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IEC 62057-1:2023

(Main)

Electrical energy meters - Test equipment, techniques and procedures - Part 1: Stationary meter test units (MTUs)

Electrical energy meters - Test equipment, techniques and procedures - Part 1: Stationary meter test units (MTUs)

IEC 62057-1:2023 applies to stationary meter test units (MTUs) permanently installed in laboratories, used for testing and calibration of electricity meters, in particular for their type test, acceptance test and verification test. It covers the requirements for automatic MTUs for indoor laboratory application and applies to newly manufactured MTUs to test electricity meters on 50 Hz or 60 Hz networks with an AC voltage up to 600 V (phase to neutral).
If meters are intended for system voltages not specified in this document, special requirements are agreed between the manufacturer and the purchaser.
This document also defines the kind of tests to perform as type tests / routine tests / acceptance tests and commissioning tests for MTUs.
It does not apply to:
• portable reference meters and portable sources;
• electricity meters;
• data interfaces to the meter and test procedures of data interface;
• transformer operated MTUs;
• personal computers supplied together with the MTU.

Compteurs d'énergie électrique - Équipements, techniques et procédures d'essai - Partie 1: Bancs d'essai stationnaires des compteurs d'énergie électrique (MTU)

IEC 62057-1:2023 s'applique aux bancs d'essai stationnaires des compteurs d'énergie électrique (MTU, Meter Test Units) installés en permanence dans les laboratoires, utilisés pour les essais et l'étalonnage des compteurs d'électricité, en particulier pour leurs essais de type, de réception et de vérification. Elle couvre les exigences relatives aux MTU automatisés pour les applications de laboratoire en intérieur et s'applique aux MTU neufs destinés aux essais des compteurs d'électricité sur les réseaux de 50 Hz ou 60 Hz avec une tension alternative allant jusqu'à 600 V (tension entre phase et neutre).
Si les compteurs sont conçus pour des tensions de réseau non spécifiées dans le présent document, des exigences particulières font l'objet d'un accord entre le fabricant et l'acheteur.
Le présent document définit également le type d'essais à effectuer, par exemple essais de type/essais individuels de série/essais d'acceptation et essais de mise en service des MTU.
Il ne s'applique pas:
• aux compteurs de référence portatifs et sources portatives;
• aux compteurs d'électricité;
• aux interfaces de communication avec le compteur et aux procédures d'essai de l'interface de communication;
• aux MTU alimentés par transformateur;
• aux ordinateurs personnels fournis avec le MTU

General Information

Status
Published
Publication Date
28-Mar-2023
ICS
17.220.20 - Measurement of electrical and magnetic quantities
91.140.50 - Electricity supply systems
Technical Committee
TC 13 - Electrical energy measurement and control
Drafting Committee
PT 62057 - TC 13/PT 62057
Current Stage
PPUB - Publication issued
Start Date
10-Mar-2023
Completion Date
29-Mar-2023
Ref Project

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IEC 62057-1:2023 - Electrical energy meters - Test equipment, techniques and procedures - Part 1: Stationary meter test units (MTUs) Released:3/29/2023IEC 62057-1:2023 - Electrical energy meters - Test equipment, techniques and procedures - Part 1: Stationary meter test units (MTUs) Released:3/29/2023
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IEC 62057-1:2023 - Electrical energy meters - Test equipment, techniques and procedures - Part 1: Stationary meter test units (MTUs) Released:3/29/2023
English and French language
156 pages
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IEC 62057-1 ®
Edition 1.0 2023-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electrical energy meters – Test equipment, techniques and procedures –
Part 1: Stationary meter test units (MTUs)

Compteurs d'énergie électrique – Équipements, techniques et procédures
d'essai –
Partie 1: Bancs d'essai stationnaires des compteurs d'énergie électrique (MTU)

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IEC 62057-1 ®
Edition 1.0 2023-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electrical energy meters – Test equipment, techniques and procedures –

Part 1: Stationary meter test units (MTUs)

Compteurs d'énergie électrique – Équipements, techniques et procédures

d'essai –
Partie 1: Bancs d'essai stationnaires des compteurs d'énergie électrique (MTU)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220.20; 91.140.50 ISBN 978-2-8322-6437-9

– 2 – IEC 62057-1:2023 © IEC 2023
CONTENTS
FOREWORD . 7
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 10
3.1 Definitions related to the elements of the MTU . 11
3.2 Definitions of active, reactive and apparent power . 12
3.3 Definitions related to influence quantities . 15
3.4 Definitions related to accuracy . 16
3.5 Definitions related to testing. 17
4 Meter test units and automated meter test units. 18
5 Meter accuracy test methods . 19
5.1 General . 19
5.2 Energy comparison method . 19
5.3 Power–time measurement method (wattmeter method with register reading) . 20
5.4 Pulse comparison method . 20
6 Standard electrical values. 21
6.1 Mains supply . 21
6.2 Output values and ranges of the test circuits . 22
6.2.1 Test voltage circuit . 22
6.2.2 Test current circuit . 22
6.2.3 Phase angle . 23
6.2.4 Frequency . 23
6.2.5 Harmonics . 24
6.3 Standard meter . 24
6.3.1 Accuracy class . 24
6.3.2 Standard electrical values . 24
6.4 Magnetic field of the MTU . 25
6.5 Electrical and mechanical values for the scanning head(s) . 25
6.6 Error calculation system . 26
6.6.1 Functional requirements . 26
6.6.2 Parameters . 26
7 Constructional requirements of the MTU . 26
7.1 General requirements . 26
7.2 Source and standard meter . 26
7.3 Meter mounting system . 27
7.3.1 General . 27
7.3.2 Terminals . 27
8 Information and marking requirements . 28
8.1 General . 28
8.2 Labels, signs and signals . 29
8.3 Information for selection . 30
8.3.1 General . 30
8.3.2 General information . 30
8.3.3 Information related to standard meters . 30
8.3.4 Information related to sources, error calculation systems and frequency
generators . 31

8.3.5 Information related to the ICTs and MSVTs . 31
8.3.6 For the communication interfaces and error calculation systems . 31
8.4 Information for installation and commissioning . 32
8.4.1 General . 32
8.4.2 Dimensions and mass . 32
8.4.3 Connection . 32
8.4.4 Protection – Protective class and earthing . 32
8.4.5 Self-consumption . 33
8.5 Information for use . 33
8.5.1 General . 33
8.5.2 Display, push buttons and other controls . 33
8.5.3 Connection to user’s equipment . 33
8.5.4 External protection devices . 33
8.5.5 Cleaning . 33
8.5.6 Information for maintenance . 33
9 Climatic conditions for the MTU . 34
9.1 Normal environmental conditions . 34
9.2 Extreme environmental conditions. 34
9.3 Temperature limits and resistance to heat . 34
10 Electrical requirements of the MTU . 35
10.1 Influence of mains supply. 35
10.2 Insulation . 35
10.2.1 General . 35
10.2.2 Clearances and creepage distances . 35
10.2.3 Verification of clearances and creepage distances . 35
10.2.4 AC voltage test . 35
11 Electromagnetic compatibility . 36
11.1 General
...

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