Attachment 5 - Appendix B - F.pdf

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Preventative Maintenance of Electrical Equipment
Solicitation number
W911KF-21-Q-0022
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This document contains electrical preventive maintenance checklist forms for low and medium voltage equipment. The checklists include inspection and testing procedures for various types of electrical equipment such as transformers, switchgear, circuit breakers, protective relays, automatic transfer switches, meters, and uninterruptible power supply systems. Inspections cover mechanical, electrical, and structural aspects of the equipment, while electrical tests include resistance measurements, insulation testing, and operational verification. Recommended maintenance intervals range from annual to three-year periods depending on the equipment type.

The related federal contract opportunity is a solicitation for preventative maintenance of electrical equipment at Anniston Army Depot. Services required include inspection and preventive maintenance of electrical equipment per NFPA 70B and Army electrical safety standards, utilizing the manufacturer's specifications and contract documents. The solicitation was issued by the Department of the Army Materiel Command Contracting Command Detroit Arsenal.

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Appendix B Electrical Preventive Maintenance (EPM)

Low and Medium Voltage

Equipment Checklist Forms

Section 1 - Low Voltage Equipment (0-1000v)

Dry-type Transformers Form S1.2

Switchgear (100kaic or larger) Form S1.3

Switchboards/Panels (smaller than 100kaic) Form S1.4

Circuit Breaker - Draw-out Type Form S1.5

Circuit Breaker - Molded Case Form S1.6

Fuses Form S1.7

Busduct/Busway Form S1.8

Panelboards Form S1.9

Protective Relays Form S1.10

Automatic Transfer Equipment Form S1.11

Circuit Breaker Over-current Trip Device Form S1.12

Disconnect/Safety Switch Form S1.13

Meters Form S1.19

Uninterruptable Power Supply Systems Form S1.20

Page left blank for Duplex Printing

EPM Checklist Form S1.2

Transformers, Dry Type, Air-Cooled, Low-Voltage, Small Recommended Maintenance Interval: 2 years

NOTE: This category consists of power transformers with windings rated 600 volts or less and sizes equal to or less than 167 kVA single-phase or 500 kVA three-phase.

Building # Room# Transformer ID

Transformer KVA Voltage

Inspector's Name Date

Refer to Activity Hazard Analysis: AHA#003, AHA#004, AHA#005

1. Thermal Imaging.

Open doors or remove covers as needed for Imaging. Follow all Safety

Procedures for live electrical work. Wear all appropriate PPE.

Using a Thermal Imaging Camera or Infrared Scanner, inspect the interior of the transformer for hot spots.

All Circuits and System Components shall be de-energized for the following procedures. Follow your organization's required LOTO procedure.

2. Visual and Mechanical Inspection.

Inspect physical and mechanical condition for signs of damage, arcing, overheating, etc.

Inspect anchorage and alignment.

Inspect for proper grounding of the frame and Neutral bar, if applicable.

Inspect bolted electrical connections for tightness.

Clean the unit by vacuum (recommended) or low pressure air.

Verify that all covers, doors and associated hardware are in place.

3. Electrical Tests.

Perform resistance measurements across bolted connections with a low-resistance ohmmeter.

List recommended actions or repairs here:

EPM Checklist Form S1.3

Switchgears (100kaic or larger)

NOTE: This category consists of Switchgear and Switchboard Assemblies with an AIC rating of 100k or higher.

Building # Room# Panel ID

Panel Ampacity Voltage

Refer to Activity Hazard Analysis: AHA#003, AHA#004, AHA#006

Procedures for live electrical work. Wear all appropriate PPE.

the Switchgear for hot spots.

Inspect physical, electrical, and mechanical condition including evidence of moisture or corona.

Inspect anchorage, alignment, grounding, and required area clearances.

Clean the unit using a vacuum (recommended) or low pressure air. Use a rag to clean excessively dirty areas. DO NOT use cleaning solvents on any conductive surface.

