1323   ZINV temperature measurements removed

Created: 21 Oct 2014

Status: Future Improvement

Part: Part 7-420 (2008; DER)

Links:

Page: 55

Clause: 6.4.3

Paragraph:

Category: Issue for edition 2 of this part

Issue

In LN ZINV there are in section 'Measurements' besides one electrical value only cooling and temperature entries, which are covered by a proper selection of DOs of MMET, MENV and CCGR. The result for an inverter would be a LD with ZINV and all the other mentioned LNs. By this modelling approach we would have a much more modular system with a clear separation between operative and supervisory data.

Proposal

Proposal is to remove these DOs:
1) HeatSinkTmp - use CCGR.CETmpOut instead
2) AmbAirTmp - use CCGR.EnvTmp instead.
Because these are items outside the inverter itself.
However DO EnclTmp will stay in LN ZINV as it belongs to the inverter itself.
[Decided by joint UML manager's phone conference at 2014-09-22, and agreed by F. Cleveland (lead editor of IEC 61850-7-420)]