BS-EN-50420-2006.pdf
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1、BRITISH STANDARD BS EN 50420:2006 Basic standard for the evaluation of human exposure to electromagnetic fields from a stand alone broadcast transmitter (30 MHz 40 GHz) The European Standard EN 50420:2006 has the status of a British Standard ICS 13.280 ? Licensed Copy: sheffieldun sheffieldun, na, M
2、on Nov 06 02:24:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 50420:2006 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2006 BSI 2006 ISBN 0 580 48952 3 National foreword This British Standard is the official English language v
3、ersion of EN 50420:2006. The UK participation in its preparation was entrusted to Technical Committee GEL/106, Human exposure to lf and hf electromagnetic radiation, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cr
4、oss-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or o
5、f British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text;
6、present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an
7、inside front cover, the EN title page, pages 2 to 22, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Nov
8、06 02:24:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD EN 50420 NORME EUROPENNE EUROPISCHE NORM June 2006 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secreta
9、riat: rue de Stassart 35, B - 1050 Brussels 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50420:2006 E ICS 13.280 English version Basic standard for the evaluation of human exposure to electromagnetic fields from a stand al
10、one broadcast transmitter (30 MHz - 40 GHz) Norme pour le calcul et la mesure de lexposition des personnes aux champs lectromagntiques provenant des metteurs de radiodiffusion isols (30 MHz - 40 GHz) Grundnorm fr die Ermittlung der Exposition gegenber elektromagnetischen Feldern von einzelnen Rundfu
11、nksendern (30 MHz bis 40 GHz) This European Standard was approved by CENELEC on 2005-12-06. 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-d
12、ate 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 unde
13、r 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, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, German
14、y, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 02:24:57 GMT+00:00 2006, Uncontrolled C
15、opy, (c) BSI EN 50420:2006 - 2 - Foreword This European Standard was prepared by Technical Committee CENELEC TC 106X, Electromagnetic fields in the human environment. The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50420 on 2005-12-06. The following dates wer
16、e fixed: ? latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2007-01-01 ? latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2009-01-01 _ Licensed Copy: sheffieldun
17、sheffieldun, na, Mon Nov 06 02:24:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI - 3 - EN 50420:2006 Contents 1 Scope.4 2 Normative references 4 3 Physical quantities, units and constants5 3.1 Quantities.5 3.2 Constants.5 4 Terms and definitions 5 5 Applicability of compliance assessment methods .9 5
18、.1 Introduction9 5.2 Assessment procedure9 5.3 Representative antennas for each service11 6 SAR measurement and calculation .11 6.1 Whole-body SAR implicit compliance11 6.2 SAR compliance11 7 Electromagnetic field measurement 11 7.1 Measurement.11 7.2 Uncertainty 12 8 Electromagnetic field calculati
19、on .15 8.1 Field regions15 8.2 Calculation models 16 9 Contact currents measurement and calculation17 10 Induced current measurement and calculation17 Annex A (normative) Field volume measurement18 Annex B (informative) Compliance boundary examples21 Figure 1 Alternative routes to calculate E-field,
20、 H-field values at point of investigation 15 Figure A.1 Block diagram of the EUT measurement system 18 Figure A.2 Cylindrical, cartesian and spherical co-ordinates defined relative to the EUT 19 Table 1 Applicable methods for each antenna region. 10 Table 2 Representative antennas for each service.
21、11 Table 3 Recommended parameters . 12 Table 4 Representative antennas for each service. 14 Table B.1 Compliance boundary examples. 22 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 02:24:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 50420:2006 - 4 - 1 Scope This standard applies to a bro
22、adcast transmitter operating in the frequency range 30 MHz to 40 GHz when put on the market. The objective of the standard is to specify, for such equipment operating in typical conditions, the method for assessment of compliance distances according to the basic restrictions (directly or indirectly
23、via compliance with reference levels) related to human exposure to radio frequency electromagnetic fields. 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, t
24、he latest edition of the referenced document (including any amendments) applies. Council Recommendation 1999/519/EC of 12 July 1999 on the limitation of exposure of the general public to electromagnetic fields (0 Hz to 300 GHz) (Official Journal L 199 of 30 July 1999) EN 504131), Basic standard on m
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