EN 50647:2017

Basic standard for the evaluation of workers' exposure to electric and magnetic fields from equipment and installations for the production, transmission and distribution of electricity

This European Standard provides a general procedure to assess workers’ exposure to electric and magnetic fields (EMF) in work places associated with the production, transmission and distribution of electric energy, and to demonstrate compliance with exposure limit values and action levels as stated in the Council and European Parliament "EMF" Directive 2013/35/EU [12]. NOTE 1 The Council and European Parliament Directive 2013/35/EU will be transposed into national legislation in all the EU member countries. It is important that users of this standard consult the national legislation related to this transposition in order to identify the national regulations and requirements. These national regulations and requirements may have additional requirements that are not covered by this standard It has the role of a specific workplace standard. It takes into account the non-binding application guide for implementing the EMF Directive [11] and it defines the assessment procedures and compliance criteria applicable to the electric industry. The frequency range of this standard covers from DC to 20 kHz, which is sufficient to include the power frequency used for electric power supply systems throughout Europe (50 Hz) and the various harmonics and inter-harmonics occurring in the supply system. In this extremely low frequency range, electric and magnetic fields are independent and, therefore, they both have to be addressed in the exposure assessment. NOTE 2 Electrical companies also use radio frequency transmissions to operate and maintain their networks and power plants. Similarly, other exposures to EMF may occur during maintenance operations, for instance, due to the use of hand-held electrical tools. All these EMF sources are outside the scope of this standard. NOTE 3 Regarding EMF in the low frequency range, the scientific basis of the EMF directive is the ICNIRP health guidelines published in 2010 [14]. Reference is made to this scientific basis when necessary for justifying or clarifying some of the technical statements of the present document.

Basisnorm für die Evaluierung der beruflichen Exposition gegenüber elektrischen und magnetischen Feldern ausgehend von Komponenten und Anlagen zur Erzeugung, Übertragung und Verteilung elektrischer Energie

Norme fondamentale pour l'évaluation de l'exposition des travailleurs aux champs électriques et magnétiques produits par les équipements et installations de production, transport et distribution d'électricité

La présente Norme européenne fournit une procédure générale pour évaluer l’exposition des travailleurs aux champs électriques et magnétiques (EMF) sur les lieux de travail associés à la production, au transport et à la distribution de l’énergie électrique et démontrer la conformité aux valeurs limites d’exposition et aux valeurs déclenchant l’action indiquées dans la Directive 2013/35/UE « EMF » du Parlement européen et du Conseil [12]. NOTE 1 La Directive 2013/35/UE du Parlement européen et du Conseil sera transposée dans le droit national dans tous les pays membres de l’UE. Il est important que les utilisateurs de la présente norme consultent le droit national relatif à cette transposition afin d’identifier la règlementation nationale. Cette règlementation nationale peut comporter des exigences supplémentaires qui ne sont pas prévues par la présente norme. Elle joue le rôle de norme spécifique au lieu de travail. Elle tient compte du guide d’application non contraignant pour la mise en œuvre de la directive EMF [11] et définit les procédures d’évaluation et critères de conformité applicables à l’industrie de l’électricité. La plage de fréquences de la présente norme s’étend du continu à 20 kHz, ce qui est suffisant pour inclure la fréquence industrielle utilisée dans les réseaux d’énergie électrique européens (50 Hz) et les diverses harmoniques et interharmoniques présentes dans le réseau d’alimentation. Dans cette plage de très basses fréquences, les champs électriques et magnétiques sont indépendants et doivent par conséquent être pris tous les deux en compte dans l’évaluation de l’exposition. NOTE 2 Les entreprises d’électricité utilisent également des transmissions par radiofréquence pour gérer et entretenir leurs réseaux et centrales électriques. De la même façon, d’autres expositions aux champs électromagnétiques peuvent avoir lieu au cours des opérations de maintenance, par exemple du fait de l’utilisation d’outils électriques portatifs. Toutes ces sources de champs électromagnétiques ne relèvent pas du domaine d’application de la présente norme. NOTE 3 En ce qui concerne les champs électromagnétiques dans la plage de basses fréquences, les lignes directrices de l’ICNIRP sur la santé publiées en 2010 [14] constituent la base scientifique de la directive EMF. Une référence est faite à cette base scientifique lorsque cela s’avère nécessaire pour justifier ou préciser certains des points techniques du présent document.

