Surface cleaning appliances - Part 5: High pressure cleaners and steam cleaners for household and commercial use - Methods for measuring performance

IEC 62885-5:2018 lists the characteristic performance parameters for high pressure cleaners and steam cleaners in accordance with IEC 60335-2-79.
The intent is to serve the manufacturers in describing parameters that fit in their manuals and in their literature. This can include all or some of the parameters listed in this definition document.

Appareils de nettoyage des surfaces – Partie 5: Appareils de nettoyage à haute pression et appareils de nettoyage à vapeur à usage domestique et commercial – Méthodes de mesure de l'aptitude à la fonction

L’IEC 62885-5:2018 donne la liste des paramètres caractéristiques d'aptitude à la fonction pour les appareils de nettoyage à haute pression et les appareils de nettoyage à vapeur selon l'IEC 60335-2-79.
Elle est destinée aux fabricants pour la description des paramètres qui rentrent dans leurs manuels et leurs documentations. Ces paramètres peuvent inclure tout ou partie des paramètres dont la liste est donnée dans le présent document de définition.

Electromagnetic compatibilty (EMC) – Part 2: Environment – Section 7: Low frequency magnetic fields in various environments

General Information

Status
Published
Publication Date
28-Aug-2018
Current Stage
PPUB - Publication issued
Start Date
17-Aug-2018
Completion Date
29-Aug-2018

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IEC 62885-5 ®
Edition 1.0 2018-08
INTERNATIONAL
STANDARD
Surface cleaning appliances –
Part 5: High pressure cleaners and steam cleaners for household and
commercial use – Methods for measuring performance

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
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.

IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing 21 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.

IEC publications search - webstore.iec.ch/advsearchform IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a 67 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and

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Centre: sales@iec.ch.
IEC 62885-5 ®
Edition 1.0 2018-08
INTERNATIONAL
STANDARD
Surface cleaning appliances –
Part 5: High pressure cleaners and steam cleaners for household and

commercial use – Methods for measuring performance

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 97.080 ISBN 978-2-8322-5969-6

– 2 – IEC 62885-5:2018 © IEC 2018
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 General conditions for testing . 5
4.1 Atmospheric conditions . 5
4.2 Test equipment and materials . 6
4.2.1 Cold and hot water high pressure cleaner . 6
4.3 Voltage and frequency . 6
4.4 Equipment of the high pressure cleaner . 6
4.5 Operation of the high pressure cleaner . 6
4.6 Number of samples . 7
5 High pressure cleaner efficiency tests . 7
5.1 Cleaning efficiency of cold-water high pressure cleaners . 7
5.2 Cleaning efficiency of hot-water high pressure cleaners . 7
5.3 Efficiency tests of oil-heated high pressure cleaners . 7
5.3.1 General . 7
5.3.2 Thermal exhaust loss of oil fired high pressure cleaner . 7
5.3.3 Determination CO emissions of oil-heated high pressure cleaner . 8
5.3.4 Determination dust emissions of oil-heated high pressure cleaners . 9
6 Productivity . 10
Annex A (informative) Realistic productivity . 11
Bibliography . 12

Table 1 – Measurement tolerances for the measuring device . 8
Table 2 – Measurement tolerances during the measurement . 8
Table 3 – Definition of the different figures . 9

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SURFACE CLEANING APPLIANCES –
Part 5: High pressure cleaners and steam cleaners for household
and commercial use – Methods for measuring performance

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 62885-5 has been prepared by subcommittee SC 59F: Surface
cleaning appliances, of IEC technical committee TC 59: Performance of household and similar
electrical appliances.
The text of this International Standard is based on the following documents:
CDV Report on voting
59F/340/CDV 59F/348/RVC
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.

– 4 – IEC 62885-5:2018 © IEC 2018
A list of all parts in the IEC 62885 series, published under the general title Surface cleaning
appliances, can be found on the IEC website.
In this standard, the following print types are used:
• terms defined in Clause 3 of IEC 60335-2-79:2016: Arial bold.
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.
A bilingual version of this publication may be issued at a later date.

