1592   Power frequency evaluation using EN50160 is done over a week

Created: 14 Jul 2017

Status: Not Applicable

Part: Part 90-17 (2017; Ed1, Power Quality Data)

Links:

Page: 24

Clause: 5.9.3

Paragraph:

Category: Issue for edition 2 of this part

Issue

Stated is:

"50 Hz ± 1 % (i.e. 49,5 Hz to 50,5 Hz) during 99,5 % of a year; (0,5 % of a year = 43,8 h)"

However the EN50160 spec mentions this limit as being required for a week.

Proposal

Change the mentioned line to show that measurands should stay within this limit for a week.