GE Industrial Solutions Entellisys 5.0 User Manual - Manual (Page 97)

Advanced Protection Relays 97
5
5.3.2.5 Manual Mode
Entellisys provides the ability to manually pulse the contactor either for testing purposes or to
locate the fault downstream of Entellisys. When the location function is started manually, the
location relay will attempt to locate the feeder and continue to pulse the contactor until the time
it is stopped by the user.
To place the HRGF Location in manual mode, click on the HRGF Location button from the
Events screen.
To Start, wait until automatic mode is idle and choose the function (if more than one function is
enabled) and click start or stop. The contactor will begin pulsing indefinitely.
After initiating the manual mode, the screen may be closed and the contactor will continue to
pulse. Return to the Manual Mode to stop the contactor pulsing.
Figure 5-16 HRGF Location manual mode screen
5.3.2.6 Events and Alarms
Events
Start and Stop events: Each location relay will log an event when HRGF is started and
stopped either automatically or manually.
Location Events: Upon location of the ground fault, the CPU will log an event listing the
name of the located feeder breakers
Trip events: An event is logged when the Location Relay is in pickup, dropout or trips the
feeder breaker with the ground fault
Alarms
The CPU provides the following alarm functionality for the HRGF Location feature, irrespective of
the fault being located by either automatic or manual mode:
The High Resistance GF Location Alarm will activate the alarm upon location of the ground
fault. The alarm, if acknowledged, will return to an un-acknowledged state if the fault is not
cleared before the re-alarming delay or recheck delay.
The Trip Alarm will alarm when the HRGF Location relay issues a trip command.