Arc welding equipment - Part 10: Electromagnetic compatibility (EMC) requirements

Specifies applicable standards and test methods for radio-frequency emissions; applicable standards and test methods for harmonic current emission, voltage fluctuations and flicker; immunity requirements and test methods for continuous and transient, conducted and radiated disturbances including electrostatic discharges. This new edition takes into account new editions of EMC publications.

Lichtbogenschweißeinrichtungen - Teil 10: Anforderungen an die elektromagnetische Verträglichkeit (EMV)

Matériel de soudage à l'arc - Partie 10: Exigences relatives à la compatibilité électromagnétique (CEM)

Spécifie les normes applicables et les méthodes d'essai pour les émissions de radiofréquence; les normes applicables et les méthodes d'essai pour les émissions de courant harmoniques, les fluctuations de tension et les papillotements; les exigences d'immunités et les méthodes d'essai pour les perturbations continues ou transitoires, conduites et rayonnées, y compris les décharges électrostatiques. Cette nouvelle édition prend en considération de nouvelles éditions des publications CEM.

Oprema za obločno varjenje - 10. del: Zahteve za elektromagnetno združljivost (EMC) (IEC 60974-10:2007)

General Information

Status
Withdrawn
Publication Date
11-Dec-2007
Technical Committee
Drafting Committee
Parallel Committee
Current Stage
6060 - Document made available
Due Date
12-Dec-2007
Completion Date
12-Dec-2007

RELATIONS

Buy Standard

Standard
EN 60974-10:2008
English language
29 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day

Standards Content (sample)

SLOVENSKI STANDARD
SIST EN 60974-10:2008
01-april-2008
1DGRPHãþD
SIST EN 60974-10:2003
2SUHPD]DREORþQRYDUMHQMHGHO=DKWHYH]DHOHNWURPDJQHWQR]GUXåOMLYRVW
(0&  ,(&

Arc welding equipment - Part 10: Electromagnetic compatibility (EMC) requirements

Lichtbogenschweißeinrichtungen - Teil 10: Anforderungen an die elektromagnetische

Verträglichkeit (EMV)
Matériel de soudage à l'arc - Partie 10: Exigences relatives à la compatibilité
électromagnétique (CEM)
Ta slovenski standard je istoveten z: EN 60974-10:2007
ICS:
25.160.30
33.100.01
SIST EN 60974-10:2008 en,fr,de

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

---------------------- Page: 1 ----------------------
EUROPEAN STANDARD
EN 60974-10
NORME EUROPÉENNE
December 2007
EUROPÄISCHE NORM
ICS 25.160 Supersedes EN 60974-10:2003
English version
Arc welding equipment -
Part 10: Electromagnetic compatibility (EMC) requirements
(IEC 60974-10:2007)
Matériel de soudage à l'arc - Lichtbogenschweißeinrichtungen -
Partie 10: Exigences relatives à la Teil 10: Anforderungen an die
compatibilité électromagnétique (CEM) elektromagnetische Verträglichkeit (EMV)
(CEI 60974-10:2007) (IEC 60974-10:2007)

This European Standard was approved by CENELEC on 2007-12-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the

Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,

Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60974-10:2007 E
---------------------- Page: 2 ----------------------
EN 60974-10:2007 - 2 -
Foreword

The text of document 26/341/CDV, future edition 2 of IEC 60974-10, prepared by IEC TC 26, Electric

welding, was submitted to the IEC-CENELEC parallel Unique Acceptance Procedure and was approved

by CENELEC as EN 60974-10 on 2007-12-01.
This European Standard supersedes EN 60974-10:2003.
Significant technical changes with respect to EN 60974-10:2003 are:
– application of more stringent r.f. emission limits for the idle mode;

– mandatory classification of arc starting and stabilizing devices as Class A equipment;

– additional immunity tests (surges and r.f. common-mode currents);

