4.55
Date Code 20170814
Instruction Manual
SEL-700G Relay
Protection and Logic Functions
Group Settings (SET Command)
potential transformer fuse blows, the element is torque controlled by the
NOT LOPX Relay Word bit.
With the previous settings, the 51V element is enabled as long as there is no
loss-of-potential condition.
The Relay Word bits 51CT and 51VT are configured to shut down the
generator in the factory-default logic (see Trip/Close Logic Settings for
details). You must change the setting if your application requires a different
action.
Figure 4.28
Voltage-Controlled Phase Time-Overcurrent Element 51CT
Figure 4.29
Voltage-Restrained Phase Time-Overcurrent Element 51VT
51VTC
NOT LOPX
:=
51CP
|I
P
|
Setting
51CTC
Torque Control Switch
SEL
OGIC
Torque Control
51C Pickup
51CR Reset
51CT Curve
Timeout
51CTC
Torque Control
State Switch
Position
Logical 1
Closed
Logical 0
Open
Setting
51CRS =
Reset Timing
Y
Electromechanical
N
1
Cycle
Relay
Word
Bits
SEL
OGIC
Setting
(max. phase)
51CT Phase
Time-Overcurrent Element
Curve Timing and Reset Timing
Settings
51CP Pickup
51CC Curve Type
51CTD Time Dial
51CRS Electromechanical
Reset? (Y/N)
V
P
(associated
phase)
VNOM_X
Setting
51VP
|I
P
|
Setting
51VTC
Torque Control Switch
SEL
OGIC
Torque Control
51V Pickup
51VR Reset
51VT Curve
Timeout
51VTC
Torque Control
State Switch
Position
Logical 1
Closed
Logical 0
Open
Setting
51VRS =
Reset Timing
Y
Electromechanical
N
1
Cycle
Relay
Word
Bits
SEL
OGIC
Setting
(max. phase)
51VT Phase
Time-Overcurrent Element
Curve Timing and Reset Timing
Settings
51VP Pickup
51VC Curve Type
51VTD Time Dial
51VRS Electromechanical
Reset? (Y/N)
Summary of Contents for SEL-700G Series
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