1、BRITISH STANDARD BS EN 50384:2002 Product standard to demonstrate the compliance of radio base stations and fixed terminal stations for wireless telecommunication systems with the basic restrictions or the reference levels related to human exposure to radio frequency electromagnetic fields (110 MHz
2、40 GHz) Occupational The European Standard EN 50384:2002 has the status of a British Standard ICS 17.220.20; 33.070.01 BS EN 50384:2002 This British Standard, having been prepared under the direction of the Electrotechnical Sector Policy and Strategy Committee, was published under the authority of t
3、he Standards Policy and Strategy Committee on 9 September 2002 BSI 9 September 2002 ISBN 0 580 40344 0 National foreword This British Standard is the official English language version of EN 50384:2002. The UK participation in its preparation was entrusted to Technical Committee GEL/106, Human exposu
4、re to low frequency and high frequency electromagnetic radiation, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred
5、 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 of British Standards Online. This publication does not purport to include all the necessary provision
6、s 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; present to the responsible international/European committee any enquiries on the interpretation, or
7、proposals for change, and keep the 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 inside front cover, the EN title page, pages 2 to 7 and a back cover. The BSI copyright date dis
8、played in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 50384 NORME EUROPENNE EUROPISCHE NORM August 2002 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electro
9、technique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50384:2002 E ICS 17.220.20; 33.070.01 English version Produ
10、ct standard to demonstrate the compliance of radio base stations and fixed terminal stations for wireless telecommunication systems with the basic restrictions or the reference levels related to human exposure to radio frequency electromagnetic fields (110 MHz - 40 GHz) Occupational Norme produit po
11、ur la dmonstration de la conformit des stations de base radio et des stations terminales fixes pour les radiotlcommunications, aux restrictions de base et aux niveaux de rfrence relatifs lexposition de lhomme aux champs lectromagntiques (110 MHz - 40 GHz) Application aux travailleurs Produktnorm zur
12、 Konformittsberprfung von Mobilfunk-Basisstationen und stationren Teilnehmergerten fr schnurlose Telekommunikationsanlagen im Hinblick auf die Basisgrenz- und Referenzwerte bezglich der Exposition von Personen gegenber elektromagnetischen Feldern (110 MHz bis 40 GHz) Berufliche Exposition This Europ
13、ean Standard was approved by CENELEC on 2002-07-02. 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
14、 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
15、 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, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malt
16、a, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.EN 50384:2002 - 2 - Foreword This European Standard was prepared by the Technical Committee CENELEC TC 106X, Electromagnetic fields in the human environment. The text of the draft was submitted to the Unique Ac
17、ceptance Procedure and was approved by CENELEC as EN 50384 on 2002-07-02. The following dates were 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) 2003-07-01 - latest date by which the national stan
18、dards conflicting with the EN have to be withdrawn (dow) 2005-07-01 _- 3 - EN 50384:2002 Contents Page 1 Scope4 2 Normative references4 3 Definitions4 4 Conditions for calculation and measurement 5 5 Limits.6 6 Evaluation of results and determination of compliance6 7 Documentation.6 Annex A (informa
19、tive) Declaration of conformity7EN 50384:2002 - 4 - 1 Scope This product standard applies to radio base stations and fixed terminal stations for wireless telecommunication systems as defined in Clause 3, operating in the frequency range 110 MHz to 40 GHz. The object of this standard is to demonstrat
20、e the compliance of such product with the basic restrictions (directly or indirectly via compliance with reference levels) related to occupational exposure to radio frequency electromagnetic fields. 2 Normative references This European Standard incorporates by dated or undated reference, provisions
21、from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amen
22、dment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 50383, Basic standard for the calculation and measurement of human exposure to electromagnetic fields from radio base stations and fixed terminal stations for wireless telec
23、ommunication systems (110 MHz 40 GHz) International Commission on Non-Ionizing Radiation Protection (1998), Guidelines for limiting exposure in time-varying electric, magnetic, and electromagnetic fields (up to 300 GHz). Health Physics 74, 494-522. 3 Definitions For the purposes of this European Sta
24、ndard, the following definitions apply. 3.1 basic restrictions restrictions on exposure to time-varying electric, magnetic, and electromagnetic fields that are based directly on established health effects. In the frequency range from 110 MHz to 10 GHz, the physical quantity used is the specific abso
25、rption rate. Between 10 GHz and 40 GHz, the physical quantity is the power density 3.2 base station in this product standard, the term “base station” (BS) covers radio base stations as well as fixed terminal stations intended for use in wireless telecommunications networks. A base station comprises
