EN 62135-1:2015

Resistance welding equipment - Part 1: Safety requirements for design, manufacture and installation

IEC 62135-1:2015(E) applies to equipment for resistance welding and allied processes and includes single and multiple welding stations which may be manually or automatically loaded and/or started. This second edition cancels and replaces the first edition published in 2008. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - creepage distances for pollution degree 4 are no longer valid (see Table 2); - insulation requirements for Class II equipment are defined (see Table 3); - dielectric test voltage interpolation restriction lower limit is changed to 220 V and interpolation for control and welding circuit is clarified (see Table 4); - maximum temperature for insulation systems are reviewed in accordance with current edition of IEC 60085 (see Table 7); - marking of terminals is defined (see 10.3); - table for nominal voltages of supply networks is changed adopting Table B.2 of IEC 60664-1:2007 in place of the Table B.1 values referenced in the previous edition to provide for equipment to be connected to both earthed and unearthed systems. The change impacts the creepage and clearance distance requirements for some supply voltage ratings (see Annex A); - touch current in fault condition are measurement procedures are clarified (see 6.4.4 and Annex C); - welding circuit touch current is defined (see 6.2.6); - touch current in normal condition are clarified and moved in protection against electric shock in normal service (see 6.3.7); - heating test conditions are clarified (see 7.1.1); - external surface temperature rise limitation is changed (see 7.3.2).

Widerstandsschweißeinrichtungen - Teil 1: Sicherheitsanforderungen für die Konstruktion, Herstellung und Errichtung

Matériels de soudage par résistance - Partie 1: Exigences de sécurité pour la conception, la fabrication et l’installation

L'IEC 62135-1:2015 s'applique aux matériels de soudage par résistance et aux procédés connexes et comprend les stations de soudage simples et multiples qui peuvent être alimentées manuellement ou automatiquement et/ou mises en route. Cette deuxième édition annule et remplace la première édition parue en 2008. Cette édition constitue une résivion technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: - les lignes de fuite pour le degré de pollution 4 ne sont plus valables (voir le Tableau 2); - les exigences relatives à l'isolement pour le matériel de classe II sont définies (voir le Tableau 3); - la limite inférieure de restriction d'interpolation de la tension d'essai diélectrique est modifiée à 220 V et l'interpolation des circuits de commande et de soudage est clarifiée (voir le Tableau 4); - la température maximale pour les systèmes d'isolation est revue conformément à l'actuelle édition de l'IEC 60085 (voir le Tableau 7); - le marquage des bornes est défini (voir 10.3); - le tableau des tensions nominales des réseaux d'alimentation est modifié: les valeurs du Tableau B.2 de l'IEC 60664-1:2007 sont prises en compte à la place des valeurs du Tableau B.1, référencées dans la précédente édition pour le matériel à connecter aux systèmes mis à la terre et non mis à la terre. Cette modification influence les exigences relatives aux lignes de fuite et aux distances d'isolement dans l'air pour certaines caractéristiques assignées de tension d'alimentation (voir l'Annexe A); - les informations relatives au courant de contact en cas de défaut et les procédures de mesure sont clarifiées (voir 6.4.4 et l'Annexe C); - le courant de contact du circuit de soudage est défini (voir 6.2.6); - les informations relatives au courant de contact en condition normale sont clarifiées et déplacées dans la partie protection contre les chocs électriques en service normal (voir 6.3.7); - les conditions d'essai d'échauffement sont clarifiées (voir 7.1.1); - la limite d'échauffement de la surface externe est modifiée (voir 7.3.2).

Oprema za uporovno varjenje - 1. del: Varnostne zahteve za zasnovo, izdelavo in inštalacijo

Ta del standarda IEC 62135 se uporablja za opremo za uporovno varjenje in povezane procese ter zajema enkratne in večkratne varilne postaje, ki se lahko ročno ali samodejno obremenijo in/ali vklopijo. Ta del standarda IEC 62135 obravnava nepremično in premično opremo. Ta del standarda IEC 62135 določa električne varnostne zahteve za zasnovo, izdelavo in inštalacijo. Ne obravnava vseh neelektričnih varnostnih zahtev (npr. hrupa, vibracij). Ta del standarda IEC 62135 ne obravnava zahtev za elektromagnetno združljivost (EMC), ki so zajete v standardu IEC 62135-2. Da bi se dosegla skladnost s tem standardom, bi bilo treba oceniti vsa varnostna tveganja, vključena v obremenjevanje, podajanje, delovanje in razbremenjevanje opreme, kjer je to primerno, ter upoštevati zahteve povezanih standardov.

