Instruction Bulletin
May 2001
Schneider Electric Egypt Services
Procedures for Startup and Commissioning
of Electrical Equipment
Procedures for Startup and Commissioning of Electrical Equipment
Table of Contents
TABLE OF CONTENTS
Bulletin No. 018IB0001R5/01
May 2001
SECTION 1—INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
SECTION 2—SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
SECTION 3—AC DRIVES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
SECTION 4—AIR SWITCHES: LOW VOLTAGE (BOLTED
PRESSURE, QMB, OR EQUAL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
SECTION 5—AIR SWITCHES: MEDIUM VOLTAGE,
METAL-ENCLOSED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
SECTION 6—AIR SWITCHES: HIGH AND MEDIUM VOLTAGE,
OPEN STYLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
SECTION 7—ANALOG METERING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
SECTION 8—BUSWAYS, METAL-ENCLOSED . . . . . . . . . . . . . . . . . . . . 14
SECTION 9—CABLES: LOW VOLTAGE AND MEDIUM VOLTAGE . . . 15
SECTION 10—CAPACITORS: POWER FACTOR CORRECTION . . . . . 16
SECTION 11—CIRCUIT BREAKERS: LOW VOLTAGE INSULATED
CASE/MOLDED CASE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
SECTION 12—CIRCUIT BREAKERS: LOW VOLTAGE POWER
(ANSI/IEEE C37.13) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
SECTION 13—CIRCUIT BREAKERS: MEDIUM VOLTAGE SF6 . . . . . . 22
SECTION 14—CIRCUIT BREAKERS: MEDIUM VOLTAGE
VACUUM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
SECTION 15—DIRECT CURRENT SYSTEMS: BATTERIES. . . . . . . . . 26
SECTION 16—EMERGENCY SYSTEMS: AUTOMATIC TRANSFER
SWITCHES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
SECTION 17—GROUND-FAULT PROTECTION SYSTEMS . . . . . . . . . 29
SECTION 18—GROUND RESISTORS . . . . . . . . . . . . . . . . . . . . . . . . . . 31
SECTION 19—GROUNDING SYSTEMS . . . . . . . . . . . . . . . . . . . . . . . . . 32
SECTION 20—ISOLATED POWER SYSTEMS . . . . . . . . . . . . . . . . . . . 33
SECTION 21—MOTOR CONTROL CENTERS: LOW AND
MEDIUM VOLTAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
SECTION 22—MOTOR STARTERS: LOW VOLTAGE . . . . . . . . . . . . . . 39
SECTION 23—MOTOR STARTERS: MEDIUM VOLTAGE . . . . . . . . . . . 40
SECTION 24—OIL SWITCHES: MEDIUM VOLTAGE . . . . . . . . . . . . . . . 42
SECTION 25—PROTECTIVE RELAYS . . . . . . . . . . . . . . . . . . . . . . . . . . 43
SECTION 26—STEP VOLTAGE REGULATORS . . . . . . . . . . . . . . . . . . 44
SECTION 27—SURGE ARRESTERS: LOW VOLTAGE SURGE
PROTECTION DEVICES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
SECTION 28—SURGE ARRESTERS: MEDIUM AND HIGH
VOLTAGE SURGE PROTECTION DEVICES . . . . . . . . . . . . . . . . . . . . . 47
SECTION 29— SWITCHGEAR AND SWITCHBOARD ASSEMBLIES:
LOW AND MEDIUM VOLTAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
SECTION 30—TRANSFORMERS: DRY TYPE: ALL VOLTAGES LARGE (GREATER THAN 167 SINGLE-PHASE AND 500KVA
THREE-PHASE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
2
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
Procedures for Startup and Commissioning of Electrical Equipment
List of Tables
SECTION 31—TRANSFORMERS: DRY TYPE - SMALL
(167KVA SINGLE-PHASE, 500KVA THREE-PHASE,
AND SMALLER) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
SECTION 32—TRANSFORMERS, INSTRUMENT . . . . . . . . . . . . . . . . . 53
SECTION 33—TRANSFORMERS: LIQUID-FILLED: ALL VOLTAGES . 55
LIST OF TABLES
Table 1:
Table 2:
Table 3:
Table 4:
Table 5:
Table 6:
Table 7:
Table 8:
© 2000-2001 Schneider Electric All Rights Reserved
US Standard Bolt Torques for Bus and Cable
Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Insulation-Resistance Test Voltage for Electrical
Apparatus and Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Transformer Insulation-Res. Acceptance Test Voltage
and Min. Results. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Insulation Resistance Conversion Factors . . . . . . . . . . . . . 60
Power Frequency Dielectric Withstand Test . . . . . . . . . . . 61
Instrument Transformer Dielectric Tests . . . . . . . . . . . . . . 62
Schneider Molded Case Circuit Breaker Watts
Loss/Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Schneider Type DS, DSII, DSL, and DSLII Circuit
Breaker Contact Resistance. . . . . . . . . . . . . . . . . . . . . . . . 66
3
Procedures for Startup and Commissioning of Electrical Equipment
Section 1—Introduction
SECTION 1—INTRODUCTION
Bulletin No. 018IB0001R5/01
May 2001
This bulletin details the inspection and testing procedures that Schneider
Services technicians must follow during commissioning and startup of
electrical equipment. These inspections and tests are performed on new
equipment, after installation and prior to energizing, in order to:
1. check that the equipment has not been damaged during shipment or
installation;
2. verify that the equipment is in compliance with the purchase specification
and design intent; and
3. document test results that can serve as benchmarks for future tests.
The standard deliverables to the customer are those inspections and tests
listed under subsections A, B, and D (Instrument Transformers only) of each
equipment’s startup procedures. Schneider technicians will perform the
optional tests listed in subsections C and E (Instrument Transformers only) if
specified by the customer at the time the order is received.
For testing of equipment not detailed in this document,Schneider Services
will refer to the InterNational Electrical Testing Association’s (NETA)
guidelines in Acceptance Testing Specifications for Electrical Power
Distribution Equipment and Systems (NETA ATS 1999).
For additional information, contact Schneider Services
Acknowledgement
4
Schneider Electric has been granted permission to publish insulation
resistance acceptance criteria as listed in the Acceptance Testing
Specifications for Electrical Power Distribution Equipment and
Systems (NETA ATS 1999) published by the International Electrical Testing
Association. Publication of data taken from this document may require
permission of Schneider Electric and InterNational Electrical Testing
Association.
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
SECTION 2—SAFETY
Procedures for Startup and Commissioning of Electrical Equipment
Section 2—Safety
Proper safety procedures shall be reviewed and implemented before each
activity listed in this procedure and the Schneider “Field Service
Safety, Health and Environmental Handbook.” Job Safety Analysis followed
by a toolbox/pre-job meeting shall be conducted prior to any activity listed in
this procedure. The toolbox meeting shall be documented and attached to
the FS101. Proper safety procedures as detailed in the Schneider
Electric “Field Services Safety, Health and Environmental Handbook”,
employee training, and customers requirements shall be implemented as
dictated by each sites requirements.
Services Employees are NOT authorized to work on live equipment. There
may be occasions in which you are taking measurements or checking
voltages within an energized enclosure, but you are NOT authorized to “do
Hands on Live” repairs!
Schneider does not typically perform shutdown and/or switching
operations, because these operations may result in damage to property or
persons downstream of the equipment as a result of conduct, errors, or
omissions made by others. If a customer requests Schneider to
perform such services, technicians must contact their District Manager for
approval and proper procedures.
Required personal protective equipment is detailed in the latest revision of
procedure SQDS-SHE-001. A copy of this procedure may be obtained from
the District Manager or from the Safety, Health, and Environment Manager.
© 2000-2001 Schneider Electric All Rights Reserved
5
Procedures for Startup and Commissioning of Electrical Equipment
Section 3—AC Drives
SECTION 3—AC DRIVES
Bulletin No. 018IB0001R5/01
May 2001
A. Physical Inspection
1. Document equipment nameplate data on the test report. Verify
equipment nameplate ratings are in accordance with the final approved
or record drawings and specifications.
2. Check for shipping damage: broken operators, switches, or pilot lights;
dented or bent enclosure structures.
3. Check for any loose assemblies, excessive dirt, dust, or moisture. Clean
up if necessary using a shop vacuum.
4. Tighten all power wiring connections to proper torque value. Check line
and load side connections of all disconnect switches, breakers,
contactors, and overloads.
5. Check for proper wire sizing per the manufacturer’s recommendations.
Check insulation integrity; tighten to the specified torque per the
manufacturer’s instructions.
6. Verify that a properly sized grounding conductor is connected to the drive
grounding lug and terminates on a ground lug in the power distribution
panel.
7. Verify that wires connected between the drive and the motor are correctly
sized per the manufacturer’s instructions. Verify that these wires are
separated from all other wiring (ideally in their own conduit). Note the
length of wire between the drive and the motor on the test report.
8. Tighten all control wiring connections to the proper torque value. Check
and tighten the drive control terminals. Check and tighten all terminal
block connections. Check for proper insulation strip length on customer
supplied control wiring.
9. Check door and disconnect switch alignment and opening/closing
operation.
10. Test all mechanical interlocking devices.
11. Manually operate all contactors to verify freedom of movement.
12. Verify that customer supplied fusing agrees with the manufacturer’s
recommendations.
13. Verify mechanical operation of isolation contactor. Tighten power and
control connections. Verify the proper coil voltage rating.
14. Verify that the options board is securely fastened and plug-in terminals
are present.
15. Check for proper heaters used in ISO/Bypass unit.
16. Verify that the location of the drive will not be allowed to be hotter than
100° F or colder than 32° F, and that no condensing moisture is present.
17. Verify the type of load: constant torque or variable torque (centrifugal
pumps and fans). Note the machine’s functional name on the test report.
18. Verify that the proper Torque Type is selected (i.e., Constant, Variable, or
Variable Low Noise).
B. Electrical Tests
The following tests involve the setup of the drive by using the programmable
menus in the drive. Supply single-phase power at the rated system voltage
level, +/-15, to the CL1 and CL2 terminals of the drive.
1. Set the Motor Nominal Current parameter to Motor nameplate Full Load
Amp (FLA) value.
2. Set the High Speed Parameter to 60 Hz, or the maximum setting intended
by the user.
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© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
Procedures for Startup and Commissioning of Electrical Equipment
Section 3—AC Drives
3. Set the Low Speed Parameter to 0 Hz, or the minimum setting intended
by the user.
4. Set the Acceleration parameter to approximately 20 seconds.
5. Set the Deceleration parameter to approximately 30 seconds.
6. Check the Input/Output Map assignments.
7. Set the keypad to display four table scroll.
8. Set Output Phase Fault parameter to “No.”
9. Operate the drive with no motor connected. Cycle the unit through several
Start and Stop sequences, ramping to full speed and to zero. (Use
Keypad Mode if no external Start/Stop or Speed control is available.)
10. Return Output Phase Fault parameter to “Yes.”
For the following tests, the equipment will be energized onto the power
distribution circuit by the means provided (i.e., disconnect switch) for the
drive. The connected motor will be “bumped” to verify proper rotating
direction using the drive as well as any bypass to line feature, if provided.
11. Measure the output of ac control transformers to be within +/-5% of
nominal output voltage. Measure dc control supplies (for customer use),
and verify that they are within the manufacturer’s recommendations.
12. Measure the dc bus voltage and verify that it is equal to the measured
RMS Line to Line input voltage x 1.414 +/-5%.
13. Measure the RMS values of Line to Line voltages: L1 to L2, L1 to L3, and
L2 to L3. Verify that they are 208, 230, or 460 Vac rms +/-10%. Phase to
Phase voltage imbalance must be less than +/-2%. Measure L1, L2, and
L3 to ground. Phase to ground voltage imbalance should be less than
+/-5%. Perform measurements in standby mode, medium motor load,
and full motor load.
14. Verify that phase rotation in Bypass mode is per the manufacturer’s
recommendations. If incorrect, swap any two line-side power wires at the
disconnecting switch.
15. Verify that phase rotation in AFC mode at approximately 10 Hz is per the
manufacturer’s recommendations. If incorrect, swap any two wires at the
“T lead” connections on the drive.
16. Measure Output voltages at the “T lead” terminals of the drive with no
motor connected (open circuit with output phase fail detection turned off)
and the drive running at half speed and again at full speed. Verify that
phase to phase output voltage imbalance is less than 2% at any output
frequency. Repeat with the motor connected and running at medium
motor load and again at full motor load.
17. Measure the motor current in each “T lead” at medium motor load and
again at full motor load. Output Phase Current imbalance must be less
than 5% at any load. Compare readings taken to displayed value of output
current on the Keypad. Note any discrepancies on the test report.
18. Verify that speed control signals vary within the voltage or current range
of the input to which they are connected. Check for proper shielding on
wires connected to speed control inputs. Verify that signals are isolated
from power wires.
19. Verify that I/O points are assigned to proper functions per factory
drawings.
20. Verify that Hand and Auto controls, Start, Stop, and speed input, operate
the drive correctly.
21. Check that all indicating lamps illuminate only for their assigned
functions. Check all Push to Test lamps.
© 2000-2001 Schneider Electric All Rights Reserved
7
Procedures for Startup and Commissioning of Electrical Equipment
Section 4—Air Switches: Low Voltage (Bolted Pressure, QMB, or Equal)
SECTION 4—AIR SWITCHES: LOW
VOLTAGE (BOLTED PRESSURE, QMB,
OR EQUAL)
Bulletin No. 018IB0001R5/01
May 2001
A. Visual and Mechanical Inspection
1. Document equipment nameplate data on test report. Verify equipment
nameplate ratings are in accordance with the final approved and record
drawings and specifications, if available.
2. Inspect physical and mechanical condition.
3. Confirm application of lubricants at manufacturer's recommended
locations.
4. Verify appropriate anchorage and required area clearances.
5. Verify appropriate equipment grounding.
6. Verify correct blade alignment, blade penetration, travel stops, and
mechanical operation.
7. Verify and record fuse sizes and types are in accordance with drawings
and short-circuit and coordination studies, if available.
8. Verify tightness of accessible bolted electrical connections by calibrated
torque-wrench method in accordance with manufacturer's published
data. If no manufacturer's data is available, use the values in Table 1 on
page 57.
9. Check all interlocking systems for correct operation and sequencing, and
key distribution, if applicable.
10. Verify correct phase barrier materials and installation.
11. Inspect all indicating and control devices for correct operation.
12. Check the condition of arc contacts and arc chutes.
B. Electrical Tests
NOTE: When performing dielectric tests, you must disconnect all Instrument
and Control Transformers, Arresters, TVSS units, and other sensitive
electronic equipment that may cause erroneous results or cause damage to
equipment that is not rated in accordance Panelboard industry standards.
Verify the proper selection and operation of the electrical test equipment.
Record the date of the last calibration date and the date re-calibration is due.
1. Perform insulation-resistance tests on each pole, phase-to-phase and
phase-to-ground with switch closed and across each open pole for one
minute. Test voltage shall be in accordance with manufacturer's published
data or Table 2 on page 59.
