1、BRITISH STANDARDBS EN 62020:1999IEC 62020:1998Incorporating Amendment No.1Electrical accessories Residual current monitors 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 ICS 29.120.50BS 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 2National forewordThis British Standard is the official Engl
3、ish language version of EN 62020:1998 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 amen
4、dment. For example, text altered by IEC amendment 1 is indicated by !“.The CENELEC common modifications have been 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
5、amendment, the tags carry the number of the amendment. For example, the common modifications introduced by CENELEC 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, Indent
6、ation hardness testing, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developm
7、ents and promulgate them in the UK.A list of organizations represented on this subcommittee can be obtained on request 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 th
8、e 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 provisions of a contract. Users are responsible for its correct applicati
9、on. Compliance with a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis 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
10、 2006 See national forewordEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 62020October 1998+ A1 May 2005 ICS 29.120.50Descriptors: Electrical household accessory, low-voltage equipment, residual current monitor, definition, characteristics, construction, testsEnglish versionElectrical accessories
11、Residual current monitors for householdand similar uses (RCMs)(IEC 62020:1998)Petit appareillage lectrique Contrleurs disolement courant diffrentiel rsiduel (RCM) pour usages domestiques et analogues (CEI 62020:1998)Elektrisches Installationsmaterial Differenzstrom-berwachungsgerte fr Hausinstallati
12、onen und hnliche Verwendungen (RCMs) (IEC 62020:1998)This European Standard was approved by CENELEC on 1998-10-01. 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
13、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 mad
14、e 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, Czech Republic, Denmark, Estonia, Finland
15、, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.CENELECEuropean Committee for Electrotechnical StandardizationComit Europen de Normalisation Ele
16、ctrotechniqueEuropisches Komitee fr Elektrotechnische NormungCentral Secretariat: rue de Stassart 35, B-1050 Brussels 1998 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.Ref. No. EN 62020:1998EN 62020:1998 2 BSI 2006ForewordThe text of document
17、 23E/337/FDIS, future edition 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.The following dates were fixed:Annexe
18、s designated “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 amendme
19、nt A1The 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
20、:1998 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
21、 2005-03-01 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 com
22、mon modifications. 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 th
23、e amendment 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) 2008-03-01BS EN 62020:1999 BSI 2006 3ContentsPageForeword 2Int
24、roduction 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 relati
25、ng to values 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 ins
26、tallation 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.
27、8 According 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
28、of characteristics 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
29、in service 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 Direction
30、al discrimination 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 25EN 62020:1998 4 BSI 2006Page8.12 Test device 268.13 Correct operation of RCMs within the supply v
31、oltage range 268.14 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 Electromagne
32、tic compatibility (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 e
33、xternal conductors 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
34、.12 Verification 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 unde
35、r overcurrent conditions 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 4
36、99.20 Verification 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
37、 submitted for 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 2
38、a Test circuit 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 opera
39、tion of RCMs in 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 56BS EN 62020:1999 BSI 2006 5PageFigure 5 Test circuit for t
40、he verification 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
41、 a SCPD 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 imp
42、act test 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 Appl
43、ication 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/
44、100 kHz 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 monito
45、red lines 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
46、of the application 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 creepa
47、ge distances 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 cond
48、uctors for 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
49、 and applied torques 31Table 8 Pulling forces 32Table 9 Conductor dimensions 32EN 62020:1998 6 BSI 2006PageTable 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