– inclusion of informative Annex B, containing the applicable emission limits for information of the user

of the standard.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2008-09-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2010-12-01

This European Standard has been prepared under a mandate given to CENELEC by the European

Commission and the European Free Trade Association and covers essential requirements of

EC Directive 2004/108/EC. See Annex ZZ.
Annexes ZA and ZZ have been added by CENELEC.
__________
Endorsement notice

The text of the International Standard IEC 60974-10:2007 was approved by CENELEC as a European

Standard without any modification.
__________
---------------------- Page: 3 ----------------------
- 3 - EN 60974-10:2007
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application 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 When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD

applies.
Publication Year Title EN/HD Year
IEC 60050-161 – International Electrotechnical Vocabulary – –
(IEV) –
Chapter 161: Electromagnetic compatibility
IEC 60050-851 – International Electrotechnical Vocabulary – –
(IEV) –
Chapter 851: Electric welding
1) 2)
IEC 60974-1 – Arc welding equipment – EN 60974-1 2005
Part 1: Welding power sources
1) 2)
IEC 60974-3 – Arc welding equipment – EN 60974-3 2007
Part 3: Arc striking and stabilizing devices
1) 2)
IEC 60974-6 – Arc welding equipment – EN 60974-6 2003
Part 6: Limited duty manual metal arc + corr. May 2005
welding power sources
IEC 61000-3-2 2005 Electromagnetic compatibility (EMC) – EN 61000-3-2 2006
Part 3-2: Limits - Limits for harmonic current
emissions (equipment input current ≤ 16 A
per phase)
IEC 61000-3-3 1994 Electromagnetic compatibility (EMC) – EN 61000-3-3 1995
Part 3-3: Limits - Limitation of voltage + corr. July 1997
A1 2001 changes, voltage fluctuations and flicker in A1 2001
A2 2005 public low-voltage supply systems, for A2 2005
equipment with rated current ≤ 16 A per
phase and not subject to conditional
connection
IEC/TS 61000-3-4 – Electromagnetic compatibility (EMC) – – –
Part 3-4: Limits - Limitation of emission of
harmonic currents in low-voltage power
supply systems for equipment with rated
current greater than 16 A
———————
Undated reference.
Valid edition at date of issue.
---------------------- Page: 4 ----------------------
EN 60974-10:2007 - 4 -
Publication Year Title EN/HD Year
IEC 61000-3-11 2000 Electromagnetic compatibility (EMC) – EN 61000-3-11 2000
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 2004 Electromagnetic compatibility (EMC) – EN 61000-3-12 2005
Part 3-12: Limits - Limits for harmonic
currents produced by equipment connected to
public low-voltage systems with input current
> 16 A and ≤ 75 A per phase
1) 2)
IEC 61000-4-2 – Electromagnetic compatibility (EMC) – EN 61000-4-2 1995
Part 4-2: Testing and measurement
techniques - Electrostatic discharge immunity
test
1) 2)
IEC 61000-4-3 – Electromagnetic compatibility (EMC) – EN 61000-4-3 2006
Part 4-3: Testing and measurement
techniques - Radiated, radio-frequency,
electromagnetic field immunity test
1) 2)
IEC 61000-4-4 – Electromagnetic compatibility (EMC) – EN 61000-4-4 2004
Part 4-4: Testing and measurement
techniques - Electrical fast transient/burst
immunity test
1) 2)
IEC 61000-4-5 – Electromagnetic compatibility (EMC) – EN 61000-4-5 2006
Part 4-5: Testing and measurement
techniques - Surge immunity test
1) 2)
IEC 61000-4-6 – Electromagnetic compatibility (EMC) – EN 61000-4-6 2007
Part 4-6: Testing and measurement + corr. August 2007
techniques - Immunity to conducted
disturbances, induced by radio-frequency
fields
1) 2)
IEC 61000-4-11 – Electromagnetic compatibility (EMC) – EN 61000-4-11 2004
Part 4-11: Testing and measurement
techniques - Voltage dips, short interruptions
and voltage variations immunity tests

