1、BRITISH STANDARDBS EN 50270:2006Electromagnetic compatibility Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygenThe European Standard EN 50270:2006 has the status of a British StandardICS 13.320; 19.080; 33.100g49g50g3g38g50g51g60g44g49g42g3g58g44g55g4
2、3g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Licensed Copy: Wang Bin, na, Wed Apr 11 06:25:16 GMT+00:00 2007, Uncontrolled Copy, (c) BSIBS EN 50270:2006This British Standard was published
3、 under the authority of the Standards Policy and Strategy Committee on 31 January 2007 BSI 2007ISBN 978 0 580 49996 8National forewordThis British Standard was published by BSI. It is the UK implementation of EN 50270:2006. It supersedes BS EN 50270:1999, which will be withdrawn on 1 September 2009.
4、 The UK participation in its preparation was entrusted by Technical Committee GEL/31, Equipment for explosive atmospheres, to Subcommittee GEL/31/19, Gas detectors.A list of organizations represented on GEL/31/19 can be obtained on request to its secretary.This publication does not purport to includ
5、e 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.Amendments issued since publicationAmd. No. Date CommentsLicensed Copy: Wang Bin, na, Wed Apr 11 06:25:16 GMT+00:00 2007, U
6、ncontrolled Copy, (c) BSIEUROPEAN STANDARD EN 50270 NORME EUROPENNE EUROPISCHE NORM November 2006 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35,
7、B - 1050 Brussels 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50270:2006 E ICS 13.320; 19.080; 33.100 Supersedes EN 50270:1999English version Electromagnetic compatibility - Electrical apparatus for the detection and meas
8、urement of combustible gases, toxic gases or oxygen Compatibilit lectromagntique - Appareils de dtection et de mesure de gaz combustible, de gaz toxique et doxygne Elektromagnetische Vertrglichkeit - Elektrische Gerte fr die Detektion und Messung von brennbaren Gasen, toxischen Gasen oder Sauerstoff
9、 This European Standard was approved by CENELEC on 2006-06-01. 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
10、 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 CEN
11、ELEC 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,
12、Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: Wang Bin, na, Wed Apr 11 06:25:16 GMT+00:00 2007, Uncontrolled Copy, (c) BSIEN 50270:2006 - 2 - Foreword Thi
13、s European Standard was prepared by SC 31-9, Electrical apparatus for the detection and measurement of combustible gases to be used in industrial and commercial potentially explosive atmospheres, of Technical Committee CENELEC TC 31, Electrical apparatus for explosive atmospheres. The text of the dr
14、aft was submitted to the formal vote and was approved by CENELEC as EN 50270 on 2006-06-01. This European Standard supersedes EN 50270:1999. 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 endo
15、rsement (dop) 2007-06-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2009-06-01 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 require
16、ments of EC Directive 89/336/EEC. See Annex ZZ. _ Licensed Copy: Wang Bin, na, Wed Apr 11 06:25:16 GMT+00:00 2007, Uncontrolled Copy, (c) BSI- 3 - EN 50270:2006 Contents Page 1 Scope .4 2 Normative references.4 3 Definitions.6 4 Immunity tests 7 4.1 Test conditions.7 4.2 Performance criteria.8 4.3 R
17、equirements.8 5 Emission tests 8 Annex ZZ (informative) Coverage of Essential Requirements of EC Directives 14 Figure 1- Examples of ports .7 Table 1 - Immunity - Enclosure ports9 Table 2 - Immunity - Signal ports10 Table 3 - Immunity - Input and output DC power ports.11 Table 4 - Immunity - Input a
18、nd output AC power ports.12 Table 5 - Performance requirements13 Licensed Copy: Wang Bin, na, Wed Apr 11 06:25:16 GMT+00:00 2007, Uncontrolled Copy, (c) BSIEN 50270:2006 - 4 - 1 Scope This European Standard specifies requirements for the electromagnetic compatibility (EMC) for electrical apparatus f
19、or the detection and measurement of combustible gases, toxic 1)gases or oxygen. This standard applies to apparatus intended for use in residential, commercial and light-industrial environments as well as to apparatus intended for use in industrial environments. The apparatus may be AC-, DC- or batte
20、ry powered. This European Standard is also applicable to apparatus which is intended for use in hazardous areas which may contain explosive or potentially explosive atmospheres. It covers only normal operation and does not cover safety requirements related to EMC phenomena. This standard specifies r
21、equirements for immunity tests in relation to continuous and transient, conducted and radiated disturbances including electrostatic discharges and also for emission tests. The test requirements are specified for each port considered. These requirements have been selected to ensure an adequate level
22、of compatibility for apparatus at the appropriate locations. The levels do not, however, cover extreme cases, which may occur at any location, but with an extremely low probability of occurrence. NOTE In special cases, situations will arise where the level of disturbances may exceed the levels speci
23、fied in this standard, e.g. where an apparatus is installed in proximity to industrial, scientific or medical (ISM) equipment as specified in EN 55011 or where a hand-held transmitter is used in close proximity to an apparatus. In these instances special mitigation measures may have to be employed.
