IEC 62135-2:2020

Resistance welding equipment - Part 2: Electromagnetic compatibility (EMC) requirements

IEC 62135-2:2020 is applicable to equipment for resistance welding and allied processes which are connected to mains supplies with rated voltages up to 1 000 V AC RMS. This document does not define safety requirements. This third edition cancels and replaces the second edition published in 2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- update of the applicable limits related to the updated references;
- implementation of radiated magnetic field requirements.

Matériels de soudage par résistance - Partie 2: Exigences de compatibilité électromagnétique (CEM)

L’IEC 62135-2:2020 est applicable aux matériels de soudage par résistance et procédés connexes qui sont connectés aux réseaux d’alimentation avec des tensions assignées jusqu’à 1 000 V efficace en courant alternatif. Le présent document ne définit pas d’exigences de sécurité. Cette troisième édition annule et remplace la deuxième édition parue en 2015. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- mise à jour des limites applicables conformément aux références mises à jour;
- mise en œuvre des exigences du champ magnétique rayonné.

General Information

• Status: Published
• Publication Date: 29-Mar-2020
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 25.160.30 - Welding equipment
• Technical Committee: TC 26 - Electric welding
• Drafting Committee: WG 5 - TC 26/WG 5
• Current Stage: PPUB - Publication issued
• Start Date: 17-Apr-2020
• Completion Date: 30-Mar-2020

Relations

• Revises: IEC 62135-2:2015 - Resistance welding equipment - Part 2: Electromagnetic compatibility (EMC) requirements
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 62135-2 ®
Edition 3.0 2020-03
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Resistance welding equipment –
Part 2: Electromagnetic compatibility (EMC) requirements

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.: [phone]
3, rue de Varembé [e-mail]
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 corrigendum or an amendment might have been published.

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IEC 62135-2 ®
Edition 3.0 2020-03
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Resistance welding equipment –

Part 2: Electromagnetic compatibility (EMC) requirements

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 25.160.30 ISBN 978-2-8322-8113-0

– 2 – IEC 62135-2:2020 RLV © IEC 2020
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 7
3 Terms and definitions . 8
4 General test requirements . 11
4.1 Test conditions . 11
4.2 Measuring instruments . 11
4.3 Artificial mains network . 11
4.4 Voltage probe . 11
4.5 Antennas . 11
5 Test set-up for emission and immunity . 12
5.1 General requirements . 12
5.2 Ancillary equipment . 13
6 Emission tests . 13
6.1 Classification of equipment . 13
6.1.1 Class A equipment . 13
6.1.2 Class B equipment . 13
6.2 Test conditions . 13
6.2.1 Test conditions for RF tests . 13
6.2.2 Test conditions for low-frequency tests . 14
6.3 Emission limits . 14
6.3.1 Mains terminal disturbance voltage . 14
6.3.2 Electromagnetic radiation disturbance . 16
6.3.3 Low-frequency emission limits . 19
6.3.4 Conducted emissions at signal, control and measurement ports . 20
7 Immunity tests . 20
7.1 Tests applicability . 20
7.2 Test conditions . 20
7.3 Immunity performance criteria . 20
7.3.1 Performance criteria A . 20
7.3.2 Performance criteria B . 21
7.3.3 Performance criteria C . 21
7.4 Immunity levels . 21
8 Documentation for the purchaser/user . 23
Annex A (informative) Limits . 25
A.1 General . 25
A.2 Mains terminal disturbance voltage limits . 25
A.3 Electromagnetic radiation disturbance limits . 26
A.4 Harmonic current limits .
A.5 Limits for voltage fluctuations and flicker .
Annex B (informative) Symbols . 31
Annex C (normative) Battery powered equipment . 32
C.1 General . 32
C.2 Additional emission requirements . 32
C.3 Additional immunity requirements . 32

Annex D (normative) Equipment containing radio devices . 33
D.1 General . 33
D.2 Additional emission requirements . 33
D.3 Additional immunity requirements . 33
Bibliography . 34

Figure 1 – Examples of ports . 10
Figure 2 – Test position for H field measurement . 12

