Lucent Technologies 415B Battery Plant for 4ESS
7 - 56 Retrofit of 415A Battery Plant
Issue 6 September 1999
5. Verify that the rectifier has an alarm and does not cause an
RFA, the PH LED lights at the rectifier, and that minor,
rectifier, and ac alarms are present at Galaxy.
6. Open the ac circuit breaker at the PDSC for the rectifier
under test.
7. Remove insulation installed in Step 3 and restore the ac
phase removed in Step 2.
8. Close ac breaker at PDSC that powers the rectifier under
test.
9. The rectifier restarts and all alarms clear.
10. Repeat this procedure for all rectifiers.
CB Leads
1. Turn off rectifier #1 and open the output dc circuit breaker
on the rectifier. Remove the REG fuse to the rectifier at the
Control and Distribution Bay.
2. Open the ac breaker to the rectifier at the PDSC.
3. Verify that the voltage on the output capacitors is less than
50 volts. If not, wait until the voltage is less than 50 volts.
4. At the rear of the output circuit breaker, remove the pair of
small gauge wires. These wires are used to send a trip
signal from the breaker to the Galaxy.
5. Restore the ac to the rectifier, turn the rectifier on and short
the two wires that were disconnected in Step 5.
6. Verify that a MIN alarm is displayed at the Galaxy, a PMN
is sent from the Galaxy, and the rectifier turns off.
7. Turn the rectifier off, remove ac to the rectifier at the
PDSC, wait until the voltage on the capacitors is less than
50 volts, and restore the wires previously disconnected
from the rear of the breaker.
8. Restore the ac at the PDSC; turn on the rectifier output
breaker using the procedure specified on the label above
the breaker.
