Electric welding equipment - Assessment of restrictions related to human exposure to electromagnetic fields (0 Hz to 300 Hz) - Part 3: Resistance welding equipment (IEC 62822-3:2017)

This part of IEC 62822 applies to equipment for resistance 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 or resistance heating achieved by means
comparable to resistance welding equipment.
This document specifies procedures for the assessment of human exposure to magnetic fields
produced by resistance welding equipment. It covers non-thermal biological effects in the
frequency range from 0 Hz to 10 MHz and defines standardized test scenarios.
NOTE 2 The general term "field" is used throughout this document for "magnetic field".
NOTE 3 For the assessment of exposure to electric fields and thermal effects, the methods specified in the
Generic Standard IEC 62311 or relevant basic standards apply.
This document does not define methods for workplace assessment regarding the risks arising
from electromagnetic fields (EMF). However, the EMF data that results from the application of
this Basic Standard can be used to assist in workplace assessment.
Other standards can apply to products covered by this document. In particular this document
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.
This document focuses on the use of coupling coefficients to assess the exposure to EMF.

Einrichtungen zum Widerstandsschweißen - Bewertung elektrischer Schweißeinrichtungen in Bezug auf Begrenzungen der Exposition von Personen gegenüber elektromagnetischen Feldern (0 Hz - 300 GHz) - Teil 3: Grundnorm für Widerstandsschweißeinrichtungen

Matériels de soudage électrique - Évaluation des restrictions relatives à l'exposition humaine aux champs électromagnétiques (0 Hz à 300 GHz) - Partie 3: Matériels de soudage par résistance (IEC 62822-3:2017)

L’IEC 62822-3:2017 s'applique aux matériels de soudage par résistance et techniques connexes conçus pour un usage professionnel et non professionnel. Le présent document spécifie les procédures d'évaluation de l'exposition humaine aux champs magnétiques générés par les matériels de soudage par résistance. Il couvre les effets biologiques non thermiques dans la plage de fréquences comprises entre 0 Hz et 10 MHz et définit des scénarios d'essai normalisés.

Električna varilna oprema - Ocenjevanje omejitev z vidika izpostavljenosti človeka elektromagnetnim poljem (od 0 Hz do 300 Hz) - 3. del: Oprema za uporovno varjenje (IEC 62822-3:2017)

Ta del standarda IEC 62822 se uporablja za opremo za uporovno varjenje in sorodne postopke, zasnovano za uporabo pri delu strokovnjakov in laikov.
OPOMBA 1: Običajni povezani procesi so uporovno trdo ali mehko spajkanje ali uporovno gretje, ki se doseže na način, primerljiv z opremo za uporovno varjenje.
Ta dokument določa postopke za oceno izpostavljenosti delavcev magnetnim poljem, ki jih ustvari oprema za uporovno varjenje. Obravnava atermične biološke vplive v frekvenčnem razponu od 0 Hz do 10 MHz in določa standardizirane preskusne scenarije.
OPOMBA 2: Splošni izraz »polje« se v tem dokumentu uporablja za »magnetno polje«.
OPOMBA 3: Za oceno izpostavljenosti električnim poljem in toplotnim vplivom se uporabljajo metode, podane v splošnem standardu IEC 62311 ali zadevnih osnovnih standardih.
Ta dokument ne določa metod za oceno delovnega mesta v povezavi s tveganji zaradi elektromagnetnih polj (EMF). Vendar se podatki o elektromagnetnih poljih, ki se pridobijo na podlagi uporabe tega osnovnega standarda, lahko uporabijo kot pomoč pri ocenjevanju delovnega mesta.
Za proizvode, ki jih obravnava ta dokument, se lahko uporabljajo drugi standardi. Tega dokumenta zlasti ni mogoče uporabljati 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.
Ta dokument se osredotoča na uporabo koeficientov spajanja za ocenjevanje izpostavljenosti elektromagnetnim poljem.