Osnovni standard za ocenjevanje izpostavljenosti delavcev elektromagnetnim sevanjem, ki jih oddajajo oprema in inštalacije za proizvodnjo, prenos in razdeljevanje električne energije

Ta evropski standard določa splošni postopek za ocenjevanje izpostavljenosti delavcev elektromagnetnim sevanjem (EMF) na delovnih mestih, povezanih s proizvodnjo, prenosom in distribucijo električne energije, ter za dokazovanje skladnosti z mejnimi vrednostmi izpostavljenosti in ravnmi za ukrepanje, kot je navedeno v Direktivi evropskega sveta in parlamenta 2013/35/EU o elektromagnetnih sevanjih [10].
Ima vlogo posebnega standarda za delovna mesta. Upošteva neobvezujoča navodila za izvajanje direktive o elektromagnetnih sevanjih [9] ter določa postopke ocenjevanja in merila skladnosti, ki se uporabljajo v elektroindustriji.
Frekvenčno območje tega standarda obsega od enosmernega toka do 20 kHz, kar zadostuje za vključitev omrežne frekvence, ki se uporablja za električna omrežja v Evropi (50 Hz), in različnih harmonskih in medsebojno harmonskih nihanj, ki se pojavljajo v napajalnem sistemu. V tem izjemno nizkem frekvenčnem območju so elektromagnetna sevanja neodvisna in jih je zato treba obravnavati pri ocenjevanju izpostavljenosti.
OPOMBA 1: Podjetja za distribucijo električne energije upravljajo in vzdržujejo svoja omrežja in elektrarne tudi z radiofrekvenčnimi prenosi. Podobno lahko med vzdrževanjem pride do drugih izpostavljenosti elektromagnetnemu sevanju, na primer zaradi uporabe ročnih električnih orodij. Področje uporabe tega standarda ne zajema nobenega od teh virov elektromagnetnega sevanja.
OPOMBA 2: Pri elektromagnetnem sevanju v nizkem frekvenčnem območju so znanstvena podlaga za direktivo o elektromagnetnih sevanjih zdravstvene smernice ICNIRP, objavljene leta 2010 [12]. Ta znanstvena podlaga se omenja, ko je to potrebno za utemeljitev ali pojasnitev tehničnih izjav v tem dokumentu.

General Information

• Status: Published
• Publication Date: 01-Jun-2017
• ICS: 17.220.20 - Measurement of electrical and magnetic quantities
• ICS: 17.240 - Radiation measurements
• Technical Committee: CLC/TC 106X - Electromagnetic fields in the human environment
• Drafting Committee: CLC/TC 106X/WG 17 - Emf assessment in the electricity supply industry
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Completion Date: 10-Aug-2022
• Directive: 2004/40/EC - Directive 2004/40/EC of the European Parliament and of the Council of 29 April 2004 on the minimum health and safety requirements regarding the exposure of workers to the risks arising from physical agents (electromagnetic fields) (18th individual Directive within the meaning of Article 16(1) of Directive 89/391/EEC)
• Directive: 2013/35/EU - Directive 2013/35/EU of the European Parliament and of the Council of 26 June 2013 on the minimum health and safety requirements regarding the exposure of workers to the risks arising from physical agents (electromagnetic fields) (20th individual Directive within the meaning of Article 16(1) of Directive 89/391/EEC) and repealing Directive 2004/40/EC
• Mandate: M/351 - Standardisation mandate addressed to CEN, CENELEC and ETSI to develop harmonized standards for the assessment, measurement and calculation of worker's exposure to static magnetic and varying electric, magnetic and electromagnetic fields with frequencies from 0Hz to 300 GHz
• Ref Project: SIST EN 50647:2017 - Basic standard for the evaluation of workers' exposure to electric and magnetic fields from equipment and installations for the production, transmission and distribution of electricity

