EN 50445:2008
(Main)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)
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)
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.
Produktfamiliennorm zur Konformitätsprüfung von Einrichtungen zum Widerstandsschweißen, Lichtbogenschweißen und artverwandten Prozessen in Bezug auf die bei der Exposition durch elektromagnetische Felder anzuwendenden Basisgrenzwerte (0 Hz - 300 GHz)
Diese Produktfamiliennorm gilt für Einrichtungen zum Widerstandsschweißen, Lichtbogenschweißen und für verwandte Prozesse für den Gebrauch im Industrie- oder Wohnbereich, einschließlich Schweißstromquellen, Drahtvorschubgeräte und Zusatzeinrichtungen, wie z.B. Brenner, Flüssigkeits-kühlgeräte und Lichtbogenzünd- und Stabilisierungseinrichtungen. ANMERKUNG 1 Verwandte Prozesse sind beispielsweise Widerstandshart- und Weichlöten, Widerstandserwärmen mit zu Widerstandsschweißeinrichtungen vergleichbaren Mitteln, Elektrolichtbogenschneiden und Lichtbogenspritzen. Der abgedeckte Frequenzbereich ist 0 Hz bis 300 GHz. Diese Produktfamiliennorm darf zum Nachweis der Einhaltung der Anforderungen der Richtlinie 2006/95/EG [1] (zum In Verkehrbringen von elektrischen Betriebsmitteln am Europäischen Markt) hinsichtlich der Begrenzung der Exposition von Personen durch elektromagnetische Felder (EMF), verwendet werden. Die Richtlinie enthält weitere Anforderungen, die nicht in dieser Produktfamiliennorm enthalten sind. ANMERKUNG 2 Die Richtlinie 2006/95/EG [1], Artikel 2, fordert, dass die Mitgliedsstaaten alle zweckdienlichen Maßnahmen treffen um sicherzustellen, dass elektrische Einrichtungen nur dann in Verkehr gebracht werden können, wenn sie in dem in der Gemeinschaft gegebenen Stand der Sicherheitstechnik entsprechen. Diese Produktfamiliennorm kann auch für die Bewertung hinsichtlich der Anforderungen der Richtlinie 2004/40/EG [3] über Mindestvorschriften zum Schutz von Sicherheit und Gesundheit der Arbeitnehmer vor der Gefährdung durch physikalische Einwirkungen (elektromagnetische Felder) oder der Empfehlung 1999/519/EG [2] zur Begrenzung der Exposition der Bevölkerung gegenüber elektromagnetischen Feldern verwendet werden, wenn keine anderen relevanten Feldquellen in direkter Nähe vorhanden sind. Wenn andere relevante Feldquellen vorhanden sind, ist eine zusätzliche Bewertung erforderlich. ANMERKUNG 3 Es sollte beachtet werden, dass der Lieferant spezifischer Einrichtungen möglicherweise nicht die gesamte Expositionsumgebung, in der diese Einrichtung zum Einsatz kommt, kennt. Diese Produktfamiliennorm kann nur die Exposition von Personen durch die zu beurteilende spezifischen Einrichtung bewerten, wenn diese nach den Richtlinien des Lieferanten verwendet wird. ANMERKUNG 4 Bewertungsverfahren für Arbeitsplätze mit mehreren Feldquellen sind in EN 50499 [7] zu finden. Für Produkte, für die diese Produktfamiliennorm gilt, können weitere Normen anwendbar sein. Im Besonderen ist diese Norm weder dafür vorgesehen, elektromagnetische Verträglichkeit mit anderen Einrichtungen nachzuweisen, noch spezifiziert sie andere Produktsicherheitsanforderungen als jene, die sich speziell auf die Exposition von Personen durch elektromagnetische Felder beziehen. ANMERKUNG 5 Konformitätsnachweisverfahren sind nicht für den gesamten Frequenzbereich festgelegt.