2. Switches equipped with solenoid trip, blown main fuse detector, etc., test
each feature for proper operation. To test blown fuse detector, activate it
and confirm by attempting to close the breaker without reset.
3. Sswitches, perform Blade Contact Resistance Test
(a) With the device de-energized, operate the device closed and open
several time using either manual or electrical means.
(b) Apply a minimum current of 100 amperes dc through the closed
contacts. If 100 A is not available, use the highest current available. If
the device does not conform to the manufacturer’s specification,
obtain equipment to perform the test at 100 A or consult the factory
with full information about the details of the test. If the continuous
current rating is less than 100 A, then test at a level not to exceed the
continuous current rating.
8
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
Procedures for Startup and Commissioning of Electrical Equipment
Section 4—Air Switches: Low Voltage (Bolted Pressure, QMB, or Equal)
(c) Measure the contact resistance of each pole and compare with the
following values:
BP Switch Rating
Resistance
800 Amp.
13 Micro-Ohms Max.
1200 Amp.
13 Micro-Ohms Max.
1600 Amp.
11 Micro-Ohms Max.
2000 Amp.
8 Micro-Ohms Max.
2500 Amp.
7 Micro-Ohms Max.
3000 Amp.
6 Micro-Ohms Max.
4000 Amp.
7 Micro-Ohms Max.
NOTE: Current Source Test Probes must be placed on extreme ends of
the Jaw Terminal and the Hinge/Fuse Pad with the Potential Measuring
Probes placed approximately one inch from each Current Source Test
Probe, on the inside between the Current Source Test Probes.
(d) If the resistances is below the value shown above, the condition of the
device contacts is considered suitable for service. If the resistance
exceeds the value above, open and close the device several more
times. If high readings persists, increase the DC test current to a level
equivalent to the continuous current rating of the device. Contact the
factory if nominal values of resistance cannot be achieved.
4. Measure fuse resistance to check continuity.
5. Test the ground fault relay by current injection to verify that the switch trips
at the proper setting.
6. Perform adjustments on the ground fault setting for final settings in
accordance with the coordination study supplied by the owner, if
applicable.
© 2000-2001 Schneider Electric All Rights Reserved
9
Procedures for Startup and Commissioning of Electrical Equipment
Section 5—Air Switches: Medium Voltage, Metal-Enclosed
SECTION 5—AIR SWITCHES: MEDIUM
VOLTAGE, METAL-ENCLOSED
Bulletin No. 018IB0001R5/01
May 2001
A. Visual and Mechanical Inspection
1. Document equipment nameplate data on test report. Verify equipment
nameplate ratings are in accordance with the final approved or record
drawings and specifications, if available.
2. Inspect physical and mechanical condition.
3. Confirm correct application of lubricants at manufacturer's recommended
locations.
4. Verify appropriate anchorage and required area clearances.
5. Verify appropriate equipment grounding.
6. Verify correct blade alignment, blade penetration, travel stops, and
mechanical operation. Check to make sure the interrupter blade for
type HVL switches securely latched with in the arc chute when
the switch closes. A properly latched interrupter blade will stay latched
within the arc chute until the main blades are about half way open in the
opening cycle.
7. Verify that fuse sizes and types are in accordance with drawings and
short-circuit and coordination studies, if available.
8. Inspect fuse holders for tightness and alignment.
9. Verify that expulsion-limiting devices are in place on all holders having
expulsion-type elements. Verify that they are installed to vent in the
proper direction.
10. Verify tightness of accessible bolted electrical connections by calibrated
torque-wrench method in accordance with manufacturer's published
data. If no manufacturer's data is available, use the values in Table 1 on
page 57.
11. Check all interlocking systems for correct operation and sequencing, and
key distribution, if applicable.
12. Verify correct phase-barrier materials and installation.
13. Inspect all indicating and control devices for correct operation.
14. Verify that the Lightning arresters have been connected, verify that they
have the proper voltage per the manufacturer’s drawings.
15. Inspect the linkage and gap adjustments on VISI-VACä switches to
confirm that a sealing compound has been applied and that the
adjustments are finger tight.
16. Check the condition of arc contacts and arc chutes.
B. Electrical Tests
NOTE: When performing dielectric tests, you must disconnect all Instrument
and Control Transformers, Arresters, TVSS units, and other sensitive
electronic equipment that may cause erroneous results or cause damage to
equipment that is not rated in accordance with Switchgear industry
standards.
Verify the proper selection and operation of the electrical test equipment.
Record the date of the last calibration date and the date re-calibration is due.
1. Perform insulation-resistance tests on each pole, phase-to-phase and
phase-to-ground with switch closed and across each open pole for one
minute. Test voltage shall be in accordance with manufacturer's published
data or Table 2 on page 59.
2. Perform a dielectric test (Hi-Pot) on each pole with switch closed. Test
each pole-to-ground with all other poles grounded. Test voltage shall be
in accordance with manufacturer's published data or Table 5 on page 61.
10
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
Procedures for Startup and Commissioning of Electrical Equipment
Section 5—Air Switches: Medium Voltage, Metal-Enclosed
3. Verify that heaters have been connected and is operating properly.
4. Measure fuse resistance to verify continuity.
5. Perform a contact-resistance test for HVL/cc and Visi-Vac
devices. Use the following procedure:
(a) With the device de-energized, operate the device closed and open
several times using either manual or electrical means.
(b) Apply a minimum current of 100 amperes dc through the closed
contacts. If 100 A is not available, use the highest current available. If
the device does not conform to the manufacturer’s specification,
obtain equipment to perform the test at 100 A or consult the factory
with full information about the details of the test. If the continuous
current rating is less than 100 A, then test at a level not to exceed the
continuous current rating.
(c) Measure the contact resistance of each pole and compare with the
following values:
VISI-VAC .............. 85 Micro-Ohms
HVL/cc ................. 75 Micro-Ohms
HVL .....................no value available
(d) If the resistance is below the value shown above, the condition of the
device contacts is considered suitable for service. If the resistance
exceeds the value above, open and close the device several more
times. If high readings persist, increase the dc test current to a level
equivalent to the continuous current rating of the device. Contact the
factory if nominal values of resistance cannot be achieved.
C. Optional Tests
Check the erosion gap of VISI-VAC vacuum bottles per the manufacturer’s
instructionsAdjust
.
as necessary to meet specified gaps.
© 2000-2001 Schneider Electric All Rights Reserved
11
Procedures for Startup and Commissioning of Electrical Equipment
Section 6—Air Switches: High and Medium Voltage, Open Style
SECTION 6—AIR SWITCHES: HIGH AND
MEDIUM VOLTAGE, OPEN STYLE
Bulletin No. 018IB0001R5/01
May 2001
A. Visual and Mechanical Inspection
1. Document equipment nameplate data on test report. Verify equipment
nameplate ratings are in accordance with the final approved or record
drawings and specifications, if available.
2. Inspect physical and mechanical condition.
3. Confirm correct application of lubricants at manufacturer's recommended
locations.
4. Verify that grounding is in accordance with industry standards and project
specifications.
5. Verify tightness of accessible bolted electrical connections by calibrated
torque-wrench method in accordance with manufacturer's published
data. If no manufacturer's data is available, use the values in Table 1 on
page 57.
6. Perform mechanical operator tests in accordance with manufacturer's
instructions.
7. Verify correct operation and adjustment of motor operator limit-switches
and mechanical interlocks.
8. Verify correct blade alignment, blade penetration, travel stops, arc
interrupter operation, and mechanical operation (over toggle).
9. Inspect fuse holders for tightness and alignment.
10. Check the condition of arc contacts and arc chutes.
B. Electrical Tests
NOTE: When performing dielectric tests, you must disconnect all Instrument
and Control Transformers, Arresters, TVSS units, and other sensitive
electronic equipment that may cause erroneous results or cause damage to
equipment that is not rated in accordance with Switchgear industry
standards.
Verify the proper selection and operation of the electrical test equipment.
Record the date of the last calibration date and the date re-calibration is due.
1. Perform insulation-resistance tests on each pole, phase-to-phase and
phase-to-ground with switch closed and across each open pole for one
minute. Test voltage should be in accordance with manufacturer's
published data or Table 2 on page 59.
2. Perform a dielectric test (Hi-Pot) on each pole with switch closed. Test
each pole-to-ground with all other poles grounded. Test voltage shall be
in accordance with manufacturer's published data or Table 5 on page 61.
3. Perform a contact-resistance test across each switchblade and fuse
holder. Investigate any value exceeding 500 micro-ohms, or any values
that deviate from adjacent poles or similar switches by more than 25
percent.
12
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
SECTION 7—ANALOG METERING
Procedures for Startup and Commissioning of Electrical Equipment
Section 7—Analog Metering
A. Visual and Mechanical Inspection
1. Document equipment nameplate data on test report. Verify equipment
nameplate ratings are in accordance with the final approved or record
drawings and specifications, if available.
2. Inspect physical and mechanical condition.
3. Verify tightness of electrical connections.
4. Verify mechanically for freedom of movement, correct travel and
alignment, and tightness of mounting hardware.
B. Electrical Tests
Verify the proper selection and operation of the electrical test equipment.
Record the date of the last calibration date and the date re-calibration is due.
1. Check calibration of meters according to the manufacturer’s published
data.
2. Electrically confirm that current transformer and voltage transformer
secondary circuits are intact.
C. Optional Tests
1. Calibrate watt-hour meters according to manufacturer's published data.
2. Verify all instrument multipliers.
© 2000-2001 Schneider Electric All Rights Reserved
13
Procedures for Startup and Commissioning of Electrical Equipment
Section 8—Busways, Metal-Enclosed
SECTION 8—BUSWAYS, METALENCLOSED
Bulletin No. 018IB0001R5/01
May 2001
A. Visual and Mechanical Inspection
1. Document equipment nameplate data on test report. Verify busway
nameplate ratings in accordance with final approved or record drawings
and specifications, if available.
2. Inspect the busway for physical damage and correct connection in
accordance with the single-line diagram.
3. Inspect for appropriate bracing, suspension, alignment, and enclosure
ground.
4. Using the calibrated torque-wrench method, verify that the tightness of
accessible bolted electrical connections is in accordance with the
manufacturer's published data. If no manufacturer's data is available, use
the values in Table 1 on page 57. For Square D, Low Voltage, I-Line
Busway, check to see that the outer head has been broken off. Verify that
the red plastic disk (VISI-TITEâ) at each bus joint is automatically
removed when the head is broken off.
5. To ensure adequate cooling, confirm that the physical orientation is in
accordance with manufacturer's labels.
6. Examine the outdoor busway for removal of “weep-hole” plugs, if
applicable, and the correct installation of joint shield. Verify that proper
gasketing is in place.
B. Electrical Tests
Verify the proper selection and operation of the electrical test equipment.
Record the date of the last calibration date and the date re-calibration is due.
1. Measure insulation resistance of each busway, phase-to-phase and
phase-to-ground for one minute, in accordance with Table 2 on page 59.
For Square D, Low Voltage, I-Line busway, with the load and line ends
disconnected, and no overcurrent devices installed, use an insulation
resistance tester rated at 1000 volts to ensure the system is free from
short circuits and grounds (phase-to-phase, phase-to-neutral, and
phase-to-ground). The megohm readings should not be less than the
value calculated from the following formula. (If readings are less than the
values calculated from the formula consider drying the air with in the
building for at least a day and then remeasure. If low readings persist,
contact the factory.)
Megohms = 100 / length of run (in feet) or Megohms = 30.5 / length of run
(in meters)
2. Visual confirmation of correct phasing on each busway tie section
energized by separate sources. (De-energized)
C. Optional Tests
1. Perform contact-resistance test on each connection point of non
insulated busway. On insulated busway, measure resistance of
assembled busway sections and compare values with adjacent phases.
2. Perform a dielectric test (Hi-Pot) on each busway, phase-to-ground with
phases not under test grounded, in accordance with manufacturer's
published data. Apply test voltage for one minute. Use test voltage values
as shown in Table 5 on page 61.
14
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
SECTION 9—CABLES: LOW VOLTAGE
AND MEDIUM VOLTAGE
Procedures for Startup and Commissioning of Electrical Equipment
Section 9—Cables: Low Voltage and Medium Voltage
A. Visual and Mechanical Inspection
1. Verify that cable sizing and insulation temperature rating are in
accordance with final approved or record drawings and specifications, if
available. Note any deviations.
2. Inspect the exposed sections of cables for physical damage and correct
connection in accordance with single-line diagrams.
3. Using a calibrated torque wrench, verify that the tightness of accessible
bolted connections is in accordance with the manufacturer's published
data. If no manufacturer's data is available, use the values in Table 1 on
page 57.
4. Inspect compression-applied connectors for correct cable match and
indentation.
5. Verify cable color coding with applicable engineer's specifications.
B. Electrical Tests
NOTE: When performing dielectric tests, you must disconnect all Instrument
and Control Transformers, Arresters, TVSS units, and other sensitive
electronic equipment that may cause erroneous results or cause damage to
equipment that is not rated in accordance industry standards.
Verify that the opposite end of the cable run being tested is isolated form
personnel during testing. Verify that the electrical test equipment is correctly
selected and operates properly. Record the date of the last calibration date
and the date re-calibration is due.
1. Cables and leads shall be tested for continuity to ensure correct cable
connection and phasing rotation.
2. Perform an insulation resistance test on each conductor between one
conductor and ground with the other conductors grounded. Each
conductor shall be tested in the same manner.
(a) The test shall be performed at 1000 volts dc for one minute.
(b) Each 480V feeder cable shall be tested with the cable connected to
the racked-in but open breaker or switch at the equipment. Connection
at the other end of each of these cables shall be as follows:
(i) Cables to Motor Control Centers shall be connected to the bus with
the switches or breakers in the starters open.
(ii) Cables to motors and other equipment shall be connected to the
motors and equipment with feeder switches open.
C. Optional Test
Perform a dielectric test on medium voltage shielded cable per Table 5 on
page 61. Refer to the manufacturer’s published data, and perform at 5 KV
intervals, checking leakage current and decay voltage over the specified time
period.
© 2000-2001 Schneider Electric All Rights Reserved
15
Procedures for Startup and Commissioning of Electrical Equipment
Section 10—Capacitors: Power Factor Correction
SECTION 10—CAPACITORS: POWER
FACTOR CORRECTION
Bulletin No. 018IB0001R5/01
May 2001
A. Visual and Mechanical Inspection
1. Document equipment nameplate data on the test report.
2. Verify that the capacitor nameplate ratings are in accordance with the
final approved or record drawings and specifications.
3. Inspect the physical and mechanical condition of the equipment.
4. Inspect the capacitors for the correct mounting and required clearances,
per the manufacturer’s recommended procedures.
5. Verify that capacitors are electrically connected in their specified
configuration, per the manufacturer’s recommended procedures.
6. Using a calibrated torque wrench, verify that the tightness of accessible
bolted electrical connections is in accordance with the manufacturer's
published data. If no manufacturer's data is available, use the values in
Table 1 on page 57.
B. Electrical Tests
1. Perform insulation-resistance tests from terminal(s) to case for one
minute on capacitors with more than one bushing. The test voltage and
minimum resistance shall be in accordance with the manufacturer’s
instructions or Table 2 on page 59.
