EN 60702-3-2016 en Mineral insulated cables and their terminations with a rated voltage not exceeding 750 V - Part 3 Guidance for use.pdf

1、Mineral insulated cables and their terminations with a rated voltage not exceeding 750 VPart 3: Guidance for useBS EN 60702-3:2016BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06National forewordThis British Standard is the UK implementation of EN 60702-3:2016. It is

2、 identical to IEC 60702-3:2016. It supersedes BS 6207-3:2001 which will be withdrawn on 18 May 2019.The UK participation in its preparation was entrusted by TechnicalCommittee GEL/20, Electric cables, to Subcommittee GEL/20/17, ElectricCables - Low voltage.A list of organizations represented on this

3、 committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 82328 2ICS 29.

4、060.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 June 2016.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 60702-3:20

5、16EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60702-3 June 2016 ICS 29.060.20 English Version Mineral insulated cables and their terminations with a rated voltage not exceeding 750 V - Part 3: Guidance for use (IEC 60702-3:2016) Cbles isolant minral et leurs terminaisons de tension assigne

6、ne dpassant pas 750 V - Partie 3: Guide dutilisation (IEC 60702-3:2016) Mineralisolierte Leitungen mit einer Bemessungsspannung bis 750 V - Teil 3: Anwendungsrichtlinie (IEC 60702-3:2016) This European Standard was approved by CENELEC on 2016-05-18. CENELEC members are bound to comply with the CEN/C

7、ENELEC 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 CEN-CENELEC Management Centr

8、e 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 CEN-CENELEC Management Centre has the same status

9、 as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

10、Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normu

11、ng CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 60702-3:2016 E BS EN 60702-3:2016EN 60702-3:2016 2 European foreword The text of document 20/1618/FDIS, future

12、edition 1 of IEC 60702-3, prepared by IEC/TC 20 “Electric cables“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60702-3:2016. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical nationa

13、l standard or by endorsement (dop) 2017-02-18 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2019-05-18 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall

14、 not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 60702-3:2016 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following note has to be added fo

15、r the standard indicated: IEC 60702-1 NOTE Harmonized as EN 60702-1. IEC 60702-2 NOTE Harmonized as EN 60702-2. IEC 60364-5-52 NOTE Harmonized as HD 60364-5-52. BS EN 60702-3:2016EN 60702-3:2016 3 Annex ZA (normative) Normative references to international publications with their corresponding Europe

16、an publications The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments)

17、applies. NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here: www.cenelec.eu. Publication Year Title E

18、N/HD Year IEC 60364-1 - Low-voltage electrical installations - Part 1: Fundamental principles, assessment of general characteristics, definitions HD 60364-1 - BS EN 60702-3:2016 2 IEC 60702-3:2016 IEC 2016 CONTENTS FOREWORD . 3 1 Scope 5 2 Normative references. 5 3 Terms and definitions 5 4 Safety .

19、 5 4.1 Fundamental considerations 5 4.2 General . 5 4.3 Support and fixing . 7 5 Limiting conditions . 7 5.1 General . 7 5.2 Voltage . 7 5.3 Current carrying capacity . 7 5.4 Thermal effects . 8 5.5 Mechanical stress . 9 5.5.1 General . 9 5.5.2 Tension . 9 5.5.3 Bending . 9 5.5.4 Compression 9 5.6 C

20、ompatibility . 9 5.7 Dynamic stresses 10 5.8 Flexing 10 5.9 Corrosion protection and direct burial 10 6 Installation . 10 7 Initial and periodic verification 10 8 Packaging, storage and handling/transportation . 11 8.1 Packaging . 11 8.2 Storage/transportation . 11 8.3 Handling . 11 Bibliography . 1

21、2 Table 1 Limiting temperature conditions . 6 Table 2 Recommended fixing distances 7 BS EN 60702-3:2016IEC 60702-3:2016 IEC 2016 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ MINERAL INSULATED CABLES AND THEIR TERMINATIONS WITH A RATED VOLTAGE NOT EXCEEDING 750 V Part 3: Guidance for use FOREWORD 1)

22、 The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical

23、 and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical

24、 committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organizati

25、on for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical comm

26、ittee has representation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications i

27、s accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and

28、regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and

29、, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or

30、agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use

31、of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that so

32、me of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60702-3 has been prepared by IEC technical committee 20: Electric cables. This first edition of IEC 60702-3 is b

