Lucent Technologies Lineage
®
2000 400A, 60Hz Ferroresonant Rectifier J85503C-3
Issue 10 July 2000
Product Description 2 - 7
Charger Fail
Alarm (RFA/CFA)
An RFA/CFA alarm is transmitted to the interface board when the ac
input fails or the RFA relay operates.
Manual Alarm
(MAN)
A MAN alarm signals the interface board and a Lucent Technologies
controller, if present, when either the rectifier has been turned off or lost
power.
AC Fail (ACF)
If the three-phase commercial ac into the rectifier fails and the rectifier
is connected on battery, the ACF alarm is generated and a red LED on
the front of the rectifier lights.
Circuit Breaker
Alarm (CB)/Output
Fuse Alarm Switch
An output circuit breaker alarm signals the interface board and a Lucent
Technologies controller, if present, when the circuit breaker trips or
when the output fuse opens, which closes the output fuse alarm switch.
Phase Monitor
Circuit (PHA)
The phase monitor circuit signals a Lucent Technologies controller, if
present, when the input voltage decreases to less than 70 present of the
nominal value, or when the voltage on any phase is completely missing.
If the rectifier is supplying less than 20 percent of its rated output, 80
amperes, the rectifier may remain operational; if it is supplying more
than 80 amperes, the rectifier shuts down. When the rectifier shuts
down, a limited output alarm, LOA, issues to a controller and to the
interface board.
Unbalance Alarm
Circuit
A severe unbalance developed in the rectifier triggers the rectifier fail
circuit. The rectifier shuts down and an alarm is generated. This
shutdown of the rectifier has a delay to prevent false operation from
transient disturbances, such as may occur during initial turn-on.
Low Current
Alarm (LCA)
If the forced electronic load share feature is enabled and any rectifier is
providing less than 8 percent of its rating, a low current alarm issues.
The alarm issues at 0.5 percent of the rectifier rating and discontinues at
3 percent.