S&C TripSaver II - Page 63

S&C Instruction Sheet 461-504 63
Informational and Settings Screens
Time Adder (check box). Select this check box to enable the Time Adder setting.
Time Adder, Time s. Specify a time modier (in seconds) to add a constant time delay
to the inverse curve segment. (Default: 0; minimum value: 0; maximum value: 0.25).
Max Time (check box). Select this check box to enable the Max Time setting.
See Figure 88 on page 62. 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 setting, before a protection Trip
operation occurs according to the set TCC curve.
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 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 (Inst Trip) (check box). Select this check box to enable the Denite
Time 1 element. For Instantaneous Trip mode, 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.
Definite Time 1, Time s. Specify the time delay (in seconds) after which the
Definite 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
Denite Time 1 current.
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.
Denite Time 2 Current, A. Specify the current (in primary amperes) at which the
Denite Time 2 element picks up (minimum value: 5; maximum value: 6,300). Note:
This value must be greater than the Denite Time 1 current, less than or equal to the
interrupting rating of the recloser, and smaller than the High Current Cutoff setting.
Denite Time 2 Time, s. Specify the time delay (in seconds) after which the Denite
Time 2 element trips (minimum value: 0; maximum value: 1,000). Note: This value must
be less than Denite Time 1 setting.