6F2S1915 (0.46)
GRZ200 (Soft 031 & 032)
- 1504 -
50%.
2.
In cases where CTs are specified as P-class protective current transformers
according to IEC 60044-1 (e.g. 5P10, 5P20 etc.), the knee point voltage can be
approximated as follows:
Vk 0.8 × n × In × (Rct + RVA)
where,
Vk: Knee point voltage.
In:
Rated current at secondary CT.
Rct: Resistance of CT.
RVA: Rated burden.
n:
Accuracy limiting factor of CT (e.g. 20 for 5P20)
(All values refer to the CT secondary side)
3.
Remanent flux has not been considered. In cases where a high level of remanent
flux may be experienced, it may be necessary to include an additional margin
when dimensioning the CT.
4.
The data provided is valid for 50Hz and 60Hz power systems.
Summary of Contents for GR 200 Series
Page 1047: ...6F2S1915 0 46 GRZ200 Soft 031 032 1026 Figure 8 3 4 Screen shot from GR TIEMS ...
Page 1354: ...6F2S1915 0 46 GRZ200 Soft 031 032 1333 Appendix 1 Signal list for common function ...
Page 1410: ...6F2S1915 0 46 GRZ200 Soft 031 032 1389 This page is intentionally blank ...
Page 1480: ...6F2S1915 0 46 GRZ200 Soft 031 032 1459 Appendix 6 Ordering ...
Page 1497: ...6F2S1915 0 46 GRZ200 Soft 031 032 1476 Appendix 7 Technical data ...
Page 1518: ...6F2S1915 0 46 GRZ200 Soft 031 032 1497 Appendix 8 Manufacture setting ...
Page 1523: ...6F2S1915 0 46 GRZ200 Soft 031 032 1502 Appendix 10 CT requirement ...
Page 1531: ...6F2S1915 0 46 GRZ200 Soft 031 032 1510 Appendix 12 Engineering exercise ...
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