Lucent Technologies 415B Battery Plant for 4ESS
Issue 6 September 1999
Retrofit of 415A Battery Plant 7 - 59
HV and RS Leads
The following HV tests should only be performed with a test
load and on battery.
1. With all rectifiers on line and a plant load of approximately
20-40 amperes, adjust output of rectifier #1 up until it
assumes the total plant load from the other rectifiers.
Continue raising its output voltage until the plant HFV
(155.5 volts) alarm activates (RECT and MIN LEDs light).
2. Continue raising the output voltage until the rectifier
exceeds the HV threshold of the Galaxy (156.5 volts). At
this point rectifier #1 will shut down, allowing the plant
voltage to drop back to float, and the remaining rectifiers
will assume the load. After five seconds the rectifier under
test will restart, assume the load once more, and shut down
again from high voltage. This time the test rectifier stays
shut down and an RFA alarm is present.
3. Reduce the output voltage of rectifier #1 and restart it from
the Galaxy utilizing the path MENU
→
RECT RST.
4. Repeat the procedure for all rectifiers.
5. Adjust all rectifiers to a float voltage of 151.9 volts at the
battery terminals.
TR and TRH
Leads
1. At TB3, located at the rear of the Galaxy, short terminals 8
and 24 (TR1 and return). Rectifiers #1 and #2 will shut
down while leads are shorted. Observe that Galaxy
indicates that rectifiers #1 and #2 have been externally shut
down. The path is MENU
→
ALARM. Remove the short
and verify that the rectifiers restart.
2. Short terminals 9 and 24 (TR2 and return). Rectifiers 3 and
4 (if provided) shut down while leads are shorted. Observe
that Galaxy indicates that rectifiers #3 and #4 have been
externally shut down. The path is MENU
→
ALARM.
Remove the short and verify that the rectifiers restart.
Equalize/Boost
Leads
1. Apply a 20 - 30 amperes test load.
2. From front panel of Galaxy, activate Boost command. The
path is MENU
→
MODE
→
ENTER. Verify that each
rectifier raises its output voltage to 156V.
