SIST EN 62974-1:2017

Monitoring and measuring systems used for data collection, gathering and analysis - Part 1: Device requirements (IEC 62974-1:2017)

IEC 62974-1:2017 specifies product and performance requirements for devices that fall under the heading of “monitoring and measuring systems used for data collection, gathering and analysis”, for industrial, commercial and similar use rated below or equal to 1 kV AC and 1,5 kV DC.
These devices are fixed and are intended to be used indoors as panel-mounted devices, or as modular devices fixed on a DIN rail, or as housing devices fixed on a DIN rail, or as devices fixed by other means inside a cabinet.
These devices are used to upload or download information (energy measured on loads, power metering and monitoring data, temperature information…), mainly for energy efficiency purposes. These devices are known as energy servers, energy data loggers, data gateways and I/O data concentrators.

Erfassungs- und Messsysteme zur Datenerfassung, -Übertragung und -Analyse - Teil 1: Anforderungen an die Geräte (IEC 62974-1:2017)

Systèmes de contrôle et de mesure utilisés pour la collecte et l'analyse de données (IEC 62974-1:2017)

L'IEC 62974-1:2017 spécifie les exigences relatives aux produits et aux performances des dispositifs intégrés aux "systèmes de surveillance et de mesure utilisés pour la collecte et l'analyse de données", dans le cadre d'une exploitation industrielle, commerciale et analogue, et présentant des caractéristiques assignées inférieures ou égales à 1 kV en courant alternatif et à 1,5 kV en courant continu.
Ces dispositifs sont fixes et sont destinés à une utilisation en intérieur comme les dispositifs montés sur panneau, les dispositifs modulaires fixés sur un rail DIN, les dispositifs en boîtier fixés sur un rail DIN ou les dispositifs fixés par un autre moyen à l'intérieur d'une armoire.
Ces dispositifs permettent de charger ou de télécharger des informations (énergie mesurée sur les charges, données de mesure et de surveillance de la puissance, informations relatives à la température…) essentiellement à des fins d'efficacité énergétique. Ces dispositifs sont des serveurs d'énergie, des enregistreurs de données d'énergie, des passerelles de données et des concentrateurs de données d'E/S.

Sistemi za nadzorovanje in merjenje namenjeni za zbiranje podatkov, nabiranje in analize podatkov - 1. del: Zahteve za napravo (IEC 62974-1:2017)

IEC 62974-1:2017 določa zahteve glede izdelkov in zmogljivosti za naprave, ki spadajo pod naslov »sistemi za nadzorovanje in merjenje, namenjeni za zbiranje podatkov, nabiranje in analize podatkov« za industrijsko, komercialno in podobno uporabo z napajanjem največ 1 kV izmenične napetosti in 1,5 kV enosmerne napetosti.
Te naprave so fiksne in namenjene za uporabo v zaprtih prostorih kot vgrajene naprave ali kot modularne naprave, pritrjene na tračnico DIN, ali kot naprave z ohišjem, pritrjene na tračnico DIN, ali kot naprave, pritrjene v ohišju na drug način.
Te naprave se uporabljajo za prenos podatkov (energija, merjena pri obremenitvah, merjenje napajanja in nadzor podatkov, podatki o temperaturi), predvsem za namene energetske učinkovitosti. Te naprave so znane kot energetski strežniki, zapisovalci podatkov o energiji, podatkovni prehodi in koncentratorji podatkov I/O.

General Information

• Status: Published
• Publication Date: 13-Nov-2017
• ICS: 17.220.20 - Measurement of electrical and magnetic quantities
• ICS: 27.015 - Energy efficiency. Energy conservation in general
• ICS: 35.080 - Software
• Technical Committee: MOV - Measuring equipment for electromagnetic quantities
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 22-Aug-2017
• Due Date: 27-Oct-2017
• Completion Date: 14-Nov-2017
• Ref Project: EN 62974-1:2017 - Monitoring and measuring systems used for data collection, gathering and analysis - Part 1: Device requirements

Relations

• Revised: SIST EN IEC 62974-1:2025 - Monitoring and measuring systems used for data collection, gathering and analysis - Part 1: Device requirements (IEC 62974-1:2024)
• Effective Date: 25-Nov-2021

Overview

EN 62974-1:2017 (identical to IEC 62974-1:2017) specifies product and performance device requirements for monitoring and measuring systems used for data collection, gathering and analysis. The scope covers fixed, indoor devices rated up to 1 kV AC and 1.5 kV DC, intended as panel‑mounted, DIN‑rail modules or cabinet‑mounted equipment. Typical device types include energy servers, energy data loggers, data gateways and I/O data concentrators used primarily for energy efficiency, power metering and environmental monitoring.

