IEC 62055-31:2005

Electricity metering - Payment systems - Part 31: Particular requirements - Static payment meters for active energy (classes 1 and 2)

IEC 62055-31:2005 applies to newly manufactured, static watt-hour payment meters of accuracy classes 1 and 2 for direct connection, for the measurement of alternating current electrical energy consumption of a frequency in the range 45 Hz to 65 Hz that include a load switch for the purpose of interruption or restoration of the electricity supply to the load in accordance with the current value of the available credit maintained in the payment meter. It does not apply to static watt-hour payment meters where the voltage across the connection terminals exceeds 600 V (line-to-line voltage for meters for polyphase systems). It applies to payment meters for indoor application only, where the payment meter shall be mounted as for normal service Functional requirements that apply to payment meters are also defined and include informative basic functional requirements and tests for the prepayment mode of operation in Annex A. This bilingual version (2013-05) corresponds to the monolingual English version, published in 2005-09.

Equipements de comptage de l'électricité - Systèmes à paiement - Partie 31: Exigences particulières - Compteurs statiques à paiement d'énergie active (classes 1 et 2)

La CEI 62055-31:2005 s'applique à des compteurs à paiement statiques de wattheures nouvellement fabriqués de classe 1 et 2 pour raccordement direct, pour la mesure de la consommation d'énergie électrique en courant alternatif d'une fréquence allant de 45 Hz à 65 Hz incluant un commutateur de charge ayant pour but d'interrompre ou de rétablir la fourniture d'électricité à la charge en fonction de la valeur courante du crédit disponible maintenu dans le compteur à paiement. Elle ne s'applique pas aux compteurs à paiement dont la tension entre bornes de raccordement dépasse 600 V (tension entre phases pour les compteurs de systèmes polyphasés). Elle s'applique aux compteurs à paiement pour applications intérieures seulement, où le compteur à paiement doit être monté comme en service normal. Les exigences fonctionnelles qui s'appliquent aux compteurs à paiement sont également définies et comportent des exigences fonctionnelles informatives de base et des essais pour le mode de fonctionnement par prépaiement de l'Annexe A. La présente version bilingue (2013-05) correspond à la version anglaise monolingue publiée en 2005-09.

General Information

• Status: Published
• Publication Date: 25-Sep-2005
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 91.140.50 - Electricity supply systems
• Technical Committee: TC 13 - Electrical energy measurement and control
• Drafting Committee: WG 15 - TC 13/WG 15
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 21-Jun-2022

Relations

• Corrected By: IEC 62055-31:2005/COR1:2007 - Corrigendum 1 - Electricity metering - Payment systems - Part 31: Particular requirements - Static payment meters for active energy (classes 1 and 2)
• Effective Date: 05-Sep-2023
• Revised: IEC 62055-31:2022 - Electricity metering - Payment systems - Part 31: Particular requirements - Static payment meters for active energy (classes 0,5, 1 and 2)
• Effective Date: 05-Sep-2023

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD 62055-31
First edition
2005-09
Electricity metering – Payment systems –
Part 31:
Particular requirements –
Static payment meters for active energy
(classes 1 and 2)
Reference number
Publication numbering
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edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the

base publication incorporating amendment 1 and the base publication incorporating

amendments 1 and 2.
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INTERNATIONAL IEC
STANDARD 62055-31
First edition
2005-09
Electricity metering – Payment systems –
Part 31:
Particular requirements –
Static payment meters for active energy
(classes 1 and 2)
 IEC 2005  Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail] Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale XB
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue

– 2 – 62055-31  IEC:2005(E)
CONTENTS
FOREWORD.4

INTRODUCTION.6

1 Scope.7

2 Normative references .8

3 Terms and definitions .8

3.1 General payment metering definitions .8

3.2 Definitions of tokens.10
3.3 Definitions of token carriers.11
3.4 Definitions relating to tokens and token carriers .13
3.5 Definitions related to load switching .14
3.6 Definitions related to timekeeping and tariff control .15
4 Standard electrical values .16
5 Mechanical requirements.16
5.1 General .16
5.2 General mechanical requirements .16
5.3 Case .16
5.4 Window .16
5.5 Terminals .17
5.6 Terminal covers.17
5.7 Creepage and clearance distances.17
5.8 Insulating-encased meter of protective class II .17
5.9 Resistance to heat and fire.17
5.10 Protection against penetration of dust and water .17
5.11 Display and indicators .17
5.12 Output device.19
5.13 Marking of meter .19
5.14 Token carrier interface .19
6 Climatic requirements.19
6.1 General .19
6.2 Temperature range.20
7 Electrical requirements .21

7.1 General .21
7.2 Influence of supply voltage .22
7.3 Power consumption .24
7.4 Influence of short-time overcurrents .24
7.5 Influence of heating.25
7.6 Influence of self-heating .25
7.7 Insulation .25
7.8 Electromagnetic compatibility (EMC) .25
7.9 Load switching .27
7.10 Auxiliary output switches .29
7.11 Token carrier acceptor interface test .29
8 Metering accuracy requirements.29

