Lucent Technologies 415B Battery Plant for 4ESS
Issue 6 September 1999
System Testing 5 - 15
PH Leads
This test is done with the battery connected to the Control and
Distribution Bay and with 10 - 20 amperes of plant load with all
rectifiers on.
1. Open ac breaker at PDSC for rectifier #1.
2. At a convenient location, e.g., at the rectifier input, remove
one ac phase powering rectifier #1.
3. Insulate the open lead at the side coming from the PDSC.
4. Turn on the breaker at the PDSC.
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.
2. Remove the REG fuse to the rectifier at the Control and
Distribution Bay.
Warning
Extra care should be taken while performing the following
test. It requires removing a phase of the incoming ac. Before
performing any operation, use a DMM to verify the circuit is
not live.
Wear rubber gloves.