CISPR 11 (mod) 2003 Industrial scientific and medical (ISM) radio- EN 55011 2007

frequency equipment - Electromagnetic
disturbance characteristics - Limits and
methods of measurement
1) 2)
CISPR 14-1 – Electromagnetic compatibility - Requirements EN 55014-1 2006
for household appliances, electric tools and
similar apparatus –
Part 1: Emission
———————
EN 55011 includes A1:2004 to CISPR 11 (mod).
---------------------- Page: 5 ----------------------
- 5 - EN 60974-10:2007
Publication Year Title EN/HD Year
1) 2)
CISPR 16-1-1 – Specification for radio disturbance and EN 55016-1-1 2007
immunity measuring apparatus and
methods –
Part 1-1: Radio disturbance and immunity
measuring apparatus - Measuring apparatus
1) 2)
CISPR 16-1-2 – Specification for radio disturbance and EN 55016-1-2 2004
immunity measuring apparatus and
methods –
Part 1-2: Radio disturbance and immunity
measuring apparatus - Ancillary equipment -
Conducted disturbances
1) 2)
CISPR 16-1-4 – Specification for radio disturbance and EN 55016-1-4 2007
immunity measuring apparatus and
methods –
Part 1-4: Radio disturbance and immunity
measuring apparatus - Ancillary equipment -
Radiated disturbances
---------------------- Page: 6 ----------------------
EN 60974-10:2007 - 6 -
Annex ZZ
(informative)
Coverage of Essential Requirements of EC Directives

This European Standard has been prepared under a mandate given to CENELEC by the European

Commission and the European Free Trade Association and within its scope the standard covers all

relevant essential requirements as given in Annex I of the EC Directive 2004/108/EC.

Compliance with this standard provides one means of conformity with the specified essential

requirements of the Directive concerned.

WARNING: Other requirements and other EC Directives may be applicable to the products falling within

the scope of this standard.
___________
---------------------- Page: 7 ----------------------
IEC 60974-10
Edition 2.0 2007-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Arc welding equipment –
Part 10: Electromagnetic compatibility (EMC) requirements
Matériel de soudage à l’arc –
Partie 10: Exigences de compatibilité électromagnétique (CEM)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX
ICS 25.160 ISBN 2-8318-9302-X
---------------------- Page: 8 ----------------------
– 2 – 60974-10 © IEC:2007
CONTENTS

FOREWORD...........................................................................................................................4

1 Scope...............................................................................................................................6

2 Normative references .......................................................................................................6

3 Terms and definitions .......................................................................................................7

4 General test requirements ................................................................................................8

4.1 Test conditions........................................................................................................8

4.2 Measuring instruments ............................................................................................8

4.3 Artificial mains network ...........................................................................................8

4.4 Voltage probe..........................................................................................................8

4.5 Antennas.................................................................................................................8

5 Test set-up for emission and immunity..............................................................................8

5.1 General ...................................................................................................................8

5.2 Load......................................................................................................................10

5.3 Ancillary equipment ...............................................................................................10

5.3.1 General requirements ................................................................................10

5.3.2 Wire feeders..............................................................................................10

5.3.3 Remote controls ........................................................................................11

6 Emission tests ................................................................................................................11

6.1 Classification for r.f. emission tests .......................................................................11

6.1.1 Class A equipment ....................................................................................11

6.1.2 Class B equipment ....................................................................................11

6.2 Test conditions......................................................................................................11

6.2.1 Welding power source ...............................................................................11

6.2.2 Load..........................................................................................................12

6.2.3 Wire feeders..............................................................................................12

6.2.4 Ancillary equipment ...................................................................................12

6.3 Emission limits ......................................................................................................13

