GE F650 Instruction Manual page 240

5 SETTINGS
5.5.4.4 SYNCHROCHECK STATES
Internal signals provided by the F650 (Actual> Status > Control Elements > Synchrocheck) for the synchronism
element are as follows:
Table 5–78: SYNCHROCHECK INTERNAL STATES
SYNCROCHECK BLK INP:
SYNCROCHECK OP:
SYNCHK CLOSE PERM:
SYNCROCHECK COND OP:
SLIP CONDITION:
BUS FREQ > LINE FREQ:
BUS FREQ < LINE FREQ:
VOLTAGE DIFFERENCE:
FREQ. DIFFERENCE:
Voltage and frequency values for the line and busbar can be obtained, both in primary and secondary values at:
Actual> Metering > Primary Values > Voltage
VBB Primary (KV)
VL Primary (KV)
Actual> Metering > Secondary Values > Voltage
Line Voltage (V)
Bus Voltage (V)
GEK-106310AB
SYNCHROCHECK ACTUAL VALUES
SYNCROCHECK BLK INP
SYNCROCHECK OP
SYNCHK CLOSE PERM
SYNCROCHECK COND OP
DL-DB OPERATION
DL-LB OPERATION
LL-DB OPERATION
SLIP CONDITION
BUS FREQ > LINE FREQ
BUS FREQ < LINE FREQ
VOLTAGE DIFFERENCE
FREQUENCY DIFFERENCE
Block signal for the synchrocheck element, configurable at Setpoint > Relay
Configuration > Protection Elements
Closing permission signal in live line-live bus conditions with open breaker.
General Closing permission of the Synchronism element. It contemplates all possible
situations, live line-live bus conditions, and the closing permission logics (dead line-
dead bus, live line- dead bus, dead line-live bus). Note: in case the Function is
disabled, the Closing permission signal will be activated in order not to interfere with
possible logics where it is included. If the synchronism element is enabled, this signal
will only be activated in the closing conditions established by setting.
Closing permission according to permission logics (DL-DB, LL-DB, DL-LB).
DL-DB OPERATION: Closing permission in dead line – dead bus condition.
DL-LB OPERATION: Closing permission in dead line – live bus condition.
LL-DB OPERATION: Closing permission in live line – dead bus condition.
Internal signal indicating frequency slip between the line voltage and bus voltage
phasors.
Busbar Frequency higher than line frequency
Busbar Frequency lower than line frequency
Voltage difference in Volts between line and busbar
Frequency difference in Hz between line and busbar
Busbar voltage in primary values
Line voltage in primary values
Line voltage in secondary values
Busbar voltage in secondary values
F650 Digital Bay Controller
5.5 CONTROL ELEMENTS
5-93
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