1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58purposes Part 2-4: Particular requirements for twist-on connecting devicesThe European Standard EN
2、60998-2-4:2005 has the status of a British StandardICS 29.120.20Connecting devices for low voltage circuits for household and similar BRITISH STANDARDBS EN 60998-2-4:2005BS EN 60998-2-4:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 9 No
3、vember 2005 BSI 9 November 2005ISBN 0 580 46490 3A list of organizations represented on this committee 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 Catalog
4、ue 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 the necessary provisions of a contract. Users are responsible for its correc
5、t application.Compliance with a British Standard does not of itself confer immunity from legal obligations.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.Summary of pagesT
6、his document comprises a front cover, an inside front cover, the EN title page, pages 2 to 22, an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsCENELEC amendm
7、ent A11 are indicated by . The UK participation in its preparation was entrusted to Technical Committee PEL/23/2, Connecting devices, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any National forewordThis British S
8、tandard is the official English language version of EN 60998-2-4:2005. It was derived by CENELEC from IEC 60998-2-4:2004. It supersedes BS EN 60998-2-4:1993 which will be withdrawn on 1 March 2008.The CENELEC common modifications have been implemented at the appropriate places in the text. The start
9、 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 EUROPEAN STANDARD EN 60998-2-4 NORME EUROPENNE EUROPISCHE NORM Apri
10、l 2005 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 ICS 29.120.20 Supersedes EN 60998-2-4:1993English version Connecting devi
11、ces for low voltage circuits for household and similar purposes Part 2-4: Particular requirements for twist-on connecting devices (IEC 60998-2-4:2004, modified) Dispositifs de connexion pour circuits basse tension pour usage domestique et analogue Partie 2-4: Rgles particulires pour dispositifs de c
12、onnexion par pissure (CEI 60998-2-4:2004, modifie) Verbindungsmaterial fr Niederspannungs-Stromkreise fr Haushalt und hnliche Zwecke Teil 2-4: Besondere Anforderungen an Drehklemmen (IEC 60998-2-4:2004, modifiziert) This European Standard was approved by CENELEC on 2005-03-01. CENELEC members are bo
13、und 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 references concerning such national standards may be obtained on application to the
14、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 member into its own language and notified to the Central Secretariat has the sam
15、e 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, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portug
16、al, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60998-2-4:2005 E EN 60998-2-4:2005 - 2 - Foreword The text of the International Standard IEC 60998-2-4:200
17、4, prepared by SC 23F, Connecting devices, of IEC TC 23, Electrical accessories, together with common modifications prepared by the CENELEC Reporting Secretariat SR 23F, was submitted to the formal vote and was approved by CENELEC as EN 60998-2-4 on 2005-03-01. This European Standard supersedes EN 6
18、0998-2-4:1993. It introduces an additional explanation for the temperature cycling test. 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) 2006-03-01 latest date by which the na
19、tional standards conflicting with the EN have to be withdrawn (dow) 2008-03-01 This Part 2-4 is intended to be used in conjunction with EN 60998-1:2004. It supplements or modifies the corresponding clauses of EN 60998-1 so as to convert it into the European Standard: Particular requirements for twis
20、t-on connecting devices. Where a particular subclause of Part 1 is not mentioned in this Part 2-4, that subclause applies as far as is reasonable. Where this Part 2-4 states “addition“, “modification“ or “replacement“, the relevant text of Part 1 is to be adapted accordingly. In this standard a) the
21、 following print types are used: - requirements proper: in roman type, - test specifications: in italic type, - explanatory matter: in smaller roman type; b) the following numbering system is used: - subclauses and figures which are additional to those in Part 1 are numbered starting from 101, - add
