GE Industrial Solutions Entellisys System User Manual - Manual (Page 215)

Alarms and events description and system troubleshooting guide 215
A
Voltage Above Undervoltage
Blocking Voltage The voltage on at least one of the three
phases has exceeded the undervoltage
blocking voltage threshold.
Alarm Pickup Overvoltage Alarm only overvoltage relay has entered
pickup
Alarm Overvoltage Alarm only overvoltage relay has operated
Alarm Dropout Overvoltage Alarm only overvoltage relay has dropped
out of pickup
Pickup Overvoltage Overvoltage relay has entered pickup
Breaker Trip Overvoltage Overvoltage relay has operated
Dropout Overvoltage Overvoltage relay has dropped out of pickup
Alarm Pickup Phase Loss Alarm only phase loss relay has entered
pickup
Alarm Phase Loss Alarm only phase loss relay has operated
Alarm Dropout Phase Loss Alarm only phase loss relay has dropped out
of pickup
Voltage Below Phase Loss Alarm
Blocking Voltage The voltages on all three phases have
dropped below the alarm only phase loss
blocking voltage threshold.
Voltage Above Phase Loss Alarm
Blocking Voltage The voltage on at least one of the three
phases has exceeded the alarm only phase
loss blocking voltage threshold.
Pickup Phase Loss Phase loss relay has entered pickup
Breaker Trip Phase Loss Phase loss relay has operated
Dropout Phase Loss Phase loss relay has dropped out of pickup
Voltage Below Phase Loss
Blocking Voltage The voltages on all three phases have
dropped below the phase loss blocking
voltage threshold.
Voltage Above Phase Loss
Blocking Voltage The voltage on at least one of the three
phases has exceeded the phase loss blocking
voltage threshold.
Relays - High Current
Alarm Pickup High Current High current relay has entered pickup
Alarm High Current High current relay has operated
Alarm Dropout High Current High current relay has dropped out of pickup
Table A-2 Sequence of events description and troubleshooting guide
Event Description Notes and Troubleshooting tips