S&C TripSaver II - Page 64

64 S&C Instruction Sheet 461-504
Informational and Settings Screens
For Definite Time
If the DeniteTime setting is selected from the same Inverse Segment selection
menu, additional elds will open, described below. See Figure 89. Note: When the
DeniteTime setting is selected, the test operation can be copied to the clipboard or
saved to a setpoint le.
Figure 89. The additional fields when DefiniteTime is selected under Inverse Segment.
Figure 90. The DefiniteTime Reset Time setting field for E/M Reset Type.
Current, A. Specify the current (in primary amperes) at which the DeniteTime setting
begins timing (minimum value: 5; maximum value: 400). This eld is mandatory.
Time, s. Specify the time delay (in seconds) after which the DeniteTime setting trips
(minimum value: 0; maximum value: 1,000). This eld is mandatory.
Reset Type. Select the reset method for the DeniteTime setting from the drop-down
list: “D/T” (Denite Time) or “E/M” (Electromechanical). (This not to be confused with
the O/C Sequence Time setting. “Reset” here means how fast that curve will reset if it
has picked up but fault disappears before the TripSaver II recloser could trip.) This eld
is mandatory.
Reset Time, s. Specify the time delay (in seconds) before DeniteTime setting resets
under “D/T reset type” (minimum value: 0; maximum value: 1,000). This eld is mandatory.
Reset Time, s (I0A). When the Reset Type setting is “E/M”, the title of the Reset
Time eld will be changed to “Reset Time, s (I0A)”. The value specied here is the time
delay (in seconds) before the DeniteTime element resets when load current owing
is at 0 A (minimum value: 0; maximum value: 1,000). The actual reset time used by the
electromechanical reset will be calculated using the following quadratic algorithm: the
value in this eld/(the load current / the current entered)^2 - 1). This eld is mandatory.
See Figure 90.