International Standards and Conformity Assessment for all electrical, electronic and related technologies



Reference EN 50505:2008
Title Basic standard for the evaluation of human exposure to electromagnetic fields from equipment for resistance welding and allied processes
Project Number 15338
Abstract/Scope This European Standard applies to equipment for resistance welding and allied processes designed for use in industrial or domestic environments. NOTE 1 Typical allied processes are resistance hard and soft soldering or resistance heating achieved by means comparable to resistance welding equipment. This European Standard establishes a suitable evaluation method for determining the electromagnetic fields in the space around the equipment and defines standardized operating conditions and measuring distances. It provides a method to show conformity with guidelines or requirements concerning human exposure to electromagnetic fields. The Directive 2006/95/EC of the European Parliament and the Council [1], Article 2, stipulates that the Member States take all appropriate measures to ensure that electrical equipment may be placed on the market only if, having been constructed in accordance with good engineering practice in safety matters in force in the Community, it does not endanger the safety of persons, domestic animals or property when properly installed and maintained and used in applications for which is was made. The principal elements of those safety objectives are listed in Annex I Clause 2.b. This standard may be used in conjunction with EN 50445 for demonstration of conformity to the Council Directive with reference to human exposure to electromagnetic fields (EMF). There are additional requirements covered by Article 2 and Annex I Clause 2.b, which are not included in this document. The Council Recommendation 1999/519/EC [2] provides Basic Restrictions and Derived reference levels for exposure of the general public. This standard may be used for demonstration of resistance welding equipment conformity to the Council Recommendation on this basis, but there may be additional specific national or international requirements which are not included. The ICNIRP Guidelines [3], on limits of exposure to static magnetic fields as well as for limiting exposure in time varying electric, magnetic and electromagnetic fields, provide Basic restrictions and Derived reference levels for both occupational and general exposure. This standard may be used for demonstration of equipment conformity to ICNIRP Guidelines on this basis, but there may be additional national or international requirements which are not included. It is also possible to use this document as a basis to demonstrate conformity of resistance welding equipment to other national and international guidelines or requirements with regard to human exposure from EMF, for example Council Directive 2004/40/EC [4] on the minimum health and safety requirements regarding the exposure of workers to the risk arising from physical agents (electromagnetic fields), or the requirements of the Directive 98/37/EC [5]. In these cases, other restrictions and levels than those referenced above may be used. Other standards may apply to equipment covered by this standard. In particular this standard can not be used to demonstrate electromagnetic compatibility with other equipment; nor does it specify any product safety requirements other than those specifically related to human exposure to electromagnetic fields. The frequency range covered is 0 Hz to 300 GHz.


Current Stage code 6060
Current Stage code date 2008-04-18
Current Stage code deadline 2009-03-01
Deadline date for vote 2007-07-31


Mandate(s) M/305; M/351
Order Voucher  


IEC Technical Body IEC/TC 26
Reference Document  
ICS 25.160.30 - Welding equipment
Keywords Electromagnetic field; Human; Exposure; Resistance welding
Note To be read in conjunction with EN 50445 * TC advice: To be ratified without link to LVD
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2008-04-18 2009-03-01 export to doc file  EN  DE
5099 2008-03-01 2008-07-01  
5061 2008-01-28 2008-03-01  
5060 2007-10-23 2007-11-22 export to doc file  EN
5020 2007-08-17 2007-10-19 export to doc file  EN
4099 2007-06-27 2007-07-27  
4060 2007-02-27 2007-05-27 export to doc file  EN
4020 2006-09-22 2007-02-23 export to doc file  EN
3099 2006-06-28 2006-10-12  
2020 2005-09-06 2006-03-06  
2020 2004-09-30 2005-06-30  
2020 2004-03-31 2004-12-31  
1000 2004-03-23 2004-06-02  
1000 2003-10-01 2004-04-02  
1000 2002-07-02 2003-01-02  

Implementation Dates

date of Ratification (DOR) (1) 2008-03-01
date of Availability (DAV) (2) 2008-04-18
date of Announcement (DOA) (3) 2008-09-01
date of Publication (DOP) (4) 2009-03-01
date of Withdrawal (DOW) (5) 2011-03-01


Superseded by  
Normative reference (6) EN ISO/IEC 17025:2005
EN 50392:2004
EN 50445:2008
EN 61566:1997
EN 62226-1:2005
EN 62226-2-1:2005

(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved

(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat

(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level

(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement

(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn

(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.