1、BRITISH STANDARDBS EN 62020:1999IEC 62020:1998Incorporating Amendment No.1Electrical Residual current ICS 29.120.50monitors for household and similar uses (RCMs)The European Standard EN 62020:1998, with the incorporation of amendment A1:2005, has the status of a British Standard accessories BS EN 62
2、020:1999This British Standard, having been prepared under the direction of the Electrotechnical Sector Committee was published under the authority of the Standards Committee and comes into effect on 15 January 1999 BSI 2006ISBN 0 580 32002 2indicated by !“.The CENELEC common modifications have been
3、implemented at the appropriate places in the text. The start and finish of each common modification is indicated in the text by tags . Where a common modification has been introduced by amendment, the tags carry the number of the amendment. For example, the common modifications introduced by CENELEC
4、 amendment A11 are indicated by .The UK participation in its preparation was entrusted by Technical Committee ISE/NFE/4, Mechanical testing of metals, to Subcommittee ISE/NFE/4/5, Indentation hardness testing, which has the responsibility to: aid enquirers to understand the text; present to the resp
5、onsible 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.A list of organizations represented on this subcommittee can be obtained on req
6、uest to its secretary.Cross-referencesThe 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 El
7、ectronic Catalogue or of 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.Summary of pagesT
8、his document comprises a front cover, an inside front cover, the EN title page, pages 2 to 79 and a back cover.Amendments issued since publicationAmd. No. Date Comments15841 29 September 2006 See national forewordNational forewordThis British Standard is the official English language version of EN 6
9、2020:1998 including amendment A1:2005. It is identical with IEC 62020:1998, including amendment 1:2003.The start and finish of text introduced or altered by amendment is indicated in the text by tags !“. Tags indicating changes to IEC text carry the number of the IEC amendment. For example, text alt
10、ered by IEC amendment 1 is EUROPISCHE NORMICS 29.120.50Descriptors: Eleconstruction, testsPetit appareillage Contrleursdiffrentiel rsiduel domestiques et an(CEI 62020:1998CENELECEuropean Committee for ElectrotechnicalektrotechniStassart 3y form and byComit Europen de Normalisation EEuropisches Komit
11、ee fr ElCentral Secretariat: rue de 1998 CENELEC All rights of exploitation in anCENELEC members.any means reserved worldwide for Ref. No. EN 62020:1998Standardizationlectrotechniquesche Normung5, B-1050 BrusselsGerman). A version in any other language made by translation under the responsibility of
12、 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, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
13、 Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.This European Standard was approved by CENELEC on 1998-10-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations
14、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 Europea
15、n Standard exists in three official versions (English, French, English versionElectrical accessoriesResidual current monitors for householdand similar uses (RCMs)(IEC 62020:1998)lectrique disolement courant (RCM) pour usages alogues )Elektrisches Installationsmaterial Differenzstrom-berwachungsgerte
16、fr Hausinstallationen und hnliche Verwendungen (RCMs) (IEC 62020:1998)+ A1 May 2005 ctrical household accessory, low-voltage equipment, residual current monitor, definition, characteristics, EUROPEAN STANDARDNORME EUROPENNEEN 62020October 1998EN 62020:1998 2The following dates were fixed:Annexes des
17、ignated “normative” are part of the body of the standard.In this standard, Annex ZA is normative.Annex ZA has been added by CENELEC.Endorsement noticeThe text of the International Standard IEC 62020:1998 was approved by CENELEC as a European Standard without any modification.Foreword to amendment A1
18、The text of document 23E/531/FDIS, future amendment 1 to IEC 62020:1998, was prepared by SC 23E, Circuit-breakers and similar equipment for household use, of IEC TC 23, Electrical accessories, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as amendment A1 to EN 62020:1998
19、 on 2005-03-01.A draft amendment, aiming to improve subclause 8.18.1 of EN 62020:1998, prepared by the Technical Committee CENELEC TC 23E, Circuit breakers and similar devices for household and similar applications, was submitted to the Unique Acceptance Procedure and was approved by CENELEC on 2005
