(a) For the
Open-Source Sectionalizing (Positive Sequence)
setpoint,
select the
Yes
setting to enable opening on loss of voltage.
(b) Configure the
Open Source Voltage Threshold
setpoint to select the
system voltage below which tripping will occur.
(c) For example, on a 120-V base, the
Positive Sequence Voltage
value will be
below the 80% threshold of 96 V when one phase drops below 48 V, or two
phases drop below 84 V, or all three phases drop below 96 V. A trip occurs
when voltage stays below the threshold for the duration of the
Open Source
Time to Trip
setpoint.
(d) The
Open Source Threshold
,
Low Source Voltage Threshold
, and the
Reset Voltage Threshold
setpoints should be matched to the
Good
Source Voltage Indication
setpoint to keep things consistent.
(e) Keep the
Good Source Time to Detect
setpoint and the
Time to Detect
Low Voltage
setpoint at the default values. See Figure 75 on page 131.
STEP 11.
Adjust the
Hot Line Tag
mode TCC curves on the
Setup>Protection>Hot Line
Tag>Current
screen. See Figure 76.
The IntelliRupter fault interrupter uses these TCC curve configurations
when placed into the
Hot Line Tag
mode by the HOT LINE TAG lever, a SCADA
command, or an IntelliLink software command.
Figure 76. The
Setup>Protection>Hot Line Tag>Current
screen.
132 S&C Instruction Sheet 766-530
Loop Restoration