GE F650 Instruction Manual page 238

5 SETTINGS
5.5.4.3 SETTINGS
Setpoint > Control Elements > Synchrocheck
There is only one synchrocheck element in the F650.
Table 5–77: 25 ELEMENT SETTINGS
SETPOINT > CONTROL ELEMENTS > SYNCHROCHECK
SETTING DESCRIPTION
Function permission
Dead bus voltage level
Live bus voltage level
Dead line voltage level
Live line voltage level
Voltage Difference
Angle Difference
Frequency Slip
Breaker Closing time
Dead Line – Dead Bus Function permission
Live Line – Dead Bus Function permission
Dead Line – Live Bus Function permission
Snapshot event generation
Settings description for element 25:
Function permission (Function): This setting allows enabling and disabling the synchrocheck element.
Voltage Level determination settings for busbar and line:
This setting group allows determining the voltage levels considered as dead and live for line and busbar voltage.
Dead Bus voltage level (Dead Bus Level):
Live Bus voltage level (Live Bus Level):
Dead Line voltage level (Dead Line Level):
Live Line voltage level (Live Line Level):
Synchrocheck settings (live bus, live line):
F650 relays verify synchronism by establishing and comparing three basic parameters: the difference in module and angle
of voltage phasors, and the frequency slip of a phasor related to the other one. synchrocheck settings include a fourth time
setting, that allows using an anticipative algorithm to issue a closing signal.
Voltage Difference (Max Volt Difference):
Angle Difference (Max Angle Difference):
Frequency Slip (Max Freq Difference):
Breaker Closing time (Time):
GEK-106310AB
NAME DEFAULT
VALUE
Function DISABLED
Dead Bus Level 10.00
Live Bus Level 50.00
Dead Line Level 10.00
Live Line Level 50.00
Max Volt Difference 10.00
Max Angle Difference 10.0
Max Freq Difference 20
Time 0.50
DL-DB Function DISABLED
LL-DB Function DISABLED
DL-LB Function DISABLED
Snapshot Events ENABLED
Voltage level considered as dead bus
Voltage level considered as live bus
Voltage level considered as dead line
Voltage level considered as live line
Maximum Difference in module between the line and busbar
voltage to allow a closing in the synchrocheck element.
Maximum Difference in angle between the line and busbar
voltage to allow a closing in the synchrocheck element.
Maximum difference in frequency (slip) between both voltage
values to be compared in the synchrocheck element.
Estimated breaker Closing time, used for establishing the
Closing order in a moment that allows the busbar and line
voltages to be in phase.
F650 Digital Bay Controller
5.5 CONTROL ELEMENTS
STEP RANGE
N/A [DISABLED – ENABLED]
0.01 V [0.00 : 300.00]
0.01 V [0.00 : 300.00]
0.01 V [0.00 : 300.00]
0.01 V [0.00 : 300.00]
0.01 V [2.00 : 300.00]
0.1 Deg [2.0 : 80.0]
10 mHz [10 : 5000]
0.01 s [0.01 : 600.00]
N/A [DISABLED – ENABLED]
N/A [DISABLED – ENABLED]
N/A [DISABLED – ENABLED]
N/A [DISABLED – ENABLED]
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