Verify that fuse and/or circuit breaker sizes and types correspond to drawings and coordination study.

Verify tightness of accessible bolted electrical connections.

Confirm correct operation and sequencing of electrical and mechanical interlock systems such as latching covers and doors.

Use appropriate lubrication on moving current-carrying parts and on moving and sliding surfaces.

Verify correct barrier and shutter installation and operation.

Exercise all active components.

Form S1.3 Continued

Inspect mechanical indicating devices for correct operation.

Verify that filters and vents are clear, if applicable.

Verify that cooling fans are functional, if applicable.

Inspect any Gaskets or Seals for signs of wear.

Electrical equipment rooms or vaults should be kept cleaned of dirt and/or dust accumulations. Clean the area around the Switchgear.

resistance ohmmeter.

Perform insulation–resistance tests for one minute on each bus section, phase-to-phase and phase-to-ground. Apply voltage in accordance with manufacturer’s published data.

Perform an over-potential test on each bus section, each phase-to-ground with phases not under test grounded, in accordance with manufacturer’s published data.

Verify operation of switchgear/switchboard heaters and their controller, if applicable.

4. Individual Components.

Switchgears are comprised of several components that have their own specific PM requirements. See the list below for references. Multiple Forms may be required.

Refer to Form 1.5 Circuit Breaker - Draw-out Type

Refer to Form 1.6 Circuit Breaker - Molded Case

Refer to Form 1.8 Busduct/Busway

Refer to Form 1.10 Protective Relays

Refer to Form 1.19 Meters

EPM Checklist Form S1.4

Switchboards/Panels (Smaller than 100kaic)

NOTE: This category consists of Switchboard and Panel Assemblies with an AIC rating of less than 100k.

Panel Ampacity_ Voltage _

Refer to Activity Hazard Analysis: AHA#003, AHA#004, AHA#007

Procedures for live electrical work. Wear all appropriate PPE.

the Panel for hot spots.

Inspect physical, electrical, and mechanical condition including evidence of moisture or corona.

Clean the unit using a vacuum (recommended) or low pressure air.

Verify that fuse and/or circuit breaker sizes and types correspond to drawings and coordination study.

Form S1.4 Continued

Electrical equipment rooms or vaults should be kept cleaned of dirt and/or dust accumulations. Clean the area around the Panel.

Switchboards are comprised of several components that have their own specific

Refer to Form 1.12 Circuit Breaker Overcurrent Trip Device

EPM Checklist Form S1.5

Circuit Breaker - Draw-Out Type Recommended Maintenance Interval: 3 years

Building # Room# Breaker ID

Breaker Type Voltage Amperage_

Refer to Activity Hazard Analysis: AHA#003, A HA#004, AHA#008

Procedures for live electrical work. Wear all appropriate PPE.

the Breaker for hot spots.

Inspect the physical and mechanical condition.

Clean the interior of the breaker using Low Pressure Air.

Operate the breaker and observe all moving components. Check for proper alignment of all contacts and guides.

Apply the appropriate lubricant to all moving parts.

Inspect bolted electrical connections for tightness.

Perform resistance measurements through bolted connections with a low-resistance ohmmeter.

Perform insulation-resistance tests for one minute on each pole, phase-to-phase and phase-to ground with the circuit breaker closed, and across each open pole.

Verify operation of charging mechanism, if equipped.

EPM Checklist Form S1.6

Circuit Breaker - Molded Case

Building # Room# Breaker ID

Refer to Activity Hazard Analysis: AHA#003, AHA#007

1. Visual and Mechanical Inspection.

Operate the breaker and observe all moving components. Check for proper alignment of all contacts and guides.

2. Electrical Tests.

EPM Checklist Form S1.7

Fuses - 600v or less

Building # Room# Fuse ID

Fuse Type Voltage Amperage_

Refer to Activity Hazard Analysis: AHA#003

Verify that fuse information is legible.

Apply the appropriate dielectric compound to the mating areas.

Perform resistance measurements across fuse element.