Key Topics

EN 62974-1:2017 defines technical and testing expectations across device life‑cycle and practical deployment:

• Device scope & ratings
  • Indoor fixed devices for industrial, commercial and similar use
  • Voltage limits: ≤ 1 kV AC, ≤ 1.5 kV DC
• Design and construction
  • Product coding and general architecture (panel/DIN‑rail/cabinet)
  • Requirements for general data processing and minimum embedded functions
• Functional requirements
  • Communication/connectivity features (gateway, logging and upload/download)
  • Management of digital/analogue I/O, pulse inputs/outputs
  • Time stamping, logged data handling, aggregation and basic analysis
  • Local HMI visualisation and configuration management
• Safety and EMC
  • Clearances, creepage, accessible parts and hazardous live part protection
  • Electromagnetic compatibility including surge, magnetic field and voltage dip immunity (references to IEC 61000 series)
• Mechanical & environmental
  • IP (ingress) and IK (impact) enclosure requirements, environmental classification and climatic tests
• Marking, documentation & tests
  • Device marking, installation/operating instructions and type/routine testing criteria

Applications and Who Uses It

EN 62974-1 is practical for:

• Manufacturers of energy servers, data loggers, gateways and I/O concentrators designing products for buildings, plants and utilities
• System integrators and OEMs specifying compliant monitoring hardware
• Facility managers, energy managers and BMS/BEMS integrators deploying metering and monitoring for energy efficiency, load monitoring, power quality and temperature logging
• Test laboratories and conformity assessors conducting type and routine tests
• Procurement and compliance teams needing harmonised device requirements for tenders

Practical deployments include submetering, building energy management, industrial energy monitoring, remote data collection for analytics and integration with EMS/SCADA.

Related Standards

EN 62974-1 references and aligns with several IEC/CENELEC standards relevant to testing, safety and EMC, including:

• IEC 60068 (environmental tests), IEC 60529 (IP code), IEC 62262 (IK code)
• IEC 61000-4-5, -4-8, -4-11 (EMC immunity)
• IEC 61010 series (safety), IEC 61326-1 (EMC requirements)
• IEC 61131-2, IEC 62053-31; ISO 50001 (energy management) for broader system context

EN 62974-1:2017 is a key reference for anyone specifying or certifying fixed monitoring and measuring devices for data collection and energy efficiency programs.

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2017
Sistemi za nadzorovanje in merjenje namenjeni za zbiranje podatkov, nabiranje in
analize podatkov - 1. del: Zahteve za napravo (IEC 62974-1:2017)
Monitoring and measuring systems used for data collection, gathering and analysis - Part
1: Device requirements (IEC 62974-1:2017)
Erfassungs- und Messsysteme zur Datenerfassung, -Übertragung und -Analyse - Teil 1:
Anforderungen an die Geräte (IEC 62974-1:2017)
Systèmes de contrôle et de mesure utilisés pour la collecte et l'analyse de données (IEC
62974-1:2017)
Ta slovenski standard je istoveten z: EN 62974-1:2017
ICS:
17.220.20 0HUMHQMHHOHNWULþQLKLQ Measurement of electrical
PDJQHWQLKYHOLþLQ and magnetic quantities
27.015 (QHUJLMVNDXþLQNRYLWRVW Energy efficiency. Energy
2KUDQMDQMHHQHUJLMHQD conservation in general
VSORãQR
35.080 Programska oprema Software
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 62974-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2017
ICS 17.220.20
English Version
Monitoring and measuring systems used for data collection,
gathering and analysis - Part 1: Device requirements
(IEC 62974-1:2017)
Systèmes de surveillance et de mesure utilisés pour la Erfassungs- und Messsysteme zur Datenerfassung, -
collecte et l'analyse de données - Partie 1: Exigences Übertragung und -Analyse - Teil 1: Anforderungen an die
relatives aux dispositifs Geräte
(IEC 62974-1:2017) (IEC 62974-1:2017)
This European Standard was approved by CENELEC on 2017-06-26. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 62974-1:2017 E
European foreword
The text of document 85/587/FDIS, future edition 1 of IEC 62974-1, prepared by IEC/TC 85
"Measuring equipment for electrical and electromagnetic quantities" was submitted to the IEC-
CENELEC parallel vote and approved by CENELEC as EN 62974-1:2017.
The following dates are fixed:
(dop) 2018-03-26
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2020-06-26
• latest date by which the national
standards conflicting with the
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Endorsement notice
The text of the International Standard IEC 62974-1:2017 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated :
IEC 60068-1 NOTE Harmonized as EN 60068-1.
IEC 60068-2-30 NOTE Harmonized as EN 60068-2-30.
IEC 60364-8-1 NOTE Harmonized as HD 60364-8-1.
IEC 60950 (Series) NOTE Harmonized as EN 60950 (Series).
IEC 61557-12 NOTE Harmonized as EN 61557-12.
CISPR 24:2010 NOTE Harmonized as EN 55024:2010.
ISO 50001 NOTE Harmonized as EN ISO 50001.