26、the hardware, including tranceivers, necessary to transmit and receive radio signals. Base stations with integrated antennas, base stations with connectors for external antennas and base stations intended for use with external antennas not supplied by the same manufacturer are covered 3.3 compliance
27、 boundary a compliance boundary defines a volume outside which any point of investigation is deemed to be compliant 3.4 continuous exposure exposure for a duration exceeding the averaging time- 5 - EN 50384:2002 3.5 electric field strength (E) the magnitude of a field vector at a point that represen
28、ts the force (F) on a positive small charge (q) divided by the charge. Electric field strength is expressed in units of volts per metre (V/m) 3.6 magnetic field strength (H) the magnitude of a field vector in a point that results in a force (F) on a charge q moving with the velocity v. The magnetic
29、field strength is expressed in units of ampere per metre (A/m) 3.7 power density the radiant power incident perpendicular to a surface, divided by the area of the surface. The power density is expressed in units of watt per square metre (W/m 2 ) 3.8 radio frequency (RF) for purposes of these safety
30、considerations, the frequency range of interest is 110 MHz to 40 GHz 3.9 reference level reference levels are provided for the purpose of comparison with exposure quantities in air. Respect of the reference levels will ensure respect of the basic restriction. In the frequency range 110 MHz to 40 GHz
31、 the reference levels are expressed as electric field strength, magnetic field strength and power density values 3.10 specific absorption rate (SAR) the time derivative of the incremental energy (dW) absorbed by (dissipated in) an incremental mass (dm) contained in a volume element (dV) of given mas
32、s density ( ) SAR d dt dW dm d dt dW dV (1) SAR is expressed in units of watts per kilogram (W/kg). NOTE SAR can be calculated by: SAR E i 2 (2) SAR c i dT dt (t=0) (3)1) where E i : rms value of the electric field strength in the tissue in V/m : conductivity of body tissue in S/m : density of body
33、tissue in kg/m 3 c i : heat capacity of body tissue in J/kg K dT dt : time derivative of temperature in body tissue in K/s 1)This equation does not address thermal regulation in a live person.EN 50384:2002 - 6 - 4 Conditions for calculation and measurement The assessment of compliance boundary shall
34、 be performed by calculation and/or measurement in accordance with EN 50383. The base station shall be operating in accordance with the manufacturers specification. Calculations and/or measurements on base stations intended for use with external antennas shall be performed for at least one typical s
35、ystem configuration consisting of a combination of the base station and an antenna system representative of the intended final use. 5 Limits The base station shall comply with the relevant limits for occupational exposure specified as basic restrictions or reference levels in International Commissio
36、n on Non-Ionizing Radiation Protection (1998) Guidelines (see Clause 2). 6 Evaluation of results and determination of compliance If the average power emitted by the base station is less than or equal to 100 mW then the base station is deemed to comply without testing. If the average power emitted by
37、 the base station is more than 100 mW, then E, H or SAR calculations and/or measurements shall be performed according to Clause 4. The results of calculations and/or measurements shall be compared directly to the limits. The product is deemed to fulfil the requirements of this standard if the calcul
38、ated and/or measured values are less than or equal to the limits. NOTE In the setting of basic restrictions and the derived reference levels, safety factors have been taken into account. In the specification of the assessment method, uncertainty has been constrained. This is the reason for not requi
39、ring that the measured values shall be compared to the limit reduced by the measurement uncertainty. 7 Documentation The legal entity responsible for putting the product on the market shall provide with the product the following information: 1) output power and antenna characteristics, if the produc
40、t is equipped with integral antennas; 2) a detailed description of at least one typical normal configuration, including antenna system (feeders, connectors, combiners, antennas, etc.), if the product is intended to be used with external antennas; 3) compliance boundaries for occupational exposure. I
41、f the product is intended for use with external antennas, compliance boundaries shall be given for the given typical system configurations; 4) information on how to determine exposure levels and compliance boundaries for any optional system configuration not specified in detail; 5) information on ho
42、w to install the product or the external antennas in order to ensure that workers are outside the compliance boundaries.- 7 - EN 50384:2002 Annex A (informative) Declaration of conformity This declaration can be used as a uniform way of giving information of compliance to interested parties. Informa
43、tion to whom it may concern DECLARATION OF CONFORMITY WITH EN 50384 Legal entity responsible for putting the product on the market hereby declares that the product described below is in full compliance with the requirements of the standard EN 50384 Other relevant information: Date Signature Name Pos
44、itionBS EN 50384:2002 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revis
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