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

IEC 62135-2:2020 is available as IEC 62135-2:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
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)

IEC 62135-2:2020 est disponible sous forme de IEC 62135-2:2020 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.
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
Technical Committee
Current Stage
PPUB - Publication issued
Completion Date
30-Mar-2020
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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)
IEC 62135-2:2020-03(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
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

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: 3 ----------------------
– 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

---------------------- Page: 4 ----------------------
IEC 62135-2:2020 © IEC 2020 – 3 –

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

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– 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; 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 62135-2 has been prepared by IEC technical committee 26:

Electric welding.

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:
a) update of the applicable limits related to the updated references;
b) implementation of radiated magnetic field requirements.
---------------------- Page: 6 ----------------------
IEC 62135-2:2020 © IEC 2020 – 5 –
The text of this standard is based on the following documents:
FDIS Report on voting
26/696/FDIS 26/698/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.

A list of all parts of the IEC 62135 series, under the general title Resistance welding

equipment, 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: 7 ----------------------
– 6 – IEC 62135-2:2020 © IEC 2020
RESISTANCE WELDING EQUIPMENT –
Part 2: Electromagnetic compatibility (EMC) requirements
1 Scope

This part of IEC 62135 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.

Resistance welding equipment type tested in accordance with, and which has met the

requirements of, this document, is deemed to be in compliance for all applications.

The frequency range covered is from 0 Hz to 400 GHz.

Arc welding equipment containing a radio receiver or transmitter is within the scope of this

document. Additional requirements for such equipment is specified in Annex D.

The radiated emission requirements in this document are not intended to be applicable to the

intentional transmissions from a radio transmitter as defined by the ITU nor to any spurious

emissions related to these intentional transmitters.

This product EMC standard for resistance welding equipment takes precedence over all

aspects of the generic standards and no additional EMC tests are required or necessary.

NOTE 1 Typical allied processes are resistance hard and soft soldering or resistance heating achieved by means

comparable to resistance welding equipment.
NOTE 2 Limit values are specified for only part of the frequency range.
Resistance welding equipment are classified as Class A and Class B equipment.
This part of IEC 62135 specifies

a) test methods to be used in conjunction with CISPR 11:2015, CISPR 11:2015/AMD1:2016

and CISPR 11:2015/AMD2:2019 to determine radio-frequency (RF) emission;

b) relevant standards and test methods for harmonic current emission, voltage fluctuation

and flicker;

c) additional requirements for equipment powered by internal or external batteries (Annex C).

NOTE 3 The limits in this document cannot, however, provide full protection against interference to radio and

television reception when the resistance welding equipment is used closer than 30 m to the receiving antenna(e).

NOTE 4 In special cases, when highly susceptible apparatus is being used in close proximity, additional

mitigation measures are sometimes employed to further reduce the electromagnetic emissions.

NOTE 5 The origins of the limit values in this document are summarized in Annex A.

This part of IEC 62135 also defines immunity requirements and test methods for continuous

and transient, conducted and radiated disturbances including electrostatic discharges.

NOTE 6 These requirements do not, however, cover extreme cases which are extremely rare.

---------------------- Page: 8 ----------------------
IEC 62135-2:2020 © IEC 2020 – 7 –
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 61000-3-2:2018, Electromagnetic compatibility (EMC) – Part 3-2: Limits – Limits for

harmonic current emissions (equipment input current ≤ 16 A per phase)

IEC 61000-3-3:2013, Electromagnetic compatibility (EMC) – Part 3-3: Limits – Limitation of

voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for

equipment with rated current ≤ 16 A per phase and not subject to conditional connection

IEC 61000-3-3:2013/AMD1:2017

IEC 61000-3-11:2017, Electromagnetic compatibility (EMC) – Part 3-11: Limits – Limitation of

voltage changes, voltage fluctuations and flicker in public low-voltage supply systems –

Equipment with rated current ≤ 75 A and subject to conditional connection

IEC 61000-3-12:2011, Electromagnetic compatibility (EMC) – Part 3-12: Limits for harmonic

currents produced by equipment connected to public low-voltage systems with input current >

16 A and ≤ 75 A per phase
IEC 61000-4-2:2008, Electromagnetic compatibility (EMC) – Part 4-2: Testing and
measurement techniques – Electrostatic discharge immunity test
IEC 61000-4-3:2006, Electromagnetic compatibility (EMC) – Part 4-3 : Testing and

measurement techniques – Radiated, radio-frequency, electromagnetic field immunity test

IEC 61000-4-3:2006/AMD1:2007
IEC 61000-4-3:2006/AMD2:2010
IEC 61000-4-4:2012, Electromagnetic compatibility (EMC) – Part 4-4: Testing and
measurement techniques – Electrical fast transient/burst immunity test
IEC 61000-4-5:2014, Electromagnetic compatibility (EMC) – Part 4-5: Testing and
measurement techniques – Surge immunity test
IEC 61000-4-5:2014/AMD1:2017
IEC 61000-4-6:2013, Electromagnetic compatibility (EMC) – Part 4-6: Testing and

measurement techniques – Immunity to conducted disturbances, induced by radio-frequency

fields

IEC 61000-4-11:2004, Electromagnetic compatibility (EMC) – Part 4-11: Testing and

measurement techniques – Voltage dips, short interruptions and voltage variations immunity

tests
IEC 61000-4-11:2004/AMD1:2017

IEC 61000-4-34:2005, Electromagnetic compatibility (EMC) – Part 4-34: Testing and

measurement techniques – Voltage dips, short interruptions and voltage variations immunity

tests for equipment with input current more than 16 A per phase
IEC 61000-4-34:2005/AMD1:2009

