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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)

Sensitive Earth

The

Sensitive Earth

element trips the IntelliRupter fault interrupter if the computed

residual of the three-phase elements exceeds the pickup value for the time value set by
the inverse curve or the definite time delay.

Sensitive Earth Check box—

Check to enable this element.

Inverse Segment—

Select from the drop-down list of inverse curve names or select the

None

option. Only the

Definite Time

settings will be used when the

None

option is

selected.

Min. Trip—

This is the current (in primary amperes) at which the inverse curve begins

timing. (Range: 3-16,000; 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: 1.000-6000.000; 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. (Range: 3-16,000; 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—

The reset for the inverse curve is configurable for either the

D/T

(Definite Time) or

the

T/A

(Time Accumulation) mode. The Time Accumulation method times when current

is above the

Minimum Trip

value, and it holds the time value when current is below the

Minimum Trip

value. The timer continues to count until either the

SEF

element trips

or the element does not pick up for the duration of the user-specified SEF Element Reset
Time parameter and the element resets. The Time Accumulation method is the default.

Reset Time—

When the

Definite Time

reset mode is selected, enter the reset delay time

(in seconds). (Range: 0.000-6000.000; 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: 3-16000; 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