ČSN EN IEC 60051-3 (356203)

The category - similar standards:

Measurement of electrical and magnetic quantities

Annotation of standard text ČSN EN IEC 60051-3 (356203):

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 3.1.23 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