5-94 750/760 Feeder Management Relay GE Multilin
5.7 S6 MONITORING 5 SETPOINTS
5
f) VT FAILURE
PATH: SETPOINTS ÖØ S6 MONITORING ÖØ EQUIPMENT ÖØ VT FAILURE
The 750/760 detects a VT fuse failure when there are significant levels of negative sequence voltage without correspond-
ingly significant levels of negative sequence current measured at the output CTs. Also, if there is not a significant amount of
positive sequence voltage when there is positive sequence current then it could indicate that all the VT fuses have been
pulled or the VTs have been racked out.
Figure 5–55: VT FAILURE LOGIC
VT FAILURE
[ENTER] for more
VT FAILURE
FUNCTION: Disabled
Range: Disabled, Alarm, Latched Alarm, Control
VT FAILURE
RELAYS (3-7): -----
Range: Any combination of 3 to 7 Auxiliary relays
VT FAILURE
DELAY: 10 s
Range: 0 to 60000 s in steps of 1
ENTER
ESCAPE
ð
ð
MESSAGE
ESCAPE
MESSAGE
ESCAPE
Courtesy of NationalSwitchgear.com
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