Lucent Technologies 415B Battery Plant for 4ESS
Issue 6 September 1999
Retrofit of 415A Battery Plant 7 - 47
System Test
Procedures
Rectifier Walk-in
1. With only one rectifier turned on, adjust the battery plant
load to be 130-140 amperes. The rectifier assumes full
load.
2. Turn the rectifier off via the POWER switch; wait 5
seconds, then turn it back on. The rectifier walks in and
assumes full load within 10 seconds.
3. Turn the POWER switch to Off.
4. Repeat Steps 1 through 3 for all rectifiers (one rectifier on
line at a time).
Warnings
A limited recharge alarm may occur at the Galaxy
Controller during these tests.
Whenever rectifiers have been turned on, their output
filter capacitors stay charged for several minutes. Do not
place hands inside a rectifier until these capacitors have
discharged to a safe level (below 50 volts).
Remember that this is a 140V (nominal) battery plant.
Personal safety must be considered at all times while
working on this plant. The batteries will be floating at
151.9 volts.
When power is removed from the rectifier, the display
may stay lit until the dc output voltage is less than 30
volts.
Note
Always open the load between tests to keep batteries from
discharging.
Note
Alarms may be present in the Galaxy Controller. Overlook
them during this test.
