SIST EN IEC 62822-1:2018

Assessment of electric welding equipment related to restrictions of human exposure to electromagnetic fields (0 Hz - 300 GHz) - Part 1: Product family standard (IEC 62822-1:2016)

This part of IEC 62822, which is a product family standard, applies to equipment for
resistance welding, arc welding and allied processes designed for occupational use by
professionals and for use by laymen.
NOTE 1 Typical allied processes are resistance hard and soft soldering, resistance heating by means comparable
to resistance welding equipment, electric arc cutting and arc spraying.
The frequency range covered is 0 Hz to 300 GHz.
This product family standard specifies assessment methods and criteria to evaluate
electromagnetic field (EMF) emissions of electric welding equipment with regard to national
and international requirements for human exposure to EMF.
NOTE 2 Magnetic fields generated by the operation of welding equipment and the resulting non-thermal effects
are the main assessment concern.
This product family standard does not define requirements and methods for workplace
assessment regarding the risks arising from electromagnetic fields. However, the EMF
exposure data that results from the application of this product family standard can be used to
assist in workplace assessment.
NOTE 3 The equipment manufacturer is unaware of the overall exposure environment in which the equipment will
be used (e.g. multiple sources) and is not responsible for all requirements for workplace assessment (e.g.
information and training of workers, design and layout of the workplace).
Other standards may apply to products covered by this standard. In particular this standard
cannot be used to demonstrate electromagnetic compatibility with other equipment. It does
not specify any product safety requirements other than those specifically related to human
exposure to electromagnetic fields.

Elektrische Schweißeinrichtungen - Bewertung in Bezug auf Begrenzungen der Exposition von Personen gegenüber elektromagnetischen Feldern (0 Hz bis 300 GHz) - Teil 1: Produktfamiliennorm

Matériels de soudage électrique - Évaluation des restrictions relatives à l'exposition humaine aux champs électromagnétiques (0 Hz à 300 GHz) - Partie 1: Norme de famille de produits

L'IEC 62822-1:2016, qui est une norme de famille de produits s'applique aux matériels de soudage par résistance, de soudage à l'arc et techniques connexes conçus pour un usage professionnel et non professionnel.

Ocenjevanje električne varilske opreme z vidika omejitev izpostavljenosti delavcev električnim in magnetnim poljem (0 Hz - 300 GHz) - 1. del: Standard za družino izdelkov (IEC 62822-1:2016)

Ta del standarda IEC 62822 iz skupine standardov za proizvode se uporablja za opremo za uporovno varjenje, obločno varjenje in sorodne postopke, zasnovano za uporabo pri delu strokovnjakov in laikov.
OPOMBA 1: Običajni povezani procesi so uporovno trdo ali mehko spajkanje, uporovno gretje na način, primerljiv z opremo za uporovno varjenje, električno obločno rezanje in brizganje.
Zajet frekvenčni razpon je od 0 Hz do 300 GHz. Ta standard iz skupine standardov za proizvode določa metode in merila za ocenjevanje emisij elektromagnetnega polja (EMF) električne opreme za varjenje v povezavi z nacionalnimi ter mednarodnimi zahtevami glede izpostavljenosti oseb elektromagnetnemu polju.
OPOMBA 2: Glavni predmet ocenjevanja so magnetna polja, ki se ustvarijo pri delovanju varilne opreme, in posledični učinki, ki niso vezani na toploto.
Ta standard iz skupine standardov za proizvode ne določa zahtev in metod za oceno delovnega mesta v povezavi s tveganji zaradi elektromagnetnih polj. Vendar se podatki o izpostavljenosti elektromagnetnemu polju, ki se pridobijo na podlagi uporabe tega standarda iz skupine standardov za proizvode, lahko uporabijo kot pomoč pri ocenjevanju delovnega mesta.
OPOMBA 3: Proizvajalec opreme ne pozna celotnega okolja izpostavljenosti, v katerem bo oprema uporabljena (npr. več virov) in ni odgovoren za vse zahteve za ocenjevanje delovnega mesta (npr. informacije in usposabljanje delavcev, zasnova in postavitev delovnega mesta).
Za proizvode, ki jih obravnava ta standard, se lahko uporabljajo drugi standardi. Ta standard se ne uporablja za dokazovanje elektromagnetne združljivosti z drugo opremo. Ne določa nobenih varnostnih zahtev za proizvode, razen tistih, ki se posebej navezujejo na izpostavljenost delavcev elektromagnetnim poljem.

