Trip on Three Phase Voltage
Specify the Yes, No (Default), or IntelliTeam SG setting to congure this element. The
IntelliTeam SG mode will cause 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) setting.
Threshold Current
If the Current Supervised on Low Voltage mode is specied, specify the value of
primary current. (Range: 10-16,000; Step: 1; Default: 800) The stated maximum is for
15-kV IntelliRupter fault interrupters; 27-kV and 38-kV 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: 0.00-600.00; Step: 0.01; Default: 30.00)
Three Phase Reset Time
This is the time (in seconds) voltage must be present for the Three-Phase Voltage
element to reset. (Range: 0.00-600.00; Step: 0.01; Default: 1.00)
Frequency Trip Section
Each Closing Prole has settings for multiple Frequency Trip elements.
Under Frequency Enabled
Specify the Yes or No (default) setting.
Under Frequency Threshold
This is the frequency (in hertz) below which a Trip operation will occur. Enter between
47 and 60 Hz, but the setting will be valid only if it falls within the range (System
Frequency - 3, System Frequency). (Minimum: System Frequency - 3 Hz; Maximum:
System Frequency; Default: System Frequency - 0.5 Hz; Increment: 0.01)
Over Frequency Enabled
Specify the Yes or No (default) setting.
S&C Instruction Sheet 766-530 107
Protection Setup
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