20、-03-01 for inclusion into amendments A1 to EN 62020:1998.The following dates were fixed:Annex ZB has been added by CENELEC.Endorsement noticeThe text of amendment 1:2003 to the International Standard IEC 62020:1998 was approved by CENELEC as an amendment to the European Standard with agreed common m
21、odifications. latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 1999-07-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2001-07-01 latest date by which the ame
22、ndment has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2005-12-01 latest date by which the national standards conflicting with the amendment have to be withdrawn (dow) 2008-03-01ForewordThe text of document 23E/337/FDIS, future edition
23、 1 of IEC 62020, prepared by SC 23E, Circuit-breakers and similar equipment for household use, of IEC TC 23, Electrical accessories, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 62020 on 1998-10-01. BSI 2006BS EN 62020:1999 BSI 2006ContentsPageForeword 2Introducti
24、on 71Scope 72 Normative references 73 Definitions 83.1 Definitions relating to currents flowing from live parts to earth 83.2 Definitions relating to the energization of an RCM 93.3 Definitions relating to the operation and to the functions of residual current monitors 93.4 Definitions relating to v
25、alues and ranges of energizing quantities 103.5 Definitions relating to values and ranges of influencing quantities 113.6 Definitions relating to terminals 123.7 Conditions of operation 133.8 Test 134 Classification 134.1 According to the method of operation 134.2 According to the type of installati
26、on 134.3 According to the number of current paths 134.4 According to the ability to adjust the residual operating current 144.5 According to the possibility of adjusting the time-delay 144.6 According to the protection against external influences 144.7 According to the method of mounting 144.8 Accor
27、ding to the method of connection 144.9 According to the type of connection of the load conductors 144.10 According to fault indicating means 144.11 According to ability to directionally discriminate between supply side and load side residual currents 145 Characteristics of RCMs 155.1 Summary of char
28、acteristics 155.2 Rated quantities and other characteristics 155.3 Standard and preferred values 165.4 Coordination with short-circuit protective devices (SCPDs) (only valid for RCMs classified according to 4.9.2)176 Marking and other product information 187 Standard conditions for operation in serv
29、ice and for installation 207.1 Standard conditions 207.2 Conditions of installation 208 Requirements for construction and operation 208.1 Mechanical design 208.2 Protection against electric shock 248.3 Dielectric properties 248.4 Temperature rise 248.5 Operating characteristic 248.6 Directional disc
30、rimination 258.7 Operational endurance 258.8 Performance at short-circuit currents 258.9 Resistance to mechanical impact 258.10 Resistance to heat 258.11 Resistance to abnormal heat and to fire 253EN 62020:1998 4Page8.12 Test device 268.13 Correct operation of RCMs within the supply voltage range 26
31、8.14 Behaviour of RCMs in case of overcurrents in the main circuit 268.15 Resistance of RCMs to unwanted tripping due to current surges caused by impulse voltages 268.16 Behaviour of RCMs in case of earth fault currents comprising d.c. components 268.17 Reliability 268.18 Electromagnetic compatibili
32、ty (Based on IEC 61543) 268.19 Connection of an external current transformer (CT) 289Tests 299.1 General 299.2 Test conditions 309.3 Test of indelibility of marking 309.4 Test of reliability of screws, current-carrying parts and connections 309.5 Test of reliability of terminals for external conduct
33、ors 319.6 Verification of protection against electric shock 329.7 Test of dielectric properties 339.8 Test of temperature rise 359.9 Verification of the operating characteristics 369.10 Verification of operational endurance 389.11 Verification of short-circuit withstand capability 399.12 Verificatio
34、n of resistance to mechanical impact 439.13 Test of resistance to heat 459.14 Test of resistance to abnormal heat and to fire 469.15 Verification of the operation of the test device at the limits of rated voltage 469.16 Verification of limiting values of the non-operating current under overcurrent c
35、onditions 479.17 Verification of resistance against unwanted operation due to current surges caused by impulse voltages 489.18 Verification of resistance of the insulation against impulse voltages 489.19 Verification of the correct operation at residual currents with d.c. components 499.20 Verificat