EPM Checklist Form S1.8

Busduct / Busway

Building # Room# Bus ID

Bus Type _ Voltage Amperage_

Refer to Activity Hazard Analysis: AHA#003, AHA#004, AHA#009, AHA#020

Using a Thermal Imaging Camera or Infrared Scanner, inspect the full length of the exterior of the Bus for hot spots.

Inspect anchorage, alignment and grounding.

Inspect Data plates for accurate information.

resistance ohmmeter.

Perform insulation resistance tests on each busway for one minute, phase-to-phase and phase to ground.

EPM Checklist Form S1.9

Panelboards

Panel Ampacity_ Voltage _

Refer to Activity Hazard Analysis: AHA#003, AHA#004, AHA#007

Procedures for live electrical work. Wear all appropriate PPE.

the Panel for hot spots.

Inspect physical, electrical, and mechanical condition including evidence of moisture or corona.

Verify that circuit breaker sizes and types correspond to drawings and coordination study.

Verify correct barrier installation and operation.

Electrical equipment rooms or vaults should be kept cleaned of dirt and/or dust accumulations. Clean the area around the Panel.

Form S1.9 Continued

Panelboards are comprised of several components that have their own specific

Refer to Form 1.12 Circuit Breaker Overcurrent Trip Device

EPM Checklist Form S1.10

Protective Relays

Building # Room# Relay ID

Relay Type_ Voltage Amperage_

Refer to Activity Hazard Analysis: AHA#003, AHA#004, A HA#008

Inspect relays for physical damage and deterioration.

Inspect gaskets and covers for damage and/or excessive wear, and repair or replace as necessary.

Examine and clean the relay and enclosure of foreign materials, such as dust, dirt, and moisture contamination.

Examine the condition of the spiral spring, disc clearances, contacts, and case shorting contacts (if present).

Check mechanism for freedom of movement, proper travel and alignment, and tightness of mounting hardware and plugs.

Using an appropriate testing instrument, suitable for the relays being tested, conduct electrical testing of the relays in accordance with manufacturer’s recommendations and IEEE testing standards. For over-current relays, test the following functions of the relay at the established settings specified by the system engineer or manufacturer:

Pickup contacts should close when a current equal to the relay tap setting is applied to the induction coil. Adjust the spring as needed to allow for proper operation.

Timing tests should be performed corresponding to two (2) or more points on the relay’s time-current curves. One of the tests should be done at the specified time dial setting.

Instantaneous pickup test should be performed for the specified instantaneous setting, if applicable.

Seal-in units should be tested to ensure that the contacts hold closed with the minimum specified current applied.

F orm S1.10 Continued

Relay target should indicate when the relay has operated.

If possible, the relays should be tested to ensure that operation of the relay will in fact cause a tripping action of the respective circuit breaker. Relays that do not test satisfactorily or are found to be defective should be replaced immediately to maintain the integrity of the protection systems.

EPM Checklist Form S1.11

Automatic Transfer Equipment Recommended Maintenance Interval: 1 year

Building # Room# ATS ID

ATS Ampacity Voltage

Refer to Activity Hazard Analysis: AHA#003, AHA#004, AHA#010

Procedures for live electrical work. Wear all appropriate PPE.

the ATS for hot spots.

moisture or corona.

rag to clean excessively dirty areas. DO NOT use cleaning solvents on any conductive surface.

Confirm correct operation and sequencing of electrical and mechanical interlock systems such as latching covers and doors.

Manually transfer / exercise all active components.

Form S1.11 Continued

Electrical equipment rooms should be kept cleaned of dirt and/or dust accumulations. Clean the area around the ATS.

4. Energized Function Tests.

All normal and emergency power sources must be in active or stand-by condition for the following tests.

Remove normal input power. Verify operation of the Generator start function and automatic transfer to emergency power input.

Restore normal input power. Verify operation of the automatic transfer to normal power input.

Verify function of the timed generator cool-down and shut-down function.

