Direct acting indicating analogue electrical measuring instruments and their accessories title - Special requirements for frequency meters

Direct acting indicating analogue electrical measuring instruments and their accessories title - Special requirements for frequency meters

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1   Scope

This part of IEC 60051 applies to direct acting indicating analogue frequency meters of the following types:
  • • pointer-type frequency meters (as defined in 3.2.11 of IEC 60051‑1:2016);
  • • vibrating-reed frequency meters (as defined in 3.2.12 of IEC 60051‑1:2016).
This document also applies to non-interchangeable accessories (as defined in 3.1.23 of IEC 60051‑1:2016) used with frequency meters.