S&C IntelliRupter PulseCloser Manual page 81

Protection Setup
Trip on Single Phase Voltage
Specify the Yes, No (Default), VS-SEF, or IntelliTeam SG option to configure this
element. The IntelliTeam SG setting causes this element to only be active when the
IntelliTeam SG system is in the Ready mode.
This is both an undervoltage and overvoltage element that uses the lowest and highest
line-to-ground RMS phase-voltage magnitude, respectively, to determine when it should
trip. The element is current-supervised and uses the highest magnitude RMS current
to determine when the element will accumulate time. When RMS current is above the
configured threshold, the Trip on Single-Phase Voltage element does not accumulate
time. This gives priority to the overcurrent elements during a high-current condition.
Single-Phase Low Voltage Threshold
This is the percentage of phase voltage below which a Three-Phase Trip operation will
occur. (Range: 5-100; Step: 1; Default: 75)
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 enabled, this setting specifies
primary current for the threshold. (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 Low Voltage Time to Trip
This is the time (in seconds) the Low-Voltage threshold must be exceeded for a Trip
operation to occur. (Range: 0.00-600.00; Step: 0.01; Default: 30.00)
Single-Phase Low Voltage Reset Time
This is the time (in seconds) voltage above the Low-Voltage threshold must be present for
the Single-Phase Voltage element to reset. (Range: 0.00-600.00; Step: 0.01; Default: 1.00)
Single-Phase High Voltage Time to Trip
This is the time (in seconds) the High-Voltage threshold must be exceeded for a Trip
operation to occur. (Range: 0.00-600.00; Step: 0.01; Default: 30.00)
Single-Phase High Voltage Reset Time
This is the time (in seconds) voltage below the High-Voltage threshold must be present for
the Single-Phase Voltage element to reset. (Range: 0.00-600.00; Step: 0.01; Default: 1.00)
S&C Instruction Sheet 766-530 81