GE Industrial Solutions GPS4827 - Manual (Page 18)

Galaxy Power System GPS4827
16
Features
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.
Output Protection
Rectifier is equipped with an internal fuse for plant protection if a fault
occurs in a rectifier.
Electronic Current Limit
When the output current tends to increase above the current limit set
point, the current limit circuit overrides the voltage regulating signal and
safely limits the output current of the rectifier, thus preventing damage to
itself or the load.
High Voltage Shutdown (HVSD)
The rectifier senses the voltage at its output terminals. If this voltage is too
high, the rectifier will shut down to prevent the high voltage from damaging
itself or the load.
Restart
Upon shutdown, the rectifier will attempt to restart. The rectifier will also
accept a restart command from the controller for a remote restart. The
rectifier will attempt to restart three times before issuing a rectifier fail
alarm to the controller.
Fan Alarm and Control
The rectifier contains a cooling fan. The fan’s speed, which is based on
ambient temperature and output power level, is lowered during low-load
and low-temperature conditions to minimize audible noise and maximize
fan life.