IEC 61000-6-1:2016, Electromagnetic compatibility (EMC) – Part 6-1: Generic standards –

Immunity standard for residential, commercial and light-industrial environments

IEC 61000-6-2:2016, Electromagnetic compatibility (EMC) – Part 6-2: Generic standards –

Immunity standard for industrial environments
---------------------- Page: 9 ----------------------
– 8 – IEC 62135-2:2020 © IEC 2020

IEC 61000-6-3:2006, Electromagnetic compatibility (EMC) – Part 6-3: Generic standards –

Emission standard for residential, commercial and light-industrial environments
IEC 61000-6-3:2006/AMD1:2010

IEC 61000-6-4:2018, Electromagnetic compatibility (EMC) – Part 6-4: Generic standards –

Emission standard for industrial environments

IEC 62135-1:2015, Resistance welding equipment – Part 1: Safety requirements for design,

manufacture and installation
ISO 669:2016, Resistance welding – Resistance welding equipment – Mechanical and
electrical requirements

CISPR 11:2015, Industrial, scientific and medical equipment – Radio-frequency disturbance

characteristics – Limits and methods of measurement
CISPR 11:2015/AMD1:2016
CISPR 11:2015/AMD2:2019

CISPR 16-1-1:2019, Specification for radio disturbance and immunity measuring apparatus

and methods – Part 1-1: Radio disturbance and immunity measuring apparatus – Measuring

apparatus

CISPR 16-1-2:2014, Specification for radio disturbance and immunity measuring apparatus

and methods – Part 1-2: Radio disturbance and immunity measuring apparatus – Coupling

devices for conducted disturbance measurements
CISPR 16-1-2:2014/AMD1:2017

CISPR 16-1-4:2019, Specification for radio disturbance and immunity measuring apparatus

and methods – Part 1-4: Radio disturbance and immunity measuring apparatus – Antennas

and test sites for radiated disturbance measurements
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
cable port
point at which a conductor or a cable is connected to the apparatus
Note 1 to entry: Examples are signal, control and power ports.

Note 2 to entry: The welding circuit of resistance welding equipment is not a cable port but is part of the

enclosure port.
3.2
click

disturbance which exceeds the limit of continuous disturbance no longer than 200 ms and

which is separated from a subsequent disturbance by at least 200 ms

Note 1 to entry: Both intervals are related to the level of the limit of continuous disturbance.

Note 2 to entry: A click may contain a number of impulses, in which case the relevant time is that from the

beginning of the first to the end of the last impulse.
---------------------- Page: 10 ----------------------
IEC 62135-2:2020 © IEC 2020 – 9 –
[SOURCE: IEC 60050-851:2008, 851-15-13]
3.3
enclosure port

physical boundary of the apparatus through which electromagnetic fields may radiate or

impinge
3.4
FAR
fully-anechoic chamber

shielded enclosure, the internal surfaces of which are lined with radio-frequency-energy

absorbing material (i.e. RF absorber) that absorbs electromagnetic energy in the frequency

range of interest
[SOURCE: CISPR 11:2015/AMD1:2016, 3.20]
3.5
idle state

operating state in which the power is switched on and the welding circuit is not energized

Note 1 to entry: For some types of equipment there is no idle state.

Note 2 to entry: For a power source in a mechanized system, the configuration to achieve idle state is defined by

the manufacturer.

Note 3 to entry: An idle state can include a low energy state in which a welding process cannot be started without

automatic or manual reactivation.
3.6
OATS
open-area test site

facility used for measurements of electromagnetic fields the intention for which is to simulate

a semi-free-space environment over a specified frequency range that is used for radiated

emission testing of products

Note 1 to entry: An OATS typically is located outdoors in an open area, and has an electrically-conducting ground

plane.
[SOURCE: CISPR 11:2015/AMD1:2016, 3.21]
3.7
port

particular interface of an equipment which couples this equipment with the external

electromagnetic environment (IEC 60050-161:2018, 161-01-01) and through which the

equipment is influenced by this environment

EXAMPLE Examples of ports of interest are shown in Figure 1. The enclosure port is the physical boundary of the

apparatus (e.g. enclosure). The enclosure port provides for radiated and electrostatic discharge (IEC 60050-

161:2018, 161-01-22) energy transfer, whereas the other ports provide for conducted energy transfer.

Figure 1 – Examples of ports

Note 1 to entry: Ports in the subject area of electromagnetic compatibility are specific cases of the port defined in

IEC 60050-131:2002, 131-12-60.
---------------------- Page: 11 ----------------------
– 10 – IEC 62135-2:2020 © IEC 2020

[SOURCE: IEC Guide 107:2009, 3.1.12, modified – The presentation of the term and the

wording of the definition have been revised for compatibility with IEC 60050 (all parts).]

3.8
SAC
semi-anechoic chamber

shielded enclosure, in which five of the six internal surfaces are lined with radio-frequency

energy absorbing material (i.e. RF absorber) that absorbs electromagnetic energy in the

frequency range of interest, and the bottom horizontal surface is a conducting ground plane

for us
...

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