BRITISH STANDARD50401:2006 Product standard to demonstrate the compliance of fixed equipment for radio transmission 110 MHz – 40 GHz intended for use in wireless telecommunication
Trang 1BRITISH STANDARD
50401:2006
Product standard to
demonstrate the
compliance of fixed
equipment for radio
transmission
(110 MHz – 40 GHz)
intended for use in wireless
telecommunication
networks with the basic
restrictions or the
reference levels related to
general public exposure to
radio frequency
electromagnetic fields,
when put into service
ICS 17.220.20; 33.070.01
+A1:2011
Trang 2National foreword
This British Standard is the UK implementation of
EN 50401:2006, incorporating amendment 1:2011 It supersedes
BS EN 50401:2006, which is withdrawn
The start and finish of text introduced or altered by amendment is indic-ated in the text by tags Tags indicating changes to CENELEC text carry the number of the CENELEC amendment For example, text altered by CENELEC amendment A1 is indicated by !"
The UK participation in its preparation was entrusted to Technical Committee GEL/106, Human exposure to low frequency and high frequency electromagnetic radiation
A list of organizations represented on this committee can be obtained on request to its secretary
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 cannot confer immunity from legal obligations.
BS EN 50401:2006+A1:2011
This British Standard was
published under the authority
of the Standards Policy and
Strategy Committee
on 31 July 2006
© BSI 2011
Amendments/corrigenda issued since publication
30 November 2011 Implementation of CENELEC amendment A1:2011
ISBN 978 0 580 74930 8
Trang 3EN 50401:2006+A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
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
© 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref No EN 50401:2006 E
ICS 17.220.20; 33.070.01
English version
Product standard to demonstrate the compliance of fixed equipment
for radio transmission (110 MHz - 40 GHz) intended for use in wireless telecommunication networks
with the basic restrictions or the reference levels related to general public exposure to radio frequency electromagnetic fields, when put into service
Norme produit pour démontrer la conformité
des équipements fixes de transmission
radio (110 MHz - 40 GHz),
destinés à une utilisation dans les réseaux
de communication sans fil, aux restrictions
de base ou aux niveaux de référence
relatives à l'exposition des personnes
aux champs électromagnétiques
de fréquence radio, lors de leur
mise en service
Produktnorm zum Nachweis der Übereinstimmung von stationären Einrichtungen für Funkübertragungen (110 MHz bis 40 GHz), die zur Verwendung
in schnurlosen Telekommunikationsnetzen vorgesehen sind, bei ihrer Inbetriebnahme mit den Basisgrenzwerten oder den
Referenzwerten bezüglich der Exposition der Allgemeinbevölkerung gegenüber hochfrequenten elektromagnetischen Feldern
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-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, 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
October 2011
Trang 42
-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 50401 on 2005-12-06
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) 2007-01-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2009-01-01
This European Standard has been prepared under a mandate given to CENELEC by the European Commission and the European Free Trade Association and covers essential requirements of EC Directive 1999/5/EC
Foreword to amendment A1
This document (EN 50401:2006/A1:2011) has been prepared by the Technical Committee CENELEC
TC 106X, “Electromagnetic fields in the human environment”
The following dates are fixed:
– latest date by which the amendment has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2012-08-29
– latest date by which the national standards conflicting
with the amendment have to be withdrawn (dow) 2014-08-29
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights CEN and CENELEC shall not be held responsible for identifying any or all such patent rights
BS EN 50401:2006+A1:2011
EN 50401:2006+A1:2011 (E)
Trang 5- 3
Contents
1 Scope 4
2 Normative references 4
3 Definitions 4
4 Exposure limits 5
5 Compliance assessment 5
6 Documentation 6
!Text deleted"
- EN 50401:2006+A1:2011 (E)
Trang 64
-1 Scope
This product standard applies to base stations as defined in Clause 3, operating in the frequency range 110 MHz to 40 GHz The objective of the standard is to verify that such product complies with the basic restrictions directly or via compliance with reference levels related to the general public exposure to radio frequency electromagnetic fields in the frequency range 100 kHz to
40 GHz, where the general public has access and when it is put into service in its operational environment
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 50400, Basic standard to demonstrate the compliance of fixed equipment for radio
transmission (110 MHz - 40 GHz) intended for use in wireless telecommunication networks with the basic restrictions or the reference levels related to general public exposure to radio frequency electromagnetic fields, when put into service
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)
3 Definitions
For the purposes of this document, the following terms and definitions apply
