Startup checklists

Liquid-filled transformers

Asset records, insulation measurements, oil systems, cooling, and protection.

Conservator / N2 gas / OLTC / Cooling
Configure installed components

Dry-type transformers

Enclosure & structure, Windings, Core & clamping, Power connections, Cooling & ventilation, Grounding & bonding.

Autotransformers

Enclosure & structure, Windings, Insulating-fluid system, Tap changer, Neutral connections, Grounding & bonding.

Grounding transformers

Enclosure & structure, Windings, Neutral connections, Power connections, Protection & interlocks, Grounding & bonding.

Load tap changers

Tap changer, Contacts & mechanism, Insulating-fluid system, Drive controls, Protection & interlocks, Enclosure & structure.

Transformer bushings

Bushings, Insulation system, Power connections, Insulating-fluid system, Sensors & monitoring, Grounding & bonding.

Switchgear & circuit breakers

Assemblies, operating mechanisms, protective functions, and service history.

Low-voltage switchboards

Enclosure & structure, Busbars, Power connections, Protection & interlocks, Metering, Grounding & bonding.

Panelboards

Enclosure & structure, Branch circuits, Power connections, Protection & interlocks, Neutral connections, Grounding & bonding.

Motor control centers

Enclosure & structure, Busbars, Starters & overloads, Drive controls, Protection & interlocks, Grounding & bonding.

Busway & bus ducts

Enclosure & structure, Busbars, Power connections, Supports & trays, Fire barriers, Grounding & bonding.

Ring main units

Enclosure & structure, Gas system, Contacts & mechanism, Terminations & joints, Protection & interlocks, Grounding & bonding.

Vacuum circuit breakers

Interrupter assembly, Contacts & mechanism, Trip & close circuits, Insulation system, Racking & shutters, Grounding & bonding.

Gas-insulated circuit breakers

Interrupter assembly, Gas system, Contacts & mechanism, Trip & close circuits, Bushings, Grounding & bonding.

Air circuit breakers

Contacts & mechanism, Interrupter assembly, Trip & close circuits, Racking & shutters, Protection & interlocks, Insulation system.

Molded-case circuit breakers

Enclosure & structure, Power connections, Contacts & mechanism, Trip & close circuits, Protection & interlocks, Insulation system.

Disconnect switches

Contacts & mechanism, Insulation system, Power connections, Drive controls, Protection & interlocks, Grounding & bonding.

Fused switches

Fuses & holders, Contacts & mechanism, Insulation system, Power connections, Protection & interlocks, Grounding & bonding.

Electric motors

Winding records, bearings, drives, and operating conditions.

Synchronous motors

Windings, Rotor, Excitation system, Bearings & lubrication, Cooling & ventilation, Grounding & bonding.

DC motors

Windings, Brushes & commutator, Rotor, Bearings & lubrication, Cooling & ventilation, Grounding & bonding.

Generators & alternators

Windings, Rotor, Excitation system, Bearings & lubrication, Protection & interlocks, Grounding & bonding.

Generator excitation systems

Excitation system, Charger & rectifier, Drive controls, Protection & interlocks, Cooling & ventilation, Grounding & bonding.

Motor starters & contactors

Starters & overloads, Contacts & mechanism, Power connections, Protection & interlocks, Enclosure & structure, Grounding & bonding.

Power cables

Circuit identity, terminations, installation records, and insulation test history.

Low-voltage cables

Cable body, Terminations & joints, Supports & trays, Fire barriers, Power connections, Grounding & bonding.

Medium-voltage cables

Cable body, Terminations & joints, Cable shields, Supports & trays, Fire barriers, Grounding & bonding.

High-voltage cables

Cable body, Terminations & joints, Cable shields, Bushings, Supports & trays, Grounding & bonding.

Cable terminations & joints

Terminations & joints, Cable body, Cable shields, Power connections, Supports & trays, Grounding & bonding.

Cable trays & support systems

Supports & trays, Enclosure & structure, Cable body, Fire barriers, Power connections, Grounding & bonding.

Batteries & DC systems

Cell records, chargers, connections, and backup supply documentation.

Vented lead-acid batteries

Battery cells, Electrolyte, Battery connections, Battery performance, Charger & rectifier, Enclosure & structure.

VRLA batteries

Battery cells, Battery connections, Battery performance, Charger & rectifier, Sensors & monitoring, Enclosure & structure.

Nickel-cadmium batteries

Battery cells, Electrolyte, Battery connections, Battery performance, Charger & rectifier, Enclosure & structure.

Battery chargers

Charger & rectifier, DC circuits, Power connections, Protection & interlocks, Cooling & ventilation, Grounding & bonding.

DC distribution panels

DC circuits, Branch circuits, Fuses & holders, Power connections, Enclosure & structure, Grounding & bonding.

Uninterruptible power supplies

Charger & rectifier, Inverter, Bypass system, Battery cells, Power connections, Protection & interlocks, Cooling & ventilation, Grounding & bonding.

Variable-frequency drives

Drive controls, Inverter, Power connections, Protection & interlocks, Cooling & ventilation, Grounding & bonding.

Soft starters

Starters & overloads, Drive controls, Bypass system, Power connections, Cooling & ventilation, Grounding & bonding.

Automatic transfer switches

Transfer mechanism, Contacts & mechanism, Logic & settings, Sensors & monitoring, Power connections, Grounding & bonding.

