Lucent Technologies Lineage
®
2000 125A Ferroresonant Rectifier J85502C-1
Issue 8 July 1999
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 is 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 controllers signal
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.
•
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 when this
voltage exceeds a preset value, it shuts down. This circuit
operates if the external selective HVSD fails to operate.
This backup HVSD operates from an independent voltage
source per Bellcore standards.
•
Voltage monitor circuit module: This circuit monitors the
± 5 and ± 12 biased dc supply voltages on the 205A1
control board. The circuit shuts down the rectifier and issues
an RFA alarm when these voltages fall below acceptable
levels.
•
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 156-219
amperes.
