GE Multilin G650 Manual page 421

A.1 LOGIC OPERANDS
OPERANDS - G650 - MODEL FX - GX
A INTERNAL SYSTEM STATUS (CONT.)
Breaker Status
Breaker Failure(Enhanced models only)
Synchrocheck
Default Channel (not used)
A-26
BREAKER OPEN
BREAKER CLOSED
BREAKER UNDEFINED Breaker undefined (52a and 52b have the same status)
BKR FAIL INITIATE
BKR FAIL NO
CURRENT
BKR FAIL
SUPERVISION
BKR FAIL HISET
BKR FAIL LOWSET
INTERNAL ARC
BKR FAIL 2nd STEP
Synchrocheck BLK INP
Synchrocheck OP
SYNCHK CLOSE PERM Closing permission for the synchronism element:
Synchrocheck COND
OP
DL-DB OPERATION
DL-LB OPERATION
LL-DB OPERATION
SLIP CONDITION
BUS FREQ > LINE
FREQ
BUS FREQ < LINE
FREQ
Default Channel
G650 Generator Protection & Control System
Breaker Opened
Breaker closed
Breaker failure initiation
Breaker failure without current
Breaker failure 1st level (supervision – retrip)
Breaker failure 2nd level (high level)
Breaker failure 3rd level (low level)
Internal arc
Breaker failure second step
Synchronism element block
Synchronsim condition (Dv, Dj and Df are within the set
range)
(SYNCHK OP) OR (SYNCHK CON OP)
Active if when it is set, any of the three following
conditions is met:
Dead line – dead bus condition
Dead line – live bus condition
Live line – dead bus condition
Slip conditions are met
Bus Frequency higher than line frequency
Bus Frequency lower than line frequency
Channel not used
APPENDIX A
GEK-113285A