General Information

Status
Published
Publication Date
06-Mar-2018
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
21-Feb-2018
Due Date
28-Apr-2018
Completion Date
07-Mar-2018

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SLOVENSKI STANDARD
SIST EN IEC 62822-3:2018
01-april-2018
1DGRPHãþD
SIST EN 50505:2008

(OHNWULþQDYDULOQDRSUHPD2FHQMHYDQMHRPHMLWHY]YLGLNDL]SRVWDYOMHQRVWLþORYHND

HOHNWURPDJQHWQLPSROMHP RG+]GR+] GHO2SUHPD]DXSRURYQR
YDUMHQMH ,(&

Electric welding equipment - Assessment of restrictions related to human exposure to

electromagnetic fields (0 Hz to 300 Hz) - Part 3: Resistance welding equipment (IEC

62822-3:2017)

Matériels de soudage électrique - Évaluation des restrictions relatives à l'exposition

humaine aux champs électromagnétiques (0 Hz à 300 GHz) - Partie 3: Matériels de
soudage par résistance (IEC 62822-3:2017)
Ta slovenski standard je istoveten z: EN IEC 62822-3:2018
ICS:
13.280 Varstvo pred sevanjem Radiation protection
25.160.30 Varilna oprema Welding equipment
SIST EN IEC 62822-3:2018 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN IEC 62822-3:2018
---------------------- Page: 2 ----------------------
SIST EN IEC 62822-3:2018
EUROPEAN STANDARD EN IEC 62822-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2018
ICS 25.160.30 Supersedes EN 50505:2008
English Version
Electric welding equipment - Assessment of restrictions related
to human exposure to electromagnetic fields (0 Hz to 300 Hz) -
Part 3: Resistance welding equipment
(IEC 62822-3:2017)

Matériels de soudage électrique - Évaluation des Einrichtungen zum Widerstandsschweißen - Bewertung

restrictions relatives à l'exposition humaine aux champs elektrischer Schweißeinrichtungen in Bezug auf

électromagnétiques (0 Hz à 300 GHz) - Partie 3: Matériels Begrenzungen der Exposition von Personen gegenüber

de soudage par résistance elektromagnetischen Feldern (0 Hz - 300 GHz) - Teil 3:
(IEC 62822-3:2017) Grundnorm für Widerstandsschweißeinrichtungen
(IEC 62822-3:2017)

This European Standard was approved by CENELEC on 2017-10-20. 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 62822-3:2018 E
---------------------- Page: 3 ----------------------
SIST EN IEC 62822-3:2018
EN IEC 62822-3:2018 (E)
European foreword

The text of document 26/626A/FDIS, future edition 1 of IEC 62822-3, prepared by IEC/TC 26 "Electric

welding" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as

EN IEC 62822-3:2018.
The following dates are fixed:
(dop) 2018-08-16
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2021-02-16
standards conflicting with the
document have to be withdrawn
This document supersedes EN 50505:2008.

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.

Endorsement notice

The text of the International Standard IEC 62822-3:2017 was approved by CENELEC as a European

