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BS EN IEC 60051-2:2021

BS EN IEC 60051-2:2021

$142.49

Direct acting indicating analogue electrical measuring instruments and their accessories – Special requirements for ammeters and voltmeters

Published By Publication Date Number of Pages
BSI 2021 24
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IEC 60051-2:2018 applies to direct acting indicating ammeters and voltmeters having an analogue display. It also applies to: •    direct acting indicating ammeters and voltmeters whose scale marks do not correspond directly to their electrical input quantity, provided that the relationship between them is known; •    direct acting indicating ammeters and voltmeters 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 60051-2:2018 cancels and replaces the fourth edition published in 1984. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a)    updating of content in line with new editions of IEC 60051-1 and IEC 60051-9; b)    addition of Annex A to specify the nonconformity classification of test item. This International Standard is to be used in conjunction with IEC 60051-1:2016.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
7 English
CONTENTS
9 FOREWORD
11 INTRODUCTION
12 1 Scope
2 Normative references
3 Terms and definitions
4 Description, classification and compliance
5 Requirements
5.1 Reference conditions
13 5.2 Limits of intrinsic uncertainty, fiducial value
5.2.1 Limits of intrinsic uncertainty
5.2.2 Correspondence between intrinsic uncertainty and accuracy class
5.2.3 Fiducial value
14 5.3 Nominal range of use and variations
5.3.1 Nominal range of use
Tables
Table 1 – Limits of the nominal range of use and permissible variations in addition to those given in Table 3 of IEC 60051-1:2016
15 5.3.2 Limits of variations
5.3.3 Conditions for the determination of variations
5.4 Operating uncertainty, overall system uncertainty and variations
5.5 Electrical requirements
5.5.1 Electrical safety requirements
5.5.2 Self-heating
5.5.3 Permissible overloads
17 5.5.4 Limiting range of temperature
5.5.5 Deviation from zero
5.5.6 Electromagnetic compatibility (EMC)
5.6 Constructional requirements
5.6.1 General constructional requirements
5.6.2 Damping
Table 2 – Overloads of short duration for ammeters and voltmeters
18 5.6.3 Sealing to prevent access
5.6.4 Scales
5.6.5 Stopper
5.6.6 Preferred values
19 5.6.7 Adjusters, mechanical and/or electrical
5.6.8 Effects of vibration and shock
5.6.9 Degrees of protection provided by enclosure
5.6.10 Terminals
6 Information, markings and symbols
6.1 Information
6.2 Markings, symbols and their locations
6.3 Markings relating to the reference values and nominal ranges of use of influence quantities
6.4 The symbols for marking instruments and accessories
6.5 Markings and symbols for terminals
6.5.1 Requirements for markings
20 6.5.2 Earthing (grounding) terminals
6.5.3 Measuring circuit terminals
6.5.4 Special markings for terminals
6.6 Instructions for use
7 Package
8 Test rules
21 Annex A (normative)Nonconformity classification of tests
Table A.1 – Nonconformity classification of tests
22 Bibliography

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BS EN IEC 60051-2:2021
$142.49