BS EN 50445:2008

1 Scope
2 Normative references
3 Terms and definitions
4 Compliance criteria and exposure limits
  4.1 Background
  4.2 Equipment for use by the general public
  4.3 Equipment for occupational use
  4.4 Equipment for occupational use in a public area
  4.5 Exposure of persons wearing cardiac pacemakers or other
      medical implants
  4.6 Projectile risk
  4.7 Touch currents
5 Compliance assessment
  5.1 General
      5.1.1 Measurement and calculation
      5.1.2 Time averaging
      5.1.3 Spatial averaging
      5.1.4 Assessment of equipment with pulsed or non-sinusoidal
            welding current
      5.1.5 Assessment of equipment with multiple welding current
            waveforms
  5.2 Assessment of EMF
      5.2.1 General considerations
      5.2.2 Electric field
      5.2.3 Magnetic field measurements to show compliance with
            reference levels
      5.2.4 Calculations to show compliance with reference levels
      5.2.5 Calculations to show compliance with basic restrictions
6 Information to be supplied with the apparatus
7 Marking
8 Uncertainty of assessment
  8.1 Using uncertainty for comparison with limits
  8.2 Permissible expanded uncertainties
Annex A (informative) - General public basic restrictions and
        reference levels
Annex B (informative) - Occupational basic restrictions and
        reference levels
Annex C (informative) - Example for general EMF information
Bibliography

Describes equipment for resistance welding, arc welding and allied processes designed for use in industrial or domestic environments, including welding power sources, wire feeders and ancillary equipment, e.g. torches, liquid cooling systems and arc striking and stabilising devices.

This product family standard applies to equipment for resistance welding, arc welding and allied processes designed for use in industrial or domestic environments, including welding power sources, wire feeders and ancillary equipment, e.g. torches, liquid cooling systems and arc striking and stabilising devices. NOTE 1 Allied processes are for example resistance hard and soft soldering, resistance heating by means comparable to resistance welding equipment, electric arc cutting and arc spraying. The frequency range covered is 0 Hz to 300 GHz. This product family standard may be used to demonstrate compliance with the requirements of Directive 2006/95/EC [1] (needed for placing electric welding equipment on the European market), with regard to the limitation of human exposure to electromagnetic fields (EMF). There are additional requirements in the Directive, which are not included in this product family standard. NOTE 2 The Directive 2006/95/EC [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. This product family standard may also be used for assessment regarding the requirements of Directive 2004/40/EC [3] on the minimum health and safety requirements regarding the exposure of workers to the risks arising from physical agents (electromagnetic fields) or Recommendation 1999/519/EC [2] on the limitation of exposure of the general public to electromagnetic fields, provided that no other relevant field sources are present in close proximity. If other relevant field sources are present, additional assessment is necessary. NOTE 3 It should be noted that the supplier of specific equipment might not know the overall exposure environment in which the equipment is being used. This product family standard can only be used to assess human exposure from the specific equipment under evaluation when being used in accordance with the suppliers guidelines. NOTE 4 Assessment procedures for workplaces with multiple field-sources may be found in EN 50499 [7]. Other standards may apply to products covered by this product family 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. NOTE 5 Procedures to demonstrate compliance are not specified for the whole frequency range.