IEC 62052-41:2022

Electricity metering equipment - General requirements, tests and test conditions - Part 41: Energy registration methods and requirements for multi-energy and multi-rate meters

IEC 62052-41:2022 applies only to newly manufactured multi-energy and/or multi-rate static meters and it applies to their type tests only.
This document applies to electricity metering equipment designed to:
• measure and control electrical energy on networks with voltage up to 1 000 V AC, or 1 500 V DC;
• have all functional elements, including add-on modules, enclosed in, or forming a single meter case with exception of indicating displays;
• operate with integrated displays;
• operate with detached indicating displays, or without an indicating display;
• be installed in a specified matching socket or rack;
• optionally, provide additional functions other than those for measurement of electrical energy.
Meters designed for operation with Low Power Instrument Transformers (LPITs as defined in the IEC 61869 series) may be tested for compliance with this document and the relevant IEC 62053 series documents only if such meters and their LPITs are tested together as directly connected meters.
This document does not apply to:
• meters for which the voltage line-to-neutral derived from nominal voltages exceeds 1 000 V AC, or 1 500 V DC;
• meters intended for connection with low power instrument transformers (LPITs as defined in the IEC 61869 series of standards) when tested without such transformers;
• metering systems comprising multiple devices (except for LPITs) physically remote from one another;
• portable meters;
• meters used in rolling stock, vehicles, ships and airplanes;
• laboratory and meter test equipment;
• reference standard meters;
• data interfaces to the register of the meter;
• matching sockets or racks used for installation of electricity metering equipment.
This document does not cover measures for the detection and prevention of fraudulent attempts to compromise a meter’s performance (tampering).

Équipement de comptage de l’électricité - Exigences générales, essais et conditions d’essai - Partie 41: Méthodes d’enregistrement de l’énergie et exigences relatives aux compteurs à tarifs multiples et aux compteurs à énergies multiples

IEC 62052-41:2022 s’applique uniquement aux compteurs statiques à tarifs multiples et/ou à énergies multiples nouvellement fabriqués ainsi qu’à leurs essais de type.
Le présent document s’applique aux équipements de comptage de l’électricité conçus pour:
• le comptage et le pilotage de l’énergie électrique sur les réseaux électriques de tension jusqu’à 1 000 V en courant alternatif ou 1 500 V en courant continu;
• avoir tous les éléments fonctionnels, y compris les modules complémentaires, incorporés dans ou formant un boîtier de compteur unique, à l’exception des afficheurs;
• fonctionner avec des afficheurs intégrés;
• fonctionner avec des afficheurs séparés, ou sans afficheur;
• être installés dans une embase ou un rack correspondant spécifié;
• de façon facultative, assurer des fonctions autres que celles relatives au comptage de l’énergie électrique.
Les compteurs conçus pour fonctionner avec des transformateurs de mesure de faible puissance (LPIT tels que définis dans la série IEC 61869) ne peuvent être soumis à des essais de conformité au présent document et aux documents pertinents de la série IEC 62053 uniquement que si ces compteurs et leurs LPIT sont soumis à l’essai ensemble en tant que compteurs à branchement direct.
Le présent document ne s’applique pas:
• aux compteurs dont la tension phase-neutre déduite des tensions nominales dépasse 1 000 V en courant alternatif ou 1 500 V en courant continu;
• aux compteurs destinés à être connectés à des transformateurs de mesure de faible puissance (LPIT, définis dans la série de normes IEC 61869) lorsqu’ils sont soumis à l’essai sans ces transformateurs;
• aux systèmes de comptage comprenant plusieurs appareils (à l’exception des LPIT) physiquement éloignés les uns des autres;
• aux compteurs portatifs;
• aux compteurs utilisés dans le matériel roulant, les véhicules, les navires et les avions;
• aux équipements de laboratoire et d’essai des compteurs;
• aux compteurs étalons de référence;
• aux interfaces de données avec le registre du compteur;
• aux embases ou aux racks correspondants utilisés pour l’installation des équipements de comptage de l’électricité.
Le présent document ne couvre pas les mesures de détection et de prévention des tentatives de fraude visant à compromettre les performances du compteur (falsification).