Standard without any modification.
---------------------- Page: 4 ----------------------
SIST EN IEC 62822-3:2018
EN IEC 62822-3:2018 (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 61786-1 - Measurement of DC magnetic, AC EN 61786-1 -
magnetic and AC electric fields from 1 Hz
to 100 kHz with regard to exposure of
human beings - Part 1: Requirements for
measuring instruments
IEC 61786-2 - Measurement of DC magnetic, AC - -
magnetic and AC electric fields from 1 Hz
to 100 kHz with regard to exposure of
human beings - Part 2: Basic standard for
measurements
IEC 62226-2-1 - Exposure to electric or magnetic fields in EN 62226-2-1 -
the low and intermediate frequency range -
Methods for calculating the current density
and internal electric field induced in the
human body -- Part 2-1: Exposure to
magnetic fields - 2D models
IEC 62822-1 - Electric welding equipment - Assessment EN 62822-1 -
of restrictions related to human exposure
to electromagnetic fields (0 Hz to 300 GHz)
- Part 1: Product family standard
---------------------- Page: 5 ----------------------
SIST EN IEC 62822-3:2018
---------------------- Page: 6 ----------------------
SIST EN IEC 62822-3:2018
IEC 62822-3
Edition 1.0 2017-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electric welding equipment – Assessment of restrictions related to human
exposure to electromagnetic fields (0 Hz to 300 GHz) –
Part 3: Resistance welding equipment
Matériels de soudage électrique – Évaluation des restrictions relatives à
l'exposition humaine aux champs électromagnétiques (0 Hz à 300 GHz) –
Partie 3: Matériels de soudage par résistance
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.160.30 ISBN 978-2-8322-4814-0

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 62822-3:2018
– 2 – IEC 62822-3:2017 © IEC 2017
CONTENTS

FOREWORD ........................................................................................................................... 5

1 Scope .............................................................................................................................. 7

2 Normative references ...................................................................................................... 7

3 Terms, definitions, quantities, units and constants ........................................................... 8

3.1 Terms and definitions .............................................................................................. 8

3.2 Quantities and units ................................................................................................ 9

3.3 Constants ............................................................................................................. 10

4 Requirements ................................................................................................................ 10

5 Coupling coefficients ..................................................................................................... 10

5.1 General ................................................................................................................. 10

5.2 Conductive disks ................................................................................................... 12

5.3 Anatomical body models for numerical calculations ............................................... 14

6 Source model ................................................................................................................ 14

6.1 General ................................................................................................................. 14

6.2 Single cable .......................................................................................................... 15

6.3 Parallel cables ...................................................................................................... 15

6.4 Rectangular loop ................................................................................................... 16

7 Assessment methods ..................................................................................................... 18

7.1 General ................................................................................................................. 18

7.2 General considerations ......................................................................................... 18

7.2.1 Time averaging .............................................................................................. 18

7.2.2 Spatial averaging ........................................................................................... 18

7.2.3 Frequency range limitations ........................................................................... 18

7.2.4 Measurement instruments .............................................................................. 19

7.2.5 Uncertainty of assessment ............................................................................. 19

7.3 Equipment with sinusoidal welding current ............................................................ 19

7.4 Equipment with pulsed or non-sinusoidal welding current ...................................... 20

7.4.1 General ......................................................................................................... 20

7.4.2 Derivation of the weighting function from limits for field quantities ................. 20

7.4.3 Application of the weighted peak method in the frequency domain ................. 22

7.4.4 Application of the weighted peak method in the time domain ......................... 23

7.5 Method based on measuring of external field levels .............................................. 23

7.5.1 General ......................................................................................................... 23

7.5.2 Measurement equipment ............................................................................... 23

7.5.3 Spatial averaging ........................................................................................... 24

7.5.4 Exposure of the head ..................................................................................... 24

7.5.5 Exposure of the trunk .................................................................................... 25

7.5.6 Exposure of the limbs .................................................................................... 25

7.6 Assessment procedure .......................................................................................... 26

7.6.1 General ......................................................................................................... 26

7.6.2 Power-source ................................................................................................ 27

7.6.3 Electrode-assembly ....................................................................................... 27

7.6.4 Welding-system ............................................................................................. 27

8 EMF data sheet and assessment report ......................................................................... 28

8.1 General ................................................................................................................. 28

8.2 EMF datasheet of components .............................................................................. 28

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SIST EN IEC 62822-3:2018
IEC 62822-3:2017 © IEC 2017 – 3 –

8.2.1 Power sources ............................................................................................... 28

8.2.2 Electrode assemblies ..................................................................................... 29

8.2.3 Other components ......................................................................................... 29

Annex A (informative) Example of the weighted peak method in the time domain ................. 30