3.1
antenna
device that serves as a transducer between a guided wave (e.g coaxial cable) and a free space wave, or vice versa It can be used either to emit or to receive a radio signal In the present standard, if not mentioned, the term antenna is used only for emitting antenna(s)
3.2
average emitted power
the average emitted power is the time-averaged rate of energy transfer defined by:
∫
−
1
) (
1
1 2
t t
t t P
where
t 2 – t 1 is the averaging time, t avg defined as a function of frequency in the Council
Recommendation 1999/519/EC of 12 July 1999;
P(t) is the power radiated by the antenna at the maximum duty cycle of the equipment at the
maximum power setting of the equipment
3.3
base station (BS)
fixed equipment for radio transmission used in cellular communication and/or wireless local area networks Point-to-point communication and point-to-multipoint communication equipment integral to the above networks are also included For the purpose of this standard, the term
“base station” includes the radio transmitter(s) and the associated antenna(s)
BS EN 50401:2006+A1:2011
EN 50401:2006+A1:2011 (E)
Trang 75
-3.4
basic restriction
restrictions on exposure to time - varying electric, magnetic, and electromagnetic fields that are based directly on established health effects Depending upon the frequency of the field, the physical quantities used to specify these restrictions are current density (J), specific absorption rate (SAR) and power density (S)
3.5
electric field strength (E)
the magnitude of a field vector at a point that represents the force (F) on a small test charge (q)
divided by the charge
E = F
q
Electric field strength is expressed in units of volt per meter (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 field strength is expressed in units of amperes per meter (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 meter (W/m²)
3.8
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 the reference levels are expressed as electric field strength, magnetic field strength and power density values
4 Exposure limits
The relevant limits for general public exposure specified in the Council Recommendation 1999/519/EC as Basic Restrictions or Reference Levels as well as conditions for simultaneous exposure to multiple frequency fields shall apply for the purpose of this standard
5 Compliance assessment
theproduct
In countries in which the objective of this standard is embedded in a regulatory procedure for site certification, building permit or operation approval, e.g in Germany, Italy or Switzerland, the limit values stipulated by this regulation shall be used
!
"
In countries in which the objective of this standard is embedded in a regulatory procedure for site certification, building permit or operation approval, e.g in Germany, Italy or Switzerland, the compliance assessment shall follow the requirements of this regulation, else when
!
"
EN 50401:2006+A1:2011 (E)
is put into service i n its operational environment and operated in acc ordance wi th the manufacturers’ specification, it fulfils the requirements of this standard if the general public is not able to freely reach (because of access restrictions or because of the site configuration) any place in the vicinity of the emitting base station antenna(s) where the total exposure to emissions in the frequency range 100 kHz to 40 GHz may exceed the limits defined in Clause 4
Trang 86 -The product is deemed to comply without exposure assessment if
• the maximum average emitted power for each antenna of the product is less than or equal to
250 mW,
• the maximum average emitted power for each antenna of the product is less than or equal to
1 W and the antenna(s) are installed according to the instructions provided by the manufacturer and such that the lowest radiating part of the antenna is at a height greater than or equal to 2 m above the general public walkway that gives general public access to the volume within 2 m of the product's antenna,
otherwise, exposure shall be assessed according to EN 50400 where the general public has access and where the exposure resulting from the product's RF emission is higher than 0,05 of Clause 4 limits The assessment results shall be compared directly to the exposure limits
6 Documentation
1) a detailed description of the configuration of the base station in its operational environment (e.g antenna(s) characteristics, feeders, connectors, combiners),
2) all the information, methods and their uncertainty used to determine exposure levels for the general public according to EN 50400,
3) general public access restrictions if any
The documentation may cover several base stations with similar technical specifications and environmental conditions
If, in accordance to Clause 5, the product when put into service is deemed to comply without exposure assessment, then the facts and conditions on which this classification is based (according to the bullet points in Clause 5) shall be stated by the manufacturer in the user instructions No additional documentation is required in these cases
The compliance documentation shall follow national regulation, else include at least
BS EN 50401:2006+A1:2011
EN 50401:2006+A1:2011 (E)
Trang 10BSI Group
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BS EN
50401:2006
+A1:2011