SIST EN 60051-9:1995

SLOVENSKI SIST EN 60051-9:1995
prva izdaja
STANDARD
avg 1995
Neposredni kazalni analogni električni merilni instrumenti in njihov pribor –
9. del: Priporočene preskusne metode (IEC 60051-9:1988)
Direct acting indicating analogue electrical measuring instruments and their
accessories - Part 9: Recommended test methods (IEC 51-9:1988)
ICS 17.220.20 Referenčna številka
SIST EN 60051-9:1995(en)
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

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NORME CEI
IEC
INTERNATIONALE
51-9
INTERNATIONAL
Quatrième édition
STANDARD
Fourth edition
1988
Appareils mesureurs électriques
indicateurs analogiques à action directe
et leurs accessoires
Neuvième partie:
Méthodes d'essai recommandées
Direct acting indicating analogue
electrical measuring instruments
and their accessories
Part 9:
Recommended test methods
de reproduction réservés — Copyright — all rights reserved
© CEI 1988 Droits
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51-9 (4) © IEC - 3
CONTENTS
Page
FOREWORD 5
PREFACE 5
Clause
1. Scope and general test conditions 9
2. Intrinsic error tests 17
3. Variation tests 33
101
4. Other tests
5. Index of tests and test conditions 129

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51-9 (4) © [EC - 5
INTERNATIONAL ELECTROTECHNICAL COMMISSION
DIRECT ACTING INDICATING ANALOGUE ELECTRICAL MEASURING
INSTRUMENTS AND THEIR ACCESSORIES
Part 9: Recommended test methods
FOREWORD
The formal decisions or agreements of the IEC on technical matters, prepared by Technical
1)
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.
They have the form of recommendations for international use and they are accepted by the
2)
National Committees in that sense.
expresses the wish that all
3) In order to promote international unification, the IEC
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 recom-
mendation and the corresponding national rules should, as far as possible, be clearly
indicated in the latter.
PREFACE
This standard has been prepared by IEC ,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 IEC Publication 51.
This standard constitutes Part 9.
The general layout for the revised Publication 51 is as follows:
Definitions and general requirements common to all parts.
Part 1:
Special requirements for ammeters and voltmeters.
Part 2:
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.

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51-9 (4) e IEC - 7

Part 8: Special requirements for accessories.

Part 9: Recommended test methods.
Part 9 is not complete in itself as it contains no requirements. The
requirements are contained in Parts 1 to 8 and include references to the
test sub-clauses of Part 9.
Three tests specified in Part 9 have no corresponding requirements in
Parts 1 to 8 but are included to permit standardization of the test methods
for characteristics that are normally specified by agreement between the
manufacturer and the user. These tests are:
Pull-in difference frequency
Tracking error
Simultaneous influence of voltage and power factor.
The text of this standard is based on the following documents:
Six Months' Rule Report on Voting
13B(C0)105 85(C0)5
Full information on the voting for the approval of this standard can be
found in the Voting Report indicated in the above table.

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51-9 (4) © IEC - 9
DIRECT ACTING INDICATING ANALOGUE
...