2. Measure the capacitance of all terminal combinations.
3. Measure the resistance of the internal discharge resistors.
16
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
SECTION 11—CIRCUIT BREAKERS:
LOW VOLTAGE INSULATED CASE/
MOLDED CASE
Procedures for Startup and Commissioning of Electrical Equipment
Section 11—Circuit Breakers: Low Voltage Insulated Case/Molded Case
A. Visual and Mechanical Inspection
Field Testing Industrial Molded-Case Circuit Breakers)
1. Document equipment nameplate data on test report. Verify equipment
nameplate ratings are in accordance with the final approved or record
drawings and specifications.
2. Inspect circuit breaker for correct mounting.
3. Operate circuit breaker to insure smooth operation.
4. Inspect case for cracks or other defects.
5. Verify tightness of accessible bolted connections and/or cable
connections by calibrated torque-wrench method in accordance with
manufacturer's published data. If no manufacturer's data is available, use
the values in Table 1 on page 57.
6. Verify that trip units, shunt trip coils, auxiliary contacts and all other
accessories are in accordance with the job specifications.
7. Exercise the push to trip button to verify trip and reset.
8. If the circuit breaker contains a MICROLOGIC™ trip unit, perform the
following inspections:
a. Verify that the breaker is equipped with the correct rating plugs and
current sensors.
b. Verify that the breaker has the specified trip unit, LI, LS, LSI, and
LSIG.
c. Verify that the breaker has the specified accessories, such as
Auxiliary Contacts, Cell Switches, Shunt Trip Devices, and
Undervoltage Release.
d. Verify that the Ground Fault System has been wired in accordance
with the specified wiring diagram, and that the Sensor Grounds are
either present or not present as specified.
e. Verify that the secondary control plug/connections are in accordance
with the wiring diagram and specifications.
9. If it is an SED or drawout MASTERPACT® circuit breaker, perform the
following inspections:
a. Confirm that lubricants have been correctly applied at the
manufacturer's recommended locations.
b. Inspect anchorage, alignment, and grounding. Inspect arc chutes.
Inspect moving and stationary contacts for condition and alignment.
c. Verify that all maintenance devices are available for servicing and
operating the breaker.
d. Perform all mechanical operator and contact alignment tests on both
the breaker and its operating mechanism.
e. Check cell fit and element alignment.
f.
Check the racking mechanism.
B. Electrical Tests
NOTE: When performing dielectric tests, you must disconnect all Instrument
and Control Transformers, Arresters, TVSS units, and other sensitive
electronic equipment that may cause erroneous results or cause damage to
equipment that is not rated in accordance with molded case circuit breaker
industry standards.
Verify the proper selection and operation of the electrical test equipment.
Record the date of the last calibration date and the date re-calibration is due.
© 2000-2001 Schneider Electric All Rights Reserved
17
Procedures for Startup and Commissioning of Electrical Equipment
Section 11—Circuit Breakers: Low Voltage Insulated Case/Molded Case
Bulletin No. 018IB0001R5/01
May 2001
1. Perform a contact-resistance test for Circuit breakers listed in
Table 7 on page 63 in accordance with the following procedure.
NOTE: The following procedure assumes the breaker is new, but may
have carried some previous load current.
(a) Completely de-energize the equipment.
(b) Operate the circuit breaker manually on and off several times to
ensure the mechanism linkages are free and operate properly. Trip
the circuit breaker with the push to trip button if so equipped. Reset
and turn the breaker back on. Repeat to ensure operability. If the
circuit breaker does not trip, or if it does not reset after tripping, it must
be replaced.
(c) Measure the voltage drop across each pole or the resistance with a
digital low-resistance ohmmeter.
(d) Calculate the Resistance (if necessary) (Vdc drop/Idc rating current)
(e) Compare the Resistance (calculated or reading) with the values listed
in Table 7 on page 63.
(f) If the value calculated or read is higher than the values listed in Table
7 on page 63, repeat the process starting at (c) above operating the
breaker several times. If high readings persist, recommend that the
breaker be replaced.
2. Perform an insulation-resistance test at 1000 volts dc from pole-to-pole
and from each pole-to-ground with breaker closed and across open
contacts of each phase. Insulation resistance should be greater than 100
Megohms.
3. Perform adjustments for final settings in accordance with coordination
study supplied by owner, if available.
4. Verify correct operation of any auxiliary features such as trip and pickup
indicators, electrical close and trip operation, trip-free, and anti pump
function.
5. If the circuit breaker contains a MICROLOGIC™ trip unit, perform the
following tests:
a. Make adjustments for the final settings in accordance with the
coordination study supplied by the owner, if available.
b. Determine the minimum pickup current by secondary current
injection, using the manufacturer’s specified test device and
procedures.
c. Determine long-time delay by secondary current injection, using the
manufacturer’s specified test device and procedures.
d. Determine short-time pickup and delay by secondary current
injection, using the manufacturer’s specified test device and
procedures.
e. Determine ground-fault pickup and delay by secondary current
injection, using the manufacturer’s specified test device and
procedures.
f.
Determine the instantaneous pickup value by secondary current
injection, using the manufacturer’s specified test device and
procedures.
g. Activate auxiliary protective devices such as undervoltage relays, to
ensure that shunt trip devices are operating. Check the operation of
electrically operated breakers in their cubicles.
h. Verify auxiliary features, such as trip and pickup indicator, electrical
close and trip operation, trip-free, and antipump function are
operating correctly.
18
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
Procedures for Startup and Commissioning of Electrical Equipment
Section 11—Circuit Breakers: Low Voltage Insulated Case/Molded Case
i.
Check the electric charging mechanism, if applicable.
C. Optional Tests
1. Perform insulation-resistance tests in accordance with Table 2 on page
59. Do not perform this test on wiring connected to solid-state
components.
2. Perform long-time delay time-current characteristic tests by passing 300
percent rated current through each pole separately unless series testing
is required to defeat ground fault functions.
3. Determine short-time pickup and delay by primary current injection using
the manufacturer’s current specified procedures. If the procedures are
not available, set the pickup somewhere above minimum.
4. Determine ground-fault pickup and time delay by primary current injection
using the manufacturer’s current specified procedures. If the procedures
are not available, set the pickup somewhere above minimum.
5. Determine instantaneous pickup current by primary injection using runup or pulse method, per the manufacturer’s current specified procedures.
NOTE: Values of pickup and delay found should agree with the
manufacturer’s specifications.
© 2000-2001 Schneider Electric All Rights Reserved
19
Procedures for Startup and Commissioning of Electrical Equipment
Section 12—Circuit Breakers: Low Voltage Power (ANSI/IEEE C37.13)
SECTION 12—CIRCUIT BREAKERS:
LOW VOLTAGE POWER (ANSI/IEEE
C37.13)
Bulletin No. 018IB0001R5/01
May 2001
A. Visual and Mechanical Inspection
1. Document equipment nameplate data on test report. Verify that
equipment nameplate ratings are in accordance with the final approved
or record drawings and specifications, if available.
2. Inspect the physical and mechanical condition of the equipment.
3. Confirm that lubricants have been correctly applied at the manufacturer's
recommended locations.
4. Inspect anchorage, alignment, and grounding. Inspect arc chutes.
Inspect moving and stationary contacts for condition and alignment.
5. Verify that all maintenance devices are available for servicing and
operating the breaker.
6. Perform all mechanical operator and contact alignment tests on both the
breaker and its operating mechanism.
7. Using the calibrated torque-wrench method, verify that the tightness of
accessible bolted bus connections is in accordance with the
manufacturer's published data. If no manufacturer's data is available, use
the values in Table 1 on page 57.
8. Check cell fit and element alignment.
9. Check the racking mechanism.
10. Verify that the breaker is equipped with the correct rating plugs and
current sensors.
11. Verify that the breaker has the specified trip unit, LI, LS, LSI, and LSIG.
12. Verify that the breaker has the specified accessories, such as Auxiliary
Contacts, Cell Switches, Shunt Trip Devices, and Undervoltage Release.
13. Verify that the Ground Fault System has been wired in accordance with
the specified wiring diagram, and that the Sensor Grounds are either
present or not present as specified.
14. Verify that the secondary control plug/connections are in accordance with
the wiring diagram and specifications.
B. Electrical Tests
NOTE: When performing dielectric tests, you must disconnect all Instrument
and Control Transformers, Arresters, TVSS units, and other sensitive
electronic equipment that may cause erroneous results or cause damage to
equipment that is not rated in accordance with Switchgear industry
standards.
Verify the proper selection and operation of the electrical test equipment.
Record the date of the last calibration date and the date re-calibration is due.
1. Perform a contact-resistance test. For Type DS, DS II, DSL, and
DSL II type circuit breakers, use the following procedure:
(a) With the breaker de-energized, operate the breaker closed and open
several times using either manual or electrical means.
(b) Apply a minimum current of 100 amperes dc through the closed
contacts. If 100 A is not available, use the highest current available. If
the device does not conform to the manufacturer’s specification,
obtain equipment to perform the test at 100 A, or consult the factory
with full information about the details of the test. If the continuous
current rating is less than 100 A, then test at a level not to exceed the
continuous current rating.
(c) Measure the contact resistance of each pole and compare with the
values listed in Table 8 on page 66.
20
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
Procedures for Startup and Commissioning of Electrical Equipment
Section 12—Circuit Breakers: Low Voltage Power (ANSI/IEEE C37.13)
(d) If the resistance is below the value shown in Table 8 on page 66, the
condition of the breaker contacts is considered suitable for service. If
the resistance exceeds the value in Table 8, the contacts can be
abraded lightly with “Scotchbrite” or crocus cloth to remove oxides or
other contaminants. Excessive abrading of contacts should be
avoided since the silver plating could be abraded away. Contact the
factory if nominal values of resistance cannot be achieved.
2. Perform an insulation-resistance test at 1000 volts dc from pole-to-pole
and from each pole-to-ground, with the breaker closed and across open
contacts of each phase. The minimum insulation resistance shall be in
accordance with Table 2 on page 59.
3. Make adjustments for the final settings in accordance with the
coordination study supplied by the owner, if available.
4. Determine the minimum pickup current by secondary current injection,
using the manufacturer’s specified test device and procedures.
5. Determine long-time delay by secondary current injection, using the
manufacturer’s specified test device and procedures.
6. Determine short-time pickup and delay by secondary current injection,
using the manufacturer’s specified test device and procedures.
7. Determine ground-fault pickup and delay by secondary current injection,
using the manufacturer’s specified test device and procedures.
8. Determine the instantaneous pickup value by secondary current
injection, using the manufacturer’s specified test device and procedures.
9. Activate auxiliary protective devices such as undervoltage relays, to
ensure that shunt trip devices are operating. Check the operation of
electrically operated breakers in their cubicles.
10. Verify auxiliary features, such as trip and pickup indicator, electrical close
and trip operation, trip-free, and antipump function are operating correctly.
11. Check the electric charging mechanism, if applicable.
C. Optional Testing
1. Perform an insulation-resistance test in accordance with Table 2 on page
59. Do not perform the test on wiring connected to solid-state
components.
2. Determine minimum pickup current by primary current injection, using the
manufacturer’s specified procedures. If the procedures are not available,
set the pickup somewhere above minimum.
3. Determine long-time delay by primary current injection, using the
manufacturer’s specified procedures. If the procedures are not available,
set the delay somewhere above minimum.
4. Determine short-time pickup and delay by primary current injection, using
the manufacturer’s specified procedures. If the procedures are not
available, set the pickup somewhere above minimum.
5. Determine ground-fault pickup and delay by primary current injection,
using the manufacturer’s specified procedures. If the procedures are not
available, set the pickup somewhere above minimum.
6. Determine instantaneous pickup value by primary current injection, using
the manufacturer’s specified procedures. If the procedures are not
available, set the pickup somewhere above minimum.
7. Activate the Blown Fuse detector and confirm by attempting to close the
breaker without reset.
NOTE: The values of pickup and delay should agree with the manufacturer’s
specifications.
© 2000-2001 Schneider Electric All Rights Reserved
21
Procedures for Startup and Commissioning of Electrical Equipment
Section 13—Circuit Breakers: Medium Voltage SF6
SECTION 13—CIRCUIT BREAKERS:
MEDIUM VOLTAGE SF6
Bulletin No. 018IB0001R5/01
May 2001
A. Visual and Mechanical Inspection
1. Document equipment nameplate data on test report. Verify that
equipment nameplate ratings are in accordance with the final approved
or record drawings and specifications, if available.
2. Inspect the physical and mechanical condition of the breaker.
3. Confirm that lubricants have been correctly applied at the manufacturer's
recommended locations.
4. Inspect anchorage and grounding.
5. Inspect and verify that adjustments of the mechanism are in accordance
with the manufacturer's instructions.
6. Check indicators for gas leaks in accordance with the manufacturer's
instructions.
7. Verify correct operation of all air and SF6 gas pressure switches, alarms
and cutouts. (Note: For sealed interrupters, the pressure cannot be varied
to change the state of pressure switches.)
8. Slow the close/open breaker and check for binding.
9. Use the calibrated torque wrench method to verify that the tightness of
accessible bolted connections and/or cable connections are in
accordance with the manufacturer's published data. If no manufacturer's
data is available, use the values in Table 1 on page 57.
10. Record as-found and as-left counter operations.
B. Electrical Tests
NOTE: When performing dielectric tests, you must disconnect all Instrument
and Control Transformers, Arresters, TVSS units, and other sensitive
electronic equipment that may cause erroneous results or cause damage to
equipment that is not rated in accordance with the equipment standards.
Verify the proper selection and operation of the electrical test equipment.
Record the date of the last calibration date and the date re-calibration is due.
1. Measure contact resistances using the following procedure:
(a) Operate the breaker closed and open several. times.
(b) Apply 100 amperes DC and measure the resistance of each pole. If
100 A is not available, use the highest current available. If the device
does not conform to the manufacturer’s specification, obtain
equipment to perform the test at 100 A or consult the factory with full
information about the details of the test. If the continuous current rating
is less than 100 A, then test at a level not to exceed the continuous
current rating.
(c) If the measured resistance is greater than 2000 micro-ohms, consult
the manufacturer
2. Perform insulation-resistance tests pole-to-pole, pole-to-ground, and
across open poles in accordance with Table 2 on page 59.
3. Perform a power frequency withstand test in accordance with the
manufacturer's instructions. For circuit breakers, perform the
test in accordance with Table 5 on page 61.
4. Verify trip, close, trip-free, and antipump functions.
5. Trip the circuit breaker by operating each protective device.
22
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
Procedures for Startup and Commissioning of Electrical Equipment
Section 13—Circuit Breakers: Medium Voltage SF6
C. Optional Tests
1. Perform an insulation-resistance test on all control wiring in accordance
with Table 2 on page 59. Do not perform this test on wiring connected to
solid-state relays.
2. Perform time-travel analysis using a travel distance timer.
3. Perform dissipation-factor/power-factor tests on breaker and bushings on
each pole with the breaker open, and on each phase with the breaker
closed.