General Information

• Status: Published
• Publication Date: 08-Oct-2018
• ICS: 17.220.01 - Electricity. Magnetism. General aspects
• ICS: 25.160.30 - Welding equipment
• Technical Committee: I09 - Imaginarni 09
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 04-Oct-2018
• Due Date: 09-Dec-2018
• Completion Date: 09-Oct-2018
• Directive: 2013/35/EU - Directive 2013/35/EU of the European Parliament and of the Council of 26 June 2013 on the minimum health and safety requirements regarding the exposure of workers to the risks arising from physical agents (electromagnetic fields) (20th individual Directive within the meaning of Article 16(1) of Directive 89/391/EEC) and repealing Directive 2004/40/EC
• Ref Project: EN IEC 62822-1:2018 - Electric welding equipment - Assessment of restrictions related to human exposure to electromagnetic fields (0 Hz to 300 GHz) - Part 1: Product family standard

Relations

• Revised: SIST EN 50445:2008 - Product family standard to demonstrate compliance of equipment for resistance welding, arc welding and allied processes with the basic restrictions related to human exposure to electromagnetic fields (0 Hz - 300 GHz)
• Effective Date: 18-Oct-2016
• Replaces: SIST EN 50445:2008 - Product family standard to demonstrate compliance of equipment for resistance welding, arc welding and allied processes with the basic restrictions related to human exposure to electromagnetic fields (0 Hz - 300 GHz)
• Effective Date: 07-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN IEC 62822-1:2018
01-december-2018
1DGRPHãþD
SIST EN 50445:2008
2FHQMHYDQMHHOHNWULþQHYDULOVNHRSUHPH]YLGLNDRPHMLWHYL]SRVWDYOMHQRVWLGHODYFHY
HOHNWULþQLPLQPDJQHWQLPSROMHP+]*+]GHO6WDQGDUG]DGUXåLQR
L]GHONRY,(&
Assessment of electric welding equipment related to restrictions of human exposure to
electromagnetic fields (0 Hz - 300 GHz) - Part 1: Product family standard (IEC 62822-
1:2016)
Ta slovenski standard je istoveten z: EN IEC 62822-1:2018
ICS:
17.220.01 Elektrika. Magnetizem. Electricity. Magnetism.
Splošni vidiki General aspects
25.160.30 Varilna oprema Welding equipment
SIST EN IEC 62822-1:2018 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST EN IEC 62822-1:2018

---------------------- Page: 2 ----------------------

SIST EN IEC 62822-1:2018


EUROPEAN STANDARD EN IEC 62822-1

NORME EUROPÉENNE

EUROPÄISCHE NORM
September 2018
ICS 25.160; 25.160.30 Supersedes EN 50445:2008
English Version
Electric welding equipment - Assessment of restrictions related
to human exposure to electromagnetic fields (0 Hz to 300 GHz) -
Part 1: Product family standard
(IEC 62822-1:2016 , modified)
Matériels de soudage électrique - Évaluation des Bewertung elektrischer Schweißeinrichtungen in Bezug auf
restrictions relatives à l'exposition humaine aux champs Begrenzungen der Exposition von Personen gegenüber
électromagnétiques (0 Hz à 300 GHz) - Partie 1: Norme de elektromagnetischen Feldern (0 Hz bis 300 GHz) - Teil 1:
famille de produits Produktfamiliennorm
(IEC 62822-1:2016 , modifiée) (IEC 62822-1:2016 , modifiziert)
This European Standard was approved by CENELEC on 2016-03-21. 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: Rue de la Science 23, B-1040 Brussels
© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN IEC 62822-1:2018 E

---------------------- Page: 3 ----------------------

SIST EN IEC 62822-1:2018
EN IEC 62822-1:2018 (E)
European foreword
The text of document 26/583/FDIS, future edition 1 of IEC 62822-1, prepared by IEC/TC 26 "Electric
welding" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
EN IEC 62822-1:2018.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2019-06-28
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2021-09-28
document have to be withdrawn

This document supersedes EN 50445:2008.
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.
This document has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association.
Endorsement notice
The text of the International Standard IEC 62822-1:2016 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 62822-2 NOTE Harmonized as EN 62822-2.


