IEC 60051-3:2018 PDF

Scope: This part of IEC 60051 applies to direct acting indicating wattmeters and varmeters having an analogue display. NOTE For multi-function instruments, see IEC 60051-7. It also applies to: non-interchangeable accessories (as defined in 3.3 of IEC 60051-1:2016) used with wattmeters and varmeters; a combination of the instruments and the accessories provided that the adjustments have been made for the combination; direct acting indicating electrical measuring instruments whose scale marks do not correspond directly to their electrical input quantity, provided that the relationship between them is known; instruments and accessories having electronic devices in their measuring and/or auxiliary circuits. This document does not apply to; special purpose instruments which are covered by their own IEC standards; special purpose devices which are covered by their own IEC standards when they are used as accessories.

IEC 60051-3:2018 Referenced Document

IEC 60051-1:2016 Direct acting indicating analogue electrical measuring instruments and their accessories - Part 1: Definitions and general requirements common to all parts
IEC 60051-9:1988 Direct acting indicating analogue electrical measuring instruments and their accessories; part 9: recommended test methods

2018 IEC 60051-3:2018 Direct acting indicating analogue electrical measuring instruments and their accessories - Part 3: Special requirements for wattmeters and varmeters
1994 IEC 60051-3:1984/AMD1:1994 Direct acting indicating analogue electrical-measuring instruments and their accessories - Part 3: Special requirements for wattmeters and varmeters; Amendment 1
1984 IEC 60051-3:1984 Direct acting indicating analogue electrical measuring instruments and their accessories. Part 3 : Special requirements for wattmeters and varmeters