1、BRITISH STANDARDBS EN 60423:2007Conduit systems for cable management Outside diameters of conduits for electrical installations and threads for conduits and fittingsThe European Standard EN 60423:2007 has the status of a British StandardICS 29.120.10g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g
2、55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 60423:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 December 2007 BSI 2007ISB
3、N 978 0 580 56790 2National forewordThis British Standard is the UK implementation of EN 60423:2007. It is identical to IEC 60423:2007. It supersedes BS EN 60423:1995 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee PEL/213, Cable management.A list of
4、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 obli
5、gations.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARD EN 60423 NORME EUROPENNE EUROPISCHE NORM October 2007 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Ce
6、ntral Secretariat: rue de Stassart 35, B - 1050 Brussels 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60423:2007 E ICS 29.120.10 Supersedes EN 60423:1994English version Conduit systems for cable management - Outside diamet
7、ers of conduits for electrical installations and threads for conduits and fittings (IEC 60423:2007) Systmes de conduits pour la gestion du cblage - Diamtres extrieurs des conduits pour installations lectriques et filetages pour conduits et accessoires (CEI 60423:2007) Elektroinstallationsrohrsysteme
8、 fr elektrische Energie und fr Informationen - Auendurchmesser von Elektroinstallationsrohren und Gewinde fr Elektroinstallationsrohre und deren Zubehr (IEC 60423:2007) This European Standard was approved by CENELEC on 2007-10-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Reg
9、ulations 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. T
10、his 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 memb
11、ers are the national electrotechnical committees of Austria, Belgium, Bulgaria, 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, Sloven
12、ia, Spain, Sweden, Switzerland and the United Kingdom. Foreword The text of document 23A/541/FDIS, future edition 3 of IEC 60423, prepared by SC 23A, Cable management systems, of IEC TC 23, Electrical accessories, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60423
13、 on 2007-10-01. This European Standard supersedes EN 60423:1994. The following main changes have been made to EN 60423:1994: revised figures and tables plus editorial and normative reference updates; conduit range increased to 110 mm outside diameter. The following dates were fixed: latest date by w
14、hich the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2008-07-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2010-10-01 Annex ZA has been added by CENELEC. _ Endorsement notice T
15、he text of the International Standard IEC 60423:2007 was approved by CENELEC as a European Standard without any modification. _ BS EN 60423:2007 2 CONTENTS INTRODUCTION.4 1 Scope.5 2 Normative references5 3 Outside diameters and threads .5 4 Gauges.5 5 Samples of conduit .6 Bibliography12 Figure 1 B
16、asic profile of screw threads .8 Figure 2 Gauges for checking maximum outside diameters of threadable conduits9 Figure 3a Gauges for checking minimum outside diameters of rigid metallic threadable conduits.10 Figure 3b Gauges for checking minimum outside diameters of threadable conduits other than r
17、igid metallic .11 Figure 3 Gauges for checking minimum outside diameters of threadable conduits.11 Table 1 Outside diameters for threadable conduits and thread details for conduits and associated fittings .7 Table 2 Outside diameters for non-threadable conduit 8 Annex ZA (normative) Normative refere
18、nces to international publications with their corresponding European publications 13BS EN 60423:2007 3 INTRODUCTION The mechanical performance of the threadable parts of the conduit system will be a function of material and wall thickness, which is specified in the appropriate product standard (IEC
