 (1,067)
2,000 (907)
2,200 (998)
21
5 kV 720 A
3
90 (2,286)
2
36 (915)
2
2
2
2
22
7 kV 360 A
3
90 (2,286)
72 (1,829)
36 (915)
78 (1,982)
78 (1,982)
3,300 (1,497)
3,700 (1,678)
23
7 kV 720 A
3
90 (2,286)
2
36 (915)
2
2
2
2
22
Induction,
full-voltage,
two-speed,
two-winding,
(2S2W)
drawout
5 kV 360 A
2
90 (2,286)
36 (915)
36 (915)
42 (1,067)
42 (1,067)
1,800 (817)
2,000 (907)
18
5 kV 720 A
2
90 (2,286)
72 (1,829)
36 (915)
78 (1,982)
78 (1,982)
3,200 (1,452)
3,600 (1,633)
19
7 kV 360 A
2
90 (2,286)
72 (1,829)
36 (915)
78 (1,982)
78 (1,982)
3,000 (1,361)
3,400 (1,542)
20
7 kV 720 A
2
90 (2,286)
72 (1,829)
36 (915)
78 (1,982)
78 (1,982)
3,200 (1,452)
3,600 (1,633)
19
Latched
contactor,
drawout
5 kV 360 A
1
30 (762)
36 (915)
36 (915)
42 (1,067)
42 (1,067)
1,400 (635)
1,600 (726)
1
5 kV 720 A
1
90 (2,286)
36 (915)
36 (915)
42 (1,067)
42 (1,067)
1,600 (726)
1,800 (817)
2
7 kV 360 A
1
90 (2,286)
36 (915)
36 (915)
42 (1,067)
42 (1,067)
1,500 (681)
1,700 (772)
3
7 kV 720 A
1
90 (2,286)
36 (915)
36 (915)
42 (1,067)
42 (1,067)
1,700 (771)
1,900 (862)
2
5 kV 360 A
2
90 (2,286)
36 (915)
36 (915)
42 (1,067)
42 (1,067)
1,600 (726)
1,800 (817)
24
5 kV 720 A
2
90 (2,286)
72 (1,829)
36 (915)
78 (1,982)
78 (1,982)
3,200 (1,452)
3,600 (1,633)
25
7 kV 360 A
2
90 (2,286)
72 (1,829)
36 (915)
78 (1,982)
78 (1,982)
3,200 (1,452)
3,600 (1,633)
25
7 kV 720 A
2
90 (2,286)
2
36 (915)
2
2
2
2
25
15 kV 300 A
2
90 (2,286)
96 (2,438)
66 (1,677)
----
----
5,000 (2,268)
----
30
LBS8 600 A or
1,200 A
unfused
5 kV/7 kV
----
90 (2,286)
36 (915)
36 (915)
42 (1,067)
42 (1,067)
1,400 (635)
1,600 (726)
26
LBS8 600 A
fused or
1,200 A/
900E fused
5 kV/7 kV
----
90 (2,286)
36 (915)
36 (915)
42 (1,067)
42 (1,067)
1,400 (635)
1,600 (726)
26
LBS8
1,200 A/
1,100E fused
5 kV/7 kV
----
90 (2,286)
72 (1,829)
36 (915)
78 (1,982)
78 (1,982)
2,200 (998)
2,600 (1,179)
27
Incoming
line/main
lugs only
5 kV/7 kV
----
90 (2,286)
18 (457)/
24 (610)/
36 (915)
36 (915)
42 (1,067)
42 (1,067)
600 (272)
1,400 (635)
28
Also available in 45" (1,143 mm) high
construction for two-high arrangement and
requires top-mounted bus. Consult factory.
3.
NEMA 3R
nonwalk-in5
Type
Footnotes:
2.
NEMA 3R
walk-in4
Layout
Induction,
full-voltage,
two-speed,
one-winding,
(2S1W)
drawout
Solid-state,
reducedvoltage,
non-reversing
(SSRV)
drawout
1.
Weight
in lbs (kg)
Consult factory.
Weight of drawout carriage is approximately
4.
5
6.
7.
8
eight is 107" (2,718 mm).
H
Height is 103" (2,616 mm).
estricted to 7 kV cable rating only.
R
Number of vacuum contactors.
Load-break switch.
200 lbs (91 kg).