Verify that all indicator lights function correctly to the current state of the ATS during testing.

EPM Checklist Form S1.12

Circuit Breaker Over-current Trip Device Recommended Maintenance Interval: with Circuit Breaker PM

Building # Room # Breaker ID

Trip Unit Type Voltage Amperage

Refer to Activity Hazard Analysis: AHA#003, AHA#008

Verify that Trip Unit information is legible.

Verify that the Trip Rating is appropriate for the actual connected load.

Verify that the Trip Unit is firmly seated into the breaker socket.

No field electrical testing can be performed on installed Over-current Trip Devices.

EPM Checklist Form S1.13

Disconnect/Safety Switch

Building # Room # Disconnect ID

Disconnect Type Voltage Amperage

Refer to Activity Hazard Analysis: AHA#001, AHA#003

Inspect the physical and mechanical condition for signs of overheating and excessive wear.

Inspect anchorage, alignment, grounding, and required clearances.

rag to clean excessively dirty areas. DO NOT use cleaning solvents on any conductive surface.

Apply the appropriate dielectric compound to moving parts and mating surfaces.

Operate the disconnect. Verify correct operation of the moving parts.

Inspect bolted electrical connections and wire terminations for tightness.

Verify that all protective guards and arc shields are installed

Verify that all safety mechanisms operate correctly.

Measure contact resistance across each switchblade and fuse-holder.

Form S1.13 Continued

See the list below for references. Multiple Forms may be required.

Refer to Form 1.7 Fuses

EPM Checklist Form S1.19

Metering Devices

Building # Room # Meter ID

Meter Type System Voltage

Refer to Activity Hazard Analysis: AHA#001, A HA#003, AHA#004 damage or overheating.

Inspect anchorage, alignment and grounding.

Clean the unit using a vacuum (recommended) or low pressure air.

Verify tightness of accessible bolted electrical connections.

Inspect cover gasket, cover glass, condition of spiral spring, disk clearance, contacts, and case-shorting contacts, as applicable.

Verify that CTs, wires and sensors are in good condition.

Calibrate meters in accordance with manufacturer’s published data.

resistance ohmmeter, System Power must be restored for the following inspection:

3. Programming Verify that CT ratios are accurate.

Verify that Voltage Configuration is accurate.

EPM Checklist Form S1.20

Uninterruptable Power Supply Systems

Building # Room# UPS ID

UPS Rating Make/Model

Refer to Activity Hazard Analysis: AHA#003, AHA#004, AHA#011

Complete Preventive Maintenance for a UPS System is an extensive process.

The tasks listed below are generic in nature and are intended to be used in conjunction with the Manufacturer's O&M. Refer to Manufacturer's O&M Documents for additional Testing Procedures.

Procedures for live electrical work. Wear all appropriate PPE.

the UPS for hot spots.

WARNING: Disconnect all input power, output power and battery connections prior to working on any UPS Unit. Allow 10 minutes for the Capacitors within the charging and rectifier circuits to discharge.

Inspect physical, electrical, and mechanical condition for signs of damage or overheating.

Inspect the Battery compartment for signs of corrosion or leaking batteries.

Inspect all battery cables for signs of corrosion or deterioration.

Form S1.20 Continued rag to clean excessively dirty areas. DO NOT use cleaning solvents on any conductive surface.

Record the Date of Manufacture from each of the installed batteries.

Electrical equipment rooms should be kept cleaned of dirt and/or dust accumulations. Clean the area around the UPS.

Verify that the room has adequate ventilation and cooling for safe UPS operation.

Check the voltage of each installed Battery. Compare to the listed data.

4. Energized Function Tests.

All normal and emergency power sources must be in active or stand-by condition for the following tests.

Remove normal input power. Verify that all connected loads are still energized.

Restore normal input power. Verify countdown time to return to normal power.

Verify charging status of the batteries upon return to normal power.

Verify that all indicator lights function correctly to the current state of the UPS during testing.