General Information

• Status: Published
• Publication Date: 27-Oct-2022
• ICS: 17.220.20 - Measurement of electrical and magnetic quantities
• Technical Committee: TC 13 - Electrical energy measurement and control
• Drafting Committee: WG 11 - TC 13/WG 11
• Current Stage: PPUB - Publication issued
• Start Date: 04-Nov-2022
• Completion Date: 28-Oct-2022

Standards Content (Sample)

IEC 62052-41
®

Edition 1.0 2022-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE


Electricity metering equipment – General requirements, tests and test
conditions –
Part 41: Energy registration methods and requirements for multi-energy and
multi-rate meters

Équipement de comptage de l’électricité – Exigences générales, essais et
conditions d’essai –
Partie 41: Méthodes d’enregistrement de l’énergie et exigences relatives aux
compteurs à tarifs multiples et aux compteurs à énergies multiples

IEC 62052-41:2022-10(en-fr)

---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 62052-41

®


Edition 1.0 2022-10




INTERNATIONAL



STANDARD




NORME


INTERNATIONALE











Electricity metering equipment – General requirements, tests and test

conditions –

Part 41: Energy registration methods and requirements for multi-energy and

multi-rate meters



Équipement de comptage de l’électricité – Exigences générales, essais et


conditions d’essai –

Partie 41: Méthodes d’enregistrement de l’énergie et exigences relatives aux

compteurs à tarifs multiples et aux compteurs à énergies multiples











INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 17.220.20 ISBN 978-2-8322-5813-2




Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

---------------------- Page: 3 ----------------------
– 2 – IEC 62052-41:2022 © IEC 2022
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 7
2 Normative references . 8
3 Terms and definitions . 9
3.1 Definitions related to energy meters . 9
3.2 Definitions related to energy registers . 9
3.3 Definitions related to demand . 10
3.4 Definitions related to interval data . 10
4 Standard electrical values. 11
5 Construction requirements . 11
5.1 General . 11
5.2 Maximum demand reset mechanism . 11
6 Meter marking and documentation . 11
7 Accuracy requirements . 11
8 Multi-energy and multi-rate meters . 11
8.1 General . 11
8.2 Overview. 12
8.3 Energy calculation methods – Calculation methods for active energy in multi-
phase systems . 12
8.4 Registers . 13
8.4.1 General . 13
8.4.2 Energy registers . 13
8.4.3 Maximum demand registers . 14
8.4.4 Load profile (interval) registers . 14
8.4.5 Billing profile data . 15
8.5 Tariff switching schedules . 15
8.6 Limits of error due to varying energy flow directions (bi-directional metering) . 16
8.7 Loss compensation . 17
9 Climatic requirements . 17
10 The effects of external influences . 17
11 Type test . 17
Annex A (informative) Example of test sequence for energy and load profile registers . 18
Annex B (informative) Example of test sequence for demand measurement . 20
Annex C (informative) Error calculations for varying power flow direction test . 21
Bibliography . 23

Figure C.1 – Vectorial and algebraic computation methods . 21

Table 1 – Minimum storage depth in days . 15
Table 2 – Relative error limits under varying energy flow directions for static meters for
AC active energy (classes 0,1 S, 0,2 S, 0,5 S, 0,5, 1 and 2) . 16
Table 3 – Relative error limits under varying energy flow directions for static meters for
AC reactive energy (classes 0,5 S, 1 S, 1, 2 and 3) . 16
Table A.1 – Example of season 1 switching schedule . 18
Table A.2 – Example of season 2 switching schedule . 19

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IEC 62052-41:2022 © IEC 2022 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

ELECTRICITY METERING EQUIPMENT –
GENERAL REQUIREMENTS, TESTS AND TEST CONDITIONS –

Part 41: Energy registration methods and requirements
for multi-energy and multi-rate meters

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
IEC 62052-41 has been prepared by IEC technical committee 13: Electrical energy
measurement and control. It is an International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
13/1869/FDIS 13/1873/RVD

Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.

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– 4 – IEC 62052-41:2022 © IEC 2022
A list of all parts in the IEC 62052 series, published under the general title Electricity metering
equipment – General requirements, tests and test conditions, can be found on the IEC website.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be:
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
NOTE The attention of National Committees is drawn to the fact that equipment manufacturers and testing
organizations may need a transitional period following publication of a new, amended or revised IEC publication in
which to make products in accordance with the new requirements and to equip themselves for conducting new or
revised tests.
It is the recommendation of the committee that the content of this publication be adopted for implementation nationally
not earlier than 2 years from the date of publication.