33
Typical layout
arrangements1,3,4,5,6,7
Figure 25: Typical layout arrangements
Drawout
vacuum
contactor or
low-voltage
compartment2
Low-voltage
compartment
Drawout
vacuum
contactor or
low-voltage
compartment
Stationary
main vacuum
contactor
Drawout
vacuum
contactor or
low-voltage
compartment
Drawout fuse
carriage
Layout 1 FVNR
5 kV 360 A and 7 kV 360 A8
Stationary
run vacuum
contactor
Current
transformer
Layout 2 FVNR
5 kV 720 A and 7 kV 720 A
Low-voltage
compartment
Stationary
run vacuum
contactor
Low-voltage
compartment
Drawout
main vacuum
contactor
Reactor
Drawout
main vacuum
contactor
Layout 3 FVNR
7 kV 360 A
Low-voltage
compartment
Low-voltage
compartment
Low-voltage
compartment
Stationary
main vacuum
contactor
Stationary
run vacuum
contactor
Stationary
start and run
vacuum
contactors
Reactor
Layout 5 RVPR
5 kV 720 A and 7 kV 720 A
Current
transformer
Stationary
run vacuum
contactor
Drawout
main vacuum
contactor
Layout 6 RVPR
7 kV 360 A
Layout 7 RVAT
7 kV 360 A
Low-voltage
compartment
Low-voltage
compartment
Stationary
main vacuum
contactor
Stationary
start and run
vacuum
contactors
Stationary
forward and
reverse
vacuum
contactors
Drawout
main vacuum
contactor
Drawout
main vacuum
contactor
Autotransformer
Drawout
fuse carriage
34
Drawout
main vacuum
contactor
Low-voltage
compartment
Autotransformer
Layout 8 RVAT
5 kV 720 A and 7 kV 720 A
Autotransformer
Reactor
Drawout
fuse carriage
Stationary
start vacuum
contactor
Layout 4 RVPR
5 kV 360 A
Layout 9 RVAT
7 kV 360 A
Layout 10 FVR
5 kV 360 A
Typical layout
arrangements1,3,4,5,6,7
Figure 25: Typical layout arrangements (continued)
Stationary
reverse
vacuum
contactor
Stationary
forward
vacuum
contactor
Low-voltage
compartment
Low-voltage
compartment
Stationary
main vacuum
contactor
Stationary
forward and
reverse
vacuum
contactor
Drawout
fuse carriage
Drawout
main vacuum
contactor
Layout 11 FVR
5 kV 720 A and 7 kV 720 A
Space for
field excitation
equipment
Layout 12 FVR
7 kV 360 A
Low-voltage
compartment
Space for
field excitation
equipment
Low-voltage
compartment
Drawout
main vacuum
contactor
Layout 13 FVNRS
5 kV 360 A
(Standard)
stationary
start and run
vacuum
contactors
Low-voltage
compartment
Stationary
main vacuum
contactor
Space for
field excitation
equipment
Drawout
main vacuum
contactor
Space for
field excitation
equipment
Autotransformer
Stationary
start vacuum
contactor
Space for
field excitation
equipment
Current
transformer
Layout 17 RVATS
5 kV 720 A and 7 kV 720 A
Layout 16 RVATS
5 kV 360 A and 7 kV 360 A
Layout 15 FVNRS
7 kV 360 A
Stationary
run vacuum
contactor
(Alternate)
stationary
start and run
vacuum
contactors
Drawout
main vacuum
contactor
Drawout fuse
carriage
Layout 14 FVNRS
5 kV 720 A and 7 kV 720 A
Low-voltage
compartment
Low-voltage
compartment
Low-voltage
compartment
Low-voltage
compartment
Low-voltage
compartment
Stationary
main vacuum
contactor
Drawout
slow-speed
vacuum
contactor
Stationary
slow-speed
vacuum
contactor
Stationary
fast-speed
vacuum
contactor
Drawout fuse
carriage
Drawout
fast-speed
vacuum
contactor
Drawout
fuse carriage
Drawout
fuse carriage
Autotransformer
Layout 18 2S2W
5 kV 360 A9
Layout 19 2S2W
5 kV 720 A and 7 kV 720 A9
35
Typical layout
arrangements1,3,4,5,6,7
Figure 25: Typical layout arrangements (continued)
Low-voltage
compartment
Drawout
fast-speed
vacuum
contactor
Layout 20 2S2W
7 kV 360 A9
Low-voltage
compartment
Drawout
slow-speed
vacuum
contactor
Stationary
fast-speed
vacuum
contactor
Stationary
slow-speed/
shorting
vacuum
contactor
Drawout
main vacuum
contactor
Layout 21 2S1W
5 kV 360 A
Consult factory
Drawout
vacuum
controller and
SSRV
Layout 23 2S1W
7 kV 360 A
Layout 24 SSRV
5 kV 360 A
LBS 600 A
fused/unfused
or 1,200 A
fused/unfused
(maximum
fuse size 900E
with fan
cooling)
Layout 26 LBS
fused or unfused
36
Consult factory
Fuses (1,100E)
Layout 27 LBS
1,200 A fused
Layout 22 2S1W
5 kV 720 A
SSRV
Drawout
main vacuum
contactor
Layout 25 SSRV
5 kV 720 A and 7 kV 360 A
LBS 1,200 A
Incoming line
Layout 28
Incoming line
Typical layout
arrangements1,3,4,5,6,7
Figure 25: Typical layout arrangements (continued)
Outgoing cable
Drawout fuse
carriage and
stationary
main vacuum
contactor
Incoming cable
Layout 29 FVNR
15 kV
SCR chassis
SCR chassis
Outgoing cables
Drawout fuse
carriage and
stationary
main and
bypass vacuum
contactors
Incoming
cables
Layout 30 SSRV
15 kV
Footnotes for layouts 1 through 30:
1.
