Lucent Technologies Lineage
®
2000 400A, 60Hz Ferroresonant Rectifier J85503C-3
6 - 10 Testing
Issue 10 July 2000
Phase Failure
Alarm (PHA) Test
1. Set the load to 200-240A, 50 to 60 percent of the rectifier's rated
amperage.
2. With the Power switch still On, turn off the ac service and note
that the rectifier shuts down and that both the PWR and MAN
lamps on the test set go off.
3. Verify that no ac voltage is present on the input leads of the ac
contactor K1.
4. Disconnect one input lead, L1, L2, or L3 on K1, or at the ac
service panel, whichever is more convenient. Insulate the lead.
5. Turn on the ac at the service panel. The rectifier should not restart,
and the PWR, MAN, and PH lamps on the test set should light.
The PHA lamp on the rectifier should light.
6. Turn off the ac at the service panel and reconnect the input lead.
7. Turn on the ac at the service panel. The rectifier should restart. On
the test set, only the PWR and MAN lamps should light.
Backup High
Voltage Shutdown
(HVSD) Test
1. Reduce test load to 0 amperes. Disable the internal selective
HVSD by opening S3.5 on CM2. Move switch to the left. See
Figure 6-3.
2. Slowly turn the Float Adj potentiometer clockwise until the
rectifier shuts down.
3. When the rectifier shuts down its voltage should correspond to the
settings of S3.1 through S3.4 of the CM2 control board. The
factory setting is 59.5± 0.5 volts. The RFA LEDs on the rectifier
and the test set should light.
4. Turn the Float Adj potentiometer counterclockwise four full
turns.
5. Restart the rectifier using the RS switch on the test set.
6. Adjust the voltage to approximately 52.0 volts. The RFA lamps on
the rectifier and the test set should go out.
7. To enable ISHVSD, close S3.5 on CM2.