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GE Multilin 750/760 Feeder Management Relay 5-23

5 SETPOINTS 5.4 S3 LOGIC INPUTS

5.4.6 BLOCK FUNCTIONS

PATH: SETPOINTS ÖØ S3 LOGIC INPUTS ÖØ BLOCK FUNCTIONS

The logic input functions shown above block various operations within the relay. Protection elements will not detect faults,

send messages, or illuminate indicators when blocked, except for the

BLOCK TRIP 1 RELAY setpoint.

A system condition monitor such as Synchrocheck or Closing Spring Charged can be connected to the relay for close

supervision. If BLOCK CLOSE 2 RELAY is selected, this input must be de-asserted to permit operation of the Close Relay.

The

BYPASS SYNCHROCHECK setpoint provides a manual override of the synchrocheck monitor, so an operator can close

the feeder breaker without the programmed synchrocheck condition.

The

BLOCK BRKR STATISTICS setpoint blocks the accumulation of breaker statistical data found on the A3 MAINTENANCE ÖØ

TRIP COUNTERS and A3 MAINTENANCE ÖØ ARCING CURRENT actual values pages. This data includes breaker operation and

trip counters along with breaker arcing current. This input could be used during testing to prevent maintenance operations

from being accumulated.

 BLOCK FUNCTIONS

 [ENTER] for more

BLOCK 1 TRIP RELAY:

Disabled