GE 750 - Negative Sequence Instantaneous Overcurrent

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GE Power Management 750/760 Feeder Management Relay 12-

12 S5 PROTECTION 12.6 NEGATIVE SEQUENCE

12.6.3 NEGATIVE SEQUENCE INSTANTANEOUS OVERCURRENT

A instantaneous overcurrent element operating on the negative sequence component of current, ANSI device

46 is programmed in this subgroup.

■ NEG SEQ INST OC

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The Negative Sequence Instantaneous Overcurrent setpoints path is:

\ SETPOINTS \ S5 PROTECTION \ NEGATIVE SEQUENCE \ NEG SEQ INST OC

NEG SEQ INST OC

FUNCTION: Disabled

Range: Disabled, Trip, Trip & AR, Alarm, Latched Alarm, Control

Select the required function.

NEG SEQ INST OC

RELAYS (3-7): -----

Range: Any Combination of the 3-7 AUXILIARY Relays

Select the output relays required.

NEG SEQ INST OC

PICKUP: 1.00 x CT

Range: 0.05 to 20.00 in steps of 0.01 x CT

Select the current level in terms of the CT rating. For example, if 100:5 phase

CTs are installed, enter

1.00 x CT

for a negative sequence instantaneous over-

current trip of 100 A.

NEG SEQ INST OC

DELAY: 0.00 s

Range: 0.00 to 600.00 in steps of 0.01 s

Select the delay required.

NEG SEQ INST OC

DIRECTION: Disabled

Range: Disabled, Forward, Reverse

Select the direction(s) of current flow for which operation is permitted.

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