2

---------------------- Page: 4 ----------------------

SIST EN IEC 62822-1:2018
EN IEC 62822-1:2018 (E)
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications
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.
NOTE 1  Where 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 60050-851 2008 International Electrotechnical Vocabulary - - -
Part 851: Electric welding
IEC 60974-1 -  Arc welding equipment -- Part 1: Welding EN 60974-1 -
power sources
IEC 60974-2 -  Arc welding equipment -- Part 2: Liquid EN 60974-2 -
cooling systems
IEC 60974-5 -  Arc welding equipment -- Part 5: Wire EN 60974-5 -
feeders
IEC 60974-6 -  Arc welding equipment -- Part 6: Limited EN 60974-6 -
duty equipment
IEC 60974-8 -  Arc welding equipment -- Part 8: Gas EN 60974-8 -
consoles for welding and plasma cutting
systems
IEC 62135-1 -  Resistance welding equipment -- Part 1: - -
Safety requirements for design,
manufacture and installation
IEC 62311 -  Assessment of electronic and electrical EN 62311 -
equipment related to human exposure
restrictions for electromagnetic fields (0 Hz
- 300 GHz)
IEC 62822-2 -  Electric welding equipment - Assessment EN 62822-2 -
of restrictions related to human exposure
to electromagnetic fields (0 Hz to 300 GHz)
- Part 2: Arc welding equipment

3

---------------------- Page: 5 ----------------------

SIST EN IEC 62822-1:2018

---------------------- Page: 6 ----------------------

SIST EN IEC 62822-1:2018



IEC 62822-1

®


Edition 1.0 2016-03




INTERNATIONAL



STANDARD




NORME



INTERNATIONALE











Electric welding equipment – Assessment of restrictions related to human

exposure to electromagnetic fields (0 Hz to 300 GHz) –

Part 1: Product family standard




Matériels de soudage électrique – Évaluation des restrictions relatives à

l'exposition humaine aux champs électromagnétiques (0 Hz à 300 GHz) –


Partie 1: Norme de famille de produits













INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 25.160; 25.160.30 ISBN 978-2-8322-3269-9



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: 7 ----------------------

SIST EN IEC 62822-1:2018
– 2 – IEC 62822-1:2016 © IEC 2016
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references. 6
3 Terms and definitions . 7
4 Requirements . 8
4.1 General . 8
4.2 Non-thermal effects due to magnetic fields . 9
4.2.1 Limits for equipment used by laymen . 9
4.2.2 Limits for occupational use by professionals . 9
4.3 Non-thermal effects due to electric fields . 9
4.4 Contact currents . 9
4.5 Non-thermal effects of output current ripple . 9
4.6 Thermal effects . 10
5 Assessment methods . 10
5.1 General . 10
5.2 Time averaging . 11
5.3 Spatial averaging . 11
5.4 Assessment of equipment with pulsed or non-sinusoidal welding current . 11
5.5 Uncertainty of assessment . 11
5.5.1 Using uncertainty for comparison with permissible values . 11
5.5.2 Permissible expanded uncertainties . 12
6 Assessment conditions . 12
6.1 Assessment configurations . 12
6.2 Welding current conditions . 13
6.2.1 General . 13
6.2.2 Single operating mode . 13
6.2.3 Multiple operating modes . 13
6.2.4 Worst case condition . 13
7 Instructions and marking . 14
7.1 Product documentation requirements . 14
7.1.1 Information on product classification . 14
7.1.2 Information on the applied limits . 14
7.1.3 Information on exposure indices . 14
7.1.4 Information on distances . 14
7.1.5 Information on exceeding reference levels . 14
7.1.6 Information on exceeding sensory effect limits . 15
7.1.7 Exposure of persons wearing cardiac pacemakers or other medical
implants . 15
7.1.8 Projectile risk . 15
7.1.9 General information . 15
7.2 Product marking requirements . 15
Annex A (informative) EU legislation . 16
A.1 Restrictions for occupational exposure. 16
A.1.1 General . 16
A.1.2 Basic restrictions . 16
A.1.3 Reference levels . 17