6.3.1 General .....................................................................................................13

6.3.2 Mains terminal disturbance voltage............................................................13

6.3.3 Electromagnetic radiation disturbance .......................................................14

6.3.4 Harmonics, voltage fluctuations and flicker ................................................14

7 Immunity tests ................................................................................................................14

7.1 Classification.........................................................................................................14

7.1.1 Applicability of tests...................................................................................14

7.1.2 Category 1.................................................................................................14

7.1.3 Category 2.................................................................................................15

7.2 Test conditions......................................................................................................15

7.3 Immunity performance criteria ...............................................................................15

7.3.1 Performance criterion A .............................................................................15

7.3.2 Performance criterion B .............................................................................15

7.3.3 Performance criterion C.............................................................................15

7.4 Immunity levels .....................................................................................................15

8 Documentation for the purchaser/user ............................................................................17

Annex A (informative) Installation and use ...........................................................................18

---------------------- Page: 9 ----------------------
60974-10 © IEC:2007 – 3 –

Annex B (informative) Limits ................................................................................................20

Figure 1 – Typical arc welding equipment with a conventional load .........................................9

Figure 2 – Position of arc welding equipment and conventional load with respect to the

antenna ..................................................................................................................................9

Table 1 – Immunity levels – Enclosure ..................................................................................16

Table 2 – Immunity levels – AC input power port...................................................................16

Table 3 – Immunity levels – Ports for process measurement and control lines.........................16

Table B.1 – Mains terminal disturbance voltage limits, idle state...........................................20

Table B.2 – Mains terminal disturbance voltage limits, load conditions..................................20

Table B.3 – Electromagnetic radiation disturbance limits, idle state ......................................21

Table B.4 – Electromagnetic radiation disturbance limits, load conditions .............................21

Table B.5 – Maximum permissible harmonic current for non-professional equipment

with input current I ≤ 16 A ...............................................................................................21

1max

Table B.6 – Current emission limits for professional equipment with I ≤ 75 A other

1max

than balanced three-phase equipment ..................................................................................22

Table B.7 – Current emission limits for professional balanced three-phase equipment

with I ≤ 75 A...................................................................................................................22

1max

Table B.8 – Current emission limits for professional balanced three-phase equipment

with I ≤ 75 A under specified conditions .........................................................................22

1max

Table B.9 – Limits for arc welding equipment with I ≤ 75 A..............................................23

1max
---------------------- Page: 10 ----------------------
– 4 – 60974-10 © IEC:2007
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ARC WELDING EQUIPMENT –
Part 10: 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, 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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any

equipment declared to be in conformity with an IEC Publication.

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 60974-10 has been prepared by IEC technical committee 26:

Electric welding.

This second edition cancels and replaces the first edition published in 2002 and amendment 1

(2004) and constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:
– application of more stringent r.f. emission limits for the idle mode;

– mandatory classification of arc starting and stabilizing devices as Class A equipment;

– additional immunity tests (surges and r.f. common-mode currents);

– inclusion of informative Annex B, containing the applicable emission limits for information

of the user of the standard.
---------------------- Page: 11 ----------------------
60974-10 © IEC:2007 – 5 –
The text of this standard is based on the following documents:
CDV Report on voting
26/341/CDV 26/356/RVC

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.

The list of all the parts of the IEC 60974 series, under the general title Arc welding equipment,

can be found on the IEC web site.

The committee has decided that the contents of this publication will remain unchanged until

the maintenance result date indicated on the IEC web site 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: 12 ----------------------
– 6 – 60974-10 © IEC:2007
ARC WELDING EQUIPMENT –
Part 10: Electromagnetic compatibility (EMC) requirements
1 Scope
This part of IEC 60974 specifies
a) applicable standards and test methods for radio-frequency (r.f.) emissions;

b) applicable standards and test methods for harmonic current emission, voltage fluctuations

and flicker;

c) immunity requirements and test methods for continuous and transient, conducted and

radiated disturbances including electrostatic discharges.

