GE D90 Plus Instruction Manual page 158

GROUPED PROTECTION ELEMENTS
150
Line End Open Pickup Delay
Range: 0.000 to 65.535 seconds in steps of 0.001
Default: 0.150 seconds
This setting specifies the time during which the line is de-energized before the line
pickup logic is armed.
Line End Open Reset Delay
Range: 0.000 to 65.535 seconds in steps of 0.001
Default: 0.090 seconds
This setting specifies the time during which the line pickup logic remains armed once the
line has been re-energized.
Overvoltage Pickup Delay
Range: 0.000 to 65.535 seconds in steps of 0.001
Default: 0.040 seconds
This setting specifies the time during which the line pickup logic remains armed once the
line voltage has returned to normal.
Autoreclose Coordination Bypass
Range: Enabled, Disabled
Default: Enabled
The coordination timer allows the overcurrent detector to be set below the expected
load current seen after reclose. When this setting is enabled (the default value), the
coordination timer is bypassed. This setting should be disabled (removing the bypass
and inserting the timer) if high speed autoreclosure is employed.
Autoreclose Coordination Pickup Delay
Range: 0.000 to 65.535 seconds in steps of 0.001
Default: 0.045 seconds
If the setting of the overcurrent detector is less than the load current, then it will pickup
during a normal re-energization of the line. This setting delays the assertion of the
operand, allowing the recovery of the line voltage to block the scheme.
PICKUP OP
Autoreclose Coordination Reset Delay
Range: 0.000 to 65.535 seconds in steps of 0.001
Default: 0.005 seconds
This setting extends the assertion of the line pickup output when autoreclose
coordination is not bypassed.
Terminal Open
Range: any FlexLogic™ operand
Default: OFF
This setting allows the line pickup element to be armed from a status signal (such as
breaker position) rather than from current and voltage. The FlexLogic™ operand
assigned to this setting indicates that the terminal is opened. It may be derived by
combining the status of several devices in a FlexLogic™ equation.
Autoreclose Accelerate
Range: any FlexLogic™ operand
Default: OFF
This setting provides zone 1 extension functionality if external autoreclosure is
employed.
PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 7: PROTECTION
LINE