2042   Clarify description of MMXU.TotPF

Created: 19 Jun 2026

Status: Discussion (red)

Part: Part 7-4 (2020; Edition 2.1)

Links: #1721 Power factor related data objects in LN MMXU

Page: 219 of INF

Clause: 6.10.14

Paragraph: Table 101

Issue

The existing description is "Average power factor in a three-phase circuit"

This could be interpreted as average (PF.phsA, PF.phsB PF.phsC) which is different (and reported by AvPFPhs)

It would be better to use a description aligned with the descriptions used in metering communication standards such as IEC 61968-9 and IEC 60256-6-1

Proposal

Change the description to:

Equivalent power factor for a three-phase circuit, calculated from the ratio of the total active power TotW to the total apparent power TotVA. The sign of TotPF shall be consistent with the sign of TotVAr and the PFSign setting.

Discussion Created Status
open for discussion. 07 Jul 26 Discussion (red)
change state to "accepted" 07 Jul 26 Accepted
The implementation in the UML model has spelling mistakes. 22 Jun 26 Triage
Please consider tissue #1721. This tissue is already in state "in force" , see IEC document 57/2445/INF. 20 Jun 26 Triage

 

Privacy | Contact | Disclaimer

Tissue DB v. 26.6.12.1