GE F650 Instruction Manual page 242
Digital bay controller
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5 SETTINGS
Table 5–79: SYNCHRONISM CONDITIONS
SYNCHRONISM SITUATION SYNCHRONISM
CHECK
(1) V
< (V
& V
)< V
Not permitted
L
1
2
H
(2) (V
& V
) > V
Permitted
1
2
H
(3) (V
& V
) < V
Not permitted
1
2
L
(4) (V
< V
) & (V
< V
< V
)
Not permitted
1
L
L
2
H
(5) (V
< V
) & (V
< V
< V
) Not permitted
2
L
L
1
H
(6) (V
< V
) & (V
> V
)
Not permitted
1
L
2
H
(7) (V
< V
) & (V
> V
)
Not permitted
2
L
1
H
Table 5–79: shows the different synchrocheck and closing logic situations, that can be produced depending on the line and
busbar voltage levels.
Live Line – Live Bus (Synchronism check): Only in case number (2), with live line and live bus, the element will start
Dead Line – Dead Bus (DL - DB): Case number (3) will not allow the synchronism function, but it will allow DL-DB
Dead Line – Live Bus (DL - LB):
Live Line – Dead Bus (LL - DB):
Case numbers (1), (4) and (5) are not considered neither for synchronism check purposes, nor for closing logic.
GEK-106310AB
CLOSING LOGIC
Not permitted
Live Line – Live Bus
Dead Line – Dead Bus
Not permitted
Not permitted
Dead Line – Live Bus
Live Line – Dead Bus
evaluating the line and busbar voltage comparison with respect to the setting ΔV
established by setting (Max Volt Difference). In this case, if the voltage difference is
lower than ΔV
, the synchronism check element (25) will verify the angle difference
set
Δϕ adjusted by setting (Max Angle Difference).
operation logic, if this logic is enabled by setting (DL-DB Function).
Case number (6) will not allow the synchronism function, but it will allow DL-LB
Operation logic, if this logic is enabled by setting (DL-LB Function)
Case number (7) will not allow the synchronism function, but it will allow LL-DB
operation logic, if this logic is enabled by setting (LL-DB Function)
F650 Digital Bay Controller
5.5 CONTROL ELEMENTS
LINE VOLTAGE
BUSBAR VOLTAGE
LEVELS
LEVELS
V1 > dead line level
V2 > dead bus level
V1 < live line level
V2 < live bus level
V1 > live line level
V2 > live bus level
V1 < dead line level
V2 < dead bus level
V1 < dead line level
V2 > dead bus level
V2 < live bus level
V1 > dead line level
V2 < dead bus level
V1 < live line level
V1 < dead line level
V2 > live bus level
V1 > live line level
V2 < dead bus level
set
5
5-95
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