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Millennium SC_MAN
Rev 2.0
Install Parallel Rectifiers Regulation Fuses
CAUTION
Disconnect Parallel Rectifier
When parallel rectifier regulation fuses are pulled, the following will occur:
•
The rectifier will switch to internal regulation.
•
ABB rectifiers automatically switch to internal regulation.
•
Non
-
ABB rectifiers must be manually configured for internal regulation.
•
Consult the rectifier manual for method of configuration for internal regulation.
•
The system voltage will decrease.
NOTE
This requires a readjustment of the rectifier output volts adjust potentiometer as
detailed in the following steps.
Step
Action to Install Parallel Rectifiers Regulation Fuses
1
Observe and record the output current of each rectifier.
2
Turn the rectifier power switch OFF, regardless of whether a readjustment is necessary.
3
Is the rectifier a ABB rectifier with automatic internal voltage sense?
Yes –
Proceed to Step 6.
No –
Proceed.
4
Convert the rectifier to external voltage sense.
Consult the rectifier manual for details.
5
Connect external voltage sense leads at the rectifier.
These leads were disconnected earlier.
6
Install the associated rectifier regulation
fuse on the Fuse Card
Rect A1 to Rect A8,
or
Rect B1 to Rect B8
Fuse Card
Figure 54 Rectifier Regulation Fuse