BS EN 50505:2008
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Basic standard for the evaluation of human exposure to electromagnetic fields from equipment for resistance welding and allied processes
Hardcopy , PDF
26-02-2018
English
30-06-2008
1 Scope
2 Normative references
3 Definitions
3.1 General
3.2 Specific for resistance welding and similar applications
4 Physical quantities, units and constants
4.1 Quantities and units
4.2 Constants
5 Assessment procedures
5.1 General
5.2 Resistance welding equipment EMF emission description
5.3 Assessment conditions
5.4 Averaging
5.5 Pulsed or non-sinusoidal welding current
5.6 Conductivity of living tissue
5.7 Frequency range limitations
5.8 Application of assessment procedures
5.9 Measurements
5.10 Analytical calculations
5.11 Numerical calculations
6 Uncertainty of assessment
6.1 Including uncertainty
6.2 Evaluation of uncertainties
6.3 Reasonable overall uncertainties
6.4 Examples of typical uncertainties
7 Assessment report
7.1 General principles
7.2 Items to be recorded in the assessment report
Annex A (normative) Assessment parameters
Annex B (informative) Examples for exposure assessment
Annex C (informative) Numerical simulation using anatomical
body models
Annex D (normative) Determination of coupling factor
Annex E (informative) Summation weighting and transfer
function examples
Annex F (informative) Example for an uncertainty budget
Bibliography
Applicable to equipment for resistance welding and allied processes designed for use in industrial or domestic environments.
Committee |
WEE/29
|
DocumentType |
Standard
|
Pages |
76
|
PublisherName |
British Standards Institution
|
Status |
Superseded
|
SupersededBy |
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.
Standards | Relationship |
EN 50505:2008 | Identical |
EN 50445:2008 | Product family standard to demonstrate compliance of equipment for resistance welding, arc welding and allied processes with the basic restrictions related to human exposure to electromagnetic fields (0 Hz - 300 GHz) |
ISO/IEC 17025:2005 | General requirements for the competence of testing and calibration laboratories |
IEC 61566:1997 | Measurement of exposure to radio-frequency electromagnetic fields - Field strength in the frequency range 100 kHz to 1 GHz |
EN 50392:2004 | Generic standard to demonstrate the compliance of electronic and electrical apparatus with the basic restrictions related to human exposure to electromagnetic fields (0 Hz - 300 GHz) |
2006/95/EC : 2006 | DIRECTIVE 2006/1995/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) (TEXT WITH EEA RELEVANCE) |
IEC 61786:1998 | Measurement of low-frequency magnetic and electric fields with regard to exposure of human beings - Special requirements for instruments and guidance for measurements |
EN 62226-2-1:2005 | Exposure to electric or magnetic fields in the low and intermediate frequency range - Methods for calculating the current density and internal electric field induced in the human body - Part 2-1: Exposure to magnetic fields - 2D models |
EN 61566:1997 | Measurement of exposure to radio-frequency electromagnetic fields - Field strength in the frequency range 100 kHz to 1 GHz |
ISO 669:2016 | Resistance welding Resistance welding equipment Mechanical and electrical requirements |
IEC 62226-1:2004 | Exposure to electric or magnetic fields in the low and intermediate frequency range - Methods for calculating the current density and internal electric field induced in the human body - Part 1: General |
EN 62226-1:2005 | Exposure to electric or magnetic fields in the low and intermediate frequency range - Methods for calculating the current density and internal electric field induced in the human body - Part 1: General |
IEC 62226-2-1:2004 | Exposure to electric or magnetic fields in the low and intermediate frequency range - Methods for calculating the current density and internal electric field induced in the human body - Part 2-1: Exposure to magnetic fields - 2D models |
1998/37/EC : 1998 | DIRECTIVE 98/37/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL OF 22 JUNE 1998 ON THE APPROXIMATION OF THE LAWS OF THE MEMBER STATES RELATING TO MACHINERY |
EN 50366 : 2003 AMD 1 2006 | HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES - ELECTROMAGNETIC FIELDS - METHODS FOR EVALUATION AND MEASUREMENT |
EN 50413 : 2008 AMD 1 2013 | BASIC STANDARD ON MEASUREMENT AND CALCULATION PROCEDURES FOR HUMAN EXPOSURE TO ELECTRIC, MAGNETIC AND ELECTROMAGNETIC FIELDS (0 HZ - 300 GHZ) |
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