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2017
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Basic standard for the evaluation of workers' exposure to electric and magnetic fields
from equipment and installations for the production, transmission and distribution of
electricity
Basisnorm für die Evaluierung der beruflichen Exposition gegenüber elektrischen und
magnetischen Feldern ausgehend von Komponenten und Anlagen zur Erzeugung,
Übertragung und Verteilung elektrischer Energie
Norme fondamentale pour l’évaluation de l’exposition des travailleurs aux champs
électriques et magnétiques produits par les équipements et installations de production,
transport et distribution d’électricité
Ta slovenski standard je istoveten z: EN 50647:2017
ICS:
13.100 Varnost pri delu. Industrijska Occupational safety.
higiena Industrial hygiene
17.220.01 Elektrika. Magnetizem. Electricity. Magnetism.
Splošni vidiki General aspects
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50647
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2017
ICS 17.220.20; 17.240
English Version
Basic standard for the evaluation of workers' exposure to electric
and magnetic fields from equipment and installations for the
production, transmission and distribution of electricity
Norme fondamentale pour l'évaluation de l'exposition des Basisnorm für die Evaluierung der beruflichen Exposition
travailleurs aux champs électriques et magnétiques produits gegenüber elektrischen und magnetischen Feldern
par les équipements et installations de production, transport ausgehend von Komponenten und Anlagen zur Erzeugung,
et distribution d'électricité Übertragung und Verteilung elektrischer Energie
This European Standard was approved by CENELEC on 2017-04-10. 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, Serbia, 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
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50647:2017 E
Contents Page
European foreword . 4
3.1 Terms and definitions . 6
3.2 Physical quantities and units . 8
3.3 Abbreviations . 8
6.1 General . 11
6.2 Exposure assessment regarding external fields . 11
6.2.1 General . 11
6.2.2 Harmonics of magnetic field. 12
6.2.3 Harmonics of electric field . 12
6.3 Numerical calculation of induced electric fields inside the human body . 13
8.1 General . 13
8.2 Simplified criteria for compliance with action levels . 15
8.2.1 General . 15
8.2.2 Magnetic fields . 15
8.2.3 Electric fields . 16
8.3 Assessment using measurements or calculations . 17
8.3.1 General . 17
8.3.2 Magnetic fields . 17
8.3.3 Electric fields . 18
9.1 General . 19
9.2 Simplified criteria for compliance with exposure limit values . 19
9.2.1 General . 19
9.2.2 Magnetic fields . 20
9.2.3 Electric fields . 21
9.3 Assessment using dosimetry and considerations for non-uniform fields . 21
13.1 Workers at particular risk . 23
13.2 Other requirements . 23
Annex A (informative) Assessment of harmonics in magnetic fields . 24
A.1 Introduction . 24
A.2 Assessment Method using TEI . 24
A.3 Assessment using the weighted peak function . 26
A.4 Simplified assessment procedure for public grids . 28
Annex B (normative) 50 Hz magnetic field sources in the environment of equipment and installations
for production, transmission and distribution of electricity . 29
B.1 General . 29
B.2 Currents in single conductors . 29
B.3 Currents in circuits . 31
B.4 Assessing magnetic fields exposures . 31
B.5 Check list for assessing compliance for magnetic fields . 33
Annex C (informative) Examples of application of the different assessment criteria . 34
C.1 Assessment for air-cored reactors: Simplified calculation of the magnetic field under a

vertical air-cored self-inductance . 34
C.2 Assessment for insulated cables: Calculation of compliance distances for typical XLPE

cables. 36
C.3 Assessment for exposure to electric fields considering different coupling conditions . 38
Annex D (informative) Method for deriving Exposure-Limit-Equivalent-Fields (LEFs) . 41
D.1 Introduction . 41
D.2 Method . 41
D.3 Selection of the reference model: . 42
D.4 Reference organs and data . 42
D.5 Uncertainty assessment . 43
D.6 Deriving the Exposure-Limit-Equivalent-Field (LEF) . 44
Annex E (informative) Considerations about DC magnetic fields in electrical companies . 45
E.1 Introduction . 45
E.2 Exposure of workers to DC magnetic field in electrical companies . 45
E.3 Attention points . 45
Annex F (informative) contact currents . 46
F.1 Introduction . 46
F.2 Influence of electric fields . 46
F.2.1 General . 46
F.2.2 Person isolated (at floating potential), capacitive coupling to ground . 46
F.2.3 Person at earth potential, isolated object . 47
F.2.4 Spark discharges . 48
F.3 Influence of magnetic fields . 48
F.3.1 General . 48
F.3.2 Working adjacent to live circuits . 48
F.4 Summary . 49
Annex G (informative) Exposure during transient and fault conditions . 50
G.1 Introduction . 50
G.2 Faults . 50
G.2.1 Overview . 50
G.2.2 Short-circuit currents during faults . 50
G.2.3 Prevention and protection against faults. 50
G.2.4 Magnetic field exposures during faults. 51
G.3 Switching transients . 51
G.4 Lightning strikes . 51
G.5 Inrush currents .
...