SURFACE CLEANING APPLIANCES –
Part 5: High pressure cleaners and steam cleaners for household
and commercial use – Methods for measuring performance

1 Scope
This part of IEC 62885 lists the characteristic performance parameters for high pressure
cleaners and steam cleaners in accordance with IEC 60335-2-79.
The intent is to serve the manufacturers in describing parameters that fit in their manuals and
in their literature. This can include all or some of the parameters listed in this definition
document.
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 60335-2-79:2016, Household and similar electrical appliances – Safety – Part 2-79:
Particular requirements for high pressure cleaners and steam cleaners
ISO 22968, Forced draught oil burners
3 Terms and definitions
For the purpose of this document, the terms and definitions given in IEC 60335-2-79 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
4 General conditions for testing
4.1 Atmospheric conditions
Where required, the test procedures and measurements shall be carried out under the
following conditions:
Standard atmosphere:  23/50
Temperature: (23 ± 2) °C
Relative humidity: (50 ± 5) %
Air pressure: 86 kPa to 106 kPa
NOTE Temperature and humidity conditions within the specified ranges are required for good repeatability and
reproducibility. Care should be taken to avoid changes during a test.

– 6 – IEC 62885-5:2018 © IEC 2018
4.2 Test equipment and materials
4.2.1 Cold and hot water high pressure cleaner
During testing, the machine shall be operated at rated voltage, and shall be used in
accordance with normal operation as defined in IEC 60335-2-79 and with the manufacturer’s
specifications, unless otherwise specified in this clause. The operation shall be stable and
smooth. In particular, the following conditions shall apply:
• The spraying device shall be held without tension, with a downwards angle of 45° ± 5°,
spraying the water jet to the atmosphere without working towards any barrier. Gloves shall
not be used unless required as PPE owing to the manufacturer’s instructions.
• The hand position of the second hand shall be as displayed in Figure DD.5 of
IEC 60335-2-79:2016.
• A pulsation dampener shall not be used, as far as possible. If a pulsation dampener is
unchangeably fixed to the machine, this fact shall be reported.
• The length of the hose line shall be not more than 10 m. If the standard length according
to the manufacturer’s instructions is more than 10 m, the standard hose may be used; in
this case the length shall be reported. The type of the hose line shall be reported.
• The nominal diameter sha
...


IEC 62885-5 ®
Edition 1.0 2018-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Surface cleaning appliances –
Part 5: High pressure cleaners and steam cleaners for household and
commercial use – Methods for measuring performance

Appareils de nettoyage des surfaces –
Partie 5: Appareils de nettoyage à haute pression et appareils de nettoyage à
vapeur à usage domestique et commercial – Méthodes de mesure de l'aptitude à
la fonction
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
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

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et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.

IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing 21 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.

IEC publications search - webstore.iec.ch/advsearchform IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a 67 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and

CISPR.
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Centre: sales@iec.ch.
A propos de l'IEC
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IEC 62885-5 ®
Edition 1.0 2018-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Surface cleaning appliances –
Part 5: High pressure cleaners and steam cleaners for household and

commercial use – Methods for measuring performance

Appareils de nettoyage des surfaces –

Partie 5: Appareils de nettoyage à haute pression et appareils de nettoyage à

vapeur à usage domestique et commercial – Méthodes de mesure de l'aptitude à

la fonction
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 97.080 ISBN 978-2-8322-6239-9

– 2 – IEC 62885-5:2018 © IEC 2018
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 General conditions for testing . 5
4.1 Atmospheric conditions . 5
4.2 Test equipment and materials . 6
4.2.1 Cold and hot water high pressure cleaner . 6
4.3 Voltage and frequency . 6
4.4 Equipment of the high pressure cleaner . 6
4.5 Operation of the high pressure cleaner . 6
4.6 Number of samples . 7
5 High pressure cleaner efficiency tests . 7
5.1 Cleaning efficiency of cold-water high pressure cleaners . 7
5.2 Cleaning efficiency of hot-water high pressure cleaners . 7
5.3 Efficiency tests of oil-heated high pressure cleaners . 7
5.3.1 General . 7
5.3.2 Thermal exhaust loss of oil fired high pressure cleaner . 7
5.3.3 Determination CO emissions of oil-heated high pressure cleaner . 8
5.3.4 Determination dust emissions of oil-heated high pressure cleaners . 9
6 Productivity . 10
Annex A (informative) Realistic productivity . 11
Bibliography . 12

Table 1 – Measurement tolerances for the measuring device . 8
Table 2 – Measurement tolerances during the measurement . 8
Table 3 – Definition of the different figures . 9

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SURFACE CLEANING APPLIANCES –
Part 5: High pressure cleaners and steam cleaners for household
and commercial use – Methods for measuring performance

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 62885-5 has been prepared by subcommittee SC 59F: Surface
cleaning appliances, of IEC technical committee TC 59: Performance of household and similar
electrical appliances.
This bilingual version (2018-11) corresponds to the monolingual English version, published in
2018-08.
The text of this International Standard is based on the following documents:
CDV Report on voting
59F/340/CDV 59F/348/RVC
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.

