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Installation
I
R
NSTALLING
ECTIFIER
Before starting this procedure, ensure that AC load center circuit breakers CB2 and CB3 are set
to OFF (open). Failure to do so could result in serious injury and equipment damage.
Use an ESD wrist strap to prevent static discharge. An ESD ground connection is provided on
the multiplexer shelf.
A Fluke 79 Digital Multimeter (DMM) and TL20 Industrial Test Lead Set (or equivalent) are needed
to complete this procedure.
Modular Power Supply Shelf
The modular power supply shelf (rectifier shelf) and DC Distribution Panel (below the rectifier shelf) are shown
in
Figure
33. For the rectifier module controls and indicators, see
For the Alarm and Control Assembly (ACA) controls and indicators, see
page
41.
DO NOT ADJUST
FLOAT
VARIES WITH TEMP.
FLT
FAN FAIL
AC ON/
RFA
DC OUTPUT
+
CAL VOLTS
(-48.2V)
+
OUTPUT
CUR
P/N 73-16-606
1
2
-48V
RTN
-48V
RTN
Figure 33. Modular Power Supply and DC Distribution Panel
38
M
ODULES
AC OUTPUT
CAP
CHARGE
F1
06A 250V
TOTAL AMPERAGE
OUTPUT
BREAKERS-80A MAX
GMT FUSES-50A MAX
COMBINED-80A MAX
-48V
RTN
3
4
5
6
-48V
RTN
-48V
RTN
-48V
RTN
-48V
RTN
-48V
November 9, 2001
Figure 34 on page 39
Figure 35 on page 41
MAX FUSE 15A
FUSE
ALARM
1
5
10
15
20
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
LTPS-UM-8007-01, Issue 1
and
Table 2 on page
39.
and
Table 4 on
BATTERY
DISCONNECT
BATTERY
TEST
ALARM
DISCONNECT
BATTERY DISCONNECT
18
19
20
NO
C
NC
-48V
RTN
17
18
19
20
NO
C
NC
FUSE ALARM
SPX-CABFIN01, SPX-CABFIN04
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