GE Power Management
750/760 Feeder Management Relay 14-
9
14 S7 CONTROL 14.3 MANUAL CLOSE BLOCKING
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14.3 MANUAL CLOSE BLOCKING 14.3.1 DESCRIPTION & SETPOINTS
The 750/760 can be programmed to block instantaneous overcurrent elements and raise the pickup level of
time overcurrent elements when a manual breaker close is performed. This prevents optimally set overcurrent
elements from erroneously operating on startup due to inrush currents.
■ MANUAL CLOSE
■ [ENTER] for more
The Manual Close Blocking setpoints path is:
\ SETPOINTS \ S7 CONTROL \ MANUAL CLOSE
MANUAL CLOSE
FUNCTION: Disabled
Range: Disabled, Alarm, Latched Alarm, Control
Select the required function.
MANUAL CLOSE
RELAYS (3-7):
Range: Any Combination of the 3-7 AUXILIARY Relays
Select the output relays required.
MANUAL CLOSE BLOCK
TIME: 5 s
Range: 1 to 1000 in steps of 1 s
Enter the period of time following a manual close for which overcurrent ele-
ments will be blocked or will have their pickup levels raised.
PHASE INST OC 1
BLOCKING: Disabled
Range: Disabled, Enabled
Enable to block Phase Instantaneous O/C 1 element while manual close blocking is in effect.
NEUTRAL INST OC 1
BLOCKING: Disabled
Range: Disabled, Enabled
Enable to block Neutral Instantaneous O/C 1 element while manual close blocking is in effect.
GROUND INST OC 1
BLOCKING: Disabled
Range: Disabled, Enabled
Enable to block Ground Instantaneous O/C element while manual close blocking is in effect.
SENSTV GND INST OC
BLOCKING: Disabled
Range: Disabled, Enabled
Enable to block Sensitive Ground Instantaneous O/C while manual close blocking is in effect.
NEG SEQ INST OC
BLOCKING: Disabled
Range: Disabled, Enabled
Enable to block Negative Sequence Instantaneous O/C while manual close blocking in effect.
PHASE TIME OC 1
RAISED PICKUP: 0%
Range: 0 to 100 in steps of 1%
Enter the amount to raise pickup level for the Phase Time O/C 1 element while
manual close blocking is in effect.
NEUTRAL TIME OC 1
RAISED PICKUP: 0%
Range: 0 to 100 in steps of 1%
Selects the amount to raise the pickup level for the Neutral Time O/C 1 element
while manual close blocking is in effect.
GROUND TIME OC
RAISED PICKUP: 0%
Range: 0 to 100 in steps of 1%
Selects the amount to raise the pickup level for the Ground Time O/C element
while manual close blocking is in effect.
SENSTV GND TIME OC
RAISED PICKUP: 0%
Range: 0 to 100 in steps of 1%
Selects the amount to raise the pickup level for the Sensitive Ground Time O/C
element while manual close blocking is in effect.
NEG SEQ TIME OC
RAISED PICKUP: 0%
Range: 0 to 100 in steps of 1%
Selects the amount to raise the pickup level for the Negative Sequence Time O/
C element while manual close blocking is in effect.
SELECT SETPOINT
GROUP: Active Group
Range: Group 1, Group 2, Group 3, Group 4, Active Group
Select the setpoint group to be used while manual close blocking is in effect. If
Active Group
is selected, then the active setpoint group is not affected.
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