Lucent Technologies Lineage
®
2000 100A Ferroresonant Rectifier J85503A-1
Issue 6 October 1998
Product Description 2 - 3
the starting surge on the customer's power source and is
especially important with a more limited power source, such
as an emergency generator set.
•
External selective high voltage shutdown: If the battery
voltage goes too high, the controller signals all of the
connected rectifiers. This signal causes the rectifier(s) that
are delivering at least 10 percent of rated output current to
shut down. The remaining rectifiers continue to operate.
•
Backup high voltage shutdown: This circuit prevents
damage to the rectifier in the event of a high battery voltage
condition. Each rectifier senses its own output voltage and
shuts down when this voltage exceeds a preset value. This
circuit operates if the external selective high voltage
shutdown (SHVSD) fails to operate. This backup high
voltage shutdown (BUHVSD) operates from an
independent voltage source in accordance with Bellcore
standards.
•
Output current limit: The rectifier provides a constant
output voltage up to its rated output current, at which point
it provides constant current. When the output current tends
to increase above the rated output, the current limit circuit
overrides the voltage regulating signal and limits the output
current of the rectifier.
•
Back-up current limit: In addition to the output current
limit, the ferroresonant transformers self-limit current
output between 125-175 percent of full load, or 125-175
amperes.
•
Isolated output current indication: When used with a
Microprocessor Controlled System (MCS) controller, the
rectifier provides an isolated 2- to 10-volt signal,
corresponding to a range of no-load to 125 percent of rated
output load, which is used to indicate the rectifier drain on
the controller.
•
Safety interlocks: A series-loop circuit electrically
interconnects the control circuit modules and prevents
rectifier operation if an open circuit is detected.
•
Output capacitor fusing: A combination of a main fuse
and alarm fuse protects each output filter capacitor.
