Under Frequency Minimum Time to Detect
This is the time (in seconds) the Threshold setpoint must be exceeded for a Loop
Restoration Close command to be blocked or IntelliTeam SG system to be set to
the Prohibit Restoration state. (Range: 0.06-600.00; Step: 0.02; Default: 1.00)
Reset Time
This is the time (in seconds) good frequency must be present for the Frequency element
to reset before the Under Frequency Minimum Time to Detect Timer expires.
(Range: 0.06-600.00; Step: 0.02; Default: 1.00) After the Under Frequency Minimum Time
to Detect Timer has expired, when frequency above the Under Frequency Threshold
setting persists for more than 5 seconds the Low-Frequency Indication state is removed.
Sectionalizing elements can be used in place of overcurrent elements when
coordination is a concern. They can also be used in systems comprised of IntelliRupter fault
interrupters and 6800 Series Automatic Switch Controls. There is no directionality
associated with the sectionalizing elements. The fault-current settings used for
counting apply to both directions. When sectionalizing is used with the IntelliTeam II or
IntelliTeam SG system, the IntelliTeam system uses the Good Source Voltage
Indication and Good Source Time to Detect settings found on the Setup>
Protection>General Prole>Voltage, Frequency, and Sectionalizing>Voltage Trip
screen to determine when the source returns. See Figure 53.
Sectionalizing Trip
Figure 53. The Setup>Protection>General Profile 1>Voltage, Frequency, and Sectionalizing>
Sectionalizing Trip screen.
Fault Current Detected – Counts to Trip
Specify the Yes, No (Default), or IT SG Only option to congure this element. When the
IT SG Only option is selected, this element is only active when the IntelliTeam SG system
is in the Ready state. A fault-current count is dened as a fault current event followed
by a three-phase voltage loss. (Range: 1-10; Step: 1; Default: 3)
86 S&C Instruction Sheet 766-530
Protection Setup
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