---------------------- Page: 8 ----------------------

SIST EN IEC 62822-1:2018
IEC 62822-1:2016 © IEC 2016 – 3 –
A.2 Restrictions for general public exposure . 17
A.2.1 General . 17
A.2.2 Basic restrictions . 17
A.2.3 Reference levels . 18
A.3 Non-sinusoidal or pulsed fields . 19
Annex B (informative) ICNIRP guidelines . 20
B.1 Restrictions for occupational exposure. 20
B.1.1 General . 20
B.1.2 Basic restrictions . 20
B.1.3 Reference levels . 21
B.2 Restrictions for general public exposure . 21
B.2.1 General . 21
B.2.2 Basic restrictions . 21
B.2.3 Reference levels . 22
B.3 Non-sinusoidal and pulsed fields . 23
Annex C (informative) IEEE standards . 24
C.1 Restrictions for occupational exposure. 24
C.1.1 General . 24
C.1.2 Basic restrictions . 24
C.1.3 Reference levels . 25
C.2 Restrictions for general public exposure . 25
C.2.1 General . 25
C.2.2 Basic restrictions . 25
C.2.3 Reference levels . 26
C.3 Non-sinusoidal and pulsed fields . 27
Annex D (informative) Example for general EMF information . 28
Bibliography . 29

Table 1 – Permissible expanded uncertainties . 12
Table A.1 – EU occupational basic restrictions (0 Hz to 10 MHz). 16
Table A.2 – EU occupational reference levels (1 Hz to 10 MHz) . 17
Table A.3 – EU general public basic restrictions (0 Hz to 10 MHz) . 18
Table A.4 – EU general public reference levels (0 Hz to 10 MHz) . 18
Table A.5 – EU summation parameters . 19
Table B.1 – ICNIRP occupational basic restrictions (0 Hz to 10 MHz) . 20
Table B.2 – ICNIRP occupational reference levels (1 Hz to 10 MHz) . 21
Table B.3 – ICNIRP general public basic restrictions (0 Hz to 10 MHz) . 22
Table B.4 – ICNIRP general public reference levels (1 Hz to 10 MHz) . 22
Table B.5 – ICNIRP summation parameters . 23
Table C.1 – IEEE occupational basic restrictions (0 Hz to 5 MHz) . 24
Table C.2 – IEEE occupational reference levels (0 Hz to 5 MHz) . 25
Table C.3 – IEEE general public basic restrictions (0 Hz to 5 MHz) . 26
Table C.4 – IEEE general public reference levels (0 Hz to 5 MHz) . 26

---------------------- Page: 9 ----------------------

SIST EN IEC 62822-1:2018
– 4 – IEC 62822-1:2016 © IEC 2016
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

ELECTRIC WELDING EQUIPMENT –
ASSESSMENT OF RESTRICTIONS RELATED TO HUMAN
EXPOSURE TO ELECTROMAGNETIC FIELDS (0 Hz to 300 GHz) –

Part 1: Product family standard

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 62822-1 has been prepared by IEC technical committee 26:
Electric welding.
The text of this standard is based on the following documents:
FDIS Report on voting
26/583/FDIS 26/590/RVD

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

---------------------- Page: 10 ----------------------

SIST EN IEC 62822-1:2018
IEC 62822-1:2016 © IEC 2016 – 5 –
This Standard has the status of a product family standard.
A list of all parts in the IEC 62822 series, published under the general title Electric welding
equipment – Assessment of restrictions related to human exposure to electromagnetic fields
(0 Hz to 300 GHz), can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

---------------------- Page: 11 ----------------------

SIST EN IEC 62822-1:2018
– 6 – IEC 62822-1:2016 © IEC 2016
ELECTRIC WELDING EQUIPMENT –
ASSESSMENT OF RESTRICTIONS RELATED TO HUMAN
EXPOSURE TO ELECTROMAGNETIC FIELDS (0 Hz to 300 GHz) –

Part 1: Product family standard



1 Scope
This part of IEC 62822, which is a product family standard, applies to equipment for
resistance welding, arc welding and allied processes designed for occupational use by
professionals and for use by laymen.
NOTE 1 Typical allied processes are resistance hard and soft soldering, resistance heating by means comparable
to resistance welding equipment, electric arc cutting and arc spraying.
The frequency range covered is 0 Hz to 300 GHz.
This product family standard specifies assessment methods and criteria to evaluate
electromagnetic field (EMF) emissions of electric welding equipment with regard to national
and international requirements for human exposure to EMF.
NOTE 2 Magnetic fields generated by the operation of welding equipment and the resulting non-thermal effects
are the main assessment concern.
This product family standard does not define requirements and methods for workplace
assessment regarding the risks arising from electromagnetic fields. However, the EMF
exposure data that results from the application of this product family standard can be used to
assist in workplace assessment.
NOTE 3 The equipment manufacturer is unaware of the overall exposure environment in which the equipment will
be used (e.g. multiple sources) and is not responsible for all requirements for workplace assessment (e.g.
information and training of workers, design and layout of the workplace).
Other standards may apply to products covered by this standard. In particular this standard
cannot be used to demonstrate electromagnetic compatibility with other equipment. It does
not specify any product safety requirements other than those specifically related to human
exposure to electromagnetic fields.
2 Normative references
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.
IEC 60050-851:2008, International Electrotechnical Vocabulary – Part 851: Electric welding
IEC 60974-1, Arc welding equipment – Part 1: Welding power sources
IEC 60974-2, Arc welding equipment – Part 2: Liquid cooling systems
IEC 60974-5, Arc welding equipment – Part 5: Wire feeders
IEC 60974-6, Arc welding equipment – Part 6: Limited duty equipment