Norme de famille de produit pour démontrer la conformité d’un équipement pour le soudage par résistance, le soudage à l’arc et les techniques connexes avec les restrictions de base concernant l'exposition des personnes aux champs électromagnétiques (0 Hz - 300 GHz)
La présente norme de famille de produit s’applique au matériel de soudage par résistance, de soudage à l’arc et techniques connexes, conçu pour l’emploi dans les environnements industriels ou domestiques, y compris les sources de courant de soudage, les dévidoirs et équipements auxiliaires, par exemple les torches, les systèmes de refroidissement par liquide et les dispositifs d’amorçage et de stabilisation de l’arc. NOTE 1 Des techniques connexes sont, par exemple, le brasage fort et tendre par résistance, le chauffage par résistance atteint par des moyens comparables au matériel de soudage par résistance, coupage et projection à l’arc électrique. La gamme de fréquences couverte est comprise entre 0 Hz et 300 GHz. Cette norme de famille de produit peut être utilisée pour démontrer la conformité avec les exigences de la Directive 2006/95/CE [1] (nécessaire pour la mise sur le marché européen de matériel de soudage électrique) concernant la limitation de l’exposition humaine aux champs électromagnétiques (EMF). Il existe des exigences supplémentaires dans la Directive, qui ne sont pas incluses dans cette norme de famille de produit. NOTE 2 L'Article 2 de la Directive 2006/95/CE [1] stipule que les Etats Membres prennent toutes mesures utiles pour que le matériel électrique puisse être mis sur le marché à condition qu'il soit construit conformément aux règles de l'art en matière de sécurité en vigueur dans la Communauté. La présente norme de famille de produit peut également être utilisée pour l’évaluation selon les exigences de la Directive 2004/40/CE [3] concernant les prescriptions minimales de sécurité et de santé relatives à l'exposition des travailleurs, aux risques dus aux agents physiques (champs électromagnétiques) ou de la Recommandation 1999/519/CE [2] relative à la limitation de l'exposition du public aux champs électromagnétiques, à condition qu'il n'y ait pas d'autres sources de champ pertinentes dans la proximité immédiate. Lorsque d'autres sources de champ sont présentes, une évaluation supplémentaire sera nécessaire. NOTE 3 Il faut noter que le fournisseur de matériel spécifique pourrait ne pas connaître l’environnement total d’exposition dans lequel le matériel sera utilisé. Cette norme de famille de produit peut uniquement être utilisée pour évaluer l’exposition humaine provenant du matériel spécifique sous évaluation lorsqu’il est utilisé conformément aux recommandations du fournisseur. NOTE 4 Des procédures d'évaluation pour les postes de travail sont indiquées dans la EN 50499 [7]. D’autres normes peuvent s’appliquer à des produits couverts par cette norme de famille de produit. En particulier cette norme ne peut pas être utilisée pour démontrer la compatibilité électromagnétique avec d’autres matériels et elle ne spécifie aucune exigence de sécurité de produit autre que celles relevant spécifiquement de l’exposition humaine aux champs électromagnétiques. NOTE 5 Les procédures destinées à démontrer la conformité ne sont pas spécifiées sur toute la gamme de fréquences.
Standard za družino proizvodov za prikaz skladnosti opreme za uporovno varjenje, obločno varjenje in sorodne procese z osnovnimi mejnimi vrednostmi glede izpostavljenosti ljudi elektromagnetnim sevanjem (0 Hz–300 GHz)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2008
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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)
Produktfamiliennorm zur Konformitätsprüfung von Einrichtungen zum
Widerstandsschweißen, Lichtbogenschweißen und artverwandten Prozessen in Bezug
auf die bei der Exposition durch elektromagnetische Felder anzuwendenden
Basisgrenzwerte (0 Hz - 300 GHz)
Norme de famille de produit pour démontrer la conformité d’un équipement pour le
soudage par résistance, le soudage à l’arc et les techniques connexes avec les
restrictions de base concernant l'exposition des personnes aux champs
électromagnétiques (0 Hz - 300 GHz)
Ta slovenski standard je istoveten z: EN 50445:2008
ICS:
17.220.01 Elektrika. Magnetizem. Electricity. Magnetism.
Splošni vidiki General aspects
25.160.10 Varilni postopki in varjenje Welding processes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 50445
NORME EUROPÉENNE
February 2008
EUROPÄISCHE NORM
ICS 17.220.01; 25.160.10
English version
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)
Norme de famille de produit pour Produktfamiliennorm zur
démontrer la conformité d’un équipement Konformitätsprüfung von Einrichtungen
pour le soudage par résistance, zum Widerstandsschweißen,
le soudage à l’arc et les techniques Lichtbogenschweißen und artverwandten
connexes avec les restrictions de base Prozessen in Bezug auf die bei der
concernant l'exposition des personnes Exposition durch elektromagnetische
aux champs électromagnétiques Felder anzuwendenden Basisgrenzwerte
(0 Hz - 300 GHz) (0 Hz - 300 GHz)
This European Standard was approved by CENELEC on 2008-02-01. 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
© 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50445:2008 E
Foreword
This European Standard was prepared by the Technical Committee CENELEC TC 26A, Electric arc
welding equipment.