19、61386 series). BS EN 60423:2007 4 CONDUIT SYSTEMS FOR CABLE MANAGEMENT OUTSIDE DIAMETERS OF CONDUITS FOR ELECTRICAL INSTALLATIONS AND THREADS FOR CONDUITS AND FITTINGS 1 Scope This International Standard specifies outside diameters for conduits used in electrical installations or in communication sy
20、stems and the dimensional requirements for threads. It also specifies the dimensional requirements for threads used in associated fittings. It is not applicable to extra heavy-duty electrical rigid steel conduits specified in IEC 60981. 2 Normative references The following referenced documents are i
21、ndispensable 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. ISO 68-1:1998, ISO general purpose screw threads Basic profile Part 1: Metric screw threa
22、ds ISO 965-1:1998, ISO general-purpose metric threads Tolerances Part 1: Principles and basic data ISO 1502:1996, ISO general-purpose metric screw threads Gauges and gauging 3 Outside diameters and threads The outside diameters, tolerances and details of threadable conduit and external and internal
23、metric threads are given in Table 1. Details of the thread form are given in Figure 1, which is based on ISO 68-1 and ISO 965-1. Outside diameters and tolerances of non-threadable conduit are given in Table 2. 4 Gauges External threads are checked by means of threaded GO ring gauges and plain NO-GO
24、ring gauges specified in ISO 1502. Internal threads are checked by means of threaded GO plug gauges and plain NO-GO plug gauges specified in ISO 1502. Outside diameters of threadable conduits are checked by means of GO ring gauges specified in Figure 2 and NO-GO gap gauges specified in Figure 3a for
25、 threadable rigid metal conduits, or NO-GO ring gauges specified in Figure 3b for threadable conduits other than rigid metal. BS EN 60423:2007 5 Outside diameters of non-threadable conduits may be checked by any suitable measuring 5 Samples of conduit The samples shall be (500 5) mm in length. BS EN
26、 60423:2007 6 Table 1 Outside diameters for threadable conduits and thread details for conduits and associated fittings DimensionsinmillimeOutside diameters and thread for conduitsExternal threads Internal threads Major diameter (d) Effective diameter (d2) Minor diameter (d1) Majordiameter (D) Effec
27、tive diameter (D2) Minor diameter (D1) Outside diameters Metricthreads Class of fit Pitch max. min. max. min. max. min. min. max. min. max. min. 6 0/0,1 M6 0,756 g/6H 0,75 5,978 5,838 5,491 5,391 5,058 4,929 6,000 5,645 5,513 5,3785,188 8 0/0,2 M8 1 8 g/7H 1,00 7,974 7,694 7,324 7,144 6,747 6,528 8,
28、000 7,540 7,350 7,2176,917 10 0/0,2 M10 1 8 g/7H 1,00 9,974 9,694 9,324 9,144 8,747 8,528 10,000 9,540 9,350 9,2178,917 12 0/0,3 M12 1,58 g/7H 1,50 11,968 11,593 10,994 10,770 10,128 9,846 12,000 11,262 11,026 10,75110,376 16 0/0,3 M16 1,58 g/7H 1,50 15,968 15,593 14,994 14,770 14,128 13,846 16,000
29、15,262 15,026 14,75114,376 20 0/0,3 M20 1,58 g/7H 1,50 19,968 19,593 18,994 18,770 18,128 17,846 20,000 19,262 19,026 18,75118,376 25 0/0,4 M25 1,58 g/7H 1,50 24,968 24,593 23,994 23,758 23,128 22,834 25,000 24,276 24,026 23,75123,376 32 0/0,4 M32 1,58 g/7H 1,50 31,968 31,593 30,994 30,758 30,128 29
30、,834 32,000 31,276 31,026 30,75130,376 40 0/0,4 M40 1,58 g/7H 1,50 39,968 39,593 38,994 38,758 38,128 37,834 40,000 39,276 39,026 38,75138,376 50 0/0,4 M50 1,58 g/7H 1,50 49,968 49,593 48,994 48,744 48,128 47,820 50,000 49,291 49,026 46,75148,376 63 0/0,4 M63 1,58 g/7H 1,50 62,968 62,593 61,994 61,7
31、44 61,128 60,820 63,000 62,291 62,026 61,75161,376 75 0/0,4 M75 1,58 g/7H 1,50 74,698 74,593 73,994 73,744 73,128 72,820 75,000 74,291 74,026 73,75173,376 90 0/-0,5 M90 2 8 g/7H 2,00 89,962 89,512 88,663 88,383 87,508 87,151 90,000 89,001 88,701 88,31087,835 110 0/0,5 M110 2 8 g/7H 2,00 109,962 109,