36、ion of reliability 509.21 Verification of ageing of electronic components 519.22 Verification of EMC requirements 529.23 Response of the RCM to temporary overvoltages on the LV-side, due to fault conditions on the HV-side 52Annex A (normative) Test sequence and number of samples to be submitted for
37、verification of conformity to the standard 72Annex B (normative) Determination of clearances and creepage distances 75Annex ZA (normative) Normative references to international publications with their corresponding European publications 77Figure 1 Standard test finger (9.6) 53Figure 2a Test circuit
38、for the verification of the operating characteristics for RCMs for use in TN and TT-systems 54Figure 2b Test circuit for the verification of directional discrimination in IT systems for RCMs classified according to 4.11 55Figure 3 Test circuit for the verification of the correct operation of RCMs in
39、 the case of residual pulsating direct currents 56Figure 4 Test circuit for the verification of the correct operation of RCMs in the case of residual pulsating direct currents superimposed by smooth direct current of 0,006 A 56 BSI 2006BS EN 62020:1999 BSI 2006PageFigure 5 Test circuit for the verif
40、ication of the co-ordination with a SCPD of a RCM with two current paths (9.11)57Figure 6 Test circuit for the verification of the co-ordination with a SCPD of a RCM with three current paths in a three phase circuit (9.11)58Figure 7 Test circuit for the verification of the co-ordination with a SCPD
41、of a RCM with four current paths on a three-phase circuit with neutral (9.11)59Figure 8 Test apparatus for the verification of the minimum I2t and Ipvalues to be withstood by the RCM 9.11.2.1a) 60Figure 9 Mechanical impact test apparatus (9.12.1) 61Figure 10 Striking element for pendulum impact test
42、 apparatus (9.12.2) 62Figure 11 Mounting support for sample for mechanical impact test (9.12.1)6Figure 12 Example of mounting an unenclosed RCM for mechanical impact test (9.12.1 3Figure 13 Example of mounting of panel mounting type RCM for the mechanical impact test (9.12.1)64Figure 14 Application
43、of force for mechanical test of rail-mounted RCM (9.12.2 5Figure 15 Ball-pressure test apparatus (9.13.2) 65Figure 16 Test circuit for the verification of the limiting value of overcurrent in the case of single-phase load through a three-phase RCM (9.16.2 6Figure 17 Current ring wave 0,5 4s/100 kHz
44、67Figure 18 Test circuit for the ring-wave test at RCMs 67Figure 19 Stabilizing period for reliability test (9.20.1.3) 68Figure 20 Reliability test cycle (9.20.1.3) 69Figure 21 Example for test circuit for verification of ageing of electronic components (9.21)70Figure 22a RCMs without monitored line
45、s connected 71Figure 22b RCMs with monitored lines connected 71Figure B.1 Illustrations of the application of creepage distances 76Figure B.2 Illustrations of the application of creepage distances 76Figure B.3 Illustrations of the application of creepage distances 76Figure B.4 Illustrations of the a
46、pplication of creepage distances 76Figure B.5 Illustrations of the application of creepage distances 76Figure B.6 Illustrations of the application of creepage distances 76Figure B.7 Illustrations of the application of creepage distances 77Figure B.8 Illustrations of the application of creepage dista
47、nces 77Figure B.9 Illustrations of the application of creepage distances 77Figure B.10 Illustrations of the application of creepage distances 77Table 1 Standard conditions for operation in service 19Table 2 Clearances and creepage distances 21Table 3 Connectable cross-sections of copper conductors f
48、or screw-type terminals 23Table 4 Temperature-rise values 25Table Z.1 Low frequency immunity test conditions 27Table 15 EMC Tests 28Table 5 List of type tests depending on RCM classification 29Table 6 Test copper conductors corresponding to the rated currents 29Table 7 Screw thread diameters and app
49、lied torques 31Table 8 Pulling forces 32Table 9 Conductor dimensions 325EN 62020:1998 6PageTable 16 Summary of the tests contained in 9.7.2, 9.7.3 and 9.7.4 35Table 11 Silver wire diameter as a function of rated current and short-circuit currents 41Table 12 Minimum values of I2t and Ip42Table 13 Power factors for short-circuit tests 42Table 14 Acutating current ranges 49Table A.1 Test sequences 72Table A.2 Number of samples submitted to tests 73Table A.
