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1、BRITISH STANDARD BS EN 50470-1:2006 Electricity metering equipment (a.c.) Part 1: General requirements, tests and test conditions Metering equipment (class indexes A, B and C) The European Standard EN 50470-1:2006 has the status of a British Standard ICS 91.140.50 ? BS EN 50470-1:2006 This British S
2、tandard was published under the authority of the Standards Policy and Strategy Committee on 29 December 2006 BSI 2006 ISBN 0 580 49810 7 National foreword This British Standard was published by BSI. It is the UK implementation of EN 50470-1:2006. The UK participation in its preparation was entrusted
3、 to Technical Committee PEL/13, Electricity meters. A list of organizations represented on PEL/13 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
4、 British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. DateComments EUROPEAN STANDARD EN 50470-1 NORME EUROPENNE EUROPISCHE NORM October 2006 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrot
5、echnique Europisches Komitee fr 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 50470-1:2006 E ICS 91.140.50 English version Electricity met
6、ering equipment (a.c.) Part 1: General requirements, tests and test conditions - Metering equipment (class indexes A, B and C) Equipement de comptage dlectricit (c.a.) Partie 1: Prescriptions gnrales, essais et conditions dessai - Equipement de comptage (classes de prcision A, B et C) Wechselstrom-E
7、lektrizittszhler Teil 1: Allgemeine Anforderungen, Prfungen und Prfbedingungen - Messeinrichtungen (Genauigkeitsklassen A, B und C) This European Standard was approved by CENELEC on 2006-05-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditio
8、ns 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
9、 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
10、 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 K
11、ingdom. EN 50470-1:2006 2 Foreword This European Standard was prepared by the Technical Committee CENELEC TC 13, Equipment for electrical energy measurement and load control. The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC as EN 50470-1 on 2006-05-0
12、1. 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) 2007-05-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2009-05-01 This EN
13、 50470-1 is related to EN 62052-11:2003, Electricity metering equipment (a.c.) General requirements, tests and test conditions Part 11: Metering equipment. The structure of the two standards is similar, modifications in this European Standard are provided in the perspective of compliance with the es
14、sential requirements of the Directive 2004/22/EC on Measuring Instruments (MID). This standard is to be used with: EN 50470-2:2006, Electricity metering equipment (a.c.) Part 2: Particular requirements Electromechanical meters for active energy (class indexes A and B) or EN 50470-3:2006, Electricity
15、 metering equipment (a.c.) Part 3: Particular requirements Static meters for active energy (class indexes A, B and C). 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
16、Directives 89/336/EMC and 2004/22/EC. See Annex ZZ. _ 3 EN 50470-1:2006 Contents 1 Scope.6 2 Normative references .6 3 Terms and definitions .9 3.1 General definitions 9 3.2 Definitions related to the functional elements 11 3.3 Definitions of mechanical elements .13 3.4 Definitions related to insula
17、tion .14 3.5 Definitions of meter quantities .15 3.6 Definitions of influence quantities17 3.7 Definitions of tests.20 3.8 Definitions related to electromechanical meters.20 3.9 Abbreviations 21 4 Standard electrical values 21 4.1 Standard reference voltages21 4.2 Standard currents and current range
18、s .21 4.3 Standard reference frequency .22 5 Mechanical requirements and tests 22 5.1 General mechanical requirements .22 5.2 Case .23 5.2.1 Requirements 23 5.2.2 Mechanical strength tests of meter case23 5.3 Window .24 5.4 Terminals - Terminal block(s) - Protective earth terminal.24 5.5 Terminal co
19、ver(s) 25 5.6 Clearance and creepage distances25 5.7 Insulating encased meter of protective class II 26 5.8 Resistance to heat and fire26 5.9 Protection against penetration of dust and water .27 5.10 Display of measured values.27 5.11 Output device and operation indicator .28 5.11.1 General .28 5.11
