8–96 850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
AUTORECLOSE CHAPTER 8: CONTROL
FUNCTION
Range: Disabled, Enabled
Default: Disabled
SIGNAL INPUT
Range: dependant upon the order code
Default: CT Bank 1-J1
This setting provides the selection for three-phase current input used for deriving the
phase and neutral currents.
PHASE CURRENT PICKUP
Range: 0.050 to 30.000 x CT in steps of 0.001 x CT
Default: 1.000 x CT
The setpoint specifies phase fault current level, which when exceeded, signifies a
downstream fault.
FAST PATH:
These currents may be quite low for an end fault on a long feeder with a weak source.
NEUTRAL CURRENT PICKUP
Range: 0.050 to 30.000 x CT in steps of 0.001 x CT
Default: 0.300 x CT
The setpoint specifies neutral fault current level, which when exceeded, signifies a
downstream fault.
PICKUP TIME
Range: 0.000 to 6000.000 s in steps of 0.001 s
Default: 0.020 s
If the (phase or neutral) fault current exists for more than the Coordination Pickup Time
scheme, an increase in fault current magnitude is declared.
DROPOUT TIME
Range: 0.000 to 6000.000 s in steps of 0.001 s
Default: 0.020 s
If the (phase or neutral) fault current drops, the downstream Reclose opening is declared
for the duration of Coordination Dropout Time.
EVENTS
Range: Disabled, Enabled
Default: Enabled
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