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IEC 62052-41:2022 © IEC 2022 – 5 –
INTRODUCTION
IEC 62052 series and IEC 62053 series define the physical, safety and metrological aspects of
electricity meters. This document defines the requirements for multi-energy and multi-rate
meters.
This part of IEC 62052 is to be used with relevant parts of the IEC 62052, IEC 62053,
IEC 62055-31, IEC 62058 and IEC 62059 series:
IEC 62052-11:2020, Electricity metering equipment – General requirements, tests and test
conditions – Part 11: Metering equipment
IEC 62052-31:2015, Electricity metering equipment (AC) – General requirements, tests and
test conditions – Part 31: Product safety requirements and tests
IEC 62053-11: Electricity metering equipment (a.c.) – Particular requirements –
2003/AMD1:2016, Part 11: Electromechanical meters for active energy (classes 0,5,
1 and 2)
IEC 62053-21:2020, Electricity metering equipment – Particular requirements – Part 21:
Static meters for AC active energy (classes 0,5, 1 and 2)
IEC 62053-22:2020, Electricity metering equipment – Particular requirements – Part 22:
Static meters for AC active energy (classes 0,1 S, 0,2 S and 0,5 S)
IEC 62053-23:2020, Electricity metering equipment – Particular requirements – Part 23:
Static meters for reactive energy (classes 2 and 3)
IEC 62053-24:2020, Electricity metering equipment – Particular requirements – Part 24:
Static meters for fundamental component reactive energy (classes
0,5 S, 1 S, 1, 2 and 3)
IEC 62053-41:2021, Electricity metering equipment – Particular requirements – Part 41:
Static meters for DC energy (classes 0,5 and 1)
IEC 62055-31:2022, Electricity metering – Payment systems – Part 31: Particular
requirements – Static payment meters for active energy (classes 0,5,
1 and 2)
IEC 62058-11:2008, Electricity metering equipment (AC) – Acceptance inspection – Part 11:
General acceptance inspection methods
IEC 62058-21:2008, Electricity metering equipment (AC) – Acceptance inspection – Part 21:
Particular requirements for electromechanical meters for active energy
(classes 0,5, 1 and 2)
IEC 62058-31:2008, 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)
IEC TR 62059-11:2002, E lectricity metering equipment – Dependability – Part 11: General
concepts
IEC TR 62059-21:2002, E lectricity metering equipment – Dependability – Part 21: Collection of
meter dependability data from the field

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– 6 – IEC 62052-41:2022 © IEC 2022
IEC 62059-32-1:2011, Electricity metering equipment – Dependability – Part 32-1: Durability
– Testing of the stability of metrological characteristics by applying
elevated temperature
This part of IEC 62052 is a standard for type testing electricity meters. This document is
intended to be used in conjunction with the relevant parts of IEC 62052, IEC 62053 and
IEC 62055-31. When any requirement in this document concerns an item already covered in
the relevant parts of IEC 62052, IEC 62053 and IEC 62055-31, the requirements of this
document take precedence.
The test levels are regarded as minimum values that provide for the proper functioning of the
meter under normal working conditions. For special application, other test levels might be
necessary and should be agreed on between the manufacturer and the purchaser.

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IEC 62052-41:2022 © IEC 2022 – 7 –
ELECTRICITY METERING EQUIPMENT –
GENERAL REQUIREMENTS, TESTS AND TEST CONDITIONS –

Part 41: Energy registration methods and requirements
for multi-energy and multi-rate meters



1 Scope
This part of IEC 62052 applies only to newly manufactured multi-energy and/or multi-rate static
meters and it applies to their type tests only.
NOTE 1 For other general requirements, such as electrical, mechanical, safety, marking, dependability, etc., see
the relevant parts of IEC 62052 or IEC 62059. For accuracy requirements and other requirements specific to class
indices, see the relevant parts of IEC 62053.
This document applies to electricity metering equipment designed to:
• measure and control electrical energy on networks with voltage up to 1 000 V AC, or
1 500 V DC;
NOTE 2 For AC electricity meters, the voltage mentioned above is the line-to-neutral voltage derived from nominal
voltages. See IEC 62052-31:2015, Table 7.
NOTE 3 For meters designed for operation with LPITs, only the metering unit is considered a low voltage device. If
the LPITs are rated for voltages exceeding 1 000 V AC, or 1 500 V DC, the combination of the metering unit and
LPITs is not a low voltage device.
• have all functional elements, including add-on modules, enclosed in, or forming a single
meter case with exception of indicating displays;
• operate with integrated displays;
• operate with detached indicating displays, or without an indicating display;
• be installed in a specified matching socket or rack;
• optionally, provide additional functions other than those for measurement of electrical
energy.
Meters designed for operation with Low Power Instrument Transformers (LPITs as defined in
the IEC 61869 series) may be tested for compliance with this document and the relevant
IEC 62053 series documents only if such meters and their LPITs are tested together as directly
connected meters.
NOTE 4 Modern electricity meters typically contain additional functions such as measurement of voltage magnitude,
current magnitude, power, frequency, power factor, etc.; measurement of power quality parameters; load control
functions; delivery, time, test, accounting, recording functions; data communication interfaces and associated data
security functions. The relevant standards for these functions may apply in addition to the requirements of this
document. However, the requirements for such functions are outside the scope of this document.
NOTE 5 Product requirements for power monitoring devices and measurement functions such as voltage magnitude,
current magnitude, power, frequency, etc., are covered in IEC 61557-12:2018. However, devices compliant with IEC
61557-12:2018 are not intended to be used as billing meters, unless they are also compliant with IEC 62052-11 and
relevant IEC 62053-xx accuracy class standards.
NOTE 6 Product requirements for power quality monitoring instruments are covered in IEC 62586-1:2017.
Requirements for power quality measurement techniques (functions) are covered in IEC 61000-4-30:2015.
Requirements for testing of the power quality measurement functions are covered in IEC 62586-2:2017.

