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1、BRITISH STANDARD BS EN 60999-2:2003 Connecting devices Electrical copper conductors Safety requirements for screw-type and screwless-type clamping units Part 2: Particular requirements for clamping units for conductors above 35 mm2 up to 300 mm2 (included) The European Standard EN 60999-2:2003 has t
2、he status of a British Standard ICS 29.120.20; 29.130.20 ? Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 08:28:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 60999-2:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 12 August
3、 2003 BSI 12 August 2003 ISBN 0 580 42394 8 National foreword This British Standard is the official English language version of EN 60999-2:2003. It is identical with IEC 60999-2:2003. The UK participation in its preparation was entrusted by Technical Committee PEL/17, Switchgear, controlgear, and HV
4、-LV co-ordination, to Subcommittee PEL/17/2, Low-voltage switchgear and controlgear, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European
5、 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 Electronic Catalogue or of British Standards Online. This publication does not purport to include all t
6、he 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. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on t
7、he interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 18, an inside back cover
8、 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 08:28:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD E
9、N 60999-2 NORME EUROPENNE EUROPISCHE NORM July 2003 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2003 CENELEC - All rights of
10、 exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60999-2:2003 E ICS 29.120.20;29.130.20 English version Connecting devices Electrical copper conductors Safety requirements for screw-type and screwless-type clamping units Part 2: Particular requirements f
11、or clamping units for conductors above 35 mm up to 300 mm (included) (IEC 60999-2:2003) Dispositifs de connexion Conducteurs lectriques en cuivre - Prescriptions de scurit pour organes de serrage vis et sans vis Partie 2: Prescriptions particulires pour les organes de serrage pour conducteurs au-des
12、sus de 35 mm et jusqu 300 mm (inclus) (CEI 60999-2:2003) Verbindungsmaterial Elektrische Kupferleiter - Sicherheitsanforderungen fr Schraubklemmstellen und schraubenlose Klemmstellen Teil 2: Besondere Anforderungen fr Klemmstellen fr Leiter ber 35 mm bis einschlielich 300 mm (IEC 60999-2:2003) This
13、European Standard was approved by CENELEC on 2003-07-01. 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 refer
14、ences 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 CENELEC m
15、ember 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, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Lithuania,
16、Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 08:28:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 69909-:20023 - - 2 Foreword The text of document 17B/1274/FDIS, future edition 2 of
17、 IEC 60999-2, prepared by SC 17B, Low- voltage switchgear and controlgear, of IEC TC 17, Switchgear and controlgear, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60999-2 on 2003-07-01. This part of EN 60999 should be read in conjunction with EN 60999-1:2000. The f
18、ollowing 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) 2004-04-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2006-07-01 As the AWG size
19、s are not used in Europe the following apply: - Clause 6: delete the note; - Table 1: delete columns 4, 5 and 6; - Table 1: delete the text of the note after “IEC 60228A”; - Table 2: delete column 2; - Table C.2: delete Table C.2 completely; - Bibliography: delete the bibliography completely. Annexe
20、s designated “normative“ are part of the body of the standard. Annexes designated “informative“ are given for information only. In this standard, annexes B, C and ZA are normative and annex A is informative. Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Stand
21、ard IEC 60999-2:2003 was approved by CENELEC as a European Standard without any modification. _ Page 2 EN 609992:2003 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 08:28:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CONTENTS INTRODUCTION.4 1 Scope.5 2 Normative references .5 3 Definitions 5
22、 4 General 6 5 General notes on tests .6 6 Main characteristics6 7 Connection of conductors.6 8 Constructional requirements.7 9 Tests8 Annex A (informative) Relationship between mm2 and AWG/kcmil sizes 14 Annex B (normative) Conductor rated cross-section and corresponding gauges.15 Annex C (normativ
23、e) Construction of stranded and flexible conductors 16 Annex ZA (normative) Normative references to international publications with their corresponding European publications17 Bibliography18 Figure 1 Test apparatus according to 9.4.13 Figure 2 Gauges of form A and form B.13 Table 1 Relationship betw
24、een rated cross-section and diameter of conductors 7 Table 2 Test values for flexion and pull-out tests for round copper conductors.10 Table 3 Tightening torques for the verification of the mechanical strength of screw- type terminals .11 Table A.1 Approximate relationship between mm2 and AWG/kcmil
25、sizes14 Table B.1 Rated cross-section and corresponding gauges .15 Table C.1 Construction of stranded and flexible conductors according to rated cross-sections.16 Table C.2 Construction of stranded and flexible conductors according to AWG/kcmil sizes.16 Page 3 EN 609992:2003 Licensed Copy: sheffield
26、un sheffieldun, na, Fri Nov 10 08:28:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTRODUCTION This safety standard is a continuation of IEC 60999-1 and covers clamping units for copper conductors above 35 mm2 up to and including 300 mm2. The scope of IEC 60999-1 is limited up to 35 mm2. This stand
27、ard gives guidance to technical committees using clamping units above 35 mm2 up to 300 mm2. Page 4 EN 609992:2003 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 08:28:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CONNECTING DEVICES ELECTRICAL COPPER CONDUCTORS SAFETY REQUIREMENTS FOR SCREW-T
28、YPE AND SCREWLESS-TYPE CLAMPING UNITS Part 2: Particular requirements for clamping units for conductors above 35 mm2 up to 300 mm2 (included) 1 Scope This part of IEC 60999 applies to screw-type and screwless-type clamping units for connecting devices, either as separate entities or as integral part
