Abstract： IEC 60051-1:1997 pdf free download.Direct acting indicating analogue electrical measuring instruments and their accessories - Part 1:Definitions and general requirements common to all parts. If other accessories are associated with instrume...

IEC 60051-1:1997 pdf free download.Direct acting indicating analogue electrical measuring instruments and their accessories -

Part 1:Definitions and general requirements common to all parts.

If other accessories are associated with instruments, this standard is applicable to the combination of the instrument and the

accessory provided that the adjustments have been made for the combination.

This standard also applies to a direct acting indicating electrical measuring instrument whose scale marks do not correspond

directly to its electrical input quantity, provided that the relationship between them is known,

This standard also applies to instruments and accessories having electronic devices in their measuring and/or auxiliary circuits.

This standard does not apply to special purpose instruments which are covered by their own IEC standards.

This standard does not apply to special purpose devices which are covered by their own IEC standards when they are used as

accessorees

This standard does not contain either requirements for protection against environmental conditions or the relevant tests. However, when necessary, and then only by agreement between the manufacturer and the user, tests to approximate the conditions of use may

be selected from IEC 60068.

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