---------------------- Page: 12 ----------------------

SIST EN IEC 62822-1:2018
IEC 62822-1:2016 © IEC 2016 – 7 –
IEC 60974-8, Arc welding equipment – Part 8: Gas consoles for welding and plasma cutting
systems
IEC 62135-1, Resistance welding equipment – Part 1: Safety requirements for design,
manufacture and installation
IEC 62311, Assessment of electronic and electrical equipment related to human exposure
restrictions for electromagnetic fields (0 Hz – 300 GHz)
IEC 62822-2, Electric welding equipment – Assessment of restrictions related to human
exposure to electromagnetic fields (0 Hz to 300 GHz) – Part 2: Arc welding equipment
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-851 on
electric welding, in IEC 60974-1, IEC 60974-6 and in IEC 62135-1, as well as the following,
apply.
3.1
basic restrictions
exposure limit values
restrictions on exposure to electric, magnetic and electromagnetic fields that are based
directly on established health effects and biological considerations
3.2
contact current
electric current that appears when a person comes into contact with an object that is exposed
to an electromagnetic field
3.3
exposure index
EI
result of the evaluation of exposure to (both sinusoidal and non-sinusoidal) EMF, expressed
as a fraction or percentage of the permissible values
Note 1 to entry: Fractions higher than 1 (100 %) represent exceeding the permissible values.
3.4
general public
individuals of all ages and of varying health conditions
Note 1 to entry: Varying ages and health conditions can increase the individuals´ susceptibilities to EMF.
3.5
general public exposure
the exposure of members of the general public to EMF
Note 1 to entry: In many cases, members of the general public are unaware of their exposure to EMF.
3.6
health effects
adverse effects, such as thermal heating or stimulation of nerve and muscle tissue as a result
of human exposure to EMF
3.7
layman
operator who does not weld in the performance of his profession and may have little or no
formal instruction in welding

---------------------- Page: 13 ----------------------

SIST EN IEC 62822-1:2018
– 8 – IEC 62822-1:2016 © IEC 2016
[SOURCE: IEC 60050-851:2008, 851-11-14, modified – "arc welding" was replaced by
"welding"]
3.8
non-thermal effects
the stimulation of muscles, nerves or sensory organs as a result of human exposure to EMF
3.9
occupational exposure
the exposure of workers to EMF at their workplaces, generally under known conditions, and
as a result of performing their regular or assigned job activities
Note 1 to entry: A worker is any person employed by an employer, including trainees and apprentices.
3.10
reference levels
action levels
directly measurable quantities, derived from basic restrictions, provided for practical exposure
assessment purposes
Note 1 to entry: Respect of the reference levels will ensure respect of the relevant basic restriction. If the
reference levels are exceeded, it does not necessarily follow that the basic restriction will be exceeded.
3.11
required minimum distance
distance from the source of EMF to various parts of the body to comply with applicable
regulations
3.12
sensory effects
transient disturbed sensory perceptions and minor changes in brain functions as a result of
human exposure to EMF
3.13
thermal effects
tissue heating through energy absorption in the tissue as a result of human exposure to EMF
4 Requirements
4.1 General
This standard does not include normative limits. Different guidelines and limit values may
apply in different regions and shall be used in conjunction with this standard. Annexes A, B
and C provide examples of regional or national limits.
Limits for exposure to electromagnetic fields are typically given as body internal metrics
directly related to biological effects like nerve stimulation or heating. These metrics cannot be
measured directly, therefore derived levels are given in measureable quantities for practical
exposure assessment purposes. If these conservative levels are met, the body internal limits
are not exceeded.
Different limits for general public or occupational exposure m
...