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Figure 3. 50 y 50/51 IEEE Extremely Inverse
If overcurrent fault is 24xI
n
=12000 Ap, IEEE Extremely inverse curve defines a tripping value of 0.376 s
(Figure 3) for 50/51 function. It is considered that this time is too high, so when current fault reaches
24xI
n
, definite time overcurrent function will be work. 50 function tap is adjusted at 14xIn so definite time
overcurrent function will trip when current fault is higher than 14xIn (50 function does not wait to reach
24xIn)
The figure below (Figure 4), shows the tripping curve of the relay:
Figure 4. Relay tripping curve
Summary of Contents for SIL-A A Series
Page 8: ...www fanox com Rev 04 8 112 2 1 2 Case dimensions The dimensions are in mm...
Page 9: ...www fanox com Rev 04 9 112 2 1 3 Connection diagrams 2 1 3 1 Analog connections...
Page 12: ...www fanox com Rev 04 12 112 2 2 SILA with short circuitable current terminals 2 2 1 Front view...
Page 13: ...www fanox com Rev 04 13 112 2 2 2 Case dimensions The dimensions are in mm...
Page 14: ...www fanox com Rev 04 14 112 2 2 3 Connection diagrams 2 2 3 1 Analogic connections...
Page 22: ...www fanox com Rev 04 22 112 3 3 Functional diagram...
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Page 111: ...www fanox com Rev 04 111 112 11 APPENDIX NOTES...