4. Perform a minimum pick-up voltage test on trip and close coils.
© 2000-2001 Schneider Electric All Rights Reserved
23
Procedures for Startup and Commissioning of Electrical Equipment
Section 14—Circuit Breakers: Medium Voltage Vacuum
SECTION 14—CIRCUIT BREAKERS:
MEDIUM VOLTAGE VACUUM
Bulletin No. 018IB0001R5/01
May 2001
A. Visual and Mechanical Inspection
1. Document equipment nameplate data on test report. Verify that
equipment nameplate ratings are in accordance with the final approved
or record drawings and specifications, if available.
2. Inspect physical and mechanical condition.
3. Confirm that lubricants have been correctly applied at the manufacturer's
recommended locations.
4. Inspect anchorage, alignment, and grounding.
5. Perform all mechanical operational tests on both the circuit breaker and
its operating mechanism.
6. Measure critical distances, such as contact gap, as specified by the
manufacturer’s service bulletin.
7. Use the calibrated torque wrench method to verify that the tightness of
accessible bolted connections and/or cable connections are in
accordance with the manufacturer's published data. If no manufacturer's
data is available, use the values in Table 1 on page 57.
8. Record as-found and as-left operation counter readings.
B. Electrical Tests
NOTE: When performing dielectric tests, you must disconnect all Instrument
and Control Transformers, Arresters, TVSS units, and other sensitive
electronic equipment that may cause erroneous results or cause damage to
equipment that is not rated in accordance with the equipment standards.
Verify the proper selection and operation of the electrical test equipment.
Record the date of the last calibration date and the date re-calibration is due.
1. Perform a contact-resistance test in accordance with the following
procedure:
(a) Operate the breaker closed and open several times.
(b) Apply 100 Amperes dc and measure the contact resistance of each
pole. If 100 A is not available, use the highest current available. If the
device does not conform to the manufacturer’s specification, obtain
equipment to perform the test at 100 A or consult the factory with full
information about the details of the test. If the continuous current
rating is less than 100 A, then test at a level not to exceed the
continuous current rating.
CAUTION
HAZARD OF INJURY OR EQUIPMENT
DAMAGE
• DC LIM Hi-Pot testing of vacuum breakers is
not recommended.
• Read the label on the vacuum bottle for
precautions to take against the danger of xray emission while performing AC Hi-Pot
testing.
Failure to follow these instructions can
result in injury or equipment damage.
24
(c) Breaker pole units having a resistance exceeding 35 microhms shall
be referred to the manufacturer for further evaluation.
2. Verify the trip, close, trip-free, and antipump functions.
3. Trip the circuit breaker by operating each protective device.
4. Perform insulation-resistance tests pole-to-pole, pole-to-ground, and
across open circuit breaker separable contacts in accordance with Table
2 on page 59.
5. Perform a vacuum bottle integrity (over potential) test. Use an AC Hi-Pot
across each vacuum bottle with the breaker in the open position, in strict
accordance with manufacturer's instructions. For Metal-Clad Switchgear,
apply the Maximum Test Voltage across the open gap in accordance with
Table 5 on page 61 for a duration of one minute. Contact the manufacturer
if repeated consistent breakdowns are encountered.
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
Procedures for Startup and Commissioning of Electrical Equipment
Section 14—Circuit Breakers: Medium Voltage Vacuum
C. Optional Testing
1. Perform an insulation-resistance test on all control wiring in accordance
with Table 2 on page 59. Do not perform this test on wiring connected to
solid-state relays.
2. Perform breaker travel and velocity analysis, using a travel distance timer.
3. Perform minimum pickup voltage tests on trip and close coils.
4. Perform dissipation-factor/power-factor tests on each pole with the
breaker open, and on each phase with the breaker closed.
© 2000-2001 Schneider Electric All Rights Reserved
25
Procedures for Startup and Commissioning of Electrical Equipment
Section 15—Direct Current Systems: Batteries
SECTION 15—DIRECT CURRENT
SYSTEMS: BATTERIES
Bulletin No. 018IB0001R5/01
May 2001
A. Visual and Mechanical Inspection
1. Document equipment nameplate data on the test report. Verify that
equipment nameplate ratings are in accordance with the final approved
or record drawings and specifications.
2. Inspect the physical and mechanical condition of the equipment.
3. Use the calibrated torque wrench method to verify that the tightness of
accessible bolted connections and/or cable connections are in
accordance with the manufacturer's published data. If no manufacturer's
data is available, use the values in Table 1 on page 57.
4. Measure electrolyte specific gravity and temperature, and visually check
the fill level.
B. Electrical Tests
Verify the proper selection and operation of the electrical test equipment.
Record the date of the last calibration date and the date re-calibration is due.
1. Verify that all charger functions and alarms are operating properly.
2. Measure each cell voltage and total battery voltage with the charger
energized and in float mode of operation.
C. Optional Tests
1. Verify that flame arresters are present.
2. Set the charger float and equalizing voltage levels.
3. Perform a capacity load test in accordance with the manufacturer's
specifications and ANSI/IEEE standards.
26
•
ANSI/IEEE Std 450-1987. Recommended Practice for Maintenance,
Testing and Replacement of Large Lead Storage Batteries for
Generating Stations and Substations.
•
ANSI/IEEE Std 1106-1987. Recommended Practice for
Maintenance, Testing and Replacement of Nickel-Cadmium Storage
Batteries for Generating Stations and Substations.
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
SECTION 16—EMERGENCY SYSTEMS:
AUTOMATIC TRANSFER SWITCHES
Procedures for Startup and Commissioning of Electrical Equipment
Section 16—Emergency Systems: Automatic Transfer Switches
A. Visual and Mechanical Inspection
1. Compare equipment nameplate data with drawings and specifications.
Verify that equipment nameplate ratings are in accordance with the final
approved or record drawings and specifications.
2. Inspect the physical and mechanical condition of the equipment.
3. Confirm that lubricants have been correctly applied at the manufacturer's
recommended locations.
4. Verify that manual transfer warnings are attached and visible.
5. Verify tightness of all control connections.
6. Use the calibrated torque wrench method to verify that the tightness of
accessible bolted connections and/or cable connections are in
accordance with the manufacturer's published data. If no manufacturer's
data is available, use the values in Table 1 on page 57.
7. Perform manual transfer operation.
8. Verify positive mechanical interlocking between normal and alternate
sources.
B. Electrical Tests
NOTE: When performing dielectric tests, you must disconnect all Instrument
and Control Transformers, Arresters, TVSS units, and other sensitive
electronic equipment that may cause erroneous results or cause damage to
equipment that is not rated in accordance with the equipment standards.
Verify the proper selection and operation of the electrical test equipment.
Record the date of the last calibration date and the date re-calibration is due.
1. Measure contact-resistance.
2. Perform insulation-resistance tests, phase-to-phase and phase-toground, with the switch in both source positions at the minimum dc test
voltage appropriate for the equipment’s Maximum Rated Voltage, in
accordance with Table 2 on page 59. Record the resistances.
3. Verify the settings and operation of control devices.
4. Calibrate and set all relays and timers in accordance with “Section 25—
Protective Relays” on page 43.
5. Perform the following automatic transfer tests:
(a) Simulate loss of normal power.
(b) Return to normal power.
(c) Simulate loss of emergency power.
(d) Simulate all forms of single-phase conditions.
6. Verify that the following functions have correct timing and are operating
properly:
(a) Normal source voltage-sensing relays
(b) Engine start sequence
(c) Time delay upon transfer
(d) Alternate source voltage-sensing relays
(e) Automatic transfer operation
(f) Interlocks and limit switch function
(g) Time delay and retransfer upon normal power restoration
(h) Engine cool down and shutdown feature
© 2000-2001 Schneider Electric All Rights Reserved
27
Procedures for Startup and Commissioning of Electrical Equipment
Section 16—Emergency Systems: Automatic Transfer Switches
Bulletin No. 018IB0001R5/01
May 2001
7. Verify that the mechanical power is removed from the generator in the
event of a phase to phase or phase to ground fault between the generator
and generator protection means (i.e., Circuit Breaker or Fuses).
28
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
SECTION 17—GROUND-FAULT
PROTECTION SYSTEMS
Procedures for Startup and Commissioning of Electrical Equipment
Section 17—Ground-Fault Protection Systems
A. Visual and Mechanical Inspection
1. Document equipment nameplate data on test report. Verify that
equipment nameplate ratings are in accordance with the final approved
or record drawings and specifications, if available.
2. Visually inspect the components for damage and errors in polarity or
conductor routing.
(a) Verify that the ground connection is made ahead of the neutral
disconnect link, and on the line side of any ground fault sensor.
NOTE: In some cases, Generator neutrals are also bonded to ground
in a similar fashion as service entrance bonds are used for
commercial power connections. In these cases, neutral sensors are
used in the bond connection and differentially connected within the
Ground Fault detection system.
(b) Verify that proper polarity exists for both primary and secondary
connectors to the neutral sensors.
(c) Verify that all phase conductors and the neutral pass through the
sensor in the same direction for zero sequence systems.
(d) Verify that grounding conductors do not pass through zero sequence
sensors.
(e) Verify that the grounded conductor (usually Neutral) is bonded to ground
in accordance with the power system specifications. Bonding to ground
is permitted at the service entrance only with the exception of double
ended systems with a single center bond and/ or on the secondary of a
separately derived power systems including generators. Power systems
may have multiple service entrances and multiple bonding at the
multiple service entrances. Bonding to ground is not permitted
downstream of the service and separately derived equipment.
NOTE: Refer to the special operating and testing instructions
supplied with the equipment, if available.
3. Verify tightness of all electrical connections, including control circuits.
4. Verify correct operation of all functions of the self-test panel.
5. Verify that the control power transformer has adequate capacity for the system.
6. Set pickup and time-delay settings in accordance with the settings
provided in the owner's specifications.
B. Electrical Tests
Verify the proper selection and operation of the electrical test equipment.
Record the date of the last calibration date and the date re-calibration is due.
1. Measure the system neutral-to-ground insulation resistance with the
neutral disconnect link temporarily removed. Replace the neutral
disconnect link after testing.
2. For a system: that involves only one source; is a ground fault protection
system that uses a zero phase sequence sensor that encompasses all
phase and neutral conductors; and has a test winding within the zero
phase sequence sensor, test by injecting test current in the test winding,
as long as the sensor is not differentially connected with another sensor.
Such systems are typically used with fused switch systems, but are
occassionally used with circuit breaker systems where the internal
breaker GF protection system is not used. In this case, a primary current
injection test method need not be used. The test is a self test that uses a
feature integral to the unit. If instructions are not provided, use the
technique in step 3 below.
© 2000-2001 Schneider Electric All Rights Reserved
29
Procedures for Startup and Commissioning of Electrical Equipment
Section 17—Ground-Fault Protection Systems
Bulletin No. 018IB0001R5/01
May 2001
3. For systems involving multiple sources or multiple levels of ground fault
protection, perform the following pickup tests using primary current
injection techniques. These tests shall be performed on each
independent bus, with test current applied from each possible source.
Example: If a power system consists of a Main, Tie, Main, and one
generator breaker on one side, this system would contain three
independent buses: the bus between the first Main and Tie; the bus
between the Tie and the second Main; and the bus (or conductors)
between the generator circuit breaker and generator. Test current would
be injected on the source side of each Main and from the generator
terminals. A grounding test lead would then be connected between each
of the defined bus locations and ground.
Check the manufacturer’s records for special testing procedures that
would be applicable for the particular system being tested.
(a) Verify that the relay does not operate at 90 percent of the pickup setting.
(b) Verify that pickup is less than 125 percent of setting, or 1200 amperes,
whichever is smaller.
4. For summation type systems utilizing phase and neutral current
transformers, verify that polarities are correct by applying current to each
phase-neutral current transformer pair. This test also applies to moldedcase breakers using an external neutral current transformer.
(a) The relay should operate when the current direction is the same
relative to polarity marks in the two current transformers.
(b) The relay should not operate when the current direction is opposite
relative to polarity marks in the two current transformers.
5. Verify non-tripping activity by applying primary current injection testing
techniques as in number 2 above. Current setting for this test shall be
above 125 of the relay pickup setting. The test cable would be connected
between a phase conductor and the Neutral for that section of the gear.
This test shall be repeated for each condition as was determined in
number 2 above.
6. Verify that zone selective interlock systems are operating correctly.
Source breakers to an independent bus should receive a restraint signal
when a ground fault is detected by a lower stream device. Complex
systems having multiple sources and tie breakers should operate in a
logical manner as is determined by the power system involved.
Example: For a Main, Tie, Main system, a restraint signal emanating from
a feeder breaker should not restrain the Main breaker on the opposite
side, unless that Main is the only means of protecting the bus to which
that feeder breaker is connected.
Since there are many different types of Ground Fault systems—Elegant,
Non-Elegant, relayed tie, or non-relayed tie—it is not practical to set down
one rule of operation. Each system must be evaluated on its own merit,
and a logical operation must be determined for each. It is suggested that
the project engineer be consulted in determining the correct operation.
C. Optional Tests
1. Measure the insulation resistance of the control wiring in accordance with
Table 2 on page 59. Do not perform tests on wiring connected to solidstate relays.
2. Measure the time delay of the relay at 150 percent or greater of pickup.
Verify operability of I2t function, if being used, of the ground fault trip device.
3. Verify reduced control voltage tripping capability: 55 percent for ac systems.
30
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
SECTION 18—GROUND RESISTORS
Procedures for Startup and Commissioning of Electrical Equipment
Section 18—Ground Resistors
A. Visual and Mechanical Inspection
1. Document equipment nameplate data on the test report. Verify that
equipment nameplate ratings are in accordance with the final approved
or record drawings and coordination study, if available.
2. Inspect the physical and mechanical condition of the equipment.
3. Verify that any shipping bracing, brackets, or fixtures are removed after
final placement.
4. Use the calibrated torque wrench method to verify that the tightness of
accessible bolted connections and/or cable connections are in
accordance with the manufacturer's published data. If no manufacturer's
data is available, use the values in Table 1 on page 57.
5. Verify that all frame and enclosure grounds are correct.
6. Verify that tap connections are as specified, if applicable.
7. Perform a visual and mechanical inspection on all secondary wiring and
instrument transformers per the manufacturer’s installation and operating
procedures.
B. Electrical Tests
1. Perform an instrument transformer polarity check.
2. Perform insulation resistance tests on each instrument transformer, each
winding to ground at 500 volts dc. Do not perform this test on solid state
devices. Resistance readings should be consistent with Table 2 on page
59 for test voltages of 500 volts dc.
3. Test all electrical controls (relays, lights, switches) to verify that they are
operating properly.
© 2000-2001 Schneider Electric All Rights Reserved
31
Procedures for Startup and Commissioning of Electrical Equipment
Section 19—Grounding Systems
SECTION 19—GROUNDING SYSTEMS
Bulletin No. 018IB0001R5/01
May 2001
A. Visual and Mechanical Inspection
Verify that the ground system is in compliance with drawings and
specifications.