20、.2 Mechanical and electrical characteristics.28 5.11.3 Optical characteristics .29 5.12 Marking of meter .29 5.12.1 Name-plates29 5.12.2 Connection diagrams and terminal marking .31 5.13 Accompanying information 31 6 Climatic conditions .31 6.1 Temperature ranges31 6.2 Relative humidity.32 6.3 Tests
21、 of the effect of the climatic environments .32 6.3.1 General .32 6.3.2 Dry heat test (Test B) 32 6.3.3 Cold test (Test A) 33 6.3.4 Damp heat cyclic test (Test Db).33 6.3.5 Protection against solar radiation (Test Sa) .33 EN 50470-1:2006 4 7 Electrical requirements.34 7.1 Voltage range34 7.2 Heating
22、 .34 7.3 Insulation 34 7.3.1 Requirements 34 7.3.2 General test conditions34 7.3.3 Impulse voltage test 35 7.3.4 AC voltage test36 7.4 Electromagnetic compatibility (EMC) .36 7.4.1 Electromagnetic environment.36 7.4.2 General requirements and test conditions37 7.4.3 Critical change value .37 7.4.4 I
23、mmunity to voltage dips and short interruptions 38 7.4.5 Immunity to electrostatic discharges38 7.4.6 Immunity to radiated RF electromagnetic fields39 7.4.7 Immunity to electrical fast transients/bursts .39 7.4.8 Immunity to conducted disturbances, induced by RF fields 40 7.4.9 Immunity to surges 40
24、 7.4.10 Immunity to damped oscillatory waves.41 7.4.11 Immunity to continuous magnetic fields of external origin 41 7.4.12 Immunity to power frequency magnetic fields of external origin41 7.4.13 Radio interference suppression .42 8 Type test 42 8.1 Test conditions42 Annex A (normative) Relationship
25、between ambient air temperature and relative humidity .43 Annex B (normative) Optical test output.44 Annex C (normative) Voltage waveform for the tests of the effect of voltage dips and short interruptions 45 Annex D (informative) Test set-up for electromagnetic compatibility (EMC) tests .46 Annex E
26、 (normative) Electromagnet for testing the influence of continuous magnetic fields of external origin .48 Annex F (informative) Test schedule - Recommended test sequences .49 Annex ZZ (informative) Coverage of Essential Requirements of EC Directives.51 Index 52 Figures Figure A.1 Relationship betwee
27、n ambient air temperature and relative humidity.43 Figure B.1 Test arrangement for the test output.44 Figure B.2 Waveform of the optical test output 44 Figure C.1 Voltage interruptions of U = 100 %, 1 s 45 Figure C.2 Voltage interruptions of U = 100 %, one cycle at rated frequency45 Figure C.3 Volta
28、ge dips of U = 50 % .45 Figure D.1 Test set-up for immunity to radiated RF electromagnetic fields46 Figure D.2 Test set-up for immunity to electrical fast transients/bursts: voltage circuits 46 Figure D.3 Test set-up for immunity to electrical fast transients/bursts: current circuits.47 5 EN 50470-1
29、:2006 Figure E.1 Electromagnet for testing the influence of continuous magnetic fields of external origin.48 Tables Table 1 Standard reference voltages.21 Table 2 Standard values of Itr, Iref and In21 Table 3 Current ranges.22 Table 4 Clearances and creepage distances for insulating encased meter of
30、 protective class I.26 Table 5 Clearances and creepage distances for insulating encased meter of protective class II26 Table 6 Voltage marking.30 Table 7 Upper and lower temperature limits 31 Table 8 Preferred upper and lower temperature limits corresponding to IEC environmental classes.32 Table 9 R
31、elative humidity32 Table 10 Voltage range 34 EN 50470-1:2006 6 1 Scope This European Standard applies to newly manufactured watt-hour meters, measuring active electrical energy, intended for residential, commercial and light industrial use, for use on 50 Hz electrical networks. It specifies general
32、requirements and type tests methods. It applies to electromechanical or static watt-hour meters for indoor and outdoor application, consisting of a measuring element and register(s) enclosed in a meter case. It also applies to operation indicator(s) and test output(s). If the meter has (a) measuring
33、 element(s) for more than one type of energy (multi-energy meters), or when other functional elements, like maximum demand indicators, electronic tariff registers, time switches, ripple control receivers, data communication interfaces, etc. are enclosed in the meter case (multi-function meters) then
34、 this standard applies only for the active energy metering part. This standard distinguishes between: electromechanical and static meters; meters of class indexes A, B and C; direct connected and transformer operated meters; protective class I and protective class II meters; meters intended to be us