Weights and dimensions of reactor and auto-
7.
Special metering and protective relaying: a
transformer controllers vary as motor size
wide variety of current- and voltage-sensing
RVPR = Reduced-voltage, primary reactor
increases.
protective relays, metering devices and similar
Metering and protective device space
equipment is available. Normally, the top one-
FVR = Full-voltage, reversing
requirements may require an addition of a
third of the structure will be devoted to a low-
FVNRS = Full-voltage, non-reversing,
90" (2286 mm) high x 24" (610 mm) or
voltage section housing these devices, and the
synchronous
36" (914 mm) wide x 36" (914 mm) deep
middle and lower cells will each house a FVNR
SSRV = Solid-state, reduced-voltage
auxiliary structure.
RVAT = Reduced-voltage, auto-transformer
LBS = Load-break switch
2.
3.
FVNR = Full-voltage, non-reversing
4.
5.
Surge protection consists of three-phase station
When upper cell is used for a drawout contactor,
class arresters and surge capacitors, and requires
horizontal main bus (if required) is mounted
a 24” (610 mm) wide auxiliary incoming line
on top of unit, adding 10" (254 mm) or 13"
section for mounting.
(330 mm) to the height of the indoor structure.
6.
controller.
8.
Layout 1 for 7kV FVNR restricted to 7 kV cables
only. For 15 kV outgoing cables, use Layout 3
arrangement.
9.
Without mechanical interlock.
Type 3EF1 surge limiters can be provided with
Choice of protective relays is limited. Consult
any controller with no effect on layout or
factory.
dimensions.
37
Standard controller
components
FVNR - Full-voltage, non-reversing,
squirrel-cage controller includes:
O
ne 360 A three-pole drawout vacuum
contactor
Three current-limiting power fuses
O
ne 0.75 kVA control transformer with
two primary and one secondary
current-limiting fuses
O
ne 360 A three-pole drawout vacuum
contactor
T
wo 360 A three-pole stationary
vacuum contactors (start/run)
Three current-limiting power fuses
O
ne master control relay (three NO and
one NC auxiliary contacts)
O
ne auto-transformer with 50, 65 and
80 percent voltage taps
One start/stop pushbutton
One automatic transfer timing relay
One three-phase ambient compensated
thermal overload relay
O
ne 0.75 kVA control transformer with
two primary and one secondary
current-limiting fuses
O
ne externally mounted overloaded
reset button
Three current transformers
One test switch and circuit
One vacuum contactor position
indicator light
One drawout (racking) mechanism.
FVR - Full-voltage, reversing, squirrelcage controller includes:
O
ne 360 A three-pole drawout vacuum
contactor
One start/stop pushbutton
O
ne master control relay (three NO and
one NC auxiliary contacts)
O
ne three-phase ambient compensated
thermal overload relay
One incomplete sequence relay
O
ne externally mounted overloaded
reset button
Three current transformers
One test switch and circuit
T
wo 360 A three-pole stationary
contactors (forward/reverse)
O
ne vacuum contactor position
indicator light
Three current-limiting power fuses
One drawout (racking) mechanism.
O
ne 0.75 kVA control transformer with
two primary and one secondary
current-limiting fuses
RVPRNR - Reduced-voltage, primary
reactor, non-reversing, squirrel-cage
controller
O
ne master control relay (three NO and
one NC auxiliary contacts)
O
ne 360 A three-pole drawout vacuum
contactor
One start/stop pushbutton
O
ne 360 A three-pole stationary
vacuum contactor (shorting)
O
ne three-phase ambient compensated
thermal overload relay
Three current-limiting power fuses
O
ne externally mounted overloaded
reset button
O
ne primary reactor with 50, 65 and 80
percent voltage taps
Three current transformers
One automatic transfer timing relay
One test switch and circuit
O
ne 0.75 kVA control transformer with
two primary and one secondary
current-limiting fuses
One vacuum contactor position
indicator light
One drawout (racking) mechanism.