A.1 General ................................................................................................................. 30

A.2 Power source ........................................................................................................ 30

A.2.1 General ......................................................................................................... 30

A.2.2 Applied limits ................................................................................................. 30

A.2.3 Assessment of the electrode-assembly .......................................................... 32

A.2.4 Datasheets .................................................................................................... 33

Annex B (informative) Example of the weighted peak method in the frequency domain ........ 37

B.1 General ................................................................................................................. 37

B.2 Power source ........................................................................................................ 37

B.2.1 General ......................................................................................................... 37

B.2.2 Applied limits ................................................................................................. 38

B.2.3 Assessment of the electrode-assembly .......................................................... 40

B.2.4 Datasheets .................................................................................................... 41

Annex C (informative) IEC 62822-3 for users of IEC 62822-2 ............................................... 45

Annex D (informative) Coupling coefficients for common arrangements ............................... 47

D.1 Single wire ............................................................................................................ 47

D.2 Example of standardized loop configurations ........................................................ 48

D.2.1 0,5 m × 0,5 m ................................................................................................ 48

D.2.2 1,0 m × 1,0 m ................................................................................................ 50

D.2.3 1,0 m × 1,5 m ................................................................................................ 52

Annex E (informative) Conservative approximation of coupling coefficients for

rectangular loops .................................................................................................................. 54

E.1 General ................................................................................................................. 54

E.2 XY-plane ............................................................................................................... 54

E.3 Z-direction ............................................................................................................ 55

E.4 Correlation factors ................................................................................................ 56

Annex F (informative) Example EMF datasheets .................................................................. 57

F.1 Example datasheet – Welding system ................................................................... 57

F.2 Example datasheet − Power source ...................................................................... 59

F.3 Example datasheet – Electrode assembly ............................................................. 60

Bibliography .......................................................................................................................... 61

Figure 1 – Example of a reference system ............................................................................ 11

Figure 2 – Conducting disk in a uniform, time variant magnetic flux density ......................... 12

Figure 3 – Electrical conductivity for homogeneous body models .......................................... 13

Figure 4 – Example of the placement of the conductive disks............................................... 13

Figure 5 – Source model – Single cable ................................................................................ 15

Figure 6 – Assessment configuration – Single cable ............................................................. 15

Figure 7 – Source model – Parallel cables ............................................................................ 15

Figure 8 – Assessment Configuration – Parallel Cables ........................................................ 16

Figure 9 – Rectangular loop configuration ............................................................................. 16

Figure 10 – Assessment distances for the loop configuration ............................................... 17

Figure 11 – Piecewise linear and approximated limit amplitudes ........................................... 21

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SIST EN IEC 62822-3:2018
– 4 – IEC 62822-3:2017 © IEC 2017

Figure 12 – Piecewise linear and approximated summation function phase angles .............. 22

Figure 13 – Field measurement at head position ................................................................... 24

Figure 14 – Field measurement at trunk position ................................................................... 25

Figure 15 – Field measurement at limb positions, hand and thigh ......................................... 26

Figure 16 – Assessment of a complete welding system ......................................................... 27

Figure 17 – Typical component based assessment ............................................................... 27

Figure A.1 – Current waveform ............................................................................................. 30

Figure A.2 – Combined ELVs for the head [1] ....................................................................... 31

Figure A.3 – Unity-coupling waveform ................................................................................... 31

Figure A.4 – Geometry of the electrode assembly ................................................................. 32

Figure A.5 – Datasheet of the power source ......................................................................... 33

Figure A.6 – Datasheet of the electrode assembly ................................................................ 34

Figure A.7 – Datasheet of the welding system ...................................................................... 35

Figure A.8 – Datasheet of the welding system ...................................................................... 36

Figure B.1 – Current waveform ............................................................................................. 37

Figure B.2 – Spectrum of the current waveform .................................................................... 38

