BS EN 50262-1999 电气设备用米制电缆密封装置--标准分享网.pdf

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1、BRITISH STANDARD BS EN 50262:1999 Incorporating Amendments Nos. 1 and 2 Cable glands for electrical installations The European Standard EN 50262:1998, with the incorporation of amendment A1:2001 and amendment A2:2004, has the status of a British Standard ICS 21.040; 29.080.20 Licensed Copy: sheffiel

2、dun sheffieldun, na, Mon Nov 06 06:35:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSIBS EN 50262:1999 This 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 Octob

3、er 1999 BSI 21 February 2005 ISBN 0 580 32807 4 National foreword This British Standard is the official English language version of EN 50262:1998, including amendments A1:2001 and A2:2004. It supersedes BS 6121-2:1989 and BS 6121-3:1990 which are withdrawn. Also, together with BS 6121-1:2005 it supe

4、rsedes BS 6121-1:1989, which is withdrawn. The start and finish of text introduced or altered by amendment is indicated in the text by tags !“. Tags indicating changes to CENELEC text carry the number of the CENELEC amendment. For example, text altered by CENELEC amendment A1 is indicated by !“. The

5、 UK participation in its preparation was entrusted by Technical Committee GEL/20, Electric cables, to Subcommittee GEL/20/11/1 (formerly GEL/20/8), Cable glands, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cro

6、ss-references The 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 Electronic Catalogue or of

7、 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. aid enquirers to understand the text; p

8、resent to the responsible European committee any enquiries on the 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 fron

9、t cover, the EN title page, pages 2 to 23 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. Date Comments 13524 15 April 2002 See National foreword 15520 21 February 2005 See National forewo

10、rd. Also, addition of National Annex NA Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 06:35:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSIEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 50262 September 1998 + A1 August 2001 + A2 December 2004 ICS 21.140; 29.080.20 Descriptors: Electrica

11、l accessory, low voltage accessory, electrical installation, cable glands, requirement, definition, test, type test, classification, marking, technical document, construction characteristics, mechanical property, electrical property, electromagnetic compatibility English version Cable glands for ele

12、ctrical installations (includes amendments A1:2001 and A2:2004) Presse-toupe pour installations lectriques (inclut les amendements A1:2001 et A2:2004) Kabelverschraubungen fr elektrische Installationen (enthlt nderungen A1:2001 und A2:2004) This European Standard was approved by CENELEC on 1998-04-0

13、1. Amendment A1 was approved by CENELEC on 2001-03-01; amendment A2 was approved by CENELEC on 2004-10-01. 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 any alte

14、ration. 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 made by t

15、ranslation 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, Czech Republic, Denmark, Finland, France, Germany, Gre

16、ece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat

17、: 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 50262:1998 + A1:2001 + A2:2004 E Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 06:35:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSIEN

18、 50262:1998 BSI 21 February 2005 2 Foreword This European Standard was prepared by the working group WG11, Gland panels, of the Technical Committee CENELEC TC 20, Electric cables. The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50262 on 1998-04-01. The follow

19、ing dates were fixed: Foreword to amendment A1 This amendment to the European Standard EN 50262 was prepared by the Technical Committee CENELEC TC 20, Electric cables. It includes requirements for testing multi-orifice seals and basic corrosion resistance tests for metric cable glands. The text of t

20、he draft amendment was submitted to the formal vote and was approved by CENELEC as amendment A1 to EN 50262:1998 on 2001-03-01. The following dates were fixed: Foreword to amendment A2 This amendment to the European Standard EN 50262:1998 was prepared by the Gland Panel of WG 11 of Technical Committ

21、ee CENELEC TC 20, Electric cables. The text of the draft was submitted to the formal vote and was approved by CENELEC as amendment A2 to EN 50262:1993 on 2004-10-01. The following dates were fixed: Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Definitions 4 4 General requirements 5 5

22、 General conditions for tests 5 6 Classification 6 7 Marking and documentation 7 8 Construction 7 9 Mechanical properties 8 10 Electrical properties 15 11 Electromagnetic compatibility 20 12 External influences 20 latest date by which the EN has to be implemented at national level by publication of

23、an identical national standard or by endorsement (dop) 1999-03-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2001-03-01 latest date by which the amendment has to be implemented at national level by publication of an identical national standard or b

24、y endorsement (dop) 2002-04-01 latest date by which the national standards conflicting with the amendment have to be withdrawn (dow) 2003-04-01 latest date by which the amendment has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2005-10-

25、01 latest date by which the national standards conflicting with the amendment have to be withdrawn (dow) 2007-10-01 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 06:35:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSIEN 50262:1998 BSI 21 February 2005 3 1 Scope This European Standard provides r

26、equirements and tests for the construction and performance of #cable glands$. This standard covers complete glands as supplied by the manufacturer or supplier, but not parts of cable glands. !“ This standard does not cover cable glands: for fibre optic cables; for mineral insulated cables specified

27、in HD 586; with a gland entry portion other than metric. NOTE Certain cable glands may also be used in “Hazardous Areas”. Regard should then be taken of other or additional requirements necessary for the !enclosure“ to be installed in such conditions, for example, as specified in EN 50014. 2 Normati

28、ve references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications as listed hereafter. For dated references, subsequent amendments to, or revisions of, a

29、ny of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. All references to the standards listed in this clause are considered dated. EN 50014:1992, + corr. October

