Publication 2100-IN012B-EN-P - April 2005
Final Checklist Before Energizing 3-5
12. Manually exercise all switches, control auxiliary switches, circuit
breakers, their respective operators, unit interlocks, trip mechanisms
(test by pushing the “Push to Trip” button) and any other operating
mechanisms to verify proper operation.
13. Check timing relay settings as required.
14. Vents and Fans
A. Check all vents to ensure they are free from obstructions.
B. Check all fans, used for forced air cooling to ensure the shaft rotates
without obstructions.
C. Check that filters are in place and clean. Also, set up an in-house
program for scheduled cleaning or replacement.
15. Check all current transformers for proper polarity and ensure their
secondaries are NOT “open,” but are either connected to their
respective devices or “shorted.”
16. Recheck and ensure that all barriers and parts that may have been
removed during installation have been reinstalled. Refer to the
barrier checklist.
17. Before closing the enclosure and/or individual units, remove all tools,
metal chips, scrap wire and other debris from the MCC interior. If there
is an accumulation of dust or dirt, clean out the MCC using a brush,
vacuum cleaner or clean, lint-free rag. DO NOT use compressed air -
it will redistribute contaminates on other surfaces.
ATTENTION
Current transformer secondaries should not be “open.” To
avoid possible injury and electrical shock to personnel, do
not energize a current transformer with its secondary open.
ATTENTION
When conducting an electrical insulation resistance test,
isolate equipment sensitive to high test voltages, such as
meters, solid state devices, motor winding heaters,
capacitor units, etc.
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