32、512 108,663 108,383 107,508 107,151 110,000 109,001 108,701 108,310107,835 NOTESee Figure 1 for details.BS EN 60423:2007 7 Table 2 Outside diameters for non-threadable conduit Outside diameters mm Tolerance mm 6 +0,0 0,1 8 +0,0 0,2 10 +0,0 0,2 12 +0,0 0,3 16 +0,0 0,3 20 +0,0 0,3 25 +0,0 0,4 32 +0,0
33、0,4 40 +0,0 0,4 50 +0,0 0,5 63 +0,0 0,6 75 +0,0 0,7 90 +0,0 0,9 110 +0,0 1,1 P P 2 P 8 P 4 3/8 H H 8 H 4 H 5/8 H D,d D2,d2D1,d130 60 90 Axis of screw thread IEC 1566/073/8 H = 0,324 76 P H = 0,866 03 P 5/8 H = 0,541 27 P P = Pitch Figure 1 Basic profile of screw threads BS EN 60423:2007 8 ddg15 0,3b
34、b Slightly rounded edges IEC 1567/07Admissible wear: +0,01 mm Material: steel It shall be possible to slide the gauge completely over the conduit without excessive force. For conduits normally provided with a protective coating, this test may be carried out before the application of the protective c
35、oating. Size mm dg a mm b mm d mm 6 6,04 8 32 8 8,04 32 10 10,04 8 32 12 12,04 10 38 16 16,04 12 45 20 20,04 12 45 25 25,04 16 60 32 32,04 18 70 40 40,04 18 70 50 50,04 20 85 63 63,04 20 100 75 75,04 24 120 NOTE For conduits above 75 mm, alternate appropriate measuring methods may be used. aManufact
36、uring tolerance: 000010,+mm Figure 2 Gauges for checking maximum outside diameters of threadable conduits BS EN 60423:2007 9 e2e1g c s Slightly roundededges IEC 1568/07 Material: steel It shall not be possible to pass the gauge over the conduit, in any position, without excessive force. C Manufactur
37、ing tolerance Admissible wear e1e2g s Size mm mm mm mm mm mm mm 6 5,900 +0,000 0,016 +0,016 0,000 8 7,800 +0,000 0,016 +0,016 0,000 10 9,800 +0,000 0,016 +0,016 0,000 5 11 12 7 12 11,700 +0,000 0,018 +0,018 0,000 6 13 14 8 16 15,700 +0,000 0,018 +0,018 0,000 8 17 18 8 20 19,700 +0,000 0,022 +0,022 0
38、,000 10 23 27 9 25 24,600 +0,000 0,022 +0,022 0,000 10 23 27 9 32 31,600 +0,000 0,025 +0,025 0,000 12 29 34 10 40 39,600 +0,000 0,030 +0,030 0,000 14 35 42 10 50 49,600 +0,000 0,030 +0,030 0,000 16 42 52 12 63 62,600 +0,000 0,030 +0,030 0,000 18 49 65 12 75 74,600 +0,000 0,030 +0,030 0,000 20 55 77
39、14 NOTE For conduits over 75 mm, alternate appropriate measuring methods may be used. Figure 3a Gauges for checking minimum outside diameters of rigid metallic threadable conduits BS EN 60423:2007 10 ddg15 0,3bb Slightly rounded edges IEC 1567/07Material: steel It shall not be possible to slide the
40、gauge completely over the conduit under its own weight. Size dga mm b mm d mm 6 5,90 16 32 8 7,80 16 32 10 9,80 16 32 12 11,70 20 38 16 15,70 24 45 20 19,70 24 45 25 24,60 32 60 32 31,60 36 70 40 39,60 36 70 50 49,50 40 85 63 62,40 40 100 75 74,30 48 120 NOTE For conduits over 75 mm, alternate appro
41、priate measuring methods may be used. a Manufacturing tolerance: 000010,+mm Admissible wear: 010000,+mmFigure 3b Gauges for checking minimum outside diameters of threadable conduits other than rigid metallic Figure 3 Gauges for checking minimum outside diameters of threadable conduits BS EN 60423:20
42、07 11 Bibliography IEC 60981, Extra heavy-duty electrical rigid steel conduits IEC 61386 (all parts), Conduit systems for electrical installations _ NOTE Harmonized in EN 61386 series (not modified). BS EN 60423:2007 12 Annex ZA (normative) Normative references to international publications with the
43、ir corresponding European publications 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. NOTE When
44、an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year ISO 68-1 1998 ISO general purpose screw threads - Basic profile - Part 1: Metric screw threads ISO 965-1 1998 ISO general-purpose metric screw thr
45、eads - Tolerances - Part 1: Principles and basic data ISO 1502 1996 ISO general-purpose metric screw threads - Gauges and gauging BS EN 60423:2007 13 BS EN 60423:2007BSI389 Chiswick High RoadLondonW4 4ALBSI British Standards InstitutionBSI is the independent national body responsible for preparing B
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