GE Industrial Solutions Galaxy Verification - Manual (Page 26)

Galaxy Power System Verification Procedures
2 - 14 Galaxy SC Controller Performance Verification Procedures Issue 3 January 2008
High Float Voltage Alarm/High Voltage Shutdown Alarm
Tests, continued)
HVSD Test
Procedure for
Serial Rectifiers,
continued
Step Action
7 Observe the following:
• When the voltage increases to the HV (FLOAT) level the
rectifier shuts down.
• The Green ON LED on the rectifier blinks, the ALM
LED on the rectifier is not lit.
• After 5-6 seconds the rectifier initiates its own restart
signal again, raising the plant voltage.
• The rectifier will shutdown and restart three additional
times.
• Upon the fourth shutdown, the rectifier's ALM LED
lights and the rectifier's display indicates “HO.”
• The controller receives the RFA signal from the rectifier
and initiates a restart signal 5-6 seconds later.
• The rectifier restarts again, raising plant voltage.
• The rectifier shuts down and restarts four additional
times.
• During these shutdowns the Green ON LED on the
rectifier blinks, the ALM LED on the rectifier is not lit.
• Upon the fourth shutdown, the rectifier's ALM LED
lights and the rectifier’s display indicates “HO.”
• An external RFA office alarm is generated.
Continued on next page.