The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50445
on 2008-02-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by p ublication of an identical
national standard or by endorsement (dop) 2008-02-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2008-02-01s
This European Standard is to be read in conjunction with EN 50444 and EN 50505. The latter was
prepared by the Technical Committee CENELEC TC 26B, Electric resistance welding.
This European Standard has been prepared under mandates M/305 and M/351 given to CENELEC by
the European Commission and the European Free Trade Association.
__________
– 3 – EN 50445:2008
Contents
1 Scope .4
2 Normative references .4
3 Terms and definitions .5
4 Compliance criteria and exposure limits .6
4.1 Background .6
4.2 Equipment for use by the general public.7
4.3 Equipment for occupational use.7
4.4 Equipment for occupational use in a public area .7
4.5 Exposure of persons wearing cardiac pacemakers or other medical implants.7
4.6 Projectile risk.7
4.7 Touch currents .8
5 Compliance assessment.8
5.1 General.8
5.1.1 Measurement and calculation.8
5.1.2 Time averaging .8
5.1.3 Spatial averaging .8
5.1.4 Assessment of equipment with pulsed or non-sinusoidal welding current .9
5.1.5 Assessment of equipment with multiple welding current waveforms .9
5.2 Assessment of EMF .9
5.2.1 General considerations.9
5.2.2 Electric field.10
5.2.3 Magnetic field measurements to show compliance with reference levels.10
5.2.4 Calculations to show compliance with reference levels.10
5.2.5 Calculations to show compliance with basic restrictions .10
6 Information to be supplied with the apparatus.10
7 Marking .11
8 Uncertainty of assessment.11
8.1 Using uncertainty for comparison with limits.11
8.2 Permissible expanded uncertainties .12
Annex A (informative) General public basic restrictions and reference levels.13
Annex B (informative) Occupational basic restrictions and reference levels .15
Annex C (informative) Example for general EMF information.17
Bibliography.18
Tables
Table 1 – Summation parameters.9
Table 2 – Permissible expanded uncertainties.12
Table A.1 – General public basic restrictions for electric, magnetic and electromagnetic fields .13
Table A.2 – General public reference levels for electric, magnetic and electromagnetic fields.14
Table B.1 – Occupational basic restrictions for electric, magnetic and electromagnetic fields.15
Table B.2 – Occupational reference levels for time varying electric and magnetic fields .16
1 Scope
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.
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.
EN 50392 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)
EN 50444 Basic standard for the evaluation of human exposure to electromagnetic
fields from equipment for arc welding and allied processes
EN 50505 Basic standard for the evaluation of human exposure to electromagnetic
fields from equipment for resistance welding and allied processes
EN 60974-1 Arc welding equipment – Part 1: Welding power sources (IEC 60974-1)
EN 60974-6 Arc welding equipment – Part 6: Limited duty manual metal arc welding
power sources (IEC 60974-6)
– 5 – EN 50445:2008
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
action values
magnitude of directly measurable parameters at which one or more of the specified measures in
Directive 2004/40/EC [3] must be undertaken
3.2
arc welding power source
equipment for supplying current and voltage and having the required characteristics suitable for arc
welding and allied processes
NOTE 1 An arc welding power source may also supply services to other equipment and auxiliaries e.g. auxiliary power, cooling
liquid, consumable arc welding electrode and gas to shield the arc and the welding area.
NOTE 2 In the following text, the term “welding power source” is used.
3.3
basic restrictions
exposure limit values
restrictions on exposure to electric, magnetic and electromagnetic fields that are based directly on
established health effects and biological considerations
3.4
compliance boundary
spatial border outside which any point of investigation is deemed to be compliant
3.5
EMF
electric, magnetic or electromagnetic field
3.6
expert
competent person
skilled person
person who can judge the work assigned and recognize
...
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