- EN 62974-1:2017
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60068-2-1 -  Environmental testing -- Part 2-1: Tests - EN 60068-2-1 -
Test A: Cold
IEC 60068-2-2 -  Environmental testing -- Part 2-2: Tests - EN 60068-2-2 -
Test B: Dry heat
IEC 60068-2-14 -  Environmental testing -- Part 2-14: Tests - EN 60068-2-14 -
Test N: Change of temperature
IEC 60068-2-78 -  Environmental testing -- Part 2-78: Tests - EN 60068-2-78 -
Test Cab: Damp heat, steady state
IEC 60529 -  Degrees of protection provided by - -
enclosures (IP Code)
IEC 60721-3-1 -  Classification of environmental conditions -EN 60721-3-1 -
- Part 3: Classification of groups of
environmental parameters and their
severities -- Section 1: Storage
IEC 60721-3-2 -  Classification of environmental conditions -EN 60721-3-2 -
- Part 3: Classification of groups of
environmental parameters and their
severities -- Section 2: Transportation
IEC 60721-3-3 -  Classification of environmental conditions -EN 60721-3-3 -
- Part 3: Classification of groups of
environmental parameters and their
severities -- Section 3: Stationary use at
weatherprotected locations
IEC 61000-4-5 -  Electromagnetic compatibility (EMC) - PartE N 61000-4-5 -
4-5: Testing and measurement techniques
- Surge immunity test
IEC 61000-4-8 -  Electromagnetic compatibility (EMC) -- PartE N 61000-4-8 -
4-8: Testing and measurement techniques
- Power frequency magnetic field immunity
test
IEC 61000-4-11 -  Electromagnetic compatibility (EMC) -- PartE N 61000-4-11 -
4-11: Testing and measurement
techniques - Voltage dips, short
interruptions and voltage variations
immunity tests
IEC 61010 series Safety requirements for electrical EN 61010 series
equipment for measurement, control and
laboratory use
IEC 61131-2 2003 Programmable controllers -- Part 2: - -
Equipment requirements and tests
IEC 61326-1 -  Electrical equipment for measurement, EN 61326-1 -
control and laboratory use - EMC
requirements -- Part 1: General
requirements
IEC 62053-31 -  Electricity metering equipment (a.c.) -- EN 62053-31 -
Particular requirements -- Part 31: Pulse
output devices for electromechanical and
electronic meters (two wires only)
IEC 62262 -  Degrees of protection provided by EN 62262 -
enclosures for electrical equipment against
external mechanical impacts (IK code)

IEC 62974-1 ®
Edition 1.0 2017-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Monitoring and measuring systems used for data collection, gathering and

analysis –
Part 1: Device requirements
Systèmes de surveillance et de mesure utilisés pour la collecte et l'analyse de

données –
Partie 1: Exigences relatives aux dispositifs

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220.20 ISBN 978-2-8322-4359-6

– 2 – IEC 62974-1:2017 © IEC 2017
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
3.1 General definitions . 9
3.2 Device definitions . 10
3.3 Definitions related to inputs and outputs . 10
4 Environmental conditions . 11
5 Ratings . 11
6 Design and construction . 11
6.1 General . 11
6.2 Product coding . 12
6.3 General architecture of devices . 12
6.4 General data processing . 13
6.5 Requirements on minimum functions embedded in devices . 13
6.6 Requirements on functions . 14
6.6.1 General . 14
6.6.2 Communication connectivity features . 14
6.6.3 Management of digital and/or analogue input(s) or output(s) . 15
6.6.4 Data time stamping . 15
6.6.5 Management of logged data. 15
6.6.6 Management of aggregated data . 16
6.6.7 Analysis of aggregated data . 16
6.6.8 Local visualisation on a Human Machine Interface . 16
6.6.9 Configuration management . 16
6.7 Safety requirements . 16
6.7.1 General . 16
6.7.2 Clearances and creepage distances . 17
6.7.3 Accessible parts . 17
6.7.4 Hazardous live parts . 17
6.8 EMC requirements . 17
6.8.1 General . 17
6.8.2 Class 1 devices . 17
6.8.3 Class 2 devices . 17
6.9 Mechanical requirements . 17
6.9.1 Product mechanical robustness . 17
6.9.2 Enclosure robustness (IK code) . 17
6.9.3 Degree of protection by enclosures (IP code) . 18
6.10 Marking . 18
6.10.1 General . 18
6.10.2 Device marking . 18
6.11 Operating and installation instructions . 19
6.11.1 General . 19
6.11.2 Pulse input(s)/output(s) . 19
6.11.3 Installation description . 19

