Normal State
The
Normally Open
state is for an IntelliRupter fault interrupter at the tie point between
two feeders. The
Normally Closed
state is for any other IntelliRupter fault interrupter on
the feeder. This parameter is not available when the
Loop Restoration
mode is disabled.
Protection
Choose the
Voltage Trip
or
Sectionalizing
element for triggering the
Loop-Restoration
mode. The
Voltage Trip
element is usually selected. This parameter is only available
when the
Closed Normal
state and the
Loop Restoration
mode are enabled.
Good Frequency to Close
When the
Yes
option is chosen for the
Good Frequency to Close
mode, a
Loop
Restoration Close
command will be blocked if the frequency is below the active
Under
Frequency Threshold
for the configured
Under Frequency Minimum Time to Detect
setpoint. When the
No
setting is chosen for the
Good Frequency to Close
mode, a
Loop
Restoration Close
command will not be blocked.
The
Yes
option is chosen for the
Under Frequency Enabled
setpoint on the
Setup>Protection>General Profiles>Voltage Frequency Sectionalizing>Frequency
Trip Section
screen. The
Loop Restoration
mode must be manually enabled after the
Low-Frequency
condition has cleared.
Loop Restoration Test Sequence Section
Closing Profile 1 and Closing Profile 2
The closing profile names are shown here for reference. They are configured on the
Setup>Protection>Closing Profile 1 or 2>Closing Profile 1 or 2>Current>Closing
Profile Main
screen.
Add Test and Remove Test buttons
Select the number of loop-restoration tests to be performed. At least one test is always
performed and up to four tests can be configured. Each click on the
Add Test
button
adds one test. Each click on the
Remove Test
button removes one test.
Close Option—Tests 1-4
Select the specific closing profile to be used for each test. Choose from the
Closing
Profile 1
or
Closing Profile 2
options.
Delay (seconds)—Tests 2-4
Specify the delay in seconds between each test. (Minimum: 1.80 for Time 1, 10.00 for
Time 2, and 30.00 for Time 3; Maximum: 655.00 seconds; Default: the minimum value;
Increment: 0.01)
S&C Instruction Sheet 766-530 117
Loop Restoration