Section 2 - Medium Voltage Equipment (over 1000v)

Wires and Cables Form S2.1

Liquid Filled Transformers - Pole Mount Form S2.2

Liquid Filled Transformers - Pad Mount Form S2.3

Dry-Type Transformers Form S2.4

Circuit Breakers (Air/Oil/Vacuum) Form S2.6

Protective Relays Form S2.9

Surge Arrestors Form S2.13

Cutouts Form S2.15

Reclosers Form S2.16

Voltage Regulators Form S2.17

Meters Form S2.19

EPM Checklist Form S2.1

Wires and Cables (over 1000v)

Building/Pole # _ Equipment #

Wire/Cable Type _

Refer to Activity Hazard Analysis: AHA#001, AHA#003, AHA#019, AHA# 020

All Circuits and System Components shall be de-energized and bonding jumpers installed between all phases and phase to ground for the following procedures. Follow your organization's required LOTO procedure.

1. Visual and Mechanical Inspection

Inspect exposed sections of cables for physical damage and evidence of overheating and corona.

Inspect terminations and splices for physical damage, evidence of overheating, and corona.

Inspect bolted electrical connections for high resistance using one of the following methods:

1. Use of a low-resistance ohmmeter in accordance with ANSI NETA MTS 2007 Section 7.3.3.2.

2. Verify tightness of accessible bolted electrical connections by calibrated torque-wrench method in accordance with manufacturer's published data or ANSI NETA MTS 2007 Table 100.12.

3. Perform a thermo-graphic survey in accordance with ANSI NETA MTS 2007 Section 9.

Inspect compression-applied connectors for correct cable match and indentation.

Inspect shield grounding and cable support.

Verify that visible cable bends meet or exceed ICEA and/or manufacturer's minimum allowable bending radius.

Inspect fireproofing in common cable areas.

If cables are terminated through window-type current transformers, inspect to verify that neutral and ground conductors are correctly placed and that shields are correctly terminated for operation of protective devices.

2. Electrical Tests

Perform resistance measurements through bolted connections with a low-resistance ohmmeter, if applicable, in accordance with ANSI NETA MTS 2007 Section 7.3.3.1 Perform an insulation-resistance test individually on each conductor with all other conductors and shields grounded. Apply voltage in accordance with manufacturer's published data.

Perform a shield-continuity test on each power cable by ohmmeter method.

Continued on Next Page

Due to the various cable testing methods commercially available, the following section does not denote “optional” or “required” tests. It is only after careful analysis of all circuit parameters between the testing entity and the cable owner that a preferred testing method should be selected.

In accordance with ICEA, IEC, IEEE and other power cable consensus standards, testing can be performed by means of direct current, power frequency alternating current, or very low frequency alternating current. These sources may be used to perform insulation withstand tests, and diagnostic tests such as partial discharge analysis, and power factor or dissipation factor. The selection can only be made after an evaluation of the available test methods and a review of the installed cable system.

Over-potential Withstand

1. Direct Current (DC) Over-potential

2. Very Low Frequency (VLF) Over-potential

3. Power Frequency (50/60 Hz) Over-potential

Diagnostic Tests

1. Power Factor/Dissipation Factor (Tan Delta)

1. Power Frequency (50/60 Hz)

2. Very Low Frequency (VLF)

2. DC Insulation Resistance

3. Partial Discharge

1. On Line (50/60 Hz)

2. Off Line

1. Power Frequency (50/60 Hz)

2. Very Low Frequency (VLF)

3. Test Values

Compare bolted connection resistance values to values of similar connections. Investigate values which deviate from those of similar bolted connections by more than 50 percent of the lowest value.

Bolt-torque levels should be in accordance with manufacturer’s published data.

Compare bolted connection resistance values to values of similar connections. Investigate values which deviate from those of similar bolted connections by more than 50 percent of the lowest value.

Insulation-resistance values should be in accordance with manufacturer’s published data.

Values of insulation resistance less the manufacturer’s recommendations should be investigated.