General Information

• Status: Published
• Publication Date: 02-Jul-2015
• Withdrawal Date: 10-Jun-2018
• ICS: 25.160 - Welding, brazing and soldering
• Technical Committee: CLC/TC 26 - Electric welding
• Drafting Committee: IEC/TC 26 - IEC_TC_26
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 03-Jul-2015
• Completion Date: 03-Jul-2015
• Directive: 2006/95/EC - Directive 2006/95/EC of the European Parliament and of the Council of 12 December 2006 on the harmonisation of the laws of Member States relating to electrical equipment designed for use within certain voltage limits (codified version)
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Directive: 2014/53/EU - Directive 2014/53/EU of The European Parliament and of the Council of 16 April 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment and repealing Directive 1999/5/EC
• Ref Project: SIST EN 62135-1:2015 - Resistance welding equipment - Part 1: Safety requirements for design, manufacture and installation

Relations

• Replaces: EN 62135-1:2008 - Resistance welding equipment - Part 1: Safety requirements for design, manufacture and installation
• Effective Date: 29-Jan-2023
• Corrected By: EN 62135-1:2015/AC:2016-02 - Resistance welding equipment - Part 1: Safety requirements for design, manufacture and installation
• Effective Date: 23-Feb-2016

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2015
1DGRPHãþD
SIST EN 62135-1:2009
Oprema za uporovno varjenje - 1. del: Varnostne zahteve za zasnovo, izdelavo in
inštalacijo
Resistance welding equipment - Part 1: Safety requirements for design, manufacture and
installation
Widerstandsschweißeinrichtungen - Teil 1: Sicherheitsanforderungen für die
Konstruktion, Herstellung und Errichtung
Matériels de soudage par résistance - Partie 1: Exigences de sécurité pour la
conception, la fabrication et l’installation
Ta slovenski standard je istoveten z: EN 62135-1:2015
ICS:
25.160.30 Varilna oprema Welding equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 62135-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2015
ICS 25.160 Supersedes EN 62135-1:2008
English Version
Resistance welding equipment - Part 1: Safety requirements for
design, manufacture and installation
(IEC 62135-1:2015)
Matériels de soudage par résistance - Partie 1: Exigences Widerstandsschweißeinrichtungen - Teil 1:
de sécurité pour la conception, la fabrication et l'installation Sicherheitsanforderungen für die Konstruktion, Herstellung
(IEC 62135-1:2015) und Errichtung
(IEC 62135-1:2015)
This European Standard was approved by CENELEC on 2015-06-11. 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, 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: Avenue Marnix 17, B-1000 Brussels
© 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 62135-1:2015 E
European foreword
The text of document 26/558/FDIS, future edition 2 of IEC 62135-1, prepared by IEC/TC 26 "Electric
welding" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
(dop) 2016-03-11
• latest date by which the document has to be implemented at
national level by publication of an identical national
standard or by endorsement
(dow) 2018-06-11
• latest date by which the national standards conflicting with
the document have to be withdrawn

This document supersedes EN 62135-1:2008.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
This standard covers the Principle Elements of the Safety Objectives for Electrical Equipment
Designed for Use within Certain Voltage Limits (LVD - 2006/95/EC).
Endorsement notice
The text of the International Standard IEC 62135-1:2015 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60085 NOTE Harmonized as EN 60085.
IEC 60112 NOTE Harmonized as EN 60112.
IEC 60364 NOTE Harmonized in HD 384 / HD 60364 series (partly modified).
IEC 60990 NOTE Harmonized as EN 60990.
IEC 62135-2 NOTE Harmonized as EN 62135-2.
ISO 5826 NOTE Harmonized as EN ISO 5826.
ISO 5828 NOTE Harmonized as EN ISO 5828.
ISO 8205-1 NOTE Harmonized as EN ISO 8205-1.
ISO 8205-2 NOTE Harmonized as EN ISO 8205-2.
ISO 12100 NOTE Harmonized as EN ISO 12100.
ISO 13732-1 NOTE Harmonized as EN ISO 13732-1.
IEC 13732 NOTE Harmonized in EN 13732 series (not modified).
1) 1)
ISO 14121-1 NOTE Harmonized as EN ISO 14121-1 .

