IEC 62058-31:2008

IEC 62058-31
Edition 1.0 2008-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electricity metering equipment (AC) – Acceptance inspection –
Part 31: Particular requirements for static meters for active energy (classes
0,2 S, 0,5 S, 1 and 2)
Equipement de comptage de l’électricité (c.a.) – Contrôle de réception
Partie 31: Exigences particulières pour compteurs statiques d'énergie active
(de classes 0,2 S, 0,5 S, 1 et 2)

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IEC 62058-31
Edition 1.0 2008-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electricity metering equipment (AC) – Acceptance inspection –
Part 31: Particular requirements for static meters for active energy (classes
0,2 S, 0,5 S, 1 and 2)
Equipement de comptage de l’électricité (c.a.) – Contrôle de réception
Partie 31: Exigences particulières pour compteurs statiques d'énergie active
(de classes 0,2 S, 0,5 S, 1 et 2)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
N
CODE PRIX
ICS 17.220; 91.140.50 ISBN 2-8318-9990-7
– 2 – 62058-31 © IEC:2008
CONTENTS
FOREWORD.3
INTRODUCTION.5
1 Scope.6
2 Normative references .6
3 Terms, definitions, symbols and abbreviations.6
4 Test conditions .6
4.1 Place of inspection .6
4.2 Reference conditions.6
4.3 Uncertainty of measurement of percentage error .8
4.4 Cover and seal .9
5 Inspection procedure .9
5.1 Tests to be performed and inspection methods.9
5.2 Preliminary tests and pre-conditioning.9
5.3 Test No. 1: AC voltage test.10
5.4 Test No. 2: Test of no-load condition .10
5.5 Test No. 3: Starting .10
5.6 Tests No. 4…9: Accuracy tests.10
5.7 Test No. 10: Verification of the register .11
5.8 Meters for special services .11
5.9 Other tests .12
6 Criteria for lot acceptance non-acceptance, disposal of unacceptable lots .12
7 Test record and evaluation .12
Bibliography.14

Table 1 – Voltage and current balance for polyphase meters .7
Table 2 – Reference conditions.7
Table 3 – Percentage error limits corrected with uncertainty .8
Table 4 – Acceptance tests and inspection methods .9
Table 5 – AC voltage test.10
Table 6 – Value of current for starting test .10
Table 7 – Accuracy test points and percentage error limits .11
Table 8 – Inspection sheet.13

62058-31 © IEC:2008 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICITY METERING EQUIPMENT (AC) –
ACCEPTANCE INSPECTION –
Part 31: Particular requirements for static meters
for active energy (classes 0,2 S, 0,5 S, 1 and 2)

FOREWORD
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International Standard IEC 62058-31 has been prepared by IEC technical committee 13:
Electrical energy measurement, tariff- and load control.
The text of this standard is based on the following documents:
FDIS Report on voting
13/1432/FDIS 13/1440/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
A list of all parts of IEC 62058 series, published under the general title Electricity metering
equipment (AC) – Acceptance inspection, can be found on the IEC website.

– 4 – 62058-31 © IEC:2008
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
62058-31 © IEC:2008 – 5 –
INTRODUCTION
This standard together with IEC 62058-11 cancels and replaces IEC 61358, Acceptance
inspection for direct connected alternating-current static watt-hour meters for active energy
(Classes 1 and 2).
– 6 – 62058-31 © IEC:2008
ELECTRICITY METERING EQUIPMENT (AC) –
ACCEPTANCE INSPECTION –
Part 31: Particular requirements for static meters
for active energy (classes 0,2 S, 0,5 S, 1 and 2)

1 Scope
This part of IEC 62058 specifies particular requirements for acceptance inspection of newly
manufactured direct connected or transformer operated static meters for active energy
(classes 0,2 S, 0,5 S, 1 and 2) delivered in lots in quantities above 50. The method of
accept
...