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118
FieldSmart
®
Fiber Active Cabinet (FAC) 3200
Installation Manual
_________________________________________________________
Step 1:
Step 2:
Replacing DC Breakers and Fuses
If a DC circuit breaker or fuse fails or becomes damaged, you can replace the breaker or fuse in the field as described
below.
Replacing Breakers
Circuit breakers protect the power circuits for the equipment shelves and battery strings. The breakers are located inside the
rectifier fuse panel area (optional Valere rectifier) or at distribution panel.
DANGER!
High voltage may be present. Only a qualified electrician should perform this task. Follow NEC and
local codes when handling power systems.
WARNING!
Risk of electric shock. The following procedure can be performed with the breaker assembly hot,
provided that the new breaker is installed in the OFF position.
Note:
To avoid an interruption of service, you can replace breakers while the distribution system is hot. The bullet-style
breakers used with optional Valere rectifier can be removed with no wiring disconnections. Refer to the rectifier product
manual for more information. If you elect to replace a breaker with the power off, wait until a maintenance window to mini
-
mize service impact. To disconnect power to the breakers, switch the 30A Rectifier A and Rectifier B breakers OFF at the AC
load center and switch the 40A battery breakers OFF at the rectifier fuse panel, then perform the procedure.
To replace a DC circuit breaker
At the rectifier shelf, open the fuse panel door (optional Valere rectifier). Verify that the breaker to replace is
OFF
.
Remove the identified circuit breaker from the housing. The breaker pulls straight out with no connected wiring.
Step 3:
Step 4:
Step 5:
WARNING!
Risk of electric shock. Set the new breaker to the OFF position before installing it.
Install the new breaker into the vacated housing position.
Switch the new breaker to
ON
.
Close the fuse panel door.