B. Electrical Tests
NOTE: When performing dielectric tests, you must disconnect all Instrument
and Control Transformers, Arresters, TVSS units, and other sensitive
electronic equipment that may cause erroneous results or cause damage to
equipment that is not rated in accordance industry standards.
Verify the proper selection and operation of the electrical test equipment.
Record the date of the last calibration date and the date re-calibration is due.
1. Perform a fall-of-potential test or alternative in accordance with IEEE
Standard 81-1991 on the main grounding electrode or system.
2. Perform point-to-point tests to determine the resistance between the
main grounding system and all major electrical equipment frames,
system neutral, and/or derived neutral points.
32
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
SECTION 20—ISOLATED POWER
SYSTEMS
Procedures for Startup and Commissioning of Electrical Equipment
Section 20—Isolated Power Systems
NOTE: All equipment shall be assured to be complete
and of acceptable quality. Inspection and testing of all applicable wiring and
equipment must conform to Article 517 of the National Electrical Code (NEC)
and Article 99 of the National Fire Protection Association (NFPA).
A. Visual and Mechanical Inspection
1. Perform a functional check of all equipment in the area.
2. Inspect all equipment in the area for physical damage such as
cracked meters or scratches. Any physical or electrical defect must be
recorded and discussed with the appropriate people at the job site. If the
damage appears to have occurred at the job site, note this on your report.
3. Inspect the room ground and the patient reference ground if installed.
4. Remove the stainless steel trim and the circuit breaker dead front.
Examine the branch circuit wiring.
5. Verify that the proper breaker identification is on the circuit schedule.
6. Examine the receptacles, ground jacks, lights, switches, and
miscellaneous electrical equipment for compliance to applicable
electrical codes.
B. Electrical Tests
1. Measure line-to-line and line-to-ground voltage with an ac voltmeter and
record the voltage on the data sheet.
2. Measure the leakage current with an ac microammeter that is capable of
being accurate within 3%. Record the value to three significant figures.
Measure the current between L1 and ground and L2 and ground.
NOTE: Before taking current measurements, verify that no phase
conductor is at ground potential.
3. Use the following formulas to determine the individual line impedance
based on the values calculated in step 2 and line-to-line voltage
measurement:
V (L1 to L2)
Z (L1 to GD)
=
Z (L2 to GD)
=
I (L2 to GD)
V (L1 to L2)
I (L1 to GD)
Line impedance measurements will include all receptacles, but are not
required to include lighting fixtures or components of fixtures. All
electrical equipment connected to the isolated power system must be
unplugged, and permanently installed equipment must be switched off.
For isolation panels with branch-circuit interlock (x-ray panels), branch
circuits must be measured individually. Record the circuit with the lowest
calculated impedance as the “system” impedance.
For panels in which a combination of circuits may be energized (PLC
laser panels), measure branch circuits individually; energize the
combination of circuits that contributes the highest amount of leakage
current. This value is used to calculate the system impedance.
If a line impedance is below 200,000 ohms (NFPA-99 1996, 3-3.2.2.2),
the probable cause should be determined. If you cannot correct the
problem at this time, you must note it on the report.
© 2000-2001 Schneider Electric All Rights Reserved
33
Procedures for Startup and Commissioning of Electrical Equipment
Section 20—Isolated Power Systems
Bulletin No. 018IB0001R5/01
May 2001
4. Line Isolation Monitor (LIM) Calibration Tests: Determine the exact trip
point of the LIM by slowly lowering the impedance between each isolated
conductor and ground until the LIM goes into an alarm condition, and
then measure the total hazard current with an ac milliammeter.
Apply the following test faults between the isolated conductors and
ground:
• Single resistive L1 to ground
• Single resistive L2 to ground
• Single resistive L3 to ground (three-phase systems)
• Balanced resistive L1 to ground and L2 to ground (one-phase systems
only)
• Single capacitive L1 to ground
• Single capacitive L2 to ground
• Single capacitive L3 to ground (three-phase systems)
• Balanced capacitive L1 to ground (one-phase systems only)
NOTE: The correct trip point of a 2 mA ISO-GARD (series D) LIM is
1.95 mA, +0.15 mA. The correct trip point of a 5 mA ISO-GARD
(series D) LIM is 4.85 mA, +0.25 mA.
5. In patient care areas, determine the effectiveness of the equipment
grounding system by using voltage and impedance measurements. Take
these measurements with respect to a reference grounding point such as
the ground bus in the isolation panel.
Take voltage measurements between the reference point and the
exposed conductive surfaces (including ground contacts of receptacles)
in the patient care vicinity.
NOTE: The voltage limit for new construction is 20mV.
Take impedance measurements between the reference point and the
grounding contact of each receptacle in the patient vicinity.
NOTE: The impedance limit for new construction is 0.1 ohms.
The grounding terminals of all receptacles and the conductive surfaces of
fixed equipment, operating at over 100 volts, must be grounded by a
conductor sized in accordance with NEC.
NOTE: Conductive surfaces in the patient area that are not likely to
become energized (such as windows, door frames, and towel
dispensers) need not be intentionally grounded or tested. Ref: NFPA-99,
3-3.3.2.1
C. Hospital Staff Instruction
Provide a thorough explanation of the isolated power systems to the
appropriate hospital personnel. The instruction should include the following
points:
• Basic theory of isolated power
• Advantages of isolated power systems versus grounded power systems
• Purpose of the Line Isolation Monitor
• Proper use of the grounding jacks
• Basic troubleshooting techniques
• Required periodic testing and record keeping
34
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
Procedures for Startup and Commissioning of Electrical Equipment
Section 20—Isolated Power Systems
D. Formal Customer Report
Provide a report of the test results to the customer within two weeks. The
report must include the following:
• A list of the isolation panels and areas that were tested
• Any code violations that were revealed by the testing and inspection
• Recommendations for corrections of any code violations
• A list of any damaged equipment. Note if these items will be replaced
under warranty.
• Individual data sheets for the isolated power systems
• A logbook with initial hazard current readings of the isolated systems
© 2000-2001 Schneider Electric All Rights Reserved
35
Procedures for Startup and Commissioning of Electrical Equipment
Section 21—Motor Control Centers: Low and Medium Voltage
SECTION 21—MOTOR CONTROL
CENTERS: LOW AND MEDIUM
VOLTAGE
Bulletin No. 018IB0001R5/01
May 2001
A. Visual and Mechanical Inspection
1. Document equipment nameplate data on test report. Verify that
equipment nameplate ratings are in accordance with the final approved
or record drawings and specifications.
2. Inspect the physical, electrical, and mechanical condition of structure and
all electrical components.
3. Confirm that lubricants have been correctly applied at the manufacturer's
recommended locations.
4. Verify appropriate anchorage, required area clearances, physical
damage, and correct alignment and cleanliness.
5. Inspect all doors, panels, and sections for paint, dents, scratches, fit, and
missing hardware.
6. Verify that fuse and/or circuit breaker sizes and types correspond to
drawings and coordination study, if available, as well as to the circuit
breaker's address for microprocessor-communication packages.
7. Verify that current and potential transformer ratios correspond to
drawings.
8. Use the calibrated torque wrench method to verify that the tightness of
accessible bolted connections and/or cable connections are in
accordance with the manufacturer's published data. If no manufacturer's
data is available, use the values in Table 1 on page 57.
9. Confirm correct operation and sequencing of electrical and mechanical
interlock systems.
(a) Attempt closure on locked-open devices. Attempt to open lockedclosed devices.
(b) Make key exchange with devices operated in off-normal positions.
10. Inspect insulators for evidence of physical damage or contaminated
surfaces.
11. Verify correct barrier and shutter installation and operation.
12. Exercise all active components.
13. Verify that filters are in place and/or vents are clear.
14. Test the operation, alignment, and penetration of instrument transformer
withdrawal disconnects, current carrying and grounding, in accordance
with “Section 32—Transformers, Instrument” on page 53.
15. Inspect control power transformers.
(a) Inspect for physical damage, such as cracked insulation, broken
leads, tightness of connections, defective wiring, and overall general
condition.
(b) Verify that primary and secondary fuse ratings or circuit breakers
match drawings.
(c) Verify that both primary and secondary tap connections are in
accordance with manufacturer’s recommendations and drawings.
16. Verify that customer connections to remote power, operators, interlocks,
and indicators have been made.
36
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
Procedures for Startup and Commissioning of Electrical Equipment
Section 21—Motor Control Centers: Low and Medium Voltage
B. Electrical Tests
NOTE: When performing dielectric tests, you must disconnect all Instrument
and Control Transformers, Arresters, TVSS units, and other sensitive
electronic equipment that may cause erroneous results or cause damage to
equipment that is not rated in accordance with the equipment standards.
Verify the proper selection and operation of the electrical test equipment.
Record the date of the last calibration date and the date re-calibration is due.
1. Perform insulation-resistance tests on each bus section, phase-to-phase
and phase-to-ground at the minimum dc test voltage appropriate for the
equipment Maximum Rated Voltage, in accordance with Table 2 on page
59. Record the resistances. If the resistance is lower than the
recommended values in Table 2 on page 59, dry the equipment for a
minimum of 4 hours using heat and fans. Then re-measure. If low
readings persist after vigorous drying, contact the manufacturer.
2. Perform a control wiring performance test by applying control voltage.
Verify that the equipment operates as intended.
3. Verify that MCC heaters operate properly.
4. Perform tests on starters in accordance with “Section 22—Motor
Starters: Low Voltage” on page 39 or “Section 23—Motor Starters:
Medium Voltage” on page 40.
C. Optional Tests
1. Determine the accuracy of all meters in accordance with “Section 7—
Analog Metering” on page 13.
2. Perform insulation-resistance tests in accordance with Table 2 on page
59. Do not perform this test on wiring connected to solid-state
components.
3. Perform tests on all instrument transformers in accordance with “Section
32—Transformers, Instrument” on page 53.
4. Perform the following tests on control power transformers:
(a) Perform insulation-resistance tests. Take measurements from
winding-to-winding and each winding-to-ground. Test voltages shall
be in accordance with Table 2 on page 59 unless otherwise specified
by the manufacturer.
(b) Perform a secondary wiring integrity test. Disconnect the transformer
at secondary terminals, and connect secondary wiring to the correct
secondary voltage. Confirm potential at all devices.
(c) Verify that the secondary voltage is correct by energizing primary
winding with system voltage. Measure the secondary voltage with the
secondary wiring disconnected.
5. Perform the following tests on potential transformers:
(a) Perform a secondary wiring integrity test. Disconnect the transformer
at secondary terminals, and connect secondary wiring to the correct
secondary voltage. Confirm correct potential at all devices.
(b) Verify that secondary voltage is correct by energizing primary winding
with system voltage. Measure the secondary voltage with the
secondary wiring disconnected.
6. Perform a dielectric test (Hi-Pot) on each bus section, each phase to
ground with phases not under test grounded, in accordance with the
manufacturer's published data. If the manufacturer has no
recommendation for this test, it shall be in accordance with Table 5 on
page 61. The test voltage shall be applied for one minute.
© 2000-2001 Schneider Electric All Rights Reserved
37
Procedures for Startup and Commissioning of Electrical Equipment
Section 21—Motor Control Centers: Low and Medium Voltage
Bulletin No. 018IB0001R5/01
May 2001
7. Perform ground-resistance tests in accordance with “Section 19—
Grounding Systems” on page 32.
8. Perform a contact resistance test through all bus joints with a low
resistance ohmmeter.
38
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
SECTION 22—MOTOR STARTERS: LOW
VOLTAGE
Procedures for Startup and Commissioning of Electrical Equipment
Section 22—Motor Starters: Low Voltage
A. Visual and Mechanical Inspection
1. Document equipment nameplate data on test report. Verify that
equipment nameplate ratings are in accordance with the final approved
and record drawings and specifications. This will include: contactor,
fuses, overloads, circuit breakers, overload relay heaters, power factor
correction capacitors, and the control power transformer.
2. Inspect the physical and mechanical condition of the equipment.
3. Use the calibrated torque wrench method to verify that the tightness of
accessible bolted connections and/or cable connections are in
accordance with the manufacturer's published data. If no manufacturer's
data is available, use the values in Table 1 on page 57.
B. Electrical Tests
NOTE: When performing dielectric tests, you must disconnect all Instrument
and Control Transformers, Arresters, TVSS units, and other sensitive
electronic equipment that may cause erroneous results or cause damage to
equipment that is not rated in accordance with the equipment standards.
Verify the proper selection and operation of the electrical test equipment.
Record the date of the last calibration date and the date re-calibration is due.
1. Measure the insulation resistance of each combination starter, phase-tophase and phase-to-ground, with the starter contacts closed and the
protective device open. Test voltage shall be in accordance with Table 2
on page 59. Refer to the manufacturer's instructions for devices with
solid-state components.
2. Perform operational tests by initiating control devices.
C. Optional Tests
1. Measure the insulation resistance of each control circuit-to-ground. Test
voltage shall be in accordance with Table 2 on page 59. Do not perform
tests on wiring connected to solid-state relays.
2. Test the motor overload relay elements by injecting primary current
through the overload circuit, and monitoring the trip time of the overload
element.
3. Test circuit breakers in accordance with “Section 29— Switchgear and
Switchboard Assemblies: Low and Medium Voltage” on page 48 or
“Section 12—Circuit Breakers: Low Voltage Power (ANSI/IEEE C37.13)”
on page 20 as appropriate.
NOTE: Typically, Molded Case Circuit Breakers are used—refer to
“Section 11—Circuit Breakers: Low Voltage Insulated Case/Molded
Case” on page 17. If ANSI C37.13 Power Circuit Breakers are used, refer
to “Section 12—Circuit Breakers: Low Voltage Power (ANSI/IEEE
C37.13)” on page 20.
© 2000-2001 Schneider Electric All Rights Reserved
39
Procedures for Startup and Commissioning of Electrical Equipment
Section 23—Motor Starters: Medium Voltage
SECTION 23—MOTOR STARTERS:
MEDIUM VOLTAGE
Bulletin No. 018IB0001R5/01
May 2001
A. Visual and Mechanical Inspection
1. Document equipment nameplate data on test report. Verify that
equipment nameplate ratings are in accordance with the final approved
or record drawings and specifications.
2. Inspect the physical, electrical, and mechanical condition of the
equipment.
3. Confirm that lubricants have been correctly applied at the manufacturer's
recommended locations, identified in their service bulletin.
4. Use the calibrated torque wrench method to verify that the tightness of
accessible bolted connections and/or cable connections are in
accordance with the manufacturer's published data. If no manufacturer's
data is available, use the values in Table 1 on page 57.
5. Test all electrical and mechanical interlock systems for correct operation
and sequencing.
6. Inspect insulators for evidence of damage or contaminated surfaces.
7. Verify that barriers and shutters are installed and operating correctly.
8. Exercise all active components, and confirm that all indicating devices are
operating correctly.
9. Inspect the contactors.
(a) Verify mechanical operation.
(b) Inspect and adjust contact gap, wipe and alignment in accordance
with manufacturer's published data.
(c) Use the calibrated torque wrench method to verify that the tightness
of accessible bolted connections and/or cable connections are in
accordance with the manufacturer's published data. If no
manufacturer's data is available, use the values in Table 1 on page 57.