24、Apparatus falling within the scope of this European Standard is classified as follows by the following types. Type 1: apparatus intended for use in residential, commercial and light-industrial environments, as described in EN 61000-6-1 and EN 61000-6-3. Type 2: apparatus intended for use in industri
25、al environments, as described in EN 61000-6-2 and EN 61000-6-4. This European Standard does not apply to any of the following: apparatus intended for the detection of dusts or mists in air; scientific or laboratory based apparatus used only for analysis or measurement; apparatus used exclusively for
26、 process measurement purposes; apparatus for medical purposes; apparatus intended for the direct measurement of automotive exhaust gases. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited app
27、lies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 45544 series Workplace atmospheres - Electrical apparatus used for direct detection and direct concentration measurement of toxic gases and vapours EN 50020 Electrical apparatus for pot
28、entially explosive atmospheres Intrinsic safety i EN 50104 Electrical apparatus for the detection and measurement of oxygen - Performance requirements and test methods EN 50194 Electrical apparatus for the detection of combustible gases in domestic premises - Test methods and performance requirement
29、s EN 50241 series Specification for open path apparatus for the detection of combustible or toxic gases and vapours 1)The word toxic is used in accordance with its dictionary definition and includes harmful, toxic and very toxic meanings. Licensed Copy: Wang Bin, na, Wed Apr 11 06:25:16 GMT+00:00 20
30、07, Uncontrolled Copy, (c) BSI- 5 - EN 50270:2006 EN 50291 Electrical apparatus for the detection of carbon monoxide in domestic premises: Test methods and performance requirements EN 50379 Series Specification for portable electrical apparatus designed to measure combustion flue gas parameters of h
31、eating appliances EN 55011 Industrial, scientific and medical (ISM) radio-frequency equipment - Radiodisturbance characteristics - Limits and methods of measurement (CISPR 11, mod.) EN 55022 Information technology equipment - Radio disturbance characteristics - Limits and methods of measurement (CIS
32、PR 22, mod.) EN 55024:1998 Information technology equipment - Immunity characteristics - Limits and methods of measurement (CISPR 24:1997, mod.) EN 61000-4-2:1995 Electromagnetic compatibility (EMC) - Part 4-2: Testing and measuring techniques - Electrostatic discharge immunity test (IEC 61000-4-2:1
33、995) EN 61000-4-3:2006 Electromagnetic compatibility (EMC) - Part 4-3: Testing and measurement techniques - Radiated, radio-frequency, electromagnetic field immunity test (IEC 61000-4-3:2006) EN 61000-4-4:2004 Electromagnetic compatibility (EMC) - Part 4-4: Testing and measurement techniques - Elect
34、rical fast transient/burst immunity test (IEC 61000-4-4:2004) EN 61000-4-5:2006 Electromagnetic Compatibility (EMC) - Part 4-5: Testing and measurement techniques - Surge immunity test (IEC 61000-4-5:2005) EN 61000-4-6:1996 Electromagnetic compatibility (EMC) - Part 4-6: Testing and measuring techni
35、ques - Immunity to conducted disturbances, induced by radio frequency fields (IEC 61000-4-6:1996) EN 61000-4-8:1993 Electromagnetic compatibility (EMC) - Part 4-8: Testing and measuring techniques -: Power-frequency magnetic field immunity test (IEC 61000-4-8:1993) EN 61000-4-11:2004 Electromagnetic
36、 compatibility (EMC) - Part 4-11: Testing and measuring techniques - Voltage dips, short interruptions and voltage variations immunity tests (IEC 61000-4-11:2004) EN 61000-6-1:2001 Electromagnetic compatibility (EMC) - Part 6-1: Generic standards - Immunity for residential, commercial and light-indu
37、strial environments (IEC 61000-6-1:1997, mod.) EN 61000-6-2:2005 Electromagnetic compatibility (EMC) - Part 6-2: Generic standards - Immunity for industrial environments (IEC 61000-6-2:2005) EN 61000-6-3:2001 Electromagnetic compatibility (EMC) - Part 6-3: Generic standards - Emission standard for r
