Section 9. Energizing The Switchgear; Before Energizing; Energizing Procedures - GE AKD-20 AR Installation And Maintenance Manual

AKD-20 AR / Entellisys AR Low-voltage Switchgear

Section 9. Energizing the Switchgear

Section 9. Energizing the Switchgear

Before Energizing

Before switchgear is energized, a thorough final check should
be made using the following checklist: Refer to section Final
Steps to be taken Before Energizing Equipment for additional
information.
• Breakers and other operating mechanisms
exercised
• Electrical insulation resistance tested phase-to-
phase and phase-to-ground
• Relays, meters and instruments properly connected
• Electrically operated breakers and operating
mechanisms exercised
• Ground fault protection system tested
•
Adjustable trips properly set
• Field wiring secured and free of live bus
• Grounding connections made
• All debris, scrap wire, etc. removed
• All covers installed, doors closed and latched
WARNING: The following must be adhered to ensure
the integrity of the arc resistant enclosure:
• EntelliGuard racking handle(s) must be returned to all
breaker compartment(s).
• Key interlock(s) or the metallic key interlock plug(s) must
be installed to all breaker compartments
• Position switch(es) or the metallic position switch
covers(s) mustbe installed to all breaker compartments.
• Breaker compartment door(s) must be closed and
latched.
• Breaker compartment(s) without a circuit breaker(s)
must have a future door cover(s) and future cassette
barrier(s) installed.
• Exhaust plenum system must be properly installed.
• Rear compartment door(s) must be closed and bolted.
• IR window cover(s) must be closed and secured.
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Courtesy of NationalSwitchgear.com

Energizing Procedures

DANGER: Electrical arc flash hazard. Personal
protection equipment required. Turn off power to the
equipment before working inside.
WARNING: Energizing the switchgear for the first time
is potentially dangerous. Therefore, qualified electrical
personnel should be present when the equipment is
energized. If problems caused by damage or poor
installation practices have not been detected in the
checkout procedure described previously, serious damage
can result when the power is turned on.
There should be no load on the switchgear when it is
energized.
Turn off all of the downstream loads, including those such as
motor control centers and other devices which are remote
from the switchgear.
The equipment should be energized in sequence by starting
at the source end of the system and working toward the load
end. In other words, energize the main devices, then the
feeder devices, and then the branch-circuit devices.
Turn the devices on with a firm positive motion.
Using the Entellisys HMI, turn on the devices (Entellisys AR
Only).
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