IEC 62974-1:2017 © IEC 2017 – 3 –
7 Type tests . 20
7.1 Performance criteria for type tests . 20
7.2 Safety tests . 21
7.3 EMC tests . 21
7.4 Climatic tests . 21
7.5 Mechanical tests . 22
7.5.1 Degree of protection provide by enclosures for electrical equipment
against external mechanical impacts (IK code) . 22
7.5.2 Degree of protection by enclosure (IP code) . 22
8 Routine tests . 22
Annex A (informative) Example of system architectures . 23
Annex B (informative) Example of device processing . 25
Bibliography . 26

Figure 1 – Lifecycle solutions for energy efficiency . 6
Figure 2 – General architecture of devices . 13
Figure A.1 – Basic local monitoring and measuring system architecture . 23
Figure A.2 – Advanced local monitoring and measuring system architecture . 23
Figure A.3 – Remote monitoring and measuring system architecture . 24
Figure B.1 – General data processing of the general device . 25

Table 1 – Environmental conditions . 11
Table 2 – Devices coding table . 12
Table 3 – List of minimum functions of the devices . 14
Table 4 – Enclosure mechanical requirements . 18
Table 5 – Minimum IP requirements . 18
Table 6 – Marking to apply to devices . 19
Table 7 –Specific performance criteria . 20
Table 8 – Additional tests for class 2 devices . 21
Table 9 – Climatic requirements . 22

– 4 – IEC 62974-1:2017 © IEC 2017
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MONITORING AND MEASURING SYSTEMS USED
FOR DATA COLLECTION, GATHERING AND ANALYSIS –

Part 1: Device requirements
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 in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
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.
International Standard IEC 62974-1 has been prepared by IEC technical committee 85:
Measuring equipment for electrical and electromagnetic quantities.
The text of this standard is based on the following documents:
FDIS Report on voting
85/587/FDIS 85/589/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

IEC 62974-1:2017 © IEC 2017 – 5 –
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://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.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
– 6 – IEC 62974-1:2017 © IEC 2017
INTRODUCTION
The use of electrical energy needs to be optimised worldwide to ensure more efficient use of
available energy sources, for enhanced competitiveness, and for reducing greenhouse gas
emissions and other related environmental impacts.
It implies better energy management leading to a necessary improvement of energy
performance, particularly in terms of efficiency, use and consumption. This can be
summarized by the lifecycle shown in Figure 1:
Lifecycle solutions for Energy Efficiency
Energy audit
and Measure
building, industrial
process
Optimize through
Fix the basics Monitor, maintain,
Control
Automation and
Low consumption improve
improve
regulation
devices, Meters installation
HVAC control,
insulation material, Monitoring services
Energy management system
lightning control,
power factor EE analysis software
(EnMS) according to ISO 50001
variable speed
correction…
with monitoring and measurement
drives…
equipment (PMD) according to
IEC 61557-12
Passive Active
energy efficiency energy efficiency
IEC
Figure 1 – Lifecycle solutions for energy efficiency
Standards such as ISO 50001, ISO 50002, ISO 50006 and IEC 60364-8-1 are providing
information related to this topic.
What is not known cannot be changed, and what is not measured is not known. Consequently,
there is an increasing need to measure energy within the installations in order to:
• monitor performance indicators or to monitor energy baselines, or
• compare energy performance between baseline period and reporting period as described
in ISO 50006.
Measurements can be collected by employees at a defined frequency, provided absences are
accounted for (vacation, off sick, etc.), provided the measurements are relevant (number of
measurement points to collect) and provided measurements can be relatively coherent
(synchronism).
This is why more and more devices are used for collection, gathering and sometimes analysis
of measured data. Some typical architectures are given in Annex A.

