S&C TripSaver II - Page 68

68 S&C Instruction Sheet 461-504
Informational and Settings Screens
Max Time (check box). Select this check box to enable the Max Time setting. The Max
Time setting enables the setting of a maximum time duration of the current before a trip
will occur. This is helpful when TCC curves are designed where the load or fault must be
sustained for long durations (seconds or minutes) when the current magnitude is near
the minimum trip threshold, before a protection Trip operation occurs according to the
set TCC curve. When the Max Time setting is applied and a fault event occurs, either
the Max Time setting or the Time-Current Characteristic curve will cause the recloser
to trip, whichever is fastest.
Max Time, Time, s. Specify a maximum time (in seconds) to trip prior to inverse
curve segment expiration. (Default: Disabled; minimum value: 0.2; maximum value: 180).
Low Current Cutoff (check box). Select this check box to enable low-current cutoff.
Low Current Cutoff, Current, A. Specify the current (in primary amperes) below which
the inverse curve segment is truncated. The Low Cutoff Current setting will then be
the actual minimum trip current (minimum value: 5; maximum value: 600). Note: This
value must be greater than the minimum trip current of the inverse curve segment and
smaller than the High Current Cutoff setting.
Denite Time 1 (I nst T r i p) (check box). Select this check box to enable the Denite
Time 1 element. For Instantaneous Trip, the settings depend on the emulated device,
and the Minimum Trip, Coil Rating, or Ampere rating, depending on the emulated device
(microprocessor recloser, hydraulic recloser, or fuse respectively) and the setting is
listed in the yover text. Note: The Denite Time 1 element must be enabled before the
Denite Time 2 element can be enabled. If the Denite Time 1 element is deselected,
the Denite Time 2 element is deselected automatically.
Denite Time 1 Current, A. Specify the current (in primary amperes) at which the
Denite Time 1 element picks up (minimum value: 5; maximum value: 6300). Note:
This value must be greater than the Minimum Trip current, greater than the Low Current
Cutoff current, less than or equal to the interrupting rating of the recloser, and smaller
than the High Current Cutoff setting.
Denite Time 1, Time, s. Specify the time delay (in seconds) after which Denite Time
1 element trips (minimum value: 0; maximum value: 1000). Note: This value must be less
than or equal to time on inverse curve segment at the Denite Time 1 Current setting.
Denite Time 2 (check box). Select this check box to enable the Denite Time 2
element. Note: This check box is not active unless the Denite Time 1 element is
enabled.
Definite Time 2 Current, A. Specify the current (in primary amperes) at which
the Definite Time 2 element picks up (minimum value: 5; maximum value: 6,300).
Note: This value must be greater than the Definite Time 1 Current setting, less than
or equal to the interrupting rating of the recloser, and smaller than the High Current
Cutoff setting.
Definite Time 2 Time, s. Specify the time delay (in seconds) after which the Definite
Time 2 element trips (minimum value: 0; maximum value: 1,000). Note: This value
must be less than Definite Time 1 setting.