Coordination Reset Time
The duration (in seconds) Sequence Coordination TCC curves remain active. Timing
begins after Sequence Coordination TCCs are no longer timing, meaning conditions are
below the
Phase
,
Ground
,
Negative Sequence
, and
SEF Min. Trip
settings. At the
expiry of the
Coordination Reset Time
Timer
, Initial Trip TCCs of the selected general
profile become active. (Range: 0-600; Step: 1)
Note:
A time value of 0 seconds should never be used when
Communication
Enhanced Coordination
mode is selected.
Enter these setpoints to configure the Coordination Reset Time.
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 models 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: 0.000-6000.000; 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. 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
models 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 models 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 models 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 69
Protection Setup