22、itional annexes are lettered AA, BB, etc., - annexes and notes which are additional to those in IEC 60998-2-4 are prefixed with the letter “Z“. _ Endorsement notice The text of the International Standard IEC 60998-2-4:2004 was approved by CENELEC as a European Standard with agreed common modificatio
23、ns. _ 3 EN 60998-2-4:2005 CONTENTS 1 Scope 4 2 Normative references .4 3 Terms and definitions .4 4 General5 5 General notes on tests5 6 Main characteristics6 7 Classification6 8 Marking6 9 Protection against electric shock.7 10 Connection of conductors .7 11 Construction.8 12 Resistance to ageing,
24、to humid conditions, to ingress of solid foreign objects and to harmful ingress of water8 13 Insulation resistance and electric strength.9 14 Mechanical strength .10 15 Temperature rise 13 16 Resistance to heat16 17 Clearances and creepage distances16 18 Resistance of insulating material to abnormal
25、 heat and fire .16 19 Resistance of insulating material to tracking16 20 EMC requirements16 Annex A (informative) Example for temperature cycling test according to 15.102.120 Annex ZA (normative) Normative references to international publications with their corresponding European publications22 Anne
26、x ZB (normative) Special national conditions .22 Figure 101 Gripping dimension.17 Figure 102 Examples of torque calculations of 14.103.18 Figure 103 Example for the application of the pull-out force in the axis of TOCD .18 Figure 104 Test apparatus according to 14.101 19 Figure AA.1 Example for temp
27、erature cycling test according to 15.102.1 for TOCDs designed to accept all type of conductors 20 Table 101 Number of new samples and sequence applicable to the tests 5 Table 102 Relationship between mass, height and cross-sectional area of conductors 11 Table 103 Number of conductors to be removed
28、.11 Table 104 Relationship between pull force and cross-sectional area of conductors13 EN 60998-2-4:2005 4 CONNECTING DEVICES FOR LOW-VOLTAGE CIRCUITS FOR HOUSEHOLD AND SIMILAR PURPOSES Part 2-4: Particular requirements for twist-on connecting devices 1 Scope Replacement: This International Standard
29、 applies to twist-on connecting devices for connecting two or more unprepared rigid and/or flexible copper conductors having a cross-sectional area of 0,5 mm2up to and including 16 mm2and complying with IEC 60228, the total cross-sectional area of the connected conductors not exceeding 35 mm2. It co
30、vers low voltage circuits up to 1 000 V a.c. and 1 500 V d.c. where electrical energy is utilized for household and similar purposes. This standard covers TOCDs primarily designed for application by hand. However, certain TOCDs, for example for large cross-sections, may require the use of a tool des
31、igned for that particular TOCD. NOTE Z1 See Annex ZB for special national conditions. 2 Normative references This clause of Part 1 is applicable. 3 Terms and definitions This clause of Part 1 is applicable, except as follows: Additional definitions: 3.101 twist-on connecting device TOCD terminal whi
32、ch is twisted on the ends of two or more conductors 3.102 range of TOCDs connecting capacity the smallest and the largest individual conductors (expressed in mm2text deleted) used in pairs of equal size capable of being safely connected as specified by the manufacturer. This does not exclude the use
33、 of more than two conductors in the TOCD or the use of conductors of sizes outside the specified range of connecting capacity. 5 EN 60998-2-4:2005 3.103 gripping dimension diameter maximum dimension of the TOCD perpendicular to the aperture for the conductors (see Figure 101). 4 General This clause
34、of Part 1 is applicable. 5 General notes on tests This clause of Part 1 is applicable, except as follows: 5.4 Replacement: The necessary number of new samples to be submitted to the tests is divided into sets as detailed in Table 101. The tests are carried out in the sequence listed for each set. Ta
35、ble 101 Number of new samples and sequence applicable to the tests Sets Number of new samples per set Clauses or subclauses Test sequence A 3 8 9 Marking Protection against electric chock B 3 to 48 10 14.102 and 14.103 Connection of conductors Torque and pull-out test C 12 or 24 12 13 Resistance to
