GE Industrial Solutions GPS 4848_100 Users Guide (dual rectifier shelf) - Manual (Page 37)

Galaxy Power System 4848/100 with Dual Rectifier Shelf
Issue 5 September 2011 Rectifiers 4 - 3
Features
Output Voltage
Adjustment
This feature allows the rectifier output voltage to be set and regulated by
the controller.
Output Current
“Walk-in”
This feature 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 (30% to 100% of maximum output), the current limit circuit
overrides voltage regulation and load share to safely limit 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.
Backup High
Voltage Shutdown
(BHVSD)
This is a hardwired feature independent of the rectifier’s
microcontroller. This feature is always active and will operate whether
communicating with the controller or not and whether the rectifier's
microcontroller is active or failed.
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.