BS EN IEC 60051-3:2021 PDF

What is BS EN IEC 60051-3 about? BS EN IEC 60051-3 specifies direct acting indicating wattmeters and varmeters having an analogue display. BS EN IEC 60051-3 applies to:

non-interchangeable accessories 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.

NOTE: BS EN IEC 60051-3 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

Who is BS EN IEC 60051-3 for? BS EN IEC 60051-3 on special requirements for wattmeters and varmeters is beneficial for:

Electricians Electrical engineers Mechanics Mechanical engineers