1373 More coils in SCBR
- Created
- 22 Apr 2015
- Status
- Future ImprovementClosed for this edition: a valid suggestion, kept for a future one. No further comments are taken. Show the workflow
- Part
- Part 7-4 (2010; Edition 2)
- Links
- None
- Page
- 88
- Clause
- 5.14
- Paragraph
- 5.14.3
- Category
- Issue for edition 3 of this part
Issue
Breaker usually have 2 or 3 coils: 1 for closing, 1 or 2 for opening. Coil circuits powered from different sources and protected by different fuses or automatic breakers: usually circuit 1 - close and first open, circuit 2 - second (backup) open. Thus increases reliability.
In SCBR presented only 1 DO ColOpn and ColA and no any settings of coils.
Proposal
Need more DOs for coils supervision (all optional):
ColOpn1 SPS
ColOpn2 SPS
ColOpn3 SPS
ColAlm1 SPS
ColAlm2 SPS
ColAlm3 SPS
ColNomA ASG (nominal coil current, A)
ColOpTmms ING (time delay to trip coil, ms)
| Discussion | Created |
|---|---|
| Future Improvement Change to status on hold, because it will be implemented in the next version/edition of this part. | 16 Jul 15 |
|
Discussion (red)
Since it is proposed to handle this tissue through IEC 61850-90-3, it will have an impact on part 7-4 ed.3.
The topic could also be discussed in TR IEC 61850-7-500. |
28 Apr 15 |
| Discussion (red) I think this should be handled through IEC 61850-90-3. But I agree that we Need more than one coil supervision unless we declare the SCBR to belong to one coil only. | 27 Apr 15 |