38
RVATNR - Reduced-voltage, autotransformer, non-reversing, squirrelcage controller includes:
One start/stop pushbutton
Standard controller
components
O
ne master control relay (three NO and
one NC auxiliary contacts)
O
ne three-phase ambient compensated
thermal overload relay
One incomplete sequence relay
O
ne externally mounted overloaded
reset button
Three current transformers
FVNRS - Full-voltage, brushless
synchronous, non-reversing controller
includes:
O
ne 360 A three-pole drawout vacuum
contactor
T
wo 360 A three-pole stationary
vacuum contactors (start/run)
Three current-limiting power fuses
One test switch and circuit
O
ne auto-transformer with 50, 65 and
80 percent voltage taps
O
ne vacuum contactor position
indicator light
One automatic transfer timing relay
One drawout (racking) mechanism.
FVMLNR - Full-voltage, mechanically
latched, electrically tripped, nonreversing controller, fused includes:
O
ne 360 A three-pole drawout vacuum
contactor
Three current-limiting power fuses
O
ne 0.75 kVA control transformer with
two primary and one secondary
current-limiting fuses
One close pushbutton
One open pushbutton
O
ne master control relay (three NO and
one NC auxiliary contacts)
One three-phase overcurrent relay
O
ne manual trip external operator
button
O
ne 0.75 kVA control transformer with
two primary and one secondary
current-limiting fuses
One start/stop pushbutton
O
ne master control relay (three NO and
one NC auxiliary contacts)
O
ne three-phase ambient compensated
thermal overload relay
One incomplete sequence relay
O
ne externally mounted overloaded
reset button
Three current transformers
One test switch and circuit
O
ne vacuum contactor position
indicator light
One drawout (racking) mechanism.
Three current transformers
One test switch and circuit
O
ne vacuum contactor position
indicator light
One drawout (racking) mechanism.
39
Standard controller
components
SSRV - Solid-state, reduced-voltage, nonreversing, squirrel-cage controller
includes:
O
ne 360 A three-pole drawout main
vacuum contactor
U
ndercurrent (load loss) trip (10 to 90
percent of motor FLA, adjustable trip
delay)
O
ne 360 A three-pole fixed bypass
vacuum contactor
A
llowable restarts (0 to 10, adjustable
time inhibit)
T
hree current-limiting power fuses
mounted on wheeled drawout carriage
E
lectronic overload (inverse time, 75 to
150 percent of motor FLA; two-stage
programmable class 5 to 30)
O
ne 2 kVA control transformer with
two primary and one secondary
current-limiting fuses mounted on a
drawout carriage
E
lectronic shear pin (trips within one
cycle of setpoint)
One SCR power section
P
hase loss (one or more phases
missing)
O
ne door-mounted soft start liquid
crystal display (LCD) and keypad
P
hase sequence (phase sequence
incorrect)
Three current transformers
Shorted SCR (internal fault detected)
One three-phase voltage transformer
C
onnection error (internal fault/motor
connection)
One test switch and circuit
O
ne vacuum contactor position
indicator light
ne contactor carriage racking
O
mechanism.
The SCR logic control incorporates the
following standard protection, metering
and parameter adjustments:
Initial voltage (0 to 100 percent
nominal voltage), factory set at 20
percent
C
urrent limit (200 to 600 percent of
motor FLA), factory set at 350 percent
A
cceleration time (0 to 120 seconds),
factory set at 10 seconds
D
eceleration time (0 to 60 seconds),
factory set at 5 seconds
D
ecel-final torque (0 to 10 percent
sensitivity)
P
ump control (four closed-loop start
and stop curves)
P
ulse (kick) start (0.1 to 2.0
seconds@80 line voltage)
U
ndervoltage trip (70 to 90 percent,
adjustable trip delay)
40
O
vervoltage trip (110 to 125 percent,
adjustable trip delay 1 to 60 seconds)
S
tarter over temp (heatsink over
temperature)
Elapsed time meter
Maximum current
Starting time for last start
Total number of starts
Cause of last fault
Percentage of current at last trip
Total number of trips
R
S 485 with Modbus remote terminal
unit (RTU) protocol
Opto-isolated inputs
N
on-volatile memory for programming
and faults
Programmable in four languages.
Standard controller
components
Table 23: Remarks
41
Standard controller
components
Table 23 Remarks (continued)
42
Standard controller
components
Table 23: Remarks (continued)
43
Published by and copyright © 2010:
Siemens AG
Energy Sector
Freyeslebenstrasse 1
91058 Erlangen, Germany
Siemens Energy, Inc.
7000 Siemens Road
Wendell, North Carolina 27591 USA
For more information, contact
+1 (800) 347-6659
Order No. E50001-F710-A120-X-4A00
Printed in USA
TD 1219F BR 0410.5
All rights reserved.
Trademarks mentioned in this document
are the property of Siemens AG, its affiliates
or their respective owners.
Subject to change without prior notice.
The information in this document contains
general descriptions of the technical options
available, which may not apply in all cases.
The required technical options should therefore
be specified in the contract.
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