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12-32 Cabinet maintenance operations
Procedure 12-7
Connecting emergency standby power - ac load
box option with mechanical interlock
Use this procedure to connect emergency standby power to the S800A cabinet
when the ac load box with a mechanical interlock system is installed.
Each rectifier requires 2500 watts at 220 volts of emergency generator power.
Generators equipped with GFI protection can be used in this application; if the
GFI is disabled, the generator cannot be used. The GFI is typical of small,
noncommercial type generators.
Tools required
There are no special tools required to perform this procedure.
Action
Step
1
2
3
4
5
6
7
8
9
10
11
12
AccessNode 323-3001-210 Issue 1.0
Action
Open the cabinet right side ac compartment door.
Fully engage the door restraint bar.
Turn the 60 A MAIN circuit breaker to ON so that the 30 A EMERGENCY
POWER circuit breaker is OFF (see Figure 12-5 on page 12-33).
Locate the emergency connector on the bottom panel below the ac load
center (see Figure 12-6 on page 12-34).
Remove the cover from the emergency generator connector.
Note: Hubbell connectors have a flip cap; Crouse-Hinds connectors have a
screw-on cover.
Plug in the mating female Hubbell or Crouse-Hinds connector from the
available generator.
Power-up the emergency generator.
Allow it to stabilize for at least five minutes (follow local practices).
Turn the 60 A MAIN circuit breaker to OFF so that the 30 A EMERGENCY
POWER circuit breaker is ON (see Figure 12-5 on page 12-33).
Release the door restraining rod.
Close the ac compartment door.
Emergency standby power is now connected.
—continued—
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