29、s of equipment, for the connection of electrical copper conductors (complying with IEC 60228), rigid stranded and/or flexible, having a cross-section above 35 mm2 and up to and including 300 mm2 and equivalent AWG/kcmil sizes with a rated voltage not exceeding 1 000 V a.c. and a frequency up to and
30、including 1 000 Hz and 1 500 V d.c. It applies to clamping units primarily suitable for connecting unprepared conductors. This standard does not apply to clamping units: for connection by crimping or soldering; for non-universal clamping units defined in 3.10.2 of IEC 60999-1. 2 Normative references
31、 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. IEC 60228:1978, Conductors of insulated cables A
32、mendment 1 (1993) IEC 60228A:1982, Conductors of insulated cables First supplement IEC 60999-1:1999, Connecting devices Electrical copper conductors Safety requirements for screw-type and screwless-type clamping units Part 1: General requirements and particular requirements for clamping units for co
33、nductors from 0,2 mm2 up to 35 mm2 (included) 3 Definitions For the purposes of this part of IEC 60999, Clause 3 of IEC 60999-1 applies, with the following modifications. Definition 3.10.2 of IEC 60999-1 is not applicable. Page 5 EN 609992:2003 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10
34、08:28:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 3.11 rated cross-section of a clamping unit value of connectable conductor cross-section stated by the manufacturer and to which certain thermal, mechanical and electrical requirements are referred NOTE The rated cross-section is the equivalent of
35、the rated connecting capacity in accordance with 3.11 of IEC 60999-1. 4 General Clause 4 of IEC 60999-1 applies. 5 General notes on tests Clause 5 of IEC 60999-1 applies. 6 Main characteristics The standard rated cross-sections of a clamping unit are: 50 mm2, 70 mm2, 95 mm2, 120 mm2, 150 mm2, 185 mm
36、2, 240 mm2 and 300 mm2. NOTE For the time being, in some countries, the designation by wire gauges (e.g. AWG in USA and Canada) may be used instead of the cross-sections expressed in square millimetres. For the approximate relationship between square millimetres and AWG/kcmil see Annex A. 7 Connecti
37、on of conductors 7.1 In general, clamping units are suitable to accept one conductor only. Certain types may also be used for two or more conductors of the same or of different nominal cross-sections or compositions. Clamping units shall accept unprepared conductors. NOTE Screw-type clamping units a
38、re not suitable for the connection of flexible conductors with tin soldered ends. 7.2 Each clamping unit, if not otherwise stated in the relevant product standard, shall, in addition to its rated cross-section, accept at least the two successive smaller cross-sections (e.g. a clamping unit having th
39、e rated cross-section of 70 mm2 shall reliably clamp a conductor of the same type of 35 mm2, 50 mm2 or 70 mm2). If a clamping unit covers a range larger than the minimum, this shall be marked either on the clamping unit or stated in the manufacturers literature. 7.3 The theoretical diameter of the l
40、argest conductor and the relationship between the rated cross-section and connectable conductors are given in Table 1. Page 6 EN 609992:2003 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 08:28:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Table 1 Relationship between rated cross-section and
41、 diameter of conductors Theoretical diameter of the largest conductor Metric AWG/kcmil Rated cross- section Rigid stranded Flexible a Gauge Rigid stranded Flexible Connectable conductors mm mm mm mm mm Rigid Flexible 50 9,1 11,0 0 9,64 12,08 70 11,0 13,1 00 11,17 13,54 95 12,9 15,1 000 12,54 15,33 0
42、000 14,08 17,22 120 14,5 17,0 250 15,34 19,01 150 16,2 19,0 300 16,80 20,48 185 18,0 21,0 350 18,16 22,05 400 19,42 24,05 240 20,6 24,0 500 21,68 26,57 300 23,1 27,0 600 23,82 30,03 To be specified in the relevant product standard a Dimensions for class 5 flexible conductors only, according to IEC 6
43、0228A. NOTE Diameters of the largest rigid and flexible conductors are based on Table 1 and Table 3 of IEC 60228A and, for AWG conductors, on ASTM B 172-71 11, ICEA Publication S-19-81 2, ICEA Publication S-66-524 3 and ICEA Publication S-66-516 4. 7.4 Clamping units, unless otherwise specified by t
44、he manufacturer, shall accept rigid stranded and flexible conductors as indicated in Table 1, in which case no markings are necessary. If a clamping unit according to the manufacturers specification can accept only one type of conductor (rigid or flexible), this shall be either clearly marked on the
45、 end product, respectively by the letters “r” or “f”, or indicated on the smallest package unit and/or in the technical information. Compliance shall be checked by inspection and by the tests of 9.1 and 9.6. 7.5 On screwless-type clamping units, the connection or disconnection of conductors shall be
46、 made by the use of a general purpose tool, or of a convenient device integral with the clamping unit, in order to open it for the insertion or the withdrawal of the conductors. Compliance shall be checked by inspection and by the test of 9.3. 8 Constructional requirements Clause 8 of IEC 60999-1 ap
47、plies with the following modifications. Replace 8.1.1 of IEC 60999-1 as follows: 1 Figures in square brackets refer to the bibliography. Page 7 EN 609992:2003 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 08:28:39 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 8.1.1 Parts of clamping units main
48、ly intended for carrying current, shall be of copper, or an alloy containing at least 58 % copper for parts that are worked cold or at least 50 % copper for other parts, or other metal with surface protection offering a resistance to corrosion not less than that of copper and having mechanical prope
49、rties at least equivalent. Compliance shall be checked by inspection and by the test specified in the relevant product standard. 8.1.2 Not applicable. 8.4 The note is not applicable. 9 Tests 9.1 The insertion of the largest conductor is checked by the test according to Annex B, or by the insertion of the largest conductor after the insulation has been removed and t