59
R E LI AG E A R® LV SG
LO W VO LTAG E S W I TC H G E A R
Energizing the switchgear
Before energizing
Before switchgear is energized, a thorough
final check should be made using the following
checklist.
Refer to section 6 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.
Advanced application of Emax 2 protections
tested
Energizing procedures
Caution:
Energizing 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 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.
DANGER
WARNING
CAUTION
NOTICE
