IEC 60051-1:1997 pdf download – Direct acting indicating analogue electricalmeasuring instruments and their accessories -Part 1: Definitions and general requirements common to all parts

IEC 60051-1:1997 pdf download – Direct acting indicating analogue electricalmeasuring instruments and their accessories -Part 1: Definitions and general requirements common to all parts.
— ammeters and voltmeters;
— wattmeters and varmeters;
— frequency meters of pointer and vibrating-reed types;
— phasemeters, power-factor meters and synchroscopes;
– ohmmeters, impedance meters and conductance meters;
— multi-function instruments of the above types.
It also applies to certain accessories used with these instruments, such as:
— shunts:
— series resistors and impedance elements.
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 andlor 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 accessories.
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 lEG 6D068.
This standard does not specify requirements concerning dimensions of instruments or accessories (for the former, see IEC 60473).
1.2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of IEC 60051 At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this part of IEC 60051 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below, Members of IEC and ISO maintain registers of currently valid International Standards.
IEC 60027: Letter symbols to be used In electrical technology
IEC 60050(301), (302), (303):1983, International Eleclrot.chnical Vocabulary (1EV) — Chapter 301: General terms on measurements in electricity — Chapter 302: Electrical measuring instruments — Chapter 303: Electronic measuring instruments
IEC 60051-9:1968, Direct acting indicating analogue electrical measuring instruments and their accessories — Pad 9: Recommended lest methods
IEC 60068-2-6:1995, Environmental tests — Part 2: Tests — Test Fc and guidance: Vibrations (sinusoidal)
IEC 60068-2-27:1987, Environmental testing — Part 2: Tests — Test Ea and guidance: Shock
IEC 60417:1973, Graphical symbols for use on equipment — Index, survey and compilation of the single sheets
IEC 60473:1974. Dimensions for panel-mounted indicating and recording electrical measuring instruments’
IEC 60617.2:1996. Graphical symbols for diagrams — Pad 2: Symbol elements, qualifying symbols arid other symbols having general application
IEC 61010-1:1990. Safety requirements for electrical equipment for measurement, control, and laboratory use — Part 1: General requirements
2 DefinitIons
The values of ac. quantities, given in this standard, are r.m.s. values unless otherwise stated.
For the purpose of this standard, terms as defined In IEC 60050 apply. together with the following additional terms,
2.1 General terms
2.1.1
electrical measuring instrument
a measuring instrument Intended to measure an electrical or non-electrical quantity using electrical means.