33、ased on CENELEC HD 586.3. The text of this standard is based on the following documents: FDIS Report on voting 20/1618/FDIS 20/1623/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafte

34、d in accordance with the ISO/IEC Directives, Part 2. BS EN 60702-3:2016 4 IEC 60702-3:2016 IEC 2016 A list of all parts in the IEC 60702 series, published under the general title Mineral insulated cables and their terminations with a rated voltage not exceeding 750 V, can be found on the IEC website

35、. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC website under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a rev

36、ised edition, or amended. BS EN 60702-3:2016IEC 60702-3:2016 IEC 2016 5 MINERAL INSULATED CABLES AND THEIR TERMINATIONS WITH A RATED VOLTAGE NOT EXCEEDING 750 V Part 3: Guidance for use 1 Scope This part of IEC 60702 provides guidance for the safe use of mineral insulated cables and their terminatio

37、ns with a rated voltage not exceeding 750 V which are specified in IEC 60702-1 and IEC 60702-2. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited app

38、lies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60364-1, Low-voltage electrical installations Part 1: Fundamental principles, assessment of general characteristics, definitions 3 Terms and definitions For the purposes of this docume

39、nt, the terms and definitions given in IEC 60364-1 apply. 4 Safety 4.1 Fundamental considerations 4.1.1 Safety of a cable means that the product does not present an unacceptable risk of danger to life or property whilst being used in its intended manner. 4.1.2 Unless otherwise stated, cables shall n

40、ot be used for any other purpose than the transmission and distribution of electricity. 4.1.3 The test methods, test parameters and requirements described in IEC 60702-1 and IEC 60702-2 are only provided for the purpose of checking design with respect to safety and quality assurance. They shall not

41、be regarded as providing guidance as to whether the cables are suitable for service under conditions equivalent to the test conditions. 4.2 General 4.2.1 All conductors and cables shall be selected so as to be suitable for the voltages and currents likely to occur under all conditions which are or s

42、hall have been anticipated in the equipment or installation in which they are used. 4.2.2 Cables shall be constructed, installed, protected, used and maintained so as to prevent danger so far as it is reasonably practical. 4.2.3 The limiting temperature conditions under which mineral insulated cable

43、s and terminations can reasonably be expected to operate safely under normal circumstances are given in Table 1. BS EN 60702-3:2016 6 IEC 60702-3:2016 IEC 2016 These conditions are those which are considered capable of ensuring a reasonable length of life in service. It has been accepted as reasonab

44、le by experience and use of the cable and terminations in the particular installations. Table 1 Limiting temperature conditions Temperature condition Limit value Maximum continuous sheath operating temperature, exposed to touch or in contact with combustible material: bare copper sheath 70 C covered

45、 copper sheath 70 C Maximum continuous sheath operating temperature, not exposed to touch, and not in contact with combustible material: bare copper sheath and 105 C seals 105 C bare copper sheath and 250 C seals 250 C Maximum conductor temperature under fault conditions, exposed to touch or in cont

46、act with combustible material: bare or covered sheath 160 C aMaximum conductor temperature under fault conditions, not exposed to touch, and not in contact with combustible material bare copper sheath 250 C aMinimum installation temperature: bare copper sheath bcovered copper sheath cMinimum continu

47、ous operating temperature bare copper sheath bcovered copper sheath caSeals shall be suitable for this temperature rating up to 5 s. b For all practical circumstances, unlimited with respect to cable performance. cSeek advice from the manufacturer for the particular covering material.4.2.4 Cables sh

48、all be selected so that they are suitable for the operating conditions and equipment classification. Examples of operating conditions are: a) voltage; b) overcurrent; c) protective measures; d) grouping of cables; e) method of installation; f) accessibility. 4.2.5 Cables shall be selected so that th

49、ey are suitable for any external influences which may exist. Examples of external influences are: a) ambient temperature; b) presence of rain, steam or accumulation of water; c) presence of corrosive, flammable, chemical or polluting substances; BS EN 60702-3:2016IEC 60702-3:2016 IEC 2016 7 d) mechanical stresses (such as through holes or sharp edges in metal work); e) fauna (such as rodents); f) flora (such as mould); g) radiation (such as sunlight). NOTE In respect of item g) it is