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– 8 – IEC 62052-41:2022 © IEC 2022
This document does not apply to:
• meters for which the line-to-neutral voltage derived from nominal voltages exceeds
1 000 V AC, or 1 500 V DC;
• meters intended for connection with low power instrument transformers (LPITs as defined
in the IEC 61869 series of standards) when tested without such transformers;
• metering systems comprising multiple devices (except for LPITs) physically remote from one
another;
• portable meters;
NOTE 7 Portable meters are meters that are not permanently connected.
• meters used in rolling stock, vehicles, ships and airplanes;
• laboratory and meter test equipment;
• reference standard meters;
NOTE 8 Nominal values, accuracy classes, requirements and test methods for reference standard meters are
specified in IEC 62057-1 (First edition under preparation. Stage at the time of publication: IEC FDIS 62057-1:2022).
• data interfaces to the register of the meter;
• matching sockets or racks used for installation of electricity metering equipment.
This document does not cover measures for the detection and prevention of fraudulent attempts
to compromise a meter’s performance (tampering).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 62052-11:2020, Electricity metering equipment – General requirements, tests and test
conditions – Part 11: Metering equipment
IEC 62053-21:2020, Electricity metering equipment – Particular requirements – Part 21: Static
meters for AC active energy (classes 0,5, 1 and 2)
IEC 62053-22:2020, Electricity metering equipment – Particular requirements – Part 22: Static
meters for AC active energy (classes 0,1 S, 0,2 S and 0,5 S)
IEC 62053-23:2020, Electricity metering equipment – Particular requirements – Part 23: Static
meters for reactive energy (classes 2 and 3)
IEC 62053-24:2020, Electricity metering equipment – Particular requirements – Part 24: Static
meters for fundamental component reactive energy (classes 0,5 S, 1 S, 1, 2 and 3)
IEC 62053-41:2021, Electricity metering equipment – Particular requirements – Part 41: Static
meters for DC energy (classes 0,5 and 1)

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IEC 62052-41:2022 © IEC 2022 – 9 –
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 62052-11:2020, as
well as the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1 Definitions related to energy meters
3.1.1
energy meter
instrument intended to measure electrical energy by integrating power with respect to time
[SOURCE: IEC 60050-300:2001, 313-01-35]
3.1.2
bidirectional meter
energy meter measuring energy flow in both directions
Note 1 to entry: For instance, energy received at the measuring point (for example import) and energy supplied at
the same measuring point (for example export).
3.1.3
multi-energy meter
energy meter which, in a single case, measures two or more types of electrical energy
Note 1 to entry: The electrical energy may include active energy, reactive energy or apparent energy.
3.1.4

multi-function meter
energy meter which, in a single case, incorporates other functions in addition to the energy
measurement functions
Note 1 to entry: Multi-function meters may include: maximum demand indicator, time switches, ripple control or
radio receivers, pulse output devices, power monitoring functions, power quality functions, input-output control
functions, communication function, etc.
3.1.5
multi-rate meter
energy meter provided with multiple registers, each becoming operative as defined by a tariff
schedule
Note 1 to entry: A tariff schedule could be held in the meter, operated on a time basis or a consumption basis, or
operated by external control signals.
[SOURCE: IEC 60050-300:2001, 313-06-09, modified to be better adapted to metering and note
added.]
3.2 Definitions related to energy registers
3.2.1
cumulative energy register
quantity of energy registered (active energy, reactive energy or apparent energy) over a period
of time or all the time

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– 10 – IEC 62052-41:2022 © IEC 2022
3.2.2
delta energy register
quantity of energy registered (active energy, reactive energy or apparent energy) over a period
of time or all the time starting with the last activation of the register
3.2.3
total energy register
quantity of energy registered (active energy, reactive energy or apparent energy) over all the
time
Note 1 to entry: Total energy registers are normally cumulative registers.
3.2.4
rate energy register
quantity of energy registered (active energy, reactive energy or apparent energy) during certain
time periods of a day
Note 1 to entry: Rate registers are normally cumulative registers.
3.3 Definitions related to demand
3.3.1
demand
average value of power over an integration period
Note 1 to entry: Demand is calculated by dividing the energy registered during the integration period by the length
of the integration period.
3.3.2
demand integration period
interval of time of an hour [half-hour] [quarter-hour], etc., over which the registered electrical
energy is integrated in order to determine the average hourly [half-hourly] [quarter-hourly], etc.,
demand
EXAMPLE: 15 min, 30 min.
Note 1 to entry: Each demand integration period shall be of t
...