363-205-401 Power Up:
Issue 7, March 1997 Page 1 of 6
DLP-527
Install and Test Power Units in Rectifier Shelf
SUMMARY:
Install CS787B540 power units. Connect AC input and turn on AC
power. On power units, measure float voltage. Requirement: between −54.3 V DC
and −54.7 V DC. Connect output and control cables to power units. Requirement:
NORMAL
indicator lighted on control & distribution panel. Measure power unit output
voltage. Requirement: between −54.3 V DC and −54.7 V DC. On control &
distribution panel, turn on
CB( )
circuit breaker(s) for systems to be installed.
1. On AC power panel, verify that AC power
CB1
(utility) circuit breaker is off and
CB6
,
CB7
, and
CB8
circuit breakers for R1, R2, and R3 feeders to rectifier
shelf are also off [Figure 1].
2. Release cover from front of rectifier shelf.
3. Get
CS787B540
power unit (48 V DC, 25A OLS rectifier) and inspect for dam-
age.
4. On rectifier shelf, set power unit in
RECTIFIER 1
,
RECTIFIER 2
, or
RECTI-
FIER 3
, position for power unit being installed [Figure 2]. Connect
P905-( )
(P905-1, P905-2, or P905-3) AC input cable to
J905/V IN
connector on power
unit [Figure 3].
Comment: These power units have no backplane connector. Power and
control cables plug in to connectors on right-hand side of
power unit.
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