S&C IntelliRupter PulseCloser Manual page 63

Protection Setup
Phase Overcurrent
The Phase Overcurrent element trips the IntelliRupter fault interrupter when current
on one or more phases exceeds the pickup value for the time value set by the Inverse
Curve or Definite Time settings.
Phase Check box—Select to configure this element.
Inverse Segment—Select from the drop-down list of inverse curve names or select the
None option. When the None option is selected, only the Definite Time settings will
be used.
Min. Trip—This is the current (in primary amperes) at which the inverse curve begins
timing. (Range: 6-16,000; Step: 1) The stated maximum is for 15-kV IntelliRupter fault
interrupters; 27-kV and 38-kV are limited to 12,500 amps maximum.
Min. Time—This is the time (in seconds) defining the fastest response of the inverse
curve portion of the TCC curve. (Range: 0.000-100.000; Step: 0.001)
Time Mult—This is the time modifier for the inverse curve. (Range: 0.01-15.00; Step: 0.01)
Time Adder—This is the time modifier for the inverse curve. (Range: -10.000-100.000;
Step: 0.001)
Low Cutoff—This is the current (in primary amperes) at which the TCC curve begins
timing. This value must be equal to or greater than the lowest pickup value of the inverse
curve, the Definite Time 1 element, and the Definite Time 2 element. (Range: 6-16,000;
Step: 1) The stated maximum is for 15-kV IntelliRupter fault interrupters; 27-kV and 38-kV
are limited to 12,500 amps maximum.
Reset—Select the reset method for the inverse curve from the drop-down list:
D/T (Definite Time) or E/M (Electromechanical) mode.
Reset Time—If the Definite Time reset mode is selected, enter the time delay for the
reset (in seconds). (Range: 0.000-600.000; Step: 0.001)
Definite Time 1 Min. Trip—This is the current (in primary amperes) at which the
Definite Time 1 element picks up. (Range: 6-16,000; Step: 1) The stated maximum is
for 15-kV IntelliRupter fault interrupters; 27-kV and 38-kV are limited to 12,500 amps
maximum.
Definite Time 1 Min. Time—This is the time delay (in seconds) after which the Definite
Time 1 element trips. (Range: 0.000-600.000; Step: 0.001)
Definite Time 2 Min. Trip—This is the current (in primary amperes) at which the
Definite Time 2 element picks up. (Range: 6-16,000; Step: 1) The stated maximum is
for 15-kV IntelliRupter fault interrupters; 27-kV and 38-kV are limited to 12,500 amps
maximum.
Definite Time 2 Min. Time—This is the time delay (in seconds) after which the Definite
Time 2 element trips. (Range: 0.000-600.000; Step: 0.001)
S&C Instruction Sheet 766-530 63