GE Industrial Solutions Entellisys 4.0 System User Manual - Manual (Page 87)

Single Point Relay protection 87
5
Pickup: Adjust the HRGF pickup from 0.1 Amps to 10 Amps in increments of 0.1 Amp from the
Pickup Setting drop-down menu.
Delay: Adjust the HRGF delay from 0.5 to 5 seconds in increments of 0.1 second from the Time
Delay drop-down menu.
Ground Resistance: Enter the untapped system ground resistance from 5 to 500 ohms in
increments of 1 ohm.
Figure 5-11 High Resistance GF settings
5.2.8.4 Usage
The High Resistance Ground Fault Relay goes into pickup if the ground current is above the
pickup threshold and generates an alarm if the ground current remains above the threshold for
longer than the delay setting.
5.2.8.5 Event logging
The HRGF relay generates the following events:
•
Pickup High Resistance GF – when the alarm function enters pickup
•
Alarm High Resistance GF – when the alarm function operates
•
Drop out High Resistance GF – when the alarm function drops out
To view these events, click Sequence of Events on the Main Menu.