IEC 62974-1:2017 © IEC 2017 – 7 –
MONITORING AND MEASURING SYSTEMS USED
FOR DATA COLLECTION, GATHERING AND ANALYSIS –

Part 1: Device requirements
1 Scope
This part of IEC 62974 specifies product and performance requirements for devices that fall
under the heading of “monitoring and measuring systems used for data collection, gathering
and analysis”, for industrial, commercial and similar use rated below or equal to 1 kV AC and
1,5 kV DC.
These devices are fixed and are intended to be used indoors as panel-mounted devices, or as
modular devices fixed on a DIN rail, or as housing devices fixed on a DIN rail, or as devices
fixed by other means inside a cabinet.
These devices are used to upload or download information (energy measured on loads, power
metering and monitoring data, temperature information…), mainly for energy efficiency
purposes. These devices are known as energy servers, energy data loggers, data gateways
and I/O data concentrators.
NOTE These systems are embedded or can be connected to a software application capable of consolidating data
and delivering automatic analysis. Automatic analysis can include calculation of energy baselines or energy
performance indicators as requested for the energy management system required by ISO 50001, or can be used
during energy audits as defined in ISO 50002, or can be used for monitoring an installation complying with
IEC 60364-8-1. These devices can also be used for certification according to labels such as LEED, BREEAM , HQE,
etc.
This standard does not cover:
• devices used only in the consumer market (living quarters) or household;
• devices used in the smart metering infrastructure (e.g. smart meters);
• devices used in the smart grid infrastructure;
• devices used as IT servers in the information technology business;
• power metering and monitoring devices: PMD with additional functions (e.g. energy data
logger function);
• I/O data concentrators already covered by a specific product standard;
• communication protocols and interoperability;
• power quality instruments (PQI);
• software used for the data collection and analysis of the power quality for the supply side.
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 60068-2-1, Environmental testing – Part 2-1: Tests – Test A: Cold
IEC 60068-2-2, Environmental testing – Part 2-2: Tests – Tests B: Dry heat

– 8 – IEC 62974-1:2017 © IEC 2017
IEC 60068-2-14, Environmental testing – Part 2-14 – Tests – Test N: Change of temperature
IEC 60068-2-78, Environmental testing – Part 2-78 – Tests – Test Cab: Damp heat, steady
state
IEC 60529, Degrees of protection provided by enclosures (IP Code)
IEC 60721-3-1, Classification of environmental conditions – Part 3: Classification of groups of
environmental parameters and their severities – Section 1: Storage
IEC 60721-3-2, Classification of environmental conditions – Part 3: Classification of groups of
environmental parameters and their severities – Section 2: Transportation
IEC 60721-3-3, Classification of environmental conditions – Part 3: Classification of groups of
environmental parameters and their severities – Section 3: Stationary use at weatherprotected
locations
IEC 61000-4-5, Electromagnetic compatibility (EMC) – Part 4-5: Testing and measurement
techniques – Surge immunity test
IEC 61000-4-8, Electromagnetic compatibility (EMC) – Part 4-8: Testing and measurement
techniques – Testing and measurement techniques – Power frequency magnetic field
immunity test
IEC 61000-4-11, Electromagnetic compatibility (EMC) – Part 4-11: Testing and measurement
techniques – Voltage dips, short interruptions and voltage variations immunity tests
IEC 61010 (all parts), Safety requirements for electrical equipment for measurement, control,
and laboratory use
IEC 61131-2:2003, Programmable controllers – Part 2: Equipment requirements and tests
IEC 61326-1, Electrical equipment for measurement, control and laboratory use – EMC
requirements – Part 1: General requirements
IEC 62053-31, Electricity metering equipment (a.c.) – Particular requirements – Part 31: Pulse
output devices for electromechanical and electronic meters (two wires only)
IEC 62262, Degrees of protection provided by enclosures for electrical equipment against
external mechanical impacts (IK code)
3 Terms and definitions
For the purposes of this document, the following terms and definitions 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

IEC 62974-1:2017 © IEC 2017 – 9 –
3.1 General definitions
3.1.1
energy data
quantities related to the management of energy measured in industrial, commercial and
similar plants, including energy consumption, relevant variables and electrical parameters
Note 1 to entry: Energy consumption refers to the various forms of energy (electricity, fossil fuels, steam, heat,
compressed air, etc.).
Note 2 to entry: Electrical parameters refer to P, U, I, PF, THD, harmonics, etc., which can also be monitored.
3.1.2
relevant variable
quantifiable factor that impacts energy performance and routinely changes
EXAMPLE: Production parameters (production, volume, production rate, etc.); weather conditions (outdoor
temperature, degree days, etc.); operating hours; operating parameters (operational temperature, light level, etc.).
[SOURCE: ISO 50006:2014, 3.14]
3.1.3
energy baseline
EnB
quantified reference(s) providing a basis for comparison of energy performance
Note 1 to entry: An energy baseline can be normalized using va
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