Table 1 – Disturbance voltage limits – Idle state . 15
Table 2 – Disturbance voltage limits for Class A equipment – Loaded state . 16
Table 3 – Electromagnetic radiation disturbance limits – Idle state . 17
Table 4 – Electromagnetic radiation disturbance limits for Class A equipment – Loaded
state . 18
Table 5 – Electric field radiation disturbance limits for Class B equipment – Loaded
state . 18
Table 6 – Magnetic field radiation disturbance limits for Class B equipment – Loaded
state . 19
Table 7 – In-situ electromagnetic radiation disturbance limits for Class A equipment –
Loaded state . 19
Table 8 – Immunity levels – Enclosure . 22
Table 9 – Immunity levels – AC input power port . 22
Table 10 – Immunity levels – Ports for measurement and control . 23
Table A.1 – Mains terminal disturbance voltage limits, idle state .
Table A.2 – Mains terminal disturbance voltage limits, load conditions .
Table A.3 – Electromagnetic radiation disturbance limits, idle state .
Table A.4 – Electromagnetic radiation disturbance limits, load conditions .
Table A.5 – Magnetic field emission limits for Class B equipment .
Table A.6 – Maximum permissible harmonic current for equipment with input current
I ≤ 16 A .
1cc
Table A.7 – Current emission limits for equipment with 16 A < I ≤ 75 A other than
1cc
balanced three-phase equipment .
Table A.8 – Current emission limits for balanced three-phase equipment with input
current 16 A < I ≤ 75 A .
1cc
Table A.9 – Current emission limits for balanced three-phase equipment with input
current 16 A < I ≤ 75 A under specified conditions .
1cc
Table A.10 – Current emission limits for balanced three-phase equipment with I ≤
1cc
75 A under specified conditions (d, e, f) .
Table A.11 – Limits for resistance welding equipment I ≤ 75 A .
1cc
Table B.1 – Symbols to describe EMC properties . 31

– 4 – IEC 62135-2:2020 RLV © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
RESISTANCE WELDING EQUIPMENT –

Part 2: Electromagnetic compatibility (EMC) requirements

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
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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
...

IEC 62135-2 ®
Edition 3.0 2020-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Resistance welding equipment –
Part 2: Electromagnetic compatibility (EMC) requirements

Matériels de soudage par résistance –
Partie 2: Exigences de compatibilité électromagnétique (CEM)

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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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 corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Glossary - std.iec.ch/glossary
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once a month by email. French extracted from the Terms and Definitions clause of
IEC publications issued since 2002. Some entries have been
IEC Customer Service Centre - webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and
If you wish to give us your feedback on this publication or CISPR.

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IEC 62135-2 ®
Edition 3.0 2020-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Resistance welding equipment –

Part 2: Electromagnetic compatibility (EMC) requirements

Matériels de soudage par résistance –

Partie 2: Exigences de compatibilité électromagnétique (CEM)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.160.30 ISBN 978-2-8322-8028-7

– 2 – IEC 62135-2:2020 © IEC 2020
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 7
3 Terms and definitions . 8
4 General test requirements . 10
4.1 Test conditions . 10
4.2 Measuring instruments . 10
4.3 Artificial mains network . 10
4.4 Voltage probe . 11
4.5 Antennas . 11
5 Test set-up for emission and immunity . 11
5.1 General requirements . 11
5.2 Ancillary equipment . 12
6 Emission tests . 12
6.1 Classification of equipment . 12
6.1.1 Class A equipment . 12
6.1.2 Class B equipment . 13
6.2 Test conditions . 13
6.2.1 Test conditions for RF tests . 13
6.2.2 Test conditions for low-frequency tests . 13
6.3 Emission limits . 14
6.3.1 Mains terminal disturbance voltage . 14
6.3.2 Electromagnetic radiation disturbance . 16
6.3.3 Low-frequency emission limits . 19
6.3.4 Conducted emissions at signal, control and measurement ports . 19
7 Immunity tests . 20
7.1 Tests applicability . 20
7.2 Test conditions . 20
7.3 Immunity performance criteria . 20
7.3.1 Performance criteria A . 20
7.3.2 Performance criteria B . 20
7.3.3 Performance criteria C . 21
7.4 Immunity levels . 21
8 Documentation for the purchaser/user . 23
Annex A (informative) Limits . 25
A.1 General . 25
A.2 Mains terminal disturbance voltage limits . 25
A.3 Electromagnetic radiation disturbance limits . 25
Annex B (informative) Symbols . 26
Annex C (normative) Battery powered equipment . 27
C.1 General . 27
C.2 Additional emission requirements . 27
C.3 Additional immunity requirements . 27
Annex D (normative) Equipment containing radio devices . 28
D.1 General . 28

D.2 Additional emission requirements . 28
D.3 Additional immunity requirements . 28
Bibliography . 29

Figure 1 – Examples of ports . 9
Figure 2 – Test position for H field measurement . 12

Table 1 – Disturbance voltage limits – Idle state . 15
Table 2 – Disturbance voltage limits for Class A equipment – Loaded state . 16
Table 3 – Electromagnetic radiation disturbance limits – Idle state . 17
Table 4 – Electromagnetic radiation disturbance limits for Class A equipment – Loaded
state . 17
Table 5 – Electric field radiation disturbance limits for Class B equipment – Loaded
state . 18
Table 6 – Magnetic field radiation disturbance limits for Class B equipment – Loaded
state . 18
Table 7 – In-situ electromagnetic radiation disturbance limits for Class A equipment –
Loaded state . 19
Table 8 – Immunity levels – Enclosure . 21
Table 9 – Immunity levels – AC input power port . 22
Table 10 – Immunity levels – Ports for measurement and control . 23
Table B.1 – Symbols to describe EMC properties . 26

– 4 – IEC 62135-2:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
RESISTANCE WELDING EQUIPMENT –

Part 2: Electromagnetic compatibility (EMC) requirements

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees
...