30、 1993, Electrical apparatus for potentially explosive atmospheres General requirements. !EN 60068-2-52:1996, Environmental testing Part 2: Tests: Test Kb: Salt mist, cyclic (sodium chloride solution). (IEC 60068-2-52:1996)“ EN 60335 series, Safety of household and similar electrical appliances. (IEC

31、 60335 series, modified) EN 60423:1994, Conduits for electrical purposes Outside diameters of conduits for electrical installations and threads for conduits and fittings. (IEC 60423:1993, modified) EN 60529:1991 + corr. May 1993, Degrees of protection provided by enclosures (IP Code). (IEC 60529:198

32、9) EN 60695-2-1/1:1996, Fire hazard testing Part 2: Test methods Section 1/sheet 1: Glow-wire end-product test and guidance. (IEC 60695-2-1/1:1994 + corr. May 1995) EN 61058 series, Switches for appliances. (IEC 61058 series) #EN ISO 4287:1998, Geometrical product specifications (GPS) Surface textur

33、e: Profile method Terms, definitions and surface texture parameters. (ISO 4287:1997)$ !EN ISO 6988:1994, Metallic and other non-organic coatings Sulphur dioxide test with general condensation of moisture. (ISO 6988:1985)“ HD 586 series, Mineral insulated cables with a rated voltage not exceeding 750

34、 V. ISO 868:1985, Plastics and ebonite Determination of indentation hardness by means of a durometer (Shore hardness). #ISO 985 series, ISO general purpose metric screw threads Tolerances.$ Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 06:35:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSIEN 5

35、0262:1998 4 BSI 21 February 2005 3 Definitions For the purposes of this standard, the following definitions apply. 3.1 cable gland !a device designed to permit the entry of a cable, flexible cable or insulated conductor into an enclosure, and which provides sealing and retention. It may also provide

36、 other functions such as earthing, bonding, insulation, cable guarding, strain relief or a combination of these“ 3.2 size the nominal diameter of the thread or nominal outside diameter of the gland entry portion which is attached to the !enclosure“ !“ 3.3 cable an assembly consisting of: one or more

37、 cores and their individual covering(s), (if any); the assembly protection (if any); the protective covering (if any). 3.4 flexible cable a cable which is required to be capable of being flexed while in service 3.5 armoured cable cable with a covering consisting of a metal tape(s) or wires, generall

38、y used to protect the cable from external mechanical effects 3.6 !cable retention the ability of a cable gland to limit the displacement of a fitted cable under static load“ 3.7 !cable anchorage the ability of a cable gland to limit the displacement of a fitted cable under dynamic and torque loads“

39、3.8 cable guard a device which is part of a cable gland and provides additional protection when a flexible cable is subjected to excessive bending 3.9 composite cable gland a cable gland comprising of both metallic and non-metallic materials NOTE Sealing systems are excluded from this definition. 3.

40、10 family (of cable glands) cable glands of the same classification and design conception but which differ dimensionally Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 06 06:35:54 GMT+00:00 2006, Uncontrolled Copy, (c) BSIEN 50262:1998 BSI 21 February 2005 5 4 General requirements !Cable glands

41、 shall be designed to ensure the protection of the inserted cables, flexible cables or insulated conductors in normal use.“ Where component parts are used for cable gland assemblies which are integral with the !enclosure“, the resulting assembly shall meet the requirements of this standard. 5 Genera

42、l conditions for tests 5.1 Tests according to this standard are type tests. 5.2 Unless otherwise specified, the tests shall be carried out on cable glands assembled and mounted in accordance with the manufacturers or suppliers instructions, which shall be equal to the values required in accordance w

43、ith 7.3. There shall be no adjustment between or during the tests. !NOTE Re-mounting of the sample between tests is not considered to be an adjustment.“ 5.3 Unless otherwise specified, the tests shall be carried out at an ambient temperature of (20 5) C. 5.4 Before the tests, in accordance with Clau

44、se 9, Clause 10 and subclause 12.1, non-metallic cable glands and composite cable glands as well as the sealing systems of metallic cable glands shall be placed in an oven, in which the temperature is maintained at (70 2) C for 168 h. If the temperature declared by the manufacturer or supplier is hi

45、gher than the values specified in 8.6, the conditioning shall be carried out at this maximum temperature plus 5 C. Then they shall be kept for at least 24 h at ambient temperature. 5.5 Cable glands shall be conditioned for at least 24 h at a temperature of (20 5) C and a relative humidity between 40

46、 % and 60 %. 5.6 Unless otherwise specified, three samples shall be subjected to the relevant tests. In the case of a family of cable glands, three samples of the largest and smallest and one sample of all other sizes of the same family shall be subjected to the relevant tests. In the case of a cabl

47、e gland utilizing alternative sealing arrangements, each sealing arrangement as specified by the manufacturer or supplier shall be considered as a sample. If a sample does not satisfy a test due to an assembly or manufacturing fault, that test and any preceding one which may have influenced the resu

48、lts of the test, shall be repeated and also the tests which follow shall be made in the required sequence on a full set of three samples of that size, all of which shall comply with the requirements. 5.7 #Unless otherwise specified, test mandrels shall consist of a metallic rod with an elastomeric sleeving having a hardness of 65 Shore D 15 points in accordance with ISO 868, a surface roughness less than or equal to 7 4m R ain accordance with EN ISO 4287 and a sleeve thickness as specified in Table 2A or Table 3 respectively. The complete test mandrel shall have a tolerance of 0,2 mm