Lucent Technologies SLC 5 Series - Page 180

Advance Printing
363-205-401 Power Up: DLP-523
Issue 7, March 1997 Page 5 of 6
13. Coat each battery connection with NO-OXid grease.
14. Condition DMM to measure DC volts. Measure battery string voltage at the
connector (marked
STR
"
+
" and "−") at the end of the battery string cable.
Make sure measured polarity corresponds with polarity indicated on connec-
tor.
15. Does meter indicate battery string voltage −50.4 V DC or higher?
If
YES
, then proceed to Step
16.
If
NO
, then continue with Step
15.
16. Make sure that there are twelve batteries in the string. Recheck battery con-
nections and correct if necessary. If connections are correct, check individual
battery voltage. Any battery that indicates less than 4.20 V DC should be
replaced.
17. Connect the battery string cable
STR
connector to the connector designated
STR( )
(1 or 2) on the end of the battery cable located in the battery compart-
ment. Verify battery cable
J140
is plugged in
P140
on the side of the power
shelf.
18. Dress cables in the battery compartment.
19.
NOTE:
To measure the battery string voltage accurately, disconnect any battery
strings other than battery string being measured. [To disconnect other
battery strings, unplug the battery string cable connector marked STR
from the battery cable connector marked STR( ).]
On power shelf connect DMM to
(1A/mV) -
and
VOLTAGE +
(bottom 2 jacks).
Turn AC circuit breaker off.
20. Does meter indicate battery string voltage of 50.4 V DC or higher?
If
YES
, then proceed to Step
21.
If
NO
, then continue with Step
20.
21. Check the four 30 Amp fuses on the
AUG4 BIU
. Visually inspect cable assem-
bly between power shelf and battery string. Replace cable assembly fuse
and/or cable assembly and
AUG4 BIU
until meter indicates correct voltage.
22. Is this the last battery string to be installed?
If
YES
, then proceed to Step
22.
If
NO
, then repeat from Step
1
for next battery string to be installed.