S&C IntelliRupter PulseCloser User Manual

Sensitive Earth
The Sensitive Earth element trips the IntelliRupter fault interrupter when the computed
residual of the three-phase elements exceeds the pickup value for the time value set by
the Inverse Curve or Denite Time settings.
Sensitive Earth Check box—Select to congure 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 Denite Time settings will
be used.
Min. Trip—This is the current (in primary amperes) at which the inverse curve begins
timing. (Range: 3.0-16,000.0; Step: 0.1 When the Voltage Supervised Sensitive Earth
element is selected, Range: 1.0-16,000.0; Step: 0.1) The stated maximum is for 15-kV
IntelliRupter fault interrupters; 27-kV and 38-kV models are limited to 12,500 amps
maximum.
Min. Time—This is the time (in seconds) dening the fastest response of the inverse
curve portion of the TCC curve. (Range: 1.000-6000.000; Step: 0.001)
Time Mult—This is the time multiplier for the inverse curve. (Range: 0.01-15.00;
Step: 0.01)
Time Adder—This is the time adder 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. (Range: 3.0-16,000.0; Step: 0.1) When the Voltage Supervised Sensitive Earth
element is selected. (Range: 1.0-16,000.0; Step: 0.1) The stated maximum is for 15-kV
IntelliRupter fault interrupters; 27-kV and 38-kV models are limited to 12,500 amps
maximum.
Reset—The reset method for the inverse curve is congurable for D/T (Denite Time) or
T/A (Time Accumulation) mode. The Time Accumulation Timer runs when current is
above the Minimum Trip setting and does not run when current is below the Minimum
Trip setting. The timer continues to count until either the SEF element trips or the element
does not pickup for the duration of the user-specied SEF Reset Time parameter and the
SEF element resets. The Time Accumulation mode is the default.
Reset Time—When the Denite Time reset mode is selected, enter the time delay for
the reset (in seconds). (Range: 0.000-6000.000; Step: 0.001);
Denite Time 1 Min. Trip—This is the current (in primary amperes) at which the
Denite Time 1 element picks up. (Range: 3.0-16,000.0; Step: 0.1) When the Voltage
Supervised Sensitive Earth element is selected. (Range: 1.0-16,000.0; Step: 0.1) The
stated maximum is for 15-kV IntelliRupter fault interrupters; 27-kV and 38-kV models are
limited to 12,500 amps maximum.
Denite Time 1 Min. Time—This is the time delay (in seconds) after which the Denite
Time 1 element trips. (Range: 1.000-6000.000; Step: 0.001)
Denite Time 2 Min. Trip—This is the current (in primary amperes) at which the
Denite Time 2 element picks up. (Range: 3.0-16,000.0; Step: 0.1) When the Voltage
Supervised Sensitive Earth element is selected. (Range: 1.0-16,000.0; Step: 0.1) The
stated maximum is for 15-kV IntelliRupter fault interrupters; 27-kV and 38-kV models are
limited to 12,500 amps maximum.
Denite Time 2 Min. Time—This is the time delay (in seconds) after which the Denite
Time 2 element trips. (Range: 1.000-6,000.000; Step: 0.001)
High Current Lockout
Select this check box to specify the High-Current Lockout Level setting (in primary
amperes). No testing is performed at current above this level. (Range: 6-16,000; Step: 1)
The stated maximum is for 15-kV IntelliRupter fault interrupters; 27-kV and 38-kV models
are limited to 12,500 amps maximum.
66 S&C Instruction Sheet 766-530
Protection Setup

S&C IntelliRupter PulseCloser Specifications

General

Brand	S&C
Model	IntelliRupter PulseCloser
Category	Industrial Electrical
Language	English