EN 60051-6:1989

SLOVENSKI STANDARD
01-avgust-1995
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Direct acting indicating analogue electrical measuring instruments and their accessories -
- Part 6: Special requirements for ohmmeters (impedance meters) and conductance
meters
Direkt wirkende anzeigende elektrische Meßgeräte und ihr Zubehör - Meßgeräte mit
Skalenanzeige -- Teil 6: Spezielle Anforderungen für Widerstands- (Scheinwiderstands-)
und Leitfähigkeits-Meßgeräte
Appareils mesureurs électriques indicateurs analogiques à action directe et leurs
accessoires -- Partie 6: Prescriptions particulières pour les ohmmètres (les
impédancemètres) et les inductancemètres
Ta slovenski standard je istoveten z: EN 60051-6:1989
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
51-6
INTERNATIONAL
Quatrième édition
STAN DARD
Fourth edition
Appareils mesureurs électriques indicateurs
analogiques à action directe et
leurs accessoires
Sixième partie:
Prescriptions particulières pour les ohmmètres
(les impédancemètres) et les conductancemètres
Direct acting indicating analogue electrical
measuring instruments and their accessories
Part 6:
Special requirements for ohmmeters (impedance
meters) and conductance meters
© CEI 1984 Droits de reproduction réservés — Copyright - all rights reserved
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microfilms, sans l'accord écrit de l'éditeur. in writing from the publisher
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51-6 © IEC 1984
CONTENTS
Page
FOREWORD 5
PREFACE
Clause
1. Scope
2. Definitions 7
3. Description, classification and compliance 7
4. Reference conditions and intrinsic errors 9
5. Nominal range of use and va riations
Further electrical and mechanical requirements 11
6.
7. Constructional requirements 13
8. Information, general markings and symbols 13
9. Markings and symbols for terminals 15
10. Tests to prove compliance with this standard
APPENDIX Suggestions for routine tests 17
A-6 —
51-6 © IEC 1984 - 5
INTERNATIONAL ELECTROTECHNICAL COMMISSION
DIRECT ACTING INDICATING ANALOGUE ELECTRICAL MEASURING
INSTRUMENTS AND THEIR ACCESSORIES
Part 6: Special requirements for ohmmeters (impedance meters)
and conductance meters
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 international 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 IEC expresses the wish that all National Committees should adopt the text of
the IEC recommendation for their national rules in so far as national conditions will permit. Any divergence between the IEC
recommendation and the corresponding national rules should, as far as possible, be clearly indicated in the latter.
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 constitues Part 6.
The general layout for the revised Publication 51 is as follows:
Part 1: Definitions and General Requirements Common to all Parts.
Part 2: Special Requirements for Ammeters and Voltmeters.
Part 3: Special Requirements for Wattmeters and Varmeters.
Part 4: Special Requirements for Frequency Meters.
Pa
rt 5: Special Requirements for Phase Meters, Power Factor Meters and Synchroscopes.
Part 6: Special Requirements for Ohmmeters (Impedance Meters) and Conduct ance Meters.
Part 7: Special Requirements for Multi-function Instruments.
Part 8: Special Requirements for Accessories.
Part 9: Recommended Test Methods.
1.
Parts 2 to 9 are not complete in themselves and shall be read in conjunction with Pa rt
All of these parts are arranged in the same format and a standard relationship between subject and clause number is maintained
throughout. In addition, tables, figures and appendices add a suffix to the pa rt number in order to differentiate the pa rts. This
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:
ix Months' Rule Report on Voting
S
I3B(CO)89 13B(CO)98
Further information can be found in the Report on Voting indicated in the table above.

51-6 © IEC 1984 — 7
DIRECT ACTING INDICATING ANALOGUE ELECTRICAL MEASURING
INSTRUMENTS AND THEIR ACCESSORIES
Part 6: Special requirements for ohmmeters (impedance meters)
and conductance meters
1. Scope
1.1 to 1.8 See Part 1.
1.9 Part 6 of the standard does not apply to resistivity meters (specific resistance meters), insulation
resistance meters used in energized circuits or conductivity meters (specific conductance met-
ers).
2. Definitions
See Part 1.
3. Description, classification and compliance
3.1 Description
Ohmmeters shall be described:
rt 1.
3.1.1 According to their method of operation as given in Sub-clause 2.2 of Pa
3.1.2 According to whether they measure resistance values by a two-terminal or a four-terminal
method.
3.1.3 According to whether they have a linear scale or a non-linear scale.
3.2 Classifi
...