Lucent Technologies Galaxy Power System 4848/100
4 - 4 Rectifiers Issue 5 June 2000
Features
Output Voltage
Adjustment
This feature allows the rectifier output voltage to be set through the
controller. See Table 9-B.
Output Current
“Walk-in”
This circuit controls the time (up to eight seconds) required for the
rectifier to reach normal operating conditions after it is turned on. This
feature minimizes the starting surge on the customer's power source.
Electronic Current
Limit
When the output current tends to increase above the current limit set
point (10% to 110% of rated output), the current limit circuit overrides
the voltage regulating signal and safely limits the output current of the
rectifier, thus preventing damage to itself, the battery, or the load.
Selective High
Voltage Shutdown
(SHVSD)
This feature allows the rectifier to respond and shut down at the output
high voltage threshold set through the Galaxy controller. See Table 9-B.
Backup High
Voltage Shutdown
(BHVSD)
This is a hardwired feature independent of the rectifier’s
microcontroller. This feature will operate even if the rectifier
microcontroller fails or communication with the Galaxy controller is
lost. See Table 9-B.
Restart Upon shutdown, the rectifier will attempt to restart. The rectifier will try
to restart three times before issuing a rectifier fail alarm to the controller.
The rectifier will also accept a restart command from the controller for
a remote restart.
Output Circuit
Breaker
The output circuit breaker located on the front panel protects the power
system from rectifier malfunction and may be used to disconnect the
rectifier from the system output bus.
Fan Alarm and
Control
The rectifier contains two cooling fans whose speed is based on ambient
temperature and output power level. The fan’s speed is lowered during
low-load and low-temperature conditions to minimize audible noise and
maximize fan life.
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