Schweitzer Engineering SEL-351P, Quick Start Manual

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Settings
SEL-351P Quick-Start Installation and User's Guide (Portuguese) 43
Setting Default Range Incr.
EM reset - phase delay
curve N Y/N
The EM reset - phase delay curve setting enables the electromechanical reset emulation for the US
or IEC curve, if set to Y.
•
This setting is usually set to N, except for special applications.
•
This setting is hidden and set to N if Delay curve - phase is programmed with a recloser or user
curve.
No. Setting Default Range Incr.
11 Delay curve - ground 13 OFF, U1-U5, C1-C5, recloser or
user curve
The Delay curve - ground setting selects the time-overcurrent curve for ground fast curve tripping. Curve
designations are provided in Table 6 and Table 7.
If Min. trip - ground (No. 6) is effectively set <0.1 Amp secondary (e.g., for CT ratio [No. 3] = 200.0,
Min. trip - ground [No. 6] <20.00 Amps primary), then Delay curve - ground flattens out above 1.5 Amps
secondary (e.g., for CT ratio [No. 3] = 200.0, Delay curve - ground flattens out above 300 Amps primary).
•
This setting is hidden and set to OFF if Min. trip -ground (No. 6) is set to OFF.
•
If Delay curve - ground is programmed with a US (U1-U5) or IEC (C1-C5) curve, enter the following
two settings:
Setting Default Range Incr.
Time-dial - ground delay
curve 1.00 0.50 - 15.00 for US curves U1-U5
0.05 - 1.00 for IEC curves C1-C5 0.01
0.01
The Time-dial - ground delay curve setting shifts the US or IEC curve in time by the entered
multiplier.
•
This setting is hidden and nonoperative if Delay curve - ground is programmed with a recloser
or user curve.
Setting Default Range Incr.
EM reset - ground delay
curve N Y/N
The EM reset - ground delay curve setting enables the electromechanical reset emulation for the
US or IEC curve, if set to Y.
•
This setting is usually set to N, except for special applications.
•
This setting is hidden and set to N if Delay curve - ground is programmed with a recloser or
user curve.
No. Setting Default Range Incr.
12 Time delay - SEF 0.00 0-16000.00 cycles 0.25 cyc.
The Time delay - SEF setting programs an intentional time delay for the definite-time SEF (sensitive earth
fault) overcurrent element. This is in addition to the built-in 2-cycle time delay.
•
This setting is hidden and set to zero (0) if Min. trip - SEF (No. 7) is set to OFF.