Single Phase High Voltage Threshold
This is the percentage of phase voltage above which a
Three-Phase Trip
operation will
occur. (Range: 100-200; Step: 1; Default: 120)
Current Supervised on Low Voltage
Specify the
Yes
or
No
(default) option.
Threshold Current
When the
Current Supervised on Low Voltage
mode is selected, specify the primary
current value. (Range: 10-16,000; Step: 1; Default: 800) The stated maximum is for
15-kV IntelliRupter fault interrupters; 27-kV and 38-kV models are limited to 12,500 amps
maximum.
Single Phase Time to Trip
This is the time (in seconds) the
Low-Voltage
or
High-Voltage Threshold
setting must
be exceeded for a
Trip
operation to occur. (Range: 0-600; Step: 0.01; Default: 30.00)
Single Phase Reset Time
This is the time (in seconds) good voltage must be present for the
Single-Phase Voltage
element to reset. (Range: 0-600; Step: 0.01; Default: 1.00)
Trip on Three Phase Voltage
Specify the
Yes
,
No
(Default), or
IntelliTeam SG
option to enable this element. The
IntelliTeam SG
setting causes this element to only be active when the IntelliTeam SG
system is in the
Ready
state.
Three Phase Low Voltage Threshold
This is the percentage of system voltage below which a
Three-Phase Trip
operation
will occur. (Range: 5-100; Step: 1; Default: 75)
Three Phase High Voltage Threshold
This is the percentage of system voltage above which a
Three-Phase Trip
operation
will occur. (Range: 100-200; Step: 1; Default: 120)
Current Supervised on Low Voltage
Specify the
Yes
or
No
(default) option.
Threshold Current
When the
Current Supervised on Low Voltage
mode is selected, specify the primary
current value. (Range: 10-16,000; Step: 1; Default: 800) The stated maximum is for
15-kV IntelliRupter fault interrupters; 27-kV and 38-kV models are limited to 12,500 amps
maximum.
Three Phase Time to Trip
This is the time (in seconds) the
Low-Voltage
or
High-Voltage Threshold
setting must
be exceeded for a
Trip
operation to occur. (Range: 0-600; Step: 0.01; Default: 30.00)
Three Phase Reset Time
This is the time (in seconds) good voltage must be present for a
Three-Phase Voltage
element to reset. (Range: 0-600; Step: 0.01; Default: 1.00)
S&C Instruction Sheet 766-530 95
Protection Setup