Lucent Technologies Lineage
®
2000 200A Ferroresonant Rectifier J85503B-2
6 - 18 Testing
Issue 8 January 1999
Phase Failure
Test
1. With the Power switch still On, turn off the ac service and
note that the rectifier shuts down.
2. Verify that no ac voltage is present on the input leads of
the ac contactor K1 (Figure 5-3).
3. Disconnect one input lead, L1, L2, or L3 on K1, or at the
ac service panel, whichever is more convenient. Insulate
the lead.
4. Turn on the ac at the service panel. The rectifier should not
restart.
5. Turn off the ac at the service panel and reconnect the input
lead.
6. Turn on the ac at the service panel. The rectifier should
restart.
Backup High
Voltage
Shutdown
(BUHVSD) Test
1. Turn both the rectifer Power switch and dc output circuit
breaker OFF (down). At the plant controller (if present),
remove the regulation fuse assigned to the rectifier being
tested.
2. Set a DMM to measure 54 volts, and connect it between
the rectifier input conductor at the bottom of CB1 and dc
output return.
3. Slowly turn the Float Adj potentiometer clockwise until
the rectifier shuts down. This should occur at the voltage
corresponding to the switch settings for BUHVSD. The
RFA lamp on the rectifier should light.
4. Turn the Float Adj potentiometer counterclockwise four
turns.
5. Restart the rectifier by turning the Power switch Off then
back On.
6. Adjust the voltage to approximately 52.0 (26.0) volts. The
RFA lamp on the rectifier should go out.
7. Turn OFF the rectifier Power switch once again, and
CLOSE (turn on) the dc output circuit breaker (up) within
5 seconds. Then, at the plant controller (if present), replace
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