Direct acting indicating analogue electrical measuring instruments and their accessories - Part 7: Special requirements for multi-function instruments (IEC 60051-7:2017) (english version)
This part of IEC 60051 applies to multi-function analogue instruments.
This document also applies to non-interchangeable accessories (as defined in 3.1.23 of
IEC 60051-1:2016) used with multi-function analogue instruments.
ICS
17.220.20 Measurement. Including measuring instruments, instrument transformers / Измерения электрических и магнитных величин. Включая измерительные приборы, измерительные трансформаторы
