Lucent Technologies Lineage
®
2000 25A Ferroresonant Rectifier J85502A-1
Issue 4 May 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.
•
Internal selective high voltage shutdown: If the rectifier
voltage goes too high, and it is delivering at least 10 percent
of its rated output current, the rectifier shuts down. If the
rectifier is connected to a Lineage
®
2000 controller, this
feature must be deactivated and the controller furnishes the
external selective high voltage shutdown (HVSD).
•
External selective high voltage shutdown: If the battery
voltage goes too high, the Lineage
®
2000 controller signals
all of the connected rectifiers. This signal causes the
rectifier(s) delivering at least 10 percent of rated output
current to shut down. The remaining rectifiers continue
operating. Straps on the CM1 option board must be set for
List WB. See Table 8-B in this manual.
•
Backup high voltage shutdown: This circuit prevents
damage to the rectifier in the event of high battery voltage.
Each rectifier senses its own output voltage and shuts down
when this voltage exceeds a preset value. This circuit
operates if the external selective HVSD fails to operate.
This backup HVSD operates from an independent voltage
source per 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.
•
Voltage monitor circuit: This circuit monitors the ±5 and
±12 volt dc bias voltage on the control board. This circuit
shuts down the rectifier and issues an RFA alarm when
those voltages fall outside acceptable levels.
•
Backup current limit: In addition to the output current
limit, the ferroresonant transformers self-limit current
output between 125-175 percent of full load, or 31.25-43.75
amperes.
•
Isolated output current indication: When used with a
Microprocessor Controlled System controller, the rectifier