Shielding shall exhibit continuity. Investigate resistance values in excess of ten ohms per 1000 feet of cable.

If no evidence of distress or insulation failure is observed by the end of the total time of voltage application during the over-potential test, the test specimen is considered to have passed the test.

EPM Checklist Form S2.2

Liquid Filled Transformers - Pole Mount

Building # Pole # _ Transformer ID

Refer to Activity Hazard Analysis: AHA#001, AHA#013, AHA#019, AHA#020

All Circuits and System Components shall be de-energized and bonding jumpers placed between all phases and phase to ground for the following procedures.

Follow your organization's required LOTO procedure.

overheating, weathering, corrosion, etc.

Inspect anchorage, alignment and grounding.

Verify the presence of PCB labeling, if applicable.

Inspect bolted electrical connections for tightness.

Verify correct liquid level in tanks and bushings.

Verify the presence of transformer surge arresters.

resistance ohmmeter.

Perform insulation-resistance tests, winding-to-winding and each winding-to-ground. Apply voltage in accordance with manufacturer’s published data.

Measure the resistance of each winding at the designated tap position.

If the core ground strap is accessible, remove and measure the core insulation resistance at 500 volts dc.

Form S2.2 Continued

Test the surge arresters in accordance to Form 2.13

Test the transformer neutral grounding impedance devices, if applicable.

3. Liquid Analysis.

Remove a sample of the insulating liquid and test for dielectric breakdown, acidity, color, power factor, and interfacial tension.

Remove a sample of the insulating liquid and send to an independent testing laboratory for a DGA test.

EPM Checklist Form S2.3

Liquid Filled Transformers - Pad Mount

Building # Transformer ID

Refer to Activity Hazard Analysis: AHA#001, AHA#013 placed between all phases and phase to ground for the following procedures.

overheating, weathering, corrosion, etc.

Verify the presence of PCB labeling, if applicable.

Inspect bolted electrical connections for tightness.

Clean the interior using a vacuum (recommended) or low pressure air.

Verify operation of trip circuits from temperature and level indicators, pressure relief device, and fault pressure relay, if applicable.

Verify that cooling fans and/or pumps operate correctly.

Verify correct liquid level in tanks and bushings.

Verify the presence of transformer surge arresters.

resistance ohmmeter.

Perform insulation-resistance tests, winding-to-winding and each winding-to-ground. Apply voltage in accordance with manufacturer’s published data.

Form S2.3 Continued

Measure the resistance of each winding at the designated tap position.

If the core ground strap is accessible, remove and measure the core insulation resistance at 500 volts dc.

Test the surge arresters in accordance to Form 2.13

Test the transformer neutral grounding impedance devices, if applicable.

3. Liquid Analysis.

Remove a sample of the insulating liquid and test for dielectric breakdown, acidity, color, power factor, and interfacial tension.

Remove a sample of the insulating liquid and send to an independent testing laboratory for a DGA test.

EPM Checklist Form S2.6

Circuit Breaker (Air/Oil/Vacuum)

Building # Room # Breaker ID

Refer to Activity Hazard Analysis: AHA#003, AHA#004, AHA#016

Procedures for live electrical work. Wear all appropriate PPE.

the Breaker for hot spots.

placed across all phases and phase to ground for the following procedures.

Verify that all maintenance devices are available for servicing and operating the breaker.

Clean the interior of the breaker using Low Pressure Air.

Inspect arc chutes.

Inspect moving and stationary contacts for condition, wear, and alignment.

If recommended by manufacturer, slow close/open breaker and check for binding, friction, contact alignment, contact sequence, and penetration.

Verify cell fit and element alignment.

Verify racking mechanism operation.

Form S2.6 Continued

Oil Type - Verify correct oil level in tanks and bushings.

Oil Type - Verify that breather vents are clear.

Vacuum Type - Inspect vacuum bottle assemblies

Vacuum Type - Inspect vacuum bellows operation.

resistance ohmmeter.