10. Compare the overload protection rating with the motor nameplate to
verify that the size is correct. Set adjustable or programmable devices
according to the protective device coordination study, if available
B. Electrical Tests
NOTE: When performing dielectric tests, you must disconnect all Instrument
and Control Transformers, Arresters, TVSS units, and other sensitive
electronic equipment that may cause erroneous results or cause damage to
equipment that is not rated in accordance with the equipment standards.
Verify the proper selection and operation of the electrical test equipment.
Record the date of the last calibration date and the date re-calibration is due.
CAUTION
HAZARD OF INJURY OR EQUIPMENT
DAMAGE
• DC LIM Hi-Pot testing of vacuum breakers is
not recommended.
• Read the label on the vacuum bottle for
precautions to take against the danger of xray emission while performing AC Hi-Pot
testing.
Failure to follow these instructions can
result in injury or equipment damage.
40
1. Perform a control wiring performance test. Use the elementary diagrams
to identify each remote control and protective device. Verify that each
control feature performs satisfactorily.
2. Perform insulation-resistance tests on contactor, phase-to-ground,
phase-to-phase, and across the open contacts for one minute in
accordance with Table 2 on page 59.
3. Perform a vacuum bottle integrity test (overapologetic) test using AC HiPot across each vacuum bottle, with the breaker in the open position in
strict accordance with manufacturer's instructions. Contact the
manufacturer if repeated consistent breakdowns are encountered.
4. Test ground-fault protection by injecting a primary current through the
sensor. Confirm pickup level and timing.
5. Perform setup and testing on protective relaying in accordance with the
manufacturer's published data.
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
Procedures for Startup and Commissioning of Electrical Equipment
Section 23—Motor Starters: Medium Voltage
6. Verify that the cubicle space heat operates properly.
C. Optional Tests
1. Perform an insulation-resistance test in accordance with Table 2 on page
59. For devices with solid-state components, refer to the manufacturer's
published data.
2. Perform ratio and polarity tests on all current and voltage transformers in
accordance with “Section 32—Transformers, Instrument” on page 53.
3. Test control power transformers in accordance with “Section 29—
Switchgear and Switchboard Assemblies: Low and Medium Voltage” on
page 48.
4. Energize the contactor using an auxiliary source. Adjust the armature to
minimize operating vibration where applicable.
5. Test circuit breakers in accordance with “Section 14—Circuit Breakers:
Medium Voltage Vacuum” on page 24 or “Section 13—Circuit Breakers:
Medium Voltage SF6” on page 22.
6. Perform an overapologetic test, as applicable, in accordance with the
manufacturer's published data or Table 5 on page 61. The test voltage
shall be applied for one minute.
7. Measure contact resistance.
© 2000-2001 Schneider Electric All Rights Reserved
41
Procedures for Startup and Commissioning of Electrical Equipment
Section 24—Oil Switches: Medium Voltage
SECTION 24—OIL SWITCHES: MEDIUM
VOLTAGE
Bulletin No. 018IB0001R5/01
May 2001
A. Visual and Mechanical Inspection
1. Document equipment nameplate data on the test report. Verify that
equipment nameplate ratings are in accordance with the final approved
or record drawings and specifications, if available.
2. Inspect the physical and mechanical condition of the equipment.
3. Inspect anchorage, alignment, and grounding.
4. Perform all mechanical operation and contact alignment tests on both the
switch and its operating mechanism.
5. Test all electrical and mechanical interlock systems for correct operation
and sequencing.
6. Use the calibrated torque wrench method to verify that the tightness of
accessible bolted connections and/or cable connections are in
accordance with the manufacturer's published data. If no manufacturer's
data is available, use the values in Table 1 on page 57.
7. Verify that the insulating oil level is correct.
8. Verify that fuse sizes and types correspond to the final approved or record
drawings.
B. Electrical Tests
NOTE: When performing dielectric tests, you must disconnect all Instrument
and Control Transformers, Arresters, TVSS units, and other sensitive
electronic equipment that may cause erroneous results or cause damage to
equipment that is not rated in accordance with Switchgear industry
standards.
Verify the proper selection and operation of the electrical test equipment.
Record the date of the last calibration date and the date re-calibration is due.
1. Remove a sample of insulating liquid in accordance with ASTM D-923.
The sample shall be tested for the following:
Dielectric breakdown voltage: ASTM D-877.
2. Perform insulation-resistance tests pole-to-pole, pole-to-ground, and
across open poles for one minute. The test voltage should be in
accordance with manufacturer's published data or Table 2 on page 59.
C. Optional Tests
1. Perform an insulation-resistance test in accordance with Table 2 on page
59. Do not perform this test on wiring connected to solid-state
components.
2. Remove a sample of insulating liquid in accordance with ASTM D-923.
The sample shall be tested for the following:
(a) Dielectric breakdown voltage: ASTM D-877 and/or ASTM D-1816.
(b) Acid neutralization number: ASTM D-974.
(c) Specific gravity: ASTM D-1298.
(d) Interfacial tension: ASTM D-971 or ASTM D-2285.
(e) Color: ASTM D-1500.
(f) Visual Condition: ASTM D-1524.
(g) Parts per million water: ASTM D-1533. Required on 25 kV or higher
voltages and on all silicone-filled units.
(h) Measure dissipation factor or power factor in accordance with ASTM
D-924.
42
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
SECTION 25—PROTECTIVE RELAYS
Procedures for Startup and Commissioning of Electrical Equipment
Section 25—Protective Relays
A. Visual and Mechanical Inspection
1. Document equipment nameplate data on the test report. Verify that
equipment nameplate ratings are in accordance with final approved or
record drawings and specifications, if available.
2. Inspect relays and cases for physical damage. If appropriate, remove
shipping restraint material. Relay inspections and testing shall be
performed in strict compliance with the manufacturer’s instructions.
3. Tighten case connections. Inspect the cover for the correct gasket seal.
Clean the cover glass. Inspect the shorting hardware, connection
paddles, and/or knife switches. Remove any foreign material from the
case. Verify target reset.
4. Inspect the relay for foreign material. On electromechanical relays,
inspect disk slots of the damping and electromagnets, verify disk
clearance, inspect spiral spring convolutions, and inspect disk and
contacts for freedom of movement and correct travel, and verify the
tightness of mounting hardware and connections.
5. Mechanically test the operation of electromechanical relays.
6. Set relays in accordance with the coordination study supplied by the
owner, if available. If a coordination study is not available, the customer
will be responsible for setting relays.
B. Electrical Tests
Verify the proper selection and operation of the electrical test equipment.
Record the date of the last calibration date and the date re-calibration is due.
1. Perform an insulation-resistance test on each circuit-to-frame. Do not
perform this test on solid state relays.
2. Inspect targets and indicators.
3. Verify the operation of all light-emitting diode indicators, if applicable.
4. Set contrast for liquid-crystal display readouts, if applicable.
5. Control Verification:
Verify that each of the relay contacts performs its intended function in the
control scheme, including breaker trip tests, close inhibit tests, 86 lockout
tests, and alarm functions.
6. Verify that all pickup/dropout parameters are on each operating element.
7. Verify timing at three points on the time dial curve.
C. Optional Tests
System Test: After the equipment is initially energized, measure the
magnitude and phase angle of all inputs and compare to expected values, in
order to prove that the equipment has proper polarity and is correctly
connected. (Optional second trip if the equipment cannot be energized)
© 2000-2001 Schneider Electric All Rights Reserved
43
Procedures for Startup and Commissioning of Electrical Equipment
Section 26—Step Voltage Regulators
SECTION 26—STEP VOLTAGE
REGULATORS
Bulletin No. 018IB0001R5/01
May 2001
A. Visual and Mechanical Inspection
1. Document equipment nameplate data on test report. Verify that
equipment nameplate ratings are in accordance with the final approved
or record drawings and specifications.
2. Inspect the physical and mechanical condition of the equipment.
3. Inspect impact recorder prior to unloading regulator, if applicable.
4. Verify removal of any shipping bracing and vent plugs after final
placement.
5. Verify that auxiliary devices operate correctly.
6. Using the calibrated torque-wrench method, verify that the tightness of
accessible bolted electrical connections is in accordance with the
manufacturer's published data. If no manufacturer's data is available, use
the values in Table 1 on page 57.
7. Verify that the motor and drive train operate correctly, and automatic
motor cut-off at maximum lower and maximum raise.
8. Verify appropriate liquid level in all tanks and bushings.
9. Perform specific inspections and mechanical tests as recommended by
the manufacturer.
10. Verify equipment grounding.
B. Electrical Tests
NOTE: When performing dielectric tests, you must disconnect all Instrument
and Control Transformers, Arresters, TVSS units, and other sensitive
electronic equipment that may cause erroneous results or cause damage to
equipment that is not rated in accordance with the equipment standards.
Verify the proper selection and operation of the electrical test equipment.
Record the date of the last calibration date and the date re-calibration is due.
1. Perform insulation-resistance tests on each winding-to-ground in the
neutral position with the test voltage in accordance with Table 2 on page 59.
2. Perform special tests and adjustments as recommended by the
manufacturer.
3. Perform a turns ratio test on each voltage step position. Verify that the
indicator correctly identifies all tap positions.
4. Verify that the voltage range limiter operates accurately.
5. Verify functioning and accuracy of bandwidth, time delay, voltage, and
line-drop compensation adjustments.
6. Perform a dielectric breakdown test with a field tester.
C. Optional Tests
1. Remove a sample of insulating liquid in the main tank or common tank in
accordance with ASTM D-923. The sample shall be tested for the
following:
(a) Dielectric breakdown voltage: ASTM D-877 and/or ASTM D-1816.
(b) Acid neutralization number: ASTM D-974.
(c) Specific gravity: ASTM D-1298.
(d) Interfacial tension: ASTM D-971 or ASTM D-2285.
(e) Color: ASTM D-1500.
(f) Visual condition: ASTM D-1524.
44
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
Procedures for Startup and Commissioning of Electrical Equipment
Section 26—Step Voltage Regulators
2. Remove a sample of insulating liquid in the tap-changer tank in
accordance with ASTM D-923.The sample shall be tested for the
following:
(a) Dielectric breakdown voltage: ASTM D-877.
(b) Color: ASTM D-1500.
(c) Visual condition: ASTM D-1524.
© 2000-2001 Schneider Electric All Rights Reserved
45
Procedures for Startup and Commissioning of Electrical Equipment
Section 27—Surge Arresters: Low Voltage Surge Protection Devices
SECTION 27—SURGE ARRESTERS:
LOW VOLTAGE SURGE PROTECTION
DEVICES
Bulletin No. 018IB0001R5/01
May 2001
A. Visual and Mechanical Inspection
1. Document equipment nameplate data on the test report. Verify that
equipment nameplate ratings are in accordance with the final approved
or record drawings and specifications.
2. Inspect the physical and mechanical condition of the equipment.
3. Inspect for correct mounting and adequate clearances.
4. Using the calibrated torque-wrench method, verify that the tightness of
accessible bolted electrical connections is in accordance with the
manufacturer's published data. If no manufacturer's data is available, use
the values in Table 1 on page 57.
5. Verify that the ground lead on each device is individually attached to a
ground bus or ground electrode.
46
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
SECTION 28—SURGE ARRESTERS:
MEDIUM AND HIGH VOLTAGE SURGE
PROTECTION DEVICES
Procedures for Startup and Commissioning of Electrical Equipment
Section 28—Surge Arresters: Medium and High Voltage Surge Protection Devices
A. Visual and Mechanical Inspection
1. Document equipment nameplate data on the test report. Verify that
equipment nameplate ratings are in accordance with the final approved
or record drawings and specifications.
2. Inspect the physical and mechanical condition of the equipment.
3. Inspect for correct mounting and adequate clearances.
4. Using the calibrated torque-wrench method, verify that the tightness of
accessible bolted electrical connections is in accordance with the
manufacturer's published data. If no manufacturer's data is available, use
the values in Table 1 on page 57.
5. Verify that the ground lead on each device is individually attached to a
ground bus or ground electrode.
6. Verify that the stroke counter, if present, is correctly mounted and
electrically connected.
© 2000-2001 Schneider Electric All Rights Reserved
47
Procedures for Startup and Commissioning of Electrical Equipment
Section 29— Switchgear and Switchboard Assemblies: Low and Medium Voltage
SECTION 29— SWITCHGEAR AND
SWITCHBOARD ASSEMBLIES: LOW
AND MEDIUM VOLTAGE
Bulletin No. 018IB0001R5/01
May 2001
A. Visual and Mechanical Inspection
1. Document equipment nameplate data on the test report.
2. Verify that all of the manufacturer’s intended documentation is either
stored with the equipment or in the operator’s possession. This include,
but is not limited to, all elementary diagrams, wiring diagrams, and
operational and service manuals for each component within the
equipment.
3. Inspect the physical, electrical, and mechanical condition of the
equipment and all components in accordance with the applicable section
of the documentation.
4. Confirm that lubricants have been correctly applied at the manufacturer's
recommended locations.
5. Verify appropriate anchorage, required area clearances, physical
damage, and correct alignment and cleanliness.
6. Inspect all doors, panels, and sections for paint, dents, scratches, fit, and
missing hardware.
7. Verify that fuse and/or circuit breaker sizes and types correspond to
drawings and coordination study, if available, as well as to the circuit
breaker's address for microprocessor-communication packages.
8. Verify that final approved or record drawings have the correct revision and
date in accordance with customer and supplier records.
9. Verify that current and potential transformer ratios correspond to
drawings. Perform visual and mechanical inspections on instrument
transformers in accordance with “Section 32—Transformers, Instrument”
on page 53.
10. Using the calibrated torque-wrench method, verify that the tightness of
accessible bolted electrical connections is in accordance with the
manufacturer's published data. If no manufacturer's data is available, use
the values in Table 1 on page 57.
11. Confirm correct operation and sequencing of electrical and mechanical
interlock systems.
(a) Attempt closure on locked-open devices. Attempt to open lockedclosed devices.
(b) Make key exchange with devices operated in off-normal positions.
12. Inspect insulators for evidence of physical damage or contaminated
surfaces.
13. Verify that the barriers and shutters are installed and operating correctly.
14. Exercise all active components.
15. Inspect all mechanical indicating devices for correct operation.
16. Verify that filters are in place and/or vents are clear.
17. Inspect control power transformers.
(a) Inspect the transformers for physical damage, cracked insulation,
broken leads, tightness of connections, defective wiring, and overall
general condition.
(b) Verify that primary and secondary fuse ratings or circuit breakers
match the final approved or record drawings.
(c) Verify that both primary and secondary tap connections are in
accordance with both the manufacturer's recommendations and the
elementary diagrams.
48
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
Procedures for Startup and Commissioning of Electrical Equipment
Section 29— Switchgear and Switchboard Assemblies: Low and Medium Voltage
18. Set relays in accordance with the coordination study supplied by owner,
if available. If a coordination study is not available, the customer will be
responsible for setting relays.
19. Verify that drawout disconnecting and grounding contacts and interlocks
function correctly.
20. Verify that customer connections to remote power, operators, interlocks,
and indicators have been made.
