Power-Style™ QED-2 Switchboards
Section 5—Pre-energizing Checkout Procedure
36
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Section 5—Pre-energizing Checkout Procedure
Conduct a complete inspection
before
the switchboard is energized to ensure that
all components function and operate properly.
Complete every step of the
checkout procedure listed before energizing the switchboard.
1. Check all field-installed bus bar connections. Torque values are listed in
“Section 9—Torque Values for Electrical Connections” on page 51.
2. Check all accessible connections for tightness.
3. Check all factory- and field-installed lug terminations for tightness.
4. Check the rigidity of all bus bar supports.
5. Check the switchboard enclosure for dents or other damage that reduces
electrical clearances inside the switchboard.
6. Remove all foam blocks, or other temporary cushioning or retaining material,
from the electrical devices.
7. Manually open and close all switches, circuit breakers, and other operating
mechanisms, checking for correct alignment and free operation.
8. Operate all electrically operated switches, circuit breakers, and other devices
equipped with remote operators (not under load). An auxiliary source of control
power may be necessary to accomplish this.
9. Check all relays, meters, and instrumentation to verify that all field- installed
wiring connections are made properly and that the devices function properly.
10. Current transformers (CTs) supplied for customer use require connection to a
metering device load before energizing. Verify that the metering device load is
properly connected, including main switchboard connections to remote equipment.
11. All CT circuits supplied by Schneider Electric for customer metering use are
shorted for shipment. Remove shorting terminal screws on shorting terminal
blocks or jumpers and store in the block.
12. Factory-installed circuit breakers may have an adjustable magnetic or
electronic trip which is factory set to the lowest setting. To provide coordinated
operation during a fault, adjust the trip as outlined in the instruction manual
provided with the circuit breaker. All poles are adjusted simultaneously, using a
screwdriver, by the single setting.
13. If ground fault protection is furnished on type BP switch, adjust the relay to
the desired ground current pickup setting. The relay is shipped from the
factory at the lowest setting of 120 A for the relay. Relay pickup range is from
120–1,200 A for the relay.
NOTE:
For molded case circuit breakers, refer to “Section 11—
Reference Publications” on page 54 for circuit breaker information.
14. Check the torque on all bolts of the fuses mounted in Bolt-Loc™ switches, 21–30
lb-ft (28–41 N•m), and in QMB/QMJ/QMQB
1
switches (as marked on the device).
1
QMQB switches are available in Canada only.
NOTICE
HAZARD OF FUSE CLIP OVERHEATING
Do not pry open or spread the fuse mounting clips. Doing so can cause a loose
connection, resulting in overheating.
Failure to follow these instructions can result in equipment damage.