Perform insulation-resistance tests for one minute on each pole, phase-to-phase and phase-to ground with the circuit breaker closed, and across each open pole.

Perform a contact/pole-resistance test.

With the breaker in a test position, perform the following tests:

1. Trip and close breaker with the control switch.

2. Trip breaker by operating each of its protective relays.

3. Verify mechanism charge, trip-free, and anti-pump functions.

Verify blowout coil circuit continuity.

Oil Type - Remove a sample of the Oil and test for Dielectric Breakdown Voltage, Interfacial Tension, Visual Condition and Color.

Vacuum Type - Perform a vacuum bottle integrity (over-potential) test across each vacuum bottle with the breaker in the open position in strict accordance with manufacturer’s published data. Do not exceed maximum voltage stipulated for this test.

Verify operation of charging mechanism, if equipped.

EPM Checklist Form S2.9

Protective Relays

Building # Room # Relay ID

Relay Type_ Voltage Amperage_

Refer to Activity Hazard Analysis: AHA#003, AHA#014, AHA#016

Inspect relays and cases for physical damage.

Clean the interior of the unit using a vacuum. DO NOT use pressurized air.

Inspect gaskets and covers for damage and/or excessive wear, and repair or replace as necessary. Tighten all connections.

Clean cover glass. Inspect shorting hardware, connection paddles, and/or knife switches.

Examine and clean the relay and enclosure of foreign materials, such as dust, dirt, and moisture contamination.

Examine the condition of the spiral spring, disc clearances, contacts, and case shorting contacts (if present).

Inspect spiral spring convolutions. Inspect disk and contacts for freedom of movement and correct travel. Verify tightness of mounting hardware and connections. Burnish contacts. Inspect bearings and/or pivots.

Check mechanism for freedom of movement, proper travel and alignment, and tightness of mounting hardware and plugs.

Form S2.9 Continued

Using an appropriate testing instrument, suitable for the relays being tested, conduct electrical testing of the relays in accordance with manufacturer’s recommendations and IEEE testing standards. For over-current relays, test the following functions of the relay at the established settings specified by the system engineer or manufacturer:

Pickup contacts should close when a current equal to the relay tap setting is applied to the induction coil. Adjust the spring as needed to allow for proper operation.

Timing tests should be performed corresponding to two (2) or more points on the relay’s time-current curves. One of the tests should be done at the specified time dial setting.

Instantaneous pickup test should be performed for the specified instantaneous setting, if applicable.

Seal-in units should be tested to ensure that the contacts hold closed with the minimum specified current applied.

Relay target should indicate when the relay has operated.

If possible, the relays should be tested to ensure that operation of the relay will in fact cause a tripping action of the respective circuit breaker. Relays that do not test satisfactorily or are found to be defective should be replaced immediately to maintain the integrity of the protection systems.

Additional testing may be required by the equipment manufacturer. Please refer to manufacturer's documentation for specific maintenance and testing procedures.

EPM Checklist Form S2.13

Surge Arrestors - Medium/High Voltage

Building # Room/Pole # Equipment ID

Surge Arrestor Type Voltage Rating

Refer to Activity Hazard Analysis: AHA#003, AHA#018 placed across all phases and phase to ground for the following procedures.

Verify that the ground lead on each device is individually attached to a ground bus or ground electrode.

Verify that stroke counter, if present, is correctly mounted and electrically connected.

resistance ohmmeter.

Perform insulation-resistance test on each arrester, phase terminal to ground. Apply voltage in accordance with manufacturer’s published data.

EPM Checklist Form S2.15

Cutouts

Building # Pole # Equipment ID

Cutout Type/Size_ Fuse Rating

Refer to Activity Hazard Analysis: AHA#003, AHA#019, AHA#020 places across all phases and phase to ground for the following procedures.

Inspect anchorage, alignment and grounding, if applicable.

Verify correct blade alignment, blade penetration, travel stops, latching mechanism, and mechanical operation.