62055-31  IEC:2005(E) – 3 –
9 Functional requirements .29

9.1 General .29

9.2 Robustness of meter accounting process .30

10 Type test .31

Annex A (informative) Functional performance.32

A.1 Basic functionalities – prepayment mode .32

A.2 Additional functionalities .39

A.3 System compliance requirements .41

Annex B (informative) Reference model for a payment meter.42
B.1 General .42
B.2 Generalised payment meter instance .43
B.3 Functions in a single-part payment meter .45

Annex C (normative) Performance requirements for payment meters with load
switching utilisation categories UC2, UC3 and UC4 .49
C.1 Load switching capabilities .49
C.2 Normal operation.49
C.3 Electrical endurance.50
C.4 Line to load voltage surge withstand .51
C.5 Fault current making capacity .52
C.6 Short-circuit current carrying capacity.53
C.7 Minimum switched current .55
C.8 Dielectric strength.55
C.9 Sequence of tests.56

Annex D (normative) Requirements of timekeeping.57
D.1 General .57
D.2 Synchronous clocks.58
D.3 Crystal-controlled clocks.58

D.4 Tests of timekeeping accuracy.59
D.5 Effects of disturbances on timekeeping.60

Table C.1 – Summary of test currents for UC2, UC3 and UC4.49
Table C.2 – Test sequence and sample plan.56

– 4 – 62055-31  IEC:2005(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
ELECTRICITY METERING – PAYMENT SYSTEMS –

Part 31: Particular requirements –

Static payment meters for active energy

(classes 1 and 2)
FOREWORD
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...

IEC 62055-31 ®
Edition 1.0 2005-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electricity metering – Payment systems –
Part 31: Particular requirements – Static payment meters for active energy
(classes 1 and 2)
Equipements de comptage de l'électricité – Systèmes à paiement –
Partie 31: Exigences particulières – Compteurs statiques à paiement d'énergie
active (classes 1 et 2)
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
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IEC 62055-31 ®
Edition 1.0 2005-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electricity metering – Payment systems –

Part 31: Particular requirements – Static payment meters for active energy

(classes 1 and 2)
Equipements de comptage de l'électricité – Systèmes à paiement –

Partie 31: Exigences particulières – Compteurs statiques à paiement d'énergie

active (classes 1 et 2)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XB
ICS 91.140.50 ISBN 978-2-83220-723-9

– 2 – 62055-31  IEC:2005
CONTENTS
FOREWORD . 4
INTRODUCTION . 6

1 Scope . 7
2 Normative references . 8
3 Terms and definitions . 8
3.1 General payment metering definitions . 8
3.2 Definitions of tokens . 10
3.3 Definitions of token carriers . 11
3.4 Definitions relating to tokens and token carriers . 13
3.5 Definitions related to load switching . 14
3.6 Definitions related to timekeeping and tariff control . 15
4 Standard electrical values . 16
5 Mechanical requirements . 16
5.1 General . 16
5.2 General mechanical requirements . 16
5.3 Case . 16
5.4 Window . 16
5.5 Terminals . 17
5.6 Terminal covers . 17
5.7 Creepage and clearance distances . 17
5.8 Insulating-encased meter of protective class II . 17
5.9 Resistance to heat and fire . 17
5.10 Protection against penetration of dust and water . 17
5.11 Display and indicators . 17
5.12 Output device . 19
5.13 Marking of meter . 19
5.14 Token carrier interface . 19
6 Climatic requirements . 19
6.1 General . 19
6.2 Temperature range . 20
7 Electrical requirements . 21
7.1 General . 21
7.2 Influence of supply voltage . 22
7.3 Power consumption . 24
7.4 Influence of short-time overcurrents . 24
7.5 Influence of heating . 25
7.6 Influence of self-heating . 25
7.7 Insulation . 25
7.8 Electromagnetic compatibility (EMC) . 25
7.9 Load switching . 27
7.10 Auxiliary output switches . 29
7.11 Token carrier acceptor interface test . 29
8 Metering accuracy requirements . 29

62055-31  IEC:2005 – 3 –
9 Functional requirements . 29
9.1 General . 29
9.2 Robustness of meter accounting process . 30
10 Type test . 31

Annex A (informative) Functional performance . 32
A.1 Basic functionalities – prepayment mode . 32
A.2 Additional functionalities . 39
A.3 System compliance requirements . 41

Annex B (informative) Reference model for a payment meter . 42
B.1 General . 42
B.2 Generalised payment meter instance . 43
B.3 Functions in a single-part payment meter . 45

Annex C (normative) Performance requirements for payment meters with load
switching utilisation categories UC2, UC3 and UC4 . 49
C.1 Load switching capabilities . 49
C.2 Normal operation . 49
C.3 Electrical endurance . 50
C.4 Line to load voltage surge withstand . 51
C.5 Fault current making capacity . 52
C.6 Short-circuit current carrying capacity . 53
C.7 Minimum switched current . 55
C.8 Dielectric strength . 55
C.9 Sequence of tests . 56

Annex D (normative) Requirements of timekeeping . 57
D.1 General . 57
D.2 Synchronous clocks . 58
D.3 Crystal-controlled clocks . 58
D.4 Tests of timekeeping accuracy . 59
D.5 Effects of disturbances on timekeeping . 60

Table C.1 – Summary of test currents for UC2, UC3 and UC4 .
...