– 4 – IEC 62885-5:2018 © IEC 2018
The French version of this standard has not been voted upon.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 62885 series, published under the general title Surface cleaning
appliances, can be found on the IEC website.
In this standard, the following print types are used:
• terms defined in Clause 3 of IEC 60335-2-79:2016: Arial bold.
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
...


SLOVENSKI STANDARD
01-april-1999
Electromagnetic compatibilty (EMC) – Part 2: Environment – Section 7: Low
frequency magnetic fields in various environments
Electromagnetic compatibility (EMC) - Part 2: Environment - Section 7: Low frequency
magnetic fields in various environments
Compatibilité électromagntique (CEM) - Partie 2: Environnement - Section 7: Champs
magnétiques basse fréquence en environnements divers
Ta slovenski standard je istoveten z: IEC/TR 61000-2-7
ICS:
33.100.99 Drugi vidiki v zvezi z EMC Other aspects related to
EMC
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

RAPPORT
CEI
TECHNIQUE – TYPE 3
IEC
61000-2-7
TECHNICAL
Première édition
REPORT – TYPE 3
First edition
1998-01
Compatibilité électromagnétique (CEM) –
Partie 2:
Environnement –
Section 7: Champs magnétiques basse fréquence
en environnements divers
Electromagnetic compatibility (EMC) –
Part 2:
Environment –
Section 7: Low frequency magnetic fields
in various environments
 IEC 1998 Droits de reproduction réservés  Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
utilisée sous quelque forme que ce soit et par aucun any form or by any means, electronic or mechanical,
procédé, électronique ou mécanique, y compris la photo- including photocopying and microfilm, without permission in
copie et les microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http: //www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale
PRICE CODE V
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue

61000-2-7 © IEC:1998 – 3 –
CONTENTS
Page
FOREWORD . 5
INTRODUCTION . 9
Clause
1 Scope. 11
2 Normative reference. 11
3 Units. 11
4 Natural phenomena. 13
5 Power supply system environments – Power frequency magnetic fields . 21
5.1 Overhead lines. 21
5.1.1 AC, three-phase lines . 21
5.1.2 HVDC lines. 29
5.2 Underground cables. 31
5.2.1 Single-conductor cables. 31
5.2.2 Multi-conductor cables . 35
5.3 Power supply authorities' medium and high voltage premises . 37
5.4 Power supply authorities' low voltage premises . 41
6 Traction system environment . 43
7 Industrial environment. 47
7.1 Welding equipment. 47
7.2 Steel furnaces. 49
7.3 Industrial equipment in general use. 51
8 Commercial office environment . 53
9 Residential environment – Household appliances . 55
9.1 Internal wiring in residential buildings. 55
9.2 Residential appliances. 57
10 Hospital environment. 61
10.1 General. 61
10.2 Treatment of patients. 61
10.3 Ward areas . 63
11 Summary and comparisons of the magnetic fields produced by various sources . 63
12 Bibliography. 69

61000-2-7 © IEC:1998 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
ELECTROMAGNETIC COMPATIBILITY (EMC) –
Part 2: Environment –
Section 7: Low frequency magnetic fields
in various environments
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical reports or guides and they are accepted by the National Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
The main task of IEC technical committees is to prepare International Standards. In
exceptional circumstances, a technical committee may propose the publication of a technical
report of one of the following types:
• type 1, when the required support cannot be obtained for the publication of an
International Standard, despite repeated efforts;
• type 2, when the subject is still under technical development or where for any other
reason there is the future but no immediate possibility of an agreement on an International
Standard;
• type 3, when a technical committee has collected data of a different kind from that
which is normally published as an International Standard, for example "state of the art".
Technical reports of types 1 and 2 are subject to review within three years of publication to
decide whether they can be transformed into International Standards. Technical reports of
type 3 do not necessarily have to be reviewed until the data they provide are considered to be
no longer valid or useful.
IEC 61000-2-7, which is a technical report of type 3, has been prepared by subcommittee 77A:
Low frequency phenomena, of IEC technical committee 77: Electromagnetic Compatibility.