B. Electrical Tests
NOTE: When performing dielectric tests, you must disconnect all Instrument
and Control Transformers, Arresters, TVSS units, and other sensitive
electronic equipment that may cause erroneous results or cause damage to
equipment that is not rated in accordance with Switchgear or Switchboard
industry standards.
Verify the proper selection and operation of the electrical test equipment.
Record the date of the last calibration date and the date re-calibration is due.
1. Perform insulation-resistance tests on each bus section, phase-to-phase
and phase-to-ground, at the minimum dc test voltage appropriate for the
equipment’s Maximum Rated Voltage in accordance with Table 2 on page
59. Record the resistances. If the resistance is lower than the
recommended values in Table 2 on page 59, visually inspect the
equipment for cleanliness and other potential causes. If the visual
inspection does not reveal the causes, recommend for the contractor to
dry the equipment for a minimum of 4 hours using heat and fans. Then
re-measure. If low readings persist after vigorous drying, contact the
manufacturer.
2. Perform a control wiring performance test by applying control voltage.
Verify that the equipment operates as intended.
3. Perform a phasing check on double-ended switchgear (low voltage) to
insure correct bus phasing from each source. {Optional second visit is
required if equipment is not energized.}
4. Verify correct function of control transfer relays located in switchgear with
multiple power sources.
5. Verify operation of switchgear/switchboard heaters.
6. Test protective relays in accordance with “Section 25—Protective Relays”
on page 43.
7. Test individual circuit breakers or switches in accordance with the
applicable section of this document:
Section Reference
© 2000-2001 Schneider Electric All Rights Reserved
Page
“Section 4—Air Switches: Low Voltage (Bolted Pressure, QMB, or Equal)”
8
“Section 5—Air Switches: Medium Voltage, Metal-Enclosed”
10
“Section 6—Air Switches: High and Medium Voltage, Open Style”
12
“Section 11—Circuit Breakers: Low Voltage Insulated Case/Molded Case”
17
“Section 12—Circuit Breakers: Low Voltage Power (ANSI/IEEE C37.13)”
20
“Section 13—Circuit Breakers: Medium Voltage SF6”
22
“Section 14—Circuit Breakers: Medium Voltage Vacuum”
24
“Section 24—Oil Switches: Medium Voltage”
42
49
Procedures for Startup and Commissioning of Electrical Equipment
Section 29— Switchgear and Switchboard Assemblies: Low and Medium Voltage
Bulletin No. 018IB0001R5/01
May 2001
8. Perform a dielectric test (Hi-Pot) on each bus section, each phase to
ground with phases not under test grounded, in accordance with Table 5
on page 61 or the manufacturer’s published data.
NOTE: This test is standard on medium voltage switchgear only. It is
optional on all low voltage switchgear and switchboards.
C. Optional Tests
1. Perform tests on all instrument transformers in accordance with “Section
32—Transformers, Instrument” on page 53.
2. Perform insulation-resistance tests in accordance with Table 2 on page
59 on all control wiring. Do not perform this test on wiring connected to
solid-state components.
3. Perform ground-resistance tests in accordance with “Section 19—
Grounding Systems” on page 32.
4. Perform the following tests on control power transformers.
(a) Perform insulation-resistance tests. Perform measurements from
winding-to-winding and each winding-to-ground. Test voltages shall be
in accordance with Table 2 on page 59 unless otherwise specified by
the manufacturer.
(b) Inspect primary winding tab connections and secondary terminal
connections for correct wiring for primary and secondary voltages
involved.
(c) Perform a secondary wiring integrity test. Disconnect the transformer at
secondary terminals and connect secondary wiring to correct
secondary voltage. Confirm potential at all device
(d) Verify correct secondary voltage by energizing primary winding with
system voltage. Measure secondary voltage with the secondary wiring
disconnected.
5. Perform a contact resistance test through all bus joints, using a low
resistance ohmmeter.
6. Perform the following tests on potential transformers.
(a) Perform a secondary wiring integrity test. Disconnect transformer at
secondary terminals and connect secondary wiring to correct
secondary voltage. Confirm correct potential at all devices.
(b) Verify secondary voltage by energizing primary winding with system
voltage. Measure secondary voltage with the secondary wiring
disconnected.
7. Perform tests on ground fault protection system in accordance with
“Section 17—Ground-Fault Protection Systems” on page 29.
8. Perform current tests by primary injection on all metering and relaying
circuits, other than ground fault, in each section of switchgear with
magnitudes, such that a minimum of 1.0 ampere flows in the secondary
circuit. Verify that the secondary current flow at each device is intended
in the current circuit.
9. Determine the accuracy of all {Analog} meters per “Section 7—Analog
Metering” on page 13.
50
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
Procedures for Startup and Commissioning of Electrical Equipment
May 2001
Section 30—Transformers: Dry Type: All Voltages - Large (Greater Than 167 Single-Phase and 500KVA Three-Phase)
SECTION 30—TRANSFORMERS: DRY
TYPE: ALL VOLTAGES - LARGE
(GREATER THAN 167 SINGLE-PHASE
AND 500KVA THREE-PHASE)
A. Visual and Mechanical Inspection
1. Document equipment nameplate data on the test report. Verify that
transformer nameplate ratings are in accordance with final approved or
record drawings and specifications, if available.
2. Inspect the physical and mechanical condition of the equipment.
3. Verify that the control and alarm settings on temperature indicators are as
specified, if the settings are available.
4. Verify that cooling fans operate correctly and that fan motors have correct
overcurrent protection.
5. Using the calibrated torque-wrench method, verify that the tightness of
accessible bolted electrical connections is in accordance with the
manufacturer's published data. If no manufacturer's data is available, use
the values in Table 1 on page 57.
6. Perform specific inspections and mechanical tests as recommended by
the manufacturer.
7. Make a close examination for shipping brackets or fixtures that may not
have been removed during installation. Insure that resilient mounts are
free.
8. Verify that winding core, frame, and enclosure groundings are correct.
9. Verify that as-left tap connections are as specified.
10. Verify that customer connections have been made to remote power and
operators.
B. Electrical Tests
NOTE: When performing dielectric tests, you must disconnect all Instrument
and Control Transformers, Arresters, TVSS units, and other sensitive
electronic equipment that may cause erroneous results or cause damage to
equipment that is not rated in accordance industry standards.
Verify the proper selection and operation of the electrical test equipment.
Record the date of the last calibration date and the date re-calibration is due.
1. Perform insulation-resistance tests winding-to-winding and each windingto-ground, with test voltage in accordance with Table 3 on page 59. Test
duration shall be for ten minutes with resistances tabulated at 30
seconds, one minute, and ten minutes.
2. Perform a transformer turns-ratio test on all tap connections. Verify that
winding polarities are in accordance with nameplate.
C. Optional Tests
1. For 5kV and above, perform power-factor or dissipation-factor (excitationcurrent) tests in accordance with the test equipment manufacturer's
instructions.
2. Measure the resistance of each winding at each tap connection.
3. Verify that the core is grounded. If the core is insulated and a removable
core ground strap is available, perform a core insulation-resistance test at
500 volts dc.
© 2000-2001 Schneider Electric All Rights Reserved
51
Procedures for Startup and Commissioning of Electrical Equipment
Section 31—Transformers: Dry Type - Small (167KVA Single-Phase, 500KVA Three-Phase, and Smaller)
SECTION 31—TRANSFORMERS: DRY
TYPE - SMALL (167KVA SINGLE-PHASE,
500KVA THREE-PHASE, AND SMALLER)
Bulletin No. 018IB0001R5/01
May 2001
A. Visual and Mechanical Inspection
1. Document equipment nameplate data on the test report. Verify that
transformer nameplate ratings are in accordance with final approved or
record drawings and specifications, if available.
2. Inspect the physical and mechanical condition of the equipment.
3. Verify that resilient mounts are free and that any shipping brackets have
been removed.
B. Electrical Tests
NOTE: When performing dielectric tests, you must disconnect all Instrument
and Control Transformers, Arresters, TVSS units, and other sensitive
electronic equipment that may cause erroneous results or cause damage to
equipment that is not rated in accordance industry standards.
Verify the proper selection and operation of the electrical test equipment.
Record the date of the last calibration date and the date re-calibration is due.
1. Perform an insulation-resistance test. Measurements shall be made from
winding-to-winding and each winding-to-ground. Test voltages and
minimum resistance shall be in accordance with Table 3 on page 59.
Results should be temperature corrected in accordance with Table 4 on
page 60.
2. Using a TTR, verify that transformer winding turns-ratio measurements
and polarities are in accordance with the nameplate.
3. Verify that as-left tap connections are as specified.
52
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
SECTION 32—TRANSFORMERS,
INSTRUMENT
Procedures for Startup and Commissioning of Electrical Equipment
Section 32—Transformers, Instrument
A. Visual and Mechanical Inspection
1. Verify equipment nameplate ratings are in accordance with the final
approved or record drawings and specifications, if available.
2. Inspect the physical and mechanical condition of the equipment.
3. Verify correct connection of transformers with system requirements.
4. Verify that adequate clearances exist between primary and secondary
circuit wiring.
5. Using the calibrated torque-wrench method, verify that the tightness of
accessible bolted electrical connections is in accordance with the
manufacturer's published data. If no manufacturer's data is available, use
the values in Table 1 on page 57.
6. Verify that all required grounding and shorting connections provide
contact.
7. Verify that all shorting blocks are in the correct position, either grounding
or open, as required.
8. Verify correct operation of transformer drawout mechanism and
grounding operation.
9. Verify correct primary and secondary fuse sizes for potential
transformers.
B. Electrical Tests - Current Transformers
Verify the proper selection and operation of the electrical test equipment.
Record the date of the last calibration date and the date re-calibration is due.
1. Perform an insulation-resistance test of the current transformer and
wiring-to-ground at 500 volts dc. Do not perform this test on solid-state
devices. Resistance readings should be consistent with Table 2 on page
59 for a test voltage of 500 volts dc.
2. Perform a polarity test of each current transformer.
3. Perform a ratio-verification test using the voltage or current method in
accordance with ANSI C5XVIII.1 (IEEE Guide for Field Testing of
Relaying Current Transformers).
C. Optional Tests - Current Transformers
1. Perform an excitation test on transformers used for relaying applications
in accordance with ANSI C5XVIII.1. (IEEE Guide for Field Testing of
Relaying Current Transformers).
2. Measure current circuit burdens at transformer terminals and determine
the total burden.
3. When applicable, perform insulation-resistance and dielectric withstand
tests on the primary winding with secondary grounded. Test voltages
shall be in accordance withTable 5 on page 61 and Table 8 on page 66
respectively.
© 2000-2001 Schneider Electric All Rights Reserved
53
Procedures for Startup and Commissioning of Electrical Equipment
Section 32—Transformers, Instrument
Bulletin No. 018IB0001R5/01
May 2001
D. Electrical Tests - Potential Transformers
Verify the proper selection and operation of the electrical test equipment.
Record the date of the last calibration date and the date re-calibration is due.
1. Perform insulation-resistance tests winding-to-winding and each windingto-ground. Test voltages shall be applied for one minute in accordance
with Table 2 on page 59. Do not perform this test with solid-state devices
connected.
2. Perform a polarity test on each transformer to verify the polarity marks or
H1-X1 relationship as applicable.
E. Optional Tests - Potential Transformers
1. Measure potential circuit burdens at transformer terminals and determine
the total burden.
2. Perform a dielectric withstand test on the primary windings with the
secondary windings connected to ground. The dielectric voltage shall be
in accordance with Table 6 on page 62. The test voltage shall be applied
for one minute.
54
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
SECTION 33—TRANSFORMERS:
LIQUID-FILLED: ALL VOLTAGES
Procedures for Startup and Commissioning of Electrical Equipment
Section 33—Transformers: Liquid-Filled: All Voltages
A. Visual and Mechanical Inspection
1. Document equipment nameplate data on the test report. Verify that
transformer nameplate ratings are in accordance with final approved or
record drawings and specifications, if available.
2. Inspect the physical and mechanical condition of the equipment.
3. Inspect impact recorder prior to unloading, if applicable.
4. Verify that alarm, control, and trip settings on temperature indicators are
as specified.
5. Verify that cooling fans and pumps operate correctly and that fan and
pump motors have correct overcurrent protection.
6. Verify operation of all alarm, control, and trip circuits from temperature
and level indicators, pressure relief device, and fault pressure relay.
(Optional second visit if the equipment cannot be energized.)
7. Using the calibrated torque-wrench method, verify that the tightness of
accessible bolted electrical connections is in accordance with the
manufacturer's published data. If no manufacturer's data is available, use
the values in Table 1 on page 57.
8. Verify correct liquid level in all tanks and bushings.
9. Verify that positive pressure is maintained on nitrogen-blanketed
transformers.
10. Perform specific inspections and mechanical tests as recommended by
the manufacturer.
11. Verify correct equipment grounding.
12. Test load tap-changer in accordance with “Section 26—Step Voltage
Regulators” on page 44, if applicable.
13. Verify removal of any shipping bracing after final placement.
B. Electrical Tests
NOTE: When performing dielectric tests, you must disconnect all Instrument
and Control Transformers, Arresters, TVSS units, and other sensitive
electronic equipment that may cause erroneous results or cause damage to
equipment that is not rated in accordance industry standards.
Verify the proper selection and operation of the electrical test equipment.
Record the date of the last calibration date and the date re-calibration is due.
1. Perform insulation-resistance tests, winding-to-winding, and each
winding-to-ground with the test voltage in accordance with Table 3 on
page 59. Test duration shall be for ten minutes with resistances tabulated
at 30 seconds, one minute, and ten minutes.
2. Perform a transformer turns-ratio test on all no-load tap-changer
positions and all load tap-changer positions. Verify that tap setting is as
specified. Verify that winding polarities are in accordance with nameplate.
C. Optional Tests
1. Perform insulation power-factor/dissipation-factor tests on all windings
and correct to 20° C in accordance with the test equipment
manufacturer's instructions.
2. Perform power-factor/dissipation-factor tests (or hot collar watts-loss
tests) on bushings and correct for 20° C in accordance with the test
equipment manufacturer's instructions.
3. Perform excitation-current tests in accordance with the test equipment
manufacturer's instructions.
© 2000-2001 Schneider Electric All Rights Reserved
55
Procedures for Startup and Commissioning of Electrical Equipment
Section 33—Transformers: Liquid-Filled: All Voltages
Bulletin No. 018IB0001R5/01
May 2001
4. Remove a sample of insulating liquid in accordance with ASTM D-923.
The sample shall be tested for the following:
(a) Dielectric breakdown voltage: ASTM D-877 and/or ASTM D-1816.
(b) Acid neutralization number: ASTM D-974.
(c) Specific gravity: ASTM D-1298.
(d) Interfacial tension: ASTM D-971 or ASTM D-2285.
(e) Color: ASTM D-1500.
(f) Visual Condition: ASTM D-1524.
(g) Parts per million water: ASTM D-1533. Required on 25 kV or higher
voltages and on all silicone-filled units.
(h) Measure dissipation factor or power factor in accordance with ASTM
D-924.