Figure B.3 – Combined ELVs for the head [1] ....................................................................... 39

Figure B.4 – Unity-coupling waveform ................................................................................... 39

Figure B.5 – Geometry of the electrode assembly ................................................................. 40

Figure B.6 – Datasheet of the power source ......................................................................... 41

Figure B.7 – Datasheet of the electrode assembly ................................................................ 42

Figure B.8 – Datasheet of the welding system ...................................................................... 43

Figure B.9 – Datasheet of the welding system ...................................................................... 44

Figure E.1 – Geometry of the electrode assembly – XY-plane .............................................. 54

Figure E.2 – Geometry of the electrode assembly – Z-direction ........................................... 55

Figure F.1 – Example datasheet – Welding system ............................................................... 57

Figure F.2 – Example datasheet – Power source .................................................................. 59

Figure F.3 – Example datasheet – Power source .................................................................. 60

Table 1 – Standardized distances ......................................................................................... 11

Table 2 – Radii for the 2D disk model ................................................................................... 13

Table D.1 – Coupling coefficients – Single wire ..................................................................... 47

Table D.2 – Coupling coefficients XY-plane – Loop 0,5 m × 0,5 m ........................................ 48

Table D.3 – Coupling coefficients XY-plane – Loop 0,5 m × 0,5 m ........................................ 49

Table D.4 – Coupling coefficients XY-plane – Loop 1,0 m × 1,0 m ........................................ 50

Table D.5 – Coupling coefficients Z-plane – Loop 1,0 m × 1,0 m ........................................... 51

Table D.6 – Coupling coefficients XY-plane – Loop 1,0 m × 1,5 m ........................................ 52

Table D.7 – Coupling coefficients Z-plane – Loop 1,0 m × 1,5 m ........................................... 53

Table E.1 – Correlation factors – XY ..................................................................................... 56

Table E.2 – Correlation factors − Z ....................................................................................... 56

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SIST EN IEC 62822-3:2018
IEC 62822-3:2017 © IEC 2017 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRIC WELDING EQUIPMENT –
ASSESSMENT OF RESTRICTIONS RELATED TO HUMAN
EXPOSURE TO ELECTROMAGNETIC FIELDS (0 Hz TO 300 GHz) –
Part 3: Resistance welding equipment
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

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2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 62822-3 has been prepared by IEC technical committee 26:

Electric welding.
The text of this International Standard is based on the following documents:
FDIS Report on voting
26/626A/FDIS 26/630/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.

---------------------- Page: 11 ----------------------
SIST EN IEC 62822-3:2018
– 6 – IEC 62822-3:2017 © IEC 2017

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 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.
---------------------- Page: 12 ----------------------
SIST EN IEC 62822-3:2018
IEC 62822-3:2017 © IEC 2017 – 7 –
ELECTRIC WELDING EQUIPMENT –
ASSESSMENT OF RESTRICTIONS RELATED TO HUMAN
EXPOSURE TO ELECTROMAGNETIC FIELDS (0 Hz TO 300 GHz) –
Part 3: Resistance welding equipment
1 Scope

This part of IEC 62822 applies to equipment for resistance 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 or resistance heating achieved by means

comparable to resistance welding equipment.

This document specifies procedures for the assessment of human exposure to magnetic fields

produced by resistance welding equipment. It covers non-thermal biological effects in the

frequency range from 0 Hz to 10 MHz and defines standardized test scenarios.

NOTE 2 The general term "field" is used throughout this document for "magnetic field".

NOTE 3 For the assessment of exposure to electric fields and thermal effects, the methods specified in the

Generic Standard IEC 62311 or relevant basic standards apply.

This document does not define methods for workplace assessment regarding the risks arising

from electromagnetic fields (EMF). However, the EMF data that results from the application of

this Basic Standard can be used to assist in workplace assessment.

Other standards can apply to products covered by this document. In particular this document

cannot be used to demonstrate e
...

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