35、ed indoors and outdoors. It does not apply to: watt-hour meters where the voltage across the connection terminals exceeds 600 V (line-to-line voltage for meters for polyphase systems); portable meters; reference meters. For rack-mounted meters, the mechanical properties are not covered in this stand
36、ard. The test levels are regarded as minimum values to guarantee the proper functioning of the meter under normal working conditions. For special applications, other test levels might be necessary and should be agreed on between the user and the manufacturer. 2 Normative references The following ref
37、erenced 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. Publication Year Title EN 50470-2 2006 Electricity metering equipm
38、ent (a.c.) Particular requirements Part 2: Electromechanical meters for active energy (class indexes A and B) EN 50470-3 2006 Electricity metering equipment (a.c.) Particular requirements Part 3: Static meters for active energy (class indexes A, B and C) EN 55022 2006 Information technology equipmen
39、t Radio disturbance characteristics Limits and methods of measurement (CISPR 22:2005, mod.) EN 60044-1 + A1 + A2 1999 2000 2003 Instrument transformers Part 1: Current transformers (IEC 60044-1:1996, mod. + A1:2000 + A2:2002) 7 EN 50470-1:2006 Publication Year Title EN 60044-2 + A1 + A2 1999 2000 20
40、03 Instrument transformers Part 2: Inductive voltage transformers (IEC 60044-2:1997, mod. + A1:2000 + A2:2002) EN 60068-2-1 + A1 + A2 1993 1993 1994 Environmental testing Part 2: Tests Tests A: Cold (IEC 60068-2-1:1990 + A1:1993 + A2:1994) EN 60068-2-2 + A1 + A2 1974 1993 1994 Environmental testing
41、Part 2: Tests Tests B: Dry heat (IEC 60068-2-2:1974 + IEC 60068-2-2A:1976 + A1:1993 + A2:1994) EN 60068-2-5 1999 Environmental testing Part 2: Tests Test Sa: Simulated solar radiation at ground level (IEC 60068-2-5:1975) EN 60068-2-6 1995 Environmental testing Part 2: Tests Test Fc: Vibration (sinus
42、oidal) (IEC 60068-2-6:1995 + corrigendum Mar. 1995) EN 60068-2-11 1999 Environmental testing Part 2: Tests Test Ka: Salt mist (IEC 60068-2-11:1981) EN 60068-2-27 1993 Environmental testing Part 2: Tests Test Ea and guidance: Shock (IEC 60068-2-27:1987) EN 60068-2-30 1999 Environmental testing Part 2
43、: Tests Test Db and guidance: Damp heat, cyclic (12 + 12-hour cycle) (IEC 60068-2-30:1980 + A1:1985) EN 60068-2-75 1997 Environmental testing Part 2-75: Tests Test Eh: Hammer tests (IEC 60068-2-75:1997) EN 60085 2004 Electrical insulation Thermal classification (IEC 60085:2004) EN 60359 2002 Electri
44、cal and electronic measurement equipment Expression of performance (IEC 60359:2001) EN 60529 + A1 1991 2000 Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989 + A1:1999) EN 60695-2-10 2001 Fire hazard testing Part 2-10: Glowing/hot-wire based test methods Glow-wire apparatus and
45、common test procedure (IEC 60695-2-10:2000) EN 60695-2-11 2001 Fire hazard testing Part 2-11: Glowing/hot-wire based test methods Glow-wire flammability test method for end-products (IEC 60695-2-11:2000) EN 60721-3-1 1997 Classification of environmental conditions Part 3: Classification of groups of
46、 environmental parameters and their severities Section 1: Storage (IEC 60721-3-1:1997) EN 60721-3-2 1997 Classification of environmental conditions Part 3: Classification of groups of environmental parameters and their severities Section 2: Transportation (IEC 60721-3-2:1997) EN 60721-3-3 1995 Class
47、ification of environmental conditions Part 3: Classification of groups of environmental parameters and their severities Section 3: Stationary use at weatherprotected locations (IEC 60721-3-3:1994) EN 61000-4-1 2000 Electromagnetic compatibility (EMC) Part 4-1: Testing and measurement techniques Over
48、view of IEC 61000-4 series (IEC 61000-4-1:2000) EN 61000-4-2 + A1 + A2 1995 1998 2001 Electromagnetic compatibility (EMC) Part 4-2: Testing and measurement techniques Electrostatic discharge immunity test (IEC 61000-4-2:1995 + A1:1998 + A2:2000) EN 61000-4-3 2002 Electromagnetic compatibility (EMC) Part 4-3: Testing and measurement techniques Radiated, radio-frequency, electromagnetic field immunity test (IEC 61000-4-3:2002) EN 50470-1:2006 8 Publication Year Title EN 61000-4-4 2004 Electromagnetic compatibility (EMC) Part 4-4: Testing and measurement techniques Electrical fast tr