36、ageing and to humidity Insulation resistance and electric strength D 6 14.101 Clamping without undue damage to the conductors E 6 14.101.1 Clamping with reduced number of conductors F 3 14.2 Mechanical strength (tumbling barrel) G 6 15.101 Temperature rise H 6 or 12 15.102.1 Temperature cycling test
37、 I 3 15.102.2 Short-time withstand current test K 3 16 18 Resistance to heat Resistance to abnormal heat and fire If insufficient samples are available according to Table 101, sets B and C may be combined but, in this case, the tests of Clause 13 have to be made first. EN 60998-2-4:2005 6 6 Main cha
38、racteristics This clause of Part 1 is applicable except as follows: Addition: 6.101 The preferred additional values of rated insulation voltage are 300 V and 600 V. 7 Classification This clause of Part 1 is not applicable, except for subclause 7.5. Addition: 7.101 Classification according to type an
39、d combinations of conductors TOCD for rigid (solid or stranded) conductors; TOCD for flexible conductors; TOCD for the combination of rigid (solid or stranded) and flexible conductors. 8 Marking This clause of Part 1 is applicable, except as follows: 8.1 Replacement: For a TOCD, the following markin
40、gs apply. The following shall be marked on the TOCD: a) manufacturers or responsible vendors name, trade mark or identification mark; b) type reference, catalogue number or part number; c) range of TOCDs connecting capacity; d) rated insulation voltage. text deleted Example: A TOCD designed for the
41、connection of a minimum of two conductors of 2,5 mm2up to and including two conductors of 6 mm2shall be marked: 2,5-6 mm2. For very small devices, with a surface insufficient for complete marking, only a) and b) need to be marked on the TOCD. In addition, the following shall be marked on the smalles
42、t package unit or on an instruction or information sheet packed within the smallest package unit: a) manufacturers or responsible vendors name, trade mark or identification mark; b) type reference, catalogue number or part number; c) allowable conductor combinations and the range of TOCDs connecting
43、 capacity as stated in mm2text deleted; 7 EN 60998-2-4:2005 d) type(s) of conductor(s) for which the TOCD is designed; e) maximum ambient temperature of use if greater than 40 C (according to 7.5 of Part 1); f) rated insulation voltage; g) insulation strip length; h) connection procedure including p
44、roper usage of tool, if required. 8.2 Not applicable. 8.3 Replacement of the third line: n mm2or n for range of TOCDs connecting capacity. text deleted 9 Protection against electric shock This clause of Part 1 is applicable, except as follows: Replacement of the second paragraph: The TOCD shall be c
45、onnected to two conductors of the smallest cross-section of the range of TOCDs connecting capacity. 10 Connection of conductors This clause of Part 1 is applicable, except as follows: Addition: 10.101 It shall be possible to connect the number and the cross-sections of rigid (solid or stranded) and/
46、or flexible conductors to a TOCD as specified by the manufacturer. 10.102 A TOCD shall allow the correct connection by insertion of a bunched set of conductors followed by twisting of the TOCD. Compliance with 10.101 and 10.102 is checked by inspection, after fitting the TOCD as specified by hand or
47、 as specified by the manufacturer, to the combinations of conductors as required in 14.101. The bunch of conductors to be connected may be formed but not pre-twisted to allow insertion into the TOCD. In case of doubt, compliance is checked by applying the torques required in 14.103. In all cases, ne
48、w conductors and samples shall be used. The test may be combined with the test of 14.101. 10.103 The disconnection of a conductor from a TOCD shall require an operation other than a pull on the conductor. Compliance is checked by the tests of 14.101 and 14.102. EN 60998-2-4:2005 8 11 Construction Th
49、is clause of Part 1 is applicable, except as follows: Subclauses 11.2 to 11.5 inclusive are not applicable. 11.6 Addition: Although metallic parts of a TOCD may not be intended to carry current, for the purpose of this subclause they shall be treated as current-carrying parts. Additional subclauses: 11.101 The shape of the aperture of a TOCD shall be such that, after connection has been completed, the insulation of the conductors