This standard is applicable to equipment for arc welding and allied processes, including power

sources and ancillary equipment, for example wire feeders, liquid cooling systems and arc

striking and stabilizing devices.
NOTE 1 Allied processes are, for example, plasma cutting and arc stud welding.

NOTE 2 This standard does not specify basic safety requirements for arc welding equipment such as protection

against electric shock, unsafe operation, insulation coordination and related dielectric tests.

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

of, this standard is considered to be in compliance for all applications.
2 Normative references

The following referenced documents are indispensable for the application 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 60050-161, International Electrotechnical Vocabulary – Chapter 161: Electromagnetic

compatibility

IEC 60050-851, International Electrotechnical Vocabulary – Chapter 851: Electric welding

IEC 60974-1, Arc welding equipment – Part 1: Welding power sources

IEC 60974-3, Arc welding equipment – Part 3: Arc striking and stabilizing devices

IEC 60974-6, Arc welding equipment – Part 6: Power sources for manual metal arc welding

with limited duty

IEC 61000-3-2:2005, Electromagnetic compatibility (EMC) – Part 3-2: Limits – Limits for

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

IEC 61000-3-3:1994, 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

Amendment 1 (2001)
Amendment 2 (2005)
———————

There exists a consolidated edition 1.2 (2005) that includes edition 1 and its amendments 1 and 2.

---------------------- Page: 13 ----------------------
60974-10 © IEC:2007 – 7 –

IEC/TS 61000-3-4, Electromagnetic compatibility (EMC) – Part 3-4: Limits – Limitation of

emission of harmonic currents in low-voltage power supply systems for equipment with rated

current greater than 16 A

IEC 61000-3-11:2000, 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 61000-3-12:2004, 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, Electromagnetic compatibility (EMC) – Part 4-2: Testing and measurement

techniques – Electrostatic discharge immunity test

IEC 61000-4-3, Electromagnetic compatibility (EMC) – Part 4-3: Testing and measurement

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

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

techniques – Electrical fast transient/burst immunity test

IEC 61000-4-5, Electromagnetic compatibility (EMC) – Part 4-5: Testing and measurement

techniques – Surge immunity test

IEC 61000-4-6, Electromagnetic compatibility (EMC) – Part 4-6: Testing and measurement

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

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

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

CISPR 11:2003, Industrial, scientific and medical (ISM) radio-frequency equipment – Radio

disturbance characteristics – Limits and methods of measurement

CISPR 14-1, Electromagnetic compatiblility – Requirements for household appliances, electric

tools and similar apparatus – Part 1: Emission

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

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

equipment – Conducted disturbances

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

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

equipment – Radiated disturbances
3 Terms and definitions

For the purposes of this document, the terms and definitions related to EMC and to the

relevant phenomena contained in IEC 60050-161, the terms and definitions related to arc

welding equipment contained in IEC 60050-851 and in IEC 60974-1, as well as the following,

apply.
3.1
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
---------------------- Page: 14 ----------------------
– 8 – 60974-10 © IEC:2007

NOTE 1 Both intervals are related to the level of the limit of continuous disturbance.

NOTE 2 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.
3.2
idle state

operating mode in which the power is switched on, but the welding circuit is not energized

4 General test requirements
4.1 Test conditions

Tests shall be carried out within the specified operating conditions for the apparatus, as given

in IEC 60974-1 or IEC 60974-6, and at its rated supply voltage and frequency. Results

obtained for r.f. emission and immunity at 50 Hz are valid for the same model operating at

60 Hz and vice versa.
4.2 Measuring instruments

The measuring equipment shall comply with the requirements of CISPR 16-1-1 and the

standards referred to in Tables 1, 2 and 3 as applicable.
4.3 Artificial mains network

Measurement of the mains terminal disturbance voltage shall be made using an artificial

mains network consisting of 50 Ω/50 μH V-network as specified i
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.