Verify that each fuse-holder has adequate mechanical support and contact integrity.

Perform resistance measurements across each cutout.

EPM Checklist Form S2.16

Reclosers

Building # Pole/Yard # _ _ Equipment ID

Recloser Type/Size Rating

Refer to Activity Hazard Analysis: AHA#003, AHA#019, AHA#020

Perform all mechanical operation and contact alignment tests on both the recloser and its operating mechanism in accordance with manufacturer’s published data.

Inspect for correct insulating liquid level, if applicable.

resistance ohmmeter.

Perform insulation-resistance tests for one minute on each pole, phase-to-phase and phase-to-ground with recloser closed and across each pole with the recloser open. Apply voltage in accordance with manufacturer’s published data.

Perform a contact/pole-resistance test.

Form S2.16 Continued

Remove a sample of the insulating liquid and send for testing in accordance with the equipment manufacturer's published data, if applicable.

Perform over-potential test on each phase with the recloser closed and the poles not under test grounded. Test voltage should be in accordance with manufacturer’s published data.

Verify operation of heaters, if applicable.

3. Individual Components.

Some of the installed equipment may have separate forms specific to their application. See forms below:

Refer to Form S2.4 Dry-Type Transformers, if applicable.

Refer to Form S2.9 Protective Relays, if applicable.

Refer to Form S2.19 Meters, if applicable.

EPM Checklist Form S2.17

Voltage Regulators

Building # Pole/Yard # _ _ Equipment ID

Regulator Type/Size Rating

Refer to Activity Hazard Analysis: AHA#001, AHA#003, AHA#018

Record position indicator as-found, maximum, and minimum values.

Verify auxiliary device operation.

Verify motor and drive train for correct operation and automatic motor cutoff at maximum lower and maximum raise.

Inspect for correct insulating liquid level, if applicable.

Record as-found and as-left operation counter readings.

Form S2.17 Continued resistance ohmmeter.

Perform insulation-resistance tests on each winding-to-ground in any off-neutral position. Apply voltage in accordance with manufacturer’s published data.

Measure winding resistance of source windings in the neutral position.

Measure the resistance of all taps on load windings.

Remove a sample of the insulating liquid and send for testing in accordance with the equipment manufacturer's published data, if applicable.

Perform special tests and adjustments as recommended by manufacturer.

Perform turns-ratio test on each voltage step position. Verify that the tap position indicator correctly identifies all tap positions.

Verify accurate operation of voltage range limiter.

Verify operation and accuracy of bandwidth, time delay, voltage, and line-drop compensation adjustments of tap-changer control device.

Verify operation of heaters.

EPM Checklist Form S2.19

Meters

Building # Room # Meter ID

Meter Type System Voltage

Refer to Activity Hazard Analysis: AHA#001, AHA#003, AHA#017 damage or overheating.

Inspect cover gasket, cover glass, condition of spiral spring, disk clearance, contacts, and case-shorting contacts, as applicable.

Verify that CTs, wires and sensors are in good condition.

Verify freedom of movement, end play, and alignment of rotating disk(s).

Calibrate meters in accordance with manufacturer’s published data.

resistance ohmmeter, Form S2.19 Continued

System Power must be restored for the following inspection:

3. Programming

Verify that CT ratios are accurate.

Verify that Voltage Configuration is accurate.

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EPM Checklist Form S1.5
1. Thermal Imaging.
2. Visual and Mechanical Inspection.
EPM Checklist Form S1.6
1. Visual and Mechanical Inspection.
EPM Checklist Form S1.7
1. Visual and Mechanical Inspection.
EPM Checklist Form S1.8
1. Thermal Imaging.
2. Visual and Mechanical Inspection.
EPM Checklist Form S1.10
1. Visual and Mechanical Inspection.
F orm S1.10 Continued
EPM Checklist Form S1.12
1. Visual and Mechanical Inspection.
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1. Visual and Mechanical Inspection.
3. Programming
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File details come from the government source that posted it. Updated .