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SLOVENSKI STANDARD
01-avgust-1995
1HSRVUHGQLND]DOQLDQDORJQLHOHNWULþQLPHULOQLLQVWUXPHQWLLQQMLKRYSULERU±GHO
3RVHEQH]DKWHYH]DYHþIXQNFLMVNHLQVWUXPHQWH ,(&
Direct acting indicating analogue electrical measuring instruments and their accessories -
- Part 7: Special requirements for multi-function instruments
Direkt wirkende anzeigende elektrische Meßgeräte und ihr Zubehör - Meßgeräte mit
Skalenanzeige -- Teil 7: Spezielle Anforderungen für Vielfach-Meßgeräte
Appareils mesureurs électriques indicateurs analogiques à action directe et leurs
accessoires -- Partie 7: Prescriptions particulières pour les appareils à fonctions
multiples
Ta slovenski standard je istoveten z: EN 60051-7:1989
ICS:
17.220.20 0HUMHQMHHOHNWULþQLKLQ Measurement of electrical
PDJQHWQLKYHOLþLQ and magnetic quantities
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
NORME
CEI
INTERNATIONALE
IEC
51-7
INTERNATIONAL
Quatrième édition
STANDARD
Fourth edition
Appareils mesureurs électriques indicateurs
analogiques à action directe et
leurs accessoires
Septième partie:
Prescriptions particulières pour les appareils à
fonctions multiples
Direct acting indicating analogue electrical
measuring instruments and their accessories
Part 7:
Special requirements for multi-function instruments
© CEI 1984 Droits de reproduction réservés — Copyright - all rights reserved
Aucune partie de cette
publication ne peut être reproduite ni No part of this publication may be reproduced or utilized
utilisée sous quelque forme que ce soit et par aucun procédé, in any form or by any means, electronic or mechanical,
électronique ou mécanique,
y compris la photocopie et les including photocopying and microfilm, without permission
microfilms, sans l'accord écrit de l'éditeur. in writing from the publisher
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51-7 © IEC 1984
CONTENTS
Page
FOREWORD
PREFACE
Clause
1. Scope
2. Definitions
Desc ption, classification and compliance 7
3. ri
Reference conditions and intrinsic errors 4.
5. Nominal range of use and variations
6. Further electrical and mechanical requirements
7. Constructional requirements
Information, general markings and symbols 11
8.
Markings and symbols for terminals 9.
10. Tests to prove compliance with this standard
-7 - 5 -
51 © IEC 1984
INTERNATIONAL ELECTROTECHNICAL COMMISSION
DIRECT ACTING INDICATING ANALOGUE ELECTRICAL MEASURING
INSTRUMENTS AND THEIR ACCESSORIES
Part 7: Special requirements for multi-function instruments
FOREWORD
1) The formal decisions or agreements of the I EC on technical matters, prepared by Technical Committees on which all the National
Committees having a special interest therein are represented, express, as nearly as possible, an inte rnational consensus of opinion
on the subjects dealt with.
2) They have the form of recommendations for international use and they are accepted by the National Committees in that
sense.
3) In order to promote international unification, the I E C expresses the wish that all National Committees should adopt the text of
the I E C recommendation for their national rules in so far as national conditions will permit. Any divergence between the I E C
tter.
recommendation and the corresponding national rules should, as far as possible, be clearly indicated in the la
PREFACE
This standard has been prepared by I EC Technical Committee No. 85: Measuring Equipment for Basic Electrical Quantities
(former Sub-Committee 13B: Electrical Measuring Instruments).
This fourth edition replaces the third edition of I EC Publication 51.
This standard constitutes Part 7.
The general layout for_the revised Publication 51 is as follows:
Part 1: Definitions and General Requirements Common to all Pa rts.
Part 2: Special Requirements for Ammeters and Voltmeters.
Part 3: Special Requirements for Wattmeters and Varmeters.
Part
4: Special Requirements for Frequency Meters.
Part 5: Special Requirements for Phase Meters, Power Factor Meters and Synchroscopes.
Part 6: Special Requirements for Ohmmeters (Impedance Meters) and Conductance Meters.
Part 7: Special Requirements for Multi-function Instruments.
Part
8: Special Requirements for Accessories.
Part 9: Recommended Test Methods.
rt rt 1.
Pa s 2 to 9 are not complete in themselves and shall be read in conjunction with Pa
All of these parts are arranged in the same format and a standard relationship between subject and clause number is maintained
number in order to differentiate the pa rts. This
throughout. In addition, tables, figures and appendices add a suffix to the pa rt
re-arrangement will assist the reader of I EC Publication 51 to distinguish information relating to the different types of instru-
ments.
The text of this standard is based upon the following documents:
Six Months' Rule Report on Voting
13B(CO)90 13B(CO)99
Further information can be found in the Repo on Voting indicated in the table above.
rt
51-7©IEC 1984 — 7 —
DIRECT ACTING IND
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