Static transfer switches

Transfer mechanism, Inverter, Logic & settings, Power connections, Cooling & ventilation, Grounding & bonding.

Battery energy storage systems

Battery cells, Battery management, Inverter, DC circuits, Power connections, Protection & interlocks, Fire & environmental interfaces, Cooling & ventilation, Grounding & bonding.

Protective relays

Settings, logic, trip paths, and controlled test documentation.

Current transformers

Current-transformer circuits, Insulation system, Power connections, Supports & trays, Sensors & monitoring, Grounding & bonding.

Voltage transformers

Voltage-transformer circuits, Insulation system, Fuses & holders, Power connections, Supports & trays, Grounding & bonding.

Revenue & power meters

Metering, Current-transformer circuits, Voltage-transformer circuits, Power connections, Time synchronization, Communications.

Power-quality monitoring systems

Metering, Current-transformer circuits, Voltage-transformer circuits, Time synchronization, Communications, Sensors & monitoring.

Trip circuits & lockout relays

Trip & close circuits, Relay hardware, Logic & settings, DC circuits, Power connections, Enclosure & structure.

Grounding & bonding systems

Ground grid, Grounding & bonding, Power connections, Supports & trays, Enclosure & structure, Neutral connections.

Lightning protection systems

Lightning interception, Ground grid, Grounding & bonding, Supports & trays, Power connections, Surge protective device.

Surge arresters

Surge arrester, Insulation system, Power connections, Supports & trays, Sensors & monitoring, Grounding & bonding.

Surge protective devices

Surge protective device, Power connections, Fuses & holders, Enclosure & structure, Sensors & monitoring, Grounding & bonding.

Capacitor banks

Capacitor assemblies, Reactors, Fuses & holders, Contacts & mechanism, Protection & interlocks, Grounding & bonding.

Harmonic filters

Filter control, Reactors, Capacitor assemblies, Metering, Cooling & ventilation, Grounding & bonding.

Control panels

Enclosure & structure, Control logic & I/O, DC circuits, Power connections, Communications, Grounding & bonding.

Substation automation systems

Control logic & I/O, Communications, Time synchronization, DC circuits, Logic & settings, Sensors & monitoring.

Protection communication systems

Communications, Time synchronization, DC circuits, Logic & settings, Power connections, Enclosure & structure.

Emergency lighting systems

Luminaires & signs, Battery cells, Charger & rectifier, Backup duration, Branch circuits, Enclosure & structure.

Electrical heat tracing

Heating circuit, Thermostats, Power connections, Protection & interlocks, Insulation system, Grounding & bonding.

Electrical enclosures

Enclosure & structure, Supports & trays, Cooling & ventilation, Thermostats, Power connections, Grounding & bonding.

Floor power distribution units (PDUs)

Enclosure & structure, Windings, Branch circuits, Metering, Protection & interlocks, Grounding & bonding.

Rack power distribution units

Outlets & rack distribution, Branch circuits, Metering, Communications, Power connections, Grounding & bonding.

Remote power panels (RPPs)

Enclosure & structure, Branch circuits, Metering, Power connections, Protection & interlocks, Grounding & bonding.

Busway tap-off units

Enclosure & structure, Contacts & mechanism, Power connections, Protection & interlocks, Busbars, Grounding & bonding.

Standby generator sets

Generator-set auxiliaries, Windings, Excitation system, Charger & rectifier, Power connections, Protection & interlocks, Cooling & ventilation, Grounding & bonding.

Generator paralleling switchgear

Synchronizing & load sharing, Busbars, Contacts & mechanism, Protection & interlocks, Logic & settings, Metering.

Load banks

Load-bank elements, Power connections, Cooling & ventilation, Protection & interlocks, Enclosure & structure, Grounding & bonding.

Voltage sag conditioners

Voltage-sag correction, Bypass system, Metering, Protection & interlocks, Cooling & ventilation, Grounding & bonding.

Isolation transformers

Windings, Core & clamping, Insulation system, Power connections, Cooling & ventilation, Grounding & bonding.

Medium-voltage drives

Drive controls, Inverter, Insulation system, Protection & interlocks, Cooling & ventilation, Grounding & bonding.

Gas-insulated switchgear (GIS)

Gas system, Busbars, Interrupter assembly, Trip & close circuits, Protection & interlocks, Grounding & bonding.

Neutral grounding resistors

Neutral grounding resistor, Neutral connections, Power connections, Sensors & monitoring, Protection & interlocks, Grounding & bonding.

Hazardous-area motors

Hazardous-location construction, Windings, Bearings & lubrication, Cooling & ventilation, Power connections, Grounding & bonding.

Hazardous-area lighting

Hazardous-location construction, Luminaires & signs, Branch circuits, Power connections, Supports & trays, Grounding & bonding.

Hazardous-area junction boxes

Hazardous-location construction, Enclosure & structure, Power connections, Branch circuits, Supports & trays, Grounding & bonding.

Purged & pressurized panels

Purge & pressurization, Hazardous-location construction, Enclosure & structure, Control logic & I/O, Power connections, Grounding & bonding.

Intrinsically safe barriers & isolators

Intrinsic-safety interfaces, DC circuits, Power connections, Communications, Enclosure & structure, Grounding & bonding.

RF plasma power supplies & matching networks

RF generator & matching network, Drive controls, Power connections, Cooling & ventilation, Protection & interlocks, Grounding & bonding.