61000-2-7 © IEC:1998 – 7 –
The text of this technical report is based on the following documents:
Committee draft Report on voting
77A/134/CDV 77A/151A/RVC
Full information on the voting for the approval of this technical report can be found in the report
on voting indicated in the above table.
This document is issued in the type 3 technical report series of publications (according to
G.3.2.3 of part 1 of the IEC/ISO Directives) as a purely informative document.
This document is not to be regarded as an International Standard.

61000-2-7 © IEC:1998 – 9 –
INTRODUCTION
IEC 61000 is published in separate parts according to the following structure:
Part 1: General
General considerations (introduction, fundamental principles)
Definitions, terminology
Part 2: Environment
Description of the environment
Classification of the environment
Compatibility levels
Part 3: Limits
Emission limits
Immunity limits (in so far as they do not fall under responsibility of product
committees)
Part 4: Testing and measurement techniques
Measurement techniques
Testing techniques
Part 5: Installation and mitigation guidelines
Installation guidelines
Mitigation methods and devices
Part 6: Generic standards
Part 9: Miscellaneous
Each part is further subdivided into sections which are to be published either as International
Standards or as technical reports.
These standards and reports will be published in chronological order and numbered
accordingly.
This section is a technical report of type 3.

61000-2-7 © IEC:1998 – 11 –
ELECTROMAGNETIC COMPATIBILITY (EMC) –
Part 2: Environment –
Section 7: Low frequency magnetic fields
in various environments
1 Scope
Interest in magnetic fields has been stimulated in recent years by concern over the
physiological effects they may have on humans and animals and the deleterious effects they
have on the performance of some electrical equipment, particularly video display units.
Investigations have yielded results which are presented in this report as reference values.
Note 1 – The European Union EMC Directive has prompted magnetic field measurements, particularly in respect of
the commercial office environments associated with supply authority substations and electrical distribution systems
within buildings. Supply authorities have sponsored most of the work and the results are generally within the
frequency range of 50 Hz to 2 kHz, and presented as r.m.s. values. There is, however, a need to have some
knowledge about d.c. fields and the fields up to 150 kHz as they may interfere with some types of equipment.
Note 2 – Most of the magnetic field data in this report is associated with sinusoidal current sources and r.m.s.
values may be assumed unless otherwise stated.
Power supply systems operating at voltages less than or equal to 1 000 V are designated low-voltage, those above
1 000 V and up to 35 kV are designated medium-voltage, and those in excess of 35 kV are designated high-voltage.
2 Normative reference
The following normative document contains provisions which, through reference in this text,
constitute provisions of this technical report. At the time of publication, the edition indicated
was valid. All normative documents are subject to revision, and parties to agreements based
on this technical report are encouraged to investigate the possibility of applying the most recent
edition of the normative document indicated below. Members of IEC and ISO maintain registers
of currently valid International Standards.
IEC 60050(161):1990, International Electrotechnical Vocabulary (IEV) – Chapter 161: Electro-
magnetic compatibility.
3 Units
Magnetic field values in this report are either expressed in field strengths of amperes per
metre, A/m, or in flux densities of microtesla, μT. Where the older flux density unit of
milligauss, mG, has appeared in reference documents it has been converted to μT by the
following relationship:
1 μT = 10 mG ≈ 0,796 A/m
The following units are applied in the present report:
Magnetic field strength: H in A/m
Magnetic flux density: B = μ × H in T (Tesla)
–6
whereby the permeability μ =μ × μ and μ = 1,256⋅10 (Wb/Am)
r 0 0
in air the relative permeability μ = 1 and B (μT) = 1,256 H (A/m)
r
4 –9
NOTE – 1 T = 1 Wb/m = 10 G and B = 1,256·10 G (in air)

61000-2-7 © IEC:1998 – 13 –
Example: Magnetic field of a single conductor
The relationship between the magnetic field strength and magnetic induction at a distance d
from a single conductor carrying a current I is given by the following expressions:
I
H = (A/m)
2πd
I
B = 1,256 (μT)
2dπ
I
d
IEC  1 527/97
An alternating current produces an alternating magnetic field, and in the case of a multi-phase
cable or overhead line, the alternating magnetic field rotates as it results from the vector sum
of the fields produced by individual phase currents.
An alternating magnetic field will induce an electromotive force in any electrical conductor to
which it is exposed. This effect is utilised by meters which have search coils. Such meters are
in common use.
Other types of meter used for low frequency measurements utilise the Hall effect. These
meters are not so good for measuring the fields from environmental sources, but they are very
useful when measuring points in space and static magnetic fields.
4 Natural phenomena
Three kinds of natural magnetic fields have to be considered:
– the earth
...

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