1) Withdrawn.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
NOTE 1 When 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 60204-1 (mod) 2005 Safety of machinery - Electrical EN 60204-1 2006
equipment of machines -
- -  + corrigendum Feb. 2010
Part 1: General requirements
IEC 60364-4-41 (mod) 2005 Low-voltage electrical installations - HD 60364-4-41 2007
Part 4-41: Protection for safety -
- -  + corrigendum Jul. 2007
Protection against electric shock
IEC 60364-6 -  Low voltage electrical installations - HD 60364-6 -
Part 6: Verification
IEC 60417-DB -  Graphical symbols for use on - -
equipment
IEC 60445 -  Basic and safety principles for man- EN 60445 -
machine interface, marking and
identification - Identification of
equipment terminals, conductor
terminations and conductors
IEC 60529 -  Degrees of protection provided by EN 60529 -
enclosures (IP Code)
IEC 60664-1 2007 Insulation coordination for equipment EN 60664-1 2007
within low-voltage systems -
Part 1: Principles, requirements and
tests
IEC 60664-3 -  Insulation coordination for equipment EN 60664-3 -
within low-voltage systems -
Part 3: Use of coating, potting or
moulding for protection against pollution
IEC 61140 -  Protection against electric shock - EN 61140 -
Common aspects for installation and
equipment
Publication Year Title EN/HD Year
ISO 669 -  Resistance welding - Resistance - -
welding equipment - Mechanical and
electrical requirements
ISO 13849-1 -  Safety of machinery - Safety-related EN ISO 13849-1 -
parts of control systems -
Part 1: General principles for design

IEC 62135-1 ®
Edition 2.0 2015-05
INTERNATIONAL
STANDARD
colour
inside
Resistance welding equipment –

Part 1: Safety requirements for design, manufacture and installation

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 25.160 ISBN 978-2-8322-2664-3

– 2 – IEC 62135-1:2015 © IEC 2015
CONTENTS
FOREWORD . 6
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
4 Environmental conditions . 11
5 Tests . 11
5.1 Test condition . 11
5.2 Measuring instruments . 11
5.3 Type tests . 12
5.4 Routine tests. 12
6 Protection against electric shock . 12
6.1 General . 12
6.2 Insulation . 13
6.2.1 General . 13
6.2.2 Clearances . 13
6.2.3 Creepage distances . 14
6.2.4 Insulation resistance . 16
6.2.5 Dielectric strength . 16
6.2.6 Welding circuit touch current . 18
6.2.7 Liquid cooling . 18
6.3 Protection against electric shock in normal service (direct contact) . 19
6.3.1 General . 19
6.3.2 Rated no-load voltage at the output . 19
6.3.3 Protection provided by barriers or the enclosure . 20
6.3.4 Capacitors . 21
6.3.5 Automatic discharge of input capacitors . 21
6.3.6 Protective conductor current under normal condition. 22
6.3.7 Touch current in normal condition . 22
6.4 Protection against electric shock in case of a fault condition (indirect
contact) . 22
6.4.1 General . 22
6.4.2 Protective provisions for welding circuit . 24
6.4.3 Internal conductors and connections . 36
6.4.4 Touch current in fault condition . 36
6.4.5 DC resistance welding equipment operating at mains frequency . 37
6.4.6 DC resistance welding equipment operating at medium frequency . 37
6.4.7 Continuity of the protective bonding circuit . 37
6.5 Additional user requirements. 38
6.6 Supply voltage . 38
6.7 Conductors of the welding circuit . 38
7 Thermal requirements . 38
7.1 Heating test . 38
7.1.1 Test conditions . 38
7.1.2 Tolerances of the test parameters . 39
7.1.3 Beginning of the heating test . 40
7.1.4 Duration of the test . 40

IEC 62135-1:2015 © IEC 2015 – 3 –
7.2 Temperature measurement . 40
7.2.1 Measurements conditions . 40
7.2.2 Surface temperature sensor . 40
7.2.3 Resistance . 40
7.2.4 Embedded temperature sensor . 41
7.2.5 Determination of the ambient temperature (t ) . 41
a
7.2.6 Determination of cooling liquid temperature (t ) . 41
a
7.2.7 Recording of temperatures . 41
7.3 Limits of temperature rise .
...