BS EN IEC 60051-5:2018

This standard BS EN IEC 60051-5:2018 Direct acting indicating analogue electrical measuring instruments and their accessories is classified in these ICS categories:

• 17.220.20 Measurement of electrical and magnetic quantities

This part of IEC 60051 applies to direct acting indicating phase meters, power factor meters and synchroscopes having an analogue display.

This document also applies to non-interchangeable accessories (as defined in 3.1.23 of IEC 60051‑1:2016 ) used with phase meters, power factor meters and synchroscopes.

This document also applies to a phase meter or power factor meter whose scale marks do not correspond directly to its electrical input quantity, provided that the relationship between them is known.