5. Remove a sample of insulating liquid in accordance with ASTM D3613
and perform dissolved gas analysis (DGA) in accordance with ANSI/IEEE
C5XVI4 or ASTM D-3612.
6. If a core ground strap is accessible, measure the core insulation
resistance at 500 Vdc.
7. Measure the insulation resistance of each high-voltage winding in each
no-load tap-changer position. Measure the resistance of each lowvoltage winding in each load tap-changer position, if applicable.
56
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
TABLES
Procedures for Startup and Commissioning of Electrical Equipment
Tables
Table 1:
US Standard Bolt Torques for Bus and Cable Connections
Heat-Treated Steel - Cadmium or Zinc Plated
Grade
SAE 1 & 2
Minimum Tensile
(P.S.I.)
64K
SAE 5
SAE 7
105K
Bolt Diameter
In Inches
SAE 8
133K
150K
Torque (Foot Pounds)
1/4
4.0
5.6
8.0
8.4
5/16
7.2
11.2
15.2
17.6
3/8
12.0
20.0
27.2
29.6
7/16
19.2
32.0
44.0
48.0
1/2
29.6
48.0
68.0
73.6
9/16
42.4
70.4
96.0
105.6
5/8
59.2
96.0
133.6
144.0
3/4
96.0
160.0
224.0
236.8
7/8
152.0
241.6
352.0
378.4
1.0
225.6
372.8
528.0
571.2
Silicon Bronze Fasteners1
Torque (Foot-Pounds)
Bolt Diameter in Inches
Non-lubricated
5/16
15
Lubricated
10
3/8
20
14
1/2
40
25
5/8
55
40
3/4
70
60
1 Bronze alloy bolts shall have a minimum tensile strength of 70,000 pounds per square inch.
Aluminum Alloy Fasteners2
Torque (Foot-Pounds)
Bolt Diameter in Inches
Lubricated
5/16
8.0
3/8
11.2
1/2
20.0
5/8
32.0
3/4
48.0
2 Aluminum alloy bolts shall have a minimum tensile strength of 55,000 pounds per square inch.
Stainless Steel Fasteners3
Torque (Foot-Pounds)
Bolt Diameter in Inches
Un-coated
5/16
14
3/8
25
1/2
45
5/8
60
3/4
90
3 Bolts, cap screws, nuts, flat washers, locknuts: 18-8 alloy. Belleville washers: 302 alloy.
© 2000-2001 Schneider Electric All Rights Reserved
57
Procedures for Startup and Commissioning of Electrical Equipment
Tables
Bulletin No. 018IB0001R5/01
May 2001
Recommended Torque Values for Field Installed Wiring
Terminal
Socket Size Across Flats (inches)
Torque (lb-in.)
1/4
180
Incoming lugs
Branch lugs
Neutral lugs
Ground lugs
5/16
250
3/8
340
1/2 (see exception on next line)
450
1/2 (3/0–750 kcmil)
620
Multiple Conductor Neutral and/or
Ground Bar
Screw Type
Conductor Size
Torque (lb-in.)
#14-10CU, #12-10AL
20
Lug Wire Range
#14-4
Slotted head
#14-1/0
#8 CU-AL
25
#6-4 CU-AL
35
#14-8 CU-AL
36
#6-1/0 CU-AL
45
ALL
100
ALL
275
Socket head
#6-300 kcmil
Aluminum lugs are suitable for use with copper or aluminum conductors. Copper lugs are suitable
for use with copper conductors only.
Use 75 °C copper or aluminum conductors except as marked on or near installed circuit breakers
or switches.
Hardware that secures electrical joints must be torqued to the values shown
in the following table:
Recommended Torque Values for Electrical Bus Joints
Description
of Hardware
Bolt Diameter
(inches)
Carriage Bolt
Grade 5. Standard or Heavy
Hex Nut.
One Conical Washer
Washer O.D.
(inches)
lbs-inch
Carriage Bolt
Grade 5. Nut
and Conical
Washer Assy.
lbs-inch
0.25 (1/4)
50–75
0.31 (5/16)
80–125
0.38 (3/8)
175–225
Nut and
conical
washer assy.
lbs-inch
2.25
3.00
58
Washer O.D.
(inches)
Standard or
heavy hex
nut. One
conical
washer
lbs-inch
250–350
lbs-inch
0.90
145–160
0.87
250–280
0.87
250–280
1.00
130–150
1.00
130–150
1.25
780–900
(65–75 lbs-ft)
Washer O.D.
(inches)
175–225
1.25
0.50 (1/2)
Hex Head Bolt Grade 5,
Standard or Heavy Hex Nut,
2 Conical Washers
Square Head Bolt
Grade 5
250–350
2.25
3.00
1.25
450–550
(38-46 lbs-ft)
2.25
780–900
(65–75 lbs-ft)
3.00
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
Procedures for Startup and Commissioning of Electrical Equipment
Tables
Table 2:
Insulation-Resistance Test Voltage for Electrical Apparatus
and Systems
Voltage Rating
Minimum dcTest Voltage
Recommended Minimum
Insulation Resistance In
Megohms
0 - 250
500
50
251 - 600
1,000
100
601 - 5,000
2,500
1,000
5,001 - 8,000
2,500
2,000
8,001 - 15,000
2,500
5,000
15,001 - 25,000
5,000
20,000
25,001 - 69,000
15,000
100,000
Reprinted with permission of the InterNational Electrical Testing Association Copyright 1997
Note: See Table 4 for Insulation Resistance Test Conversion Factors
Table 3:
Transformer Insulation-Res. Acceptance Test Voltage and
Min. Results
Transformer Insulation Resistance Test Voltages
Transformer Winding Rated Voltage
Minimum DC Test Voltage
0-600
1000
601-5000
2500
>5000
5000
Recommended Minimum Transformer Insulation Resistance Results:
In the absence of consensus standards for minimum acceptable transformer insulation resistance,
the NETA Standards Review Council recommends the use of the following formula. Although the
origin of this formula is not identified, NETA recognizes its wide use in the electrical testing industry.
CE
IR kVA
IR = Minimum recommended one minute insulation resistance
C = Constant
E = Phase-to-phase voltage for delta connected windings; phase-to-neutral voltage for star
connected windings.
kVA = Rated kVA of transformer
Values of C @ 20°C for 60 Hz transformers
Oil-filled
C = 1.5
Dry-type
C = 30
Reprinted from Acceptance Testing Specifications for Electrical Power Distribution Equipment and
Systems (NETA ATS-1999).with permission of the InterNational Electrical Testing Association.
© 2000-2001 Schneider Electric All Rights Reserved
59
Procedures for Startup and Commissioning of Electrical Equipment
Tables
Table 4:
Bulletin No. 018IB0001R5/01
May 2001
Insulation Resistance Conversion Factors
For Conversion of Test Temperature to 20°C
Temperature
Multiplier
°C
°F
Apparatus
Containing
Immersed Oil
Insulation
0
32
0.25
Apparatus
Containing Solid
Insulation
0.40
5
41
0.36
0.45
10
50
0.50
0.50
15
59
0.75
0.75
20
68
1.00
1.00
25
77
1.40
1.30
30
86
1.98
1.60
35
95
2.80
2.05
40
104
3.95
2.50
45
113
5.60
3.25
50
122
7.85
4.00
55
131
11.20
5.20
60
140
15.85
6.40
65
149
22.40
8.70
70
158
31.75
10.00
75
167
44.70
13.00
80
176
63.50
16.00
Reprinted from Acceptance Testing Specifications for Electrical Power Distribution Equipment and
Systems (NETA ATS-1999).with permission of the InterNational Electrical Testing Association.
60
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
Procedures for Startup and Commissioning of Electrical Equipment
Tables
Table 5:
Power Frequency Dielectric Withstand Test
Dielectric tests for UL-891 Switchboards & I-Line Busway
Rated Voltage AC
Power Frequency Field Test Voltage
for 60 sec. duration
120 Vac
930 Vac
208 Vac
1062 Vac
240 Vac
1110 Vac
480 Vac
1470 Vac
600 Vac
1650 Vac
Dielectric tests for ANSI/IEEE C37.20.1 Low Voltage Switchgear & C37.23 Bus
Rated Maximum Voltage
AC
Power Frequency Field
Test Voltage for 60
seconds duration
Reference DC Field Test
Voltage for 60 seconds
duration
254, 508, 635 Vac
1650 Vac
2325 Vdc
Dielectric tests ANSI/IEEE C37.20.2 & C37.20.3 Metal-Clad, Station-Type Cubical
and Metal Enclosed MV Switchgear, C37.23 Bus, Outdoor Circuit Breakers, and
ANSI C37.32 Air Switches
Rated Maximum Voltage
AC
Power Frequency Field
Test Voltage for 60 sec.
duration
Reference DC Field Test
Voltage for 60 seconds
duration
4.76 kVac
14.25 kVac
20.25 kVdc
8.25 kVac
19.5 kVac
27.75 kVdc
15 kVac
27 kVac
37.5 kVdc
15.5 kVac
37.5 kVac
52.5 kVdc
25.8/27 kVac
45 kVac
-
38.0 kVac
60 kVac
-
72.5 kVac
120 kVac
The column headed “DC Withstand” is given as a reference only for those using dc tests to verify
the integrity of connected cable installations without disconnecting the cables from the switchgear.
It represents values believed to be appropriate and approximately equivalent to the corresponding
power frequency withstand test values specified for voltage rating of switchgear. The presence of
this column in no way implies any requirement for a dc withstand test on ac equipment or that a dc
withstand test represents an acceptable alternative to the low-frequency withstand tests specified
in this specification, either for design tests, production tests, conformance tests, or field tests. When
making dc tests, the voltage should be raised to the test value in discrete steps and held for a period
of one minute.
© 2000-2001 Schneider Electric All Rights Reserved
61
Procedures for Startup and Commissioning of Electrical Equipment
Tables
Table 6:
Bulletin No. 018IB0001R5/01
May 2001
Instrument Transformer Dielectric Tests
Nominal System
(kV)
BIL(kV)
Applied Potential Tests Field Test
Voltage (kV)
ac
dc1
0.6
10
3
4
1.1
30
7.5
10
2.4
45
11.25
15
4.8
60
14.25
19
8.32
75
19.5
26
13.8
95
25.5
34
13.8
110
25.5
34
25
125
30
40
25
150
37.5
50
34.5
150
37.5
50
34.5
200
52.5
70
46
250
71.25
N/A
69
350
105
N/A
115
450
138.75
N/A
115
550
172.50
N/A
138
550
172.50
N/A
138
650
206.25
N/A
161
650
206.25
N/A
161
750
243.75
N/A
230
900
296.25
N/A
230
1050
345
N/A
345
1300
431.25
N/A
500
1675
562.5
N/A
500
1800
600
N/A
765
2050
690
N/A
Derived from Paragraph 8.8.2 and Tables 2 and 7 of ANSI/IEEE C5XVIII-1993 (Standard
Requirements for Instrument Transformers).
1 DC potential tests are not recommended for transformers rated higher than 200 kV BIL. DC tests
may prove beneficial as a reference for future testing. In such cases the test direct voltage should
not exceed the original factory test RMS alternating voltages.
62
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
Procedures for Startup and Commissioning of Electrical Equipment
Tables
Table 7:
Molded Case Circuit Breaker Watts Loss/ Resistance
Circuit Breaker
Type
Frame Size
Circuit Breaker
Pole Resistance
Type
(Amperes)
Rating/Ampacity
Ohms x 10-3
15
31.11
20
18.75
25
12.00
30
8.44
35
6.37
40
4.88
45
4.20
50
3.40
60
2.36
70
1.90
80
1.45
90
1.16
100
0.94
20
21.25
25
14.40
30
10.00
35
7.35
40
5.94
45
4.69
50
4.00
60
2.78
70
2.45
80
1.88
90
1.60
100
1.30
70
2.78
80
2.13
90
1.94
100
1.57
110
1.31
125
1.02
150
0.73
175
0.55
200
0.44
225
0.36
250
0.29
110
1.20
125
1.06
150
0.87
175
0.64
200
0.58
225
0.48
250
0.42
FA, FH, FC
FI, IF 600V
KA, KH
KC, KI, IK
© 2000-2001 Schneider Electric All Rights Reserved
100
100
225/250
250
63
Procedures for Startup and Commissioning of Electrical Equipment
Tables
Bulletin No. 018IB0001R5/01
May 2001
Molded Case Circuit Breaker Watts Loss & Resistance (cont’d)
Circuit Breaker
Type
Frame Size
Circuit Breaker
Pole Resistance
Type
(Amperes)
Rating/Ampacity
Ohms x 10-3
125
1.2160
150
0.9778
175
0.7967
200
0.6250
225
0.4998
250
0.4096
300
0.2911
350
0.2163
400
0.1688
250
0.6240
300
0.4667
350
0.3837
400
0.3063
300
0.4778
350
0.4163
400
0.2500
450
0.2519
500
0.2320
600
0.1694
125
1.6000
175
0.9143
200
0.7250
225
0.5926
250
0.4880
300
0.3444
350
0.2612
400
0.2000
500
0.1460
600
0.1139
700
0.0939
800
0.0781
LA, LH
IL 480V
LX, LXI, LE
MA, MH
400
400
600
800/1000
250
900
0.0679
1000
0.0550
100
0.8500
125
0.5440
150
0.4000
175
0.3265
200
0.3000
225
0.2667
250
0.2480
300
0.2144
350
0.1878
400
0.1531
450
0.1333
500
0.1220
MX, ME
400
64
© 2000-2001 Schneider Electric All Rights Reserved
Bulletin No. 0180IB0001R5/01
May 2001
Procedures for Startup and Commissioning of Electrical Equipment
Tables
Molded Case Circuit Breaker Watts Loss & Resistance (cont’d)
Circuit Breaker
Type
Frame Size
Circuit Breaker
Pole Resistance
Type
(Amperes)
Rating/Ampacity
Ohms x 10-3
400
600
0.1069
700
0.1000
800
0.0813
600
0.1069
700
0.1000
MX, ME
800
NH
NA, NC, NX, NE
1200
800
0.0813
1000
0.0630
1200
0.0535
600
0.1125
700
0.1061
800
0.0852
12000
900
0.0821
1000
0.0685
1200
0.0563
600
0.1069
700
0.1000
800
0.0813
900
0.0716
1000
0.0630
1200
0.0535
1400
0.0495
1600
0.0410
1800
0.0355
2000
0.0315
2500
0.0269
1200—2000
PA, PH, PC, PX, PE
2500
© 2000-2001 Schneider Electric All Rights Reserved
65
Procedures for Startup and Commissioning of Electrical Equipment
Table 8:
Type DS, DSII, DSL, and DSLII Circuit Breaker
Contact Resistance
Maximum Contact Resistance
Schneider Electric Egypt
68 Tayaran Street
Nasr City, Cairo
Tel:: 02-40 10 119
Fax: 02-40 14 056
www.schneider-electric.com
Bkr. Frame Size
Micro-ohms
DS206
200
DSL206
200
DS206S
200
DS416
65
DSL416
70
DS416S
65
DS420
65
DS632
40
DS840
40