38、esidential, commercial and light-industrial environments (CISPR/IEC 61000-6-3:1996, mod.) EN 61000-6-4:2001 Electromagnetic compatibility (EMC) - Part 6-4: Generic standards - Emission standard for industrial environments (IEC 61000-6-4:1997, mod.) EN 61779 Series Electrical apparatus for the detect
39、ion and measurement of flammable gases (IEC 61779 series) IEC 60050 -161 International Electrotechnical Vocabulary Chapter 161: Electromagnetic compatibility Licensed Copy: Wang Bin, na, Wed Apr 11 06:25:16 GMT+00:00 2007, Uncontrolled Copy, (c) BSIEN 50270:2006 - 6 - 3 Definitions Definitions relat
40、ed to EMC and to relevant phenomena may be found in the EEC Directives (89/336/EEC and 2004/108/EC), in Chapter 161 of IEC 60050 and in CISPR Publications. The definitions stated in the EEC Directives take precedence. For the purposes of this standard the following definitions apply. 3.1 port partic
41、ular interface of the specified apparatus with the external electromagnetic environment (see Figure 1) 3.2 enclosure port physical boundary of the apparatus through which electromagnetic fields may radiate or impinge on 3.3 signal port port at which a conductor or cable intended to carry signals is
42、connected to the apparatus NOTE Eamples are analog inputs, outputs and control lines; data busses; communication networks etc. 3.4 power port port at which a conductor or cable carrying the primary electrical power needed for the operation (functioning) of an apparatus or associated apparatus is con
43、nected to the apparatus 3.5 intrinsically safe circuit circuit in which any spark or any thermal effect produced in the conditions as specified in EN 50020, which include normal operation and specified fault conditions, is not capable of causing ignition of a given explosive gas atmosphere 3.6 intri
44、nsically safe port port connected to an intrinsically safe circuit 3.7 sensor assembly in which the sensing element is housed and which may contain associated circuit components 3.8 remote sensor sensor which is not integral with the main body of the apparatus 3.9 potentially explosive atmosphere an
45、 atmosphere which could become explosive 3.10 safety barrier a device for obtaining intrinsic safety of electrical apparatus for potentially explosive atmospheres (see 8.1 of EN 50020) Licensed Copy: Wang Bin, na, Wed Apr 11 06:25:16 GMT+00:00 2007, Uncontrolled Copy, (c) BSI- 7 - EN 50270:2006 Figu
46、re 1 - Examples of ports 4 Immunity tests 4.1 Test conditions 4.1.1 The description of the tests, the test generator, the test methods, and the test set-up are given in the basic standards which are referenced in Tables 1 to 4. 4.1.2 The tests shall be made in the most susceptible operating mode in
47、the frequency bands being investigated consistent with normal applications. The configurations of the test sample shall be varied to achieve maximum susceptibility. For portable battery powered apparatus which may also be operated when connected to an external power supply both operational modes (ba
48、ttery powered as well as externally supplied) shall be tested. 4.1.3 In cases where a manufacturers specification requires external protection devices or measures which are clearly specified in the users manual, the test requirements of this standard shall be applied with the external protection dev
49、ices or measures in use. 4.1.4 The configuration and mode of operation during the tests shall be precisely noted in the test report. If the apparatus has different sensor types (e.g. electrochemical sensors or catalytic sensors) the apparatus shall be tested with each type of sensor. If the apparatus has more than one measuring range for a particular sensor the most sensitive specified by the manufacturer shall be tested. If the apparatus is designed for the detection of a variety of gases where the target gas can be changed by cha
