6F2S1915 (0.46)
GRZ200 (Soft 031 & 032)
- 229 -
2.10.5
Operation timing
The OCCBF and EFCBF elements can check that the target CB has opened normally and that
the fault current has disappeared completely. Because load current is usually present, the
OCCBF and EFCBF settings should be account for between 10% and 200% of the rated current.
The time settings [
TCBF1-RE
] and [
TCBF1-TP
] are determined in relation to the opening
time of the target CB and the reset time of the OCCBF or EFCBF elements (see Toc and Tcb
in Figure 2.10-1). The following description illustrates a setting calculation example when “re-
trip” is used:
Setting of TCBF-RE
=Breaker opening time + OCCBF/EFCBF reset time + Margin
=40ms + 10ms + 20ms
=70ms
Setting of TCBF-TP
=TCBF-RE + Output relay operating time + Breaker opening time +
OCCBF/EFCBF reset time + Margin
=70ms + 10ms + 40ms + 10ms + 10ms
=140ms
Содержание GR 200 Series
Страница 1047: ...6F2S1915 0 46 GRZ200 Soft 031 032 1026 Figure 8 3 4 Screen shot from GR TIEMS ...
Страница 1354: ...6F2S1915 0 46 GRZ200 Soft 031 032 1333 Appendix 1 Signal list for common function ...
Страница 1369: ...6F2S1915 0 46 GRZ200 Soft 031 032 1348 Unit mm Panel cut out for 1 2 case size Figure 2 2 3 Panel cutout figure 1 2 size case ...
Страница 1410: ...6F2S1915 0 46 GRZ200 Soft 031 032 1389 This page is intentionally blank ...
Страница 1480: ...6F2S1915 0 46 GRZ200 Soft 031 032 1459 Appendix 6 Ordering ...
Страница 1497: ...6F2S1915 0 46 GRZ200 Soft 031 032 1476 Appendix 7 Technical data ...
Страница 1518: ...6F2S1915 0 46 GRZ200 Soft 031 032 1497 Appendix 8 Manufacture setting ...
Страница 1520: ...6F2S1915 0 46 GRZ200 Soft 031 032 1499 Appendix 9 Matrix between VCT terminals and relay applications ...
Страница 1523: ...6F2S1915 0 46 GRZ200 Soft 031 032 1502 Appendix 10 CT requirement ...
Страница 1531: ...6F2S1915 0 46 GRZ200 Soft 031 032 1510 Appendix 12 Engineering exercise ...
Страница 1563: ......