Lucent Technologies Lineage
®
2000 50A -48V 364A-3 SR Series Rectifier
Issue 6 January 1997 Product Description 2 - 7
External Selective High-voltage Shutdown: If the plant
voltage is too high, the Lineage
®
2000 ECS controller will signal
all of the operating rectifiers that a high voltage is present. The
rectifier(s) causing the overvoltage will shut down. The
remaining rectifiers will continue operation.
Internal Selective High-voltage Shutdown: If the rectifier
voltage is too high (based on a user-selectable level), and the
rectifier is delivering at least 10% of its rated output current, the
rectifier will shut down. When rectifiers are operating in load
share mode and a high-voltage situation occurs, only the
defective rectifier will shut down. If the rectifier is connected to
a Lineage
®
2000 ECS controller, the internal high-voltage
shutdown will automatically be disabled and the controller will
furnish the selective high voltage shutdown signal. The
high-voltage shutdown level can be set in increments of 1.0 +0.5
volts between 50 and 58 volts by a DIP switch on the front of the
rectifier.
Backup High-voltage Shutdown: This circuit prevents damage
to the rectifier and its loads in the event of a high-voltage
condition. The rectifier monitors its output voltage and shuts
down when this voltage exceeds a user-selected threshold
programmed by DIP switches in the rectifier.
Output Current Limit: The rectifier provides a constant output
voltage up to its rated output current, at which point it provides
constant current. The output current is limited to less than 110%
of the rated output and no user adjustment is necessary.
Rectifier Test: A front panel switch is provided for
automatically raising or lowering the output voltage of the
rectifiers a small amount in order to test operation.
Lamp Test: This circuit allows the front panel display and
LEDs to be tested. When the unit is in STBY and the NL/FL
switch is pressed in either direction, all of the front panel LEDs
and meter segments will activate.
Restart Circuit: The rectifiers are compatible with the
automatic restart features of the Lineage
®
2000 ECS controller.
If a rectifier has been shut down due to high voltage, the plant
will try once to restart it automatically.
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