Figure 79. The
Setup>Restoration>Loop
screen.
Follow these steps to configure the
Loop Restoration
mode for a normally closed feeder
configuration:
STEP 1.
On the
Setup> Restoration>Loop
screen, enable the
Enable Loop Restoration
setpoint for the desired General Profile. See Figure 79.
STEP 2.
Select the direction(s) that will use
Loop Restoration
mode. Configure the
Direction
setpoint on the
Setup>Restoration>Loop
screen.
STEP 3.
Select the
Closed
state for the
Normal State
setpoint on the
Setup>
Restoration>Loop
screen.
When
Loop Restoration
mode is making a decision to close and restore the feeder,
it uses the profile and test sequence programmed at the
Setup>Restoration>Loop>Loop
Restoration Test Sequence
screen. See Figure 79.
If the IntelliRupter fault interrupter tripped open for the
Voltage Trip
element and
then voltage returns to either side for the configured
Time Delay Before First Test
setpoint, and the IntelliRupter fault interrupter is in the
Loop Restoration
mode
Ready
state, it will close.
Normally closed loop devices do not use the
Time Delay Before First Test
setpoint.
They decide when to close based on the
Good Source Voltage Indication
setpoint,
configured in Step 10 on page 131.
Note:
Voltage must also be below the
Backfeed Voltage Level
setpoint on one
side for
Loop Restoration
mode to close. This setpoint is on the Setup>
General>
Site-Related>System
screen. The default value is 10%. See Figure 6 on page 19. If
voltage goes above the
Backfeed Voltage Level
setpoint while timing on the
Time Delay Before First Test
setpoint, this timer is reset.
Normally Closed
Configuration
S&C Instruction Sheet 766-530 135
Loop Restoration