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Installation
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
12
At the load center (in the end chamber), set AC circuit breakers CB2 and CB3 to ON. These circuit breakers
provide AC power to the left and right rectifier modules, respectively.
13
At rectifier module No. 1, set the DC OUTPUT and AC INPUT circuit breakers to ON. Verify that (only) the
rectifier module No. 1 AC ON/RFA LED is lighted green.
14
Allow the rectifier module to operate for 10 minutes (minimum) to ensure that the rectifier has stabilized.
15
Using a DMM, measure the rectifier output voltage. At the terminal strip at the left side of the DC Distribution
Panel, connect the DMM (-) lead to a -48 Vdc terminal point and (+) lead to the RTN terminal below an
installed circuit breaker as shown in
Measure the air temperature in the area of the battery temperature compensation module. Using the chart in
Figure 40 on page
45, find the correct float voltage, for example, -54.5 Vdc at 77°F (25°C).
44
DO NOT ADJUST
FLOAT
VARIES WITH TEMP.
FLT
FAN FAIL
AC ON/
RFA
AC INPUT
DC 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
MAX BREAKER 30A
Figure 38. Installing Alarm and Control Assembly
Figure
39.
Figure 39. Battery Voltage Test Points
November 9, 2001
AC INPUT
CAP
CHARGE
F1
06A 250V
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
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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