1905   SI unit #70 is erroneous

Created: 15 Feb 2024

Status: Triage

Part: Part 7-3 (2020; Edition 2.1)

Links:

Page: 90

Clause: 8.16

Paragraph: Table 112

Issue

The listed SI unit #70 "A²t" is erroneous.
"t" stands for "time", but here a unit is required.

Proposal

Change "A²t" to "A²s" as "seconds" seems to be the appropriate time base.

Discussion Created Status
The litteral definition A²t, ord 70 exists since IEC 61850-7-3:2003.
Accroding to IEC 61850-7-1 Annex K.2.15 : Modification of an enumerated vales does not lead to compatibility issues.
Is such a litteral change to be handled as an interop tissue or should it postoponed to a future edition?


28 Feb 24 Triage
Agree.
The quantity is I²t.
The unit is A²s. 		16 Feb 24 Triage

 

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