SANS 60331-1-2009 Tests for electric cables under fire conditions - Circuit integrity Part 1 Test method for fire with shock at a temperature of at least 830 C for cables of rated th.pdf

1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA

2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any

3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-23204-7 SANS 60331-1:2009Edition 1IEC 60331-1:2009Edition 1SOUTH AFRICAN NATIONAL STANDARD Tests for electric cables under fire conditions

4、 Circuit integrity Part 1: Test method for fire with shock at a temperature of at least 830 C for cables of rated voltage up to and including 0,6/1,0 kV and with an overall diameter exceeding 20 mm This national standard is the identical implementation of IEC 60331-1:2009 and is adopted with the per

5、mission of the International Electrotechnical Commission. Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS SANS 60331-1:2009 Edition 1 IEC 60331-1:2009 Edition 1 Table of changes Change No. D

6、ate Scope National foreword This South African standard was approved by National Committee SABS TC 66, Electric cables, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in September 2009. IEC 60331-1Ed

7、ition 1.0 2009-05INTERNATIONAL STANDARD NORME INTERNATIONALETests for electric cables under fire conditions Circuit integrity Part 1: Test method for fire with shock at a temperature of at least 830 C for cables of rated voltage up to and including 0,6/1,0 kV and with an overall diameter exceeding 2

8、0 mm Essais pour cbles lectriques soumis au feu Intgrit des circuits Partie 1: Mthode dessai au feu avec chocs pour les cbles de tension assigne au plus gale 0,6/1,0 kV et de diamtre externe suprieur 20 mm, une temprature dau moins 830 C INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTE

9、CHNIQUE INTERNATIONALE TICS 29.060.20; 29.020; 13.220.40 PRICE CODECODE PRIXISBN 2-8318-1042-6GROUP SAFETY PUBLICATION PUBLICATION GROUPE DE SCURIT Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale SANS 60331-1:2009Thi

10、s s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 2 60331-1 IEC:2009 CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope.7 2 Normative references7 3 Terms and definitions .8 4 Test conditions Test environment.8 5 Test apparatus .8 5.1 Test equipment8 5.2

11、Test ladder and mounting 12 5.3 Source of heat.12 5.3.1 Burner .12 5.3.2 Flow meters and flow rates 13 5.3.3 Verification 14 5.4 Shock producing device.14 5.5 Positioning of source of heat15 5.6 Continuity checking arrangements .15 5.7 Fuses 15 6 Test specimen 15 6.1 Test specimen preparation.15 6.2

12、 Test specimen mounting16 7 Test procedure .17 7.1 Test equipment and arrangement.17 7.2 Electrical connections17 7.3 Flame and shock application19 7.4 Electrification.19 8 Performance requirement .20 8.1 Flame application time.20 8.2 Acceptance criteria 20 9 Retest procedure 20 10 Test report20 11

13、Cable marking 20 Annex A (normative) Verification procedure for the source of heat 21 Annex B (informative) Guidance on the choice of recommended test apparatus 23 Bibliography24 Figure 1 Schematic diagram of test configuration9 Figure 2 Plan view of fire test equipment 10 Figure 3 End elevation of

14、fire test equipment (not to scale) .11 Figure 4 Typical rubber bush for supporting the test ladder .12 Figure 5 Burner face 13 Figure 6 Schematic diagram of an example of a burner control system using rotameters 14 Figure 7 Example of method of mounting a larger diameter test specimen for test.16 SA

15、NS 60331-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .60331-1 IEC:2009 3 Figure 8 Detailed section of adjustable position of vertical ladder elements for mounting a smaller diameter test specimen for test .17 Figure 9 Basic circuit d

16、iagram 19 Figure A.1 Temperature measuring arrangement 21 SANS 60331-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 4 60331-1 IEC:2009 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ TESTS FOR ELECTRIC CABLES UNDER FIRE CONDITIONS CIRCUIT

17、 INTEGRITY Part 1: Test method for fire with shock at a temperature of at least 830 C for cables of rated voltage up to and including 0,6/1,0 kV and with an overall diameter exceeding 20 mm FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardizatio

18、n 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 and electronic fields. To this end and in addition to other activities, IEC publishes Internationa

19、l Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in thi

20、s preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two

21、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 committee has representation from all interested IEC National Committees. 3) IEC Publications have the

22、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 is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpr

23、etation 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 regional publications. Any divergence between any IEC Publication and the corresponding national or

24、 regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of thi

25、s publication. 7) No liability shall attach to IEC or its directors, employees, servants or 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 ind

26、irect, or for costs (including legal fees) and expenses arising out of the publication, use 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 t

27、he correct application of this publication. 9) Attention is drawn to the possibility that some 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 60331-1 has been pre

28、pared by IEC technical committee 20: Electric cables. This first edition of IEC 60331-1 cancels and replaces IEC 60331-12 (2002) and IEC 60331-31 (2002) to form one single standard. The text of this standard is based on the following documents: FDIS Report on voting 20/1049/FDIS 20/1053/RVD Full inf

29、ormation on the voting for the approval of this standard can be found in the report on voting indicated in the above table. SANS 60331-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .60331-1 IEC:2009 5 This publication has been drafted

30、in accordance with the ISO/IEC Directives, Part 2. It has the status of a group safety publication in accordance with IEC Guide 104. A list of all the parts in the IEC 60331 series, under the general title Tests for electric cables under fire conditions circuit integrity, can be found on the IEC web

31、site. The committee has decided that the contents of this publication will remain unchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, rep

32、laced by a revised edition, or amended. SANS 60331-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 6 60331-1 IEC:2009 INTRODUCTION IEC 60331 consists of the following parts under the general title: Tests for electric cables under fire

33、conditions Circuit integrity: Part 1: Test method for fire with shock at a temperature of at least 830 C for cables of rated voltage up to and including 0,6/1,0 kV and with an overall diameter exceeding 20 mm Part 2: Test method for fire with shock at a temperature of at least 830 C for cables of ra

34、ted voltage up to and including 0,6/1,0 kV and with an overall diameter not exceeding 20 mm Part 3: Test method for fire with shock at a temperature of at least 830 C for cables of rated voltage up to and including 0,6/1,0 kV tested in a metal enclosure Part 11: Apparatus Fire alone at a flame tempe

35、rature of at least 750 C Part 21: Procedures and requirements Cables of rated voltage up to and including 0,6/1,0 kV Part 23: Procedures and requirements Electric data cables Part 25: Procedures and requirements Optical fibre cables NOTE Parts 21, 23 and 25 relate to fire-only conditions at a flame

36、temperature of at least 750 C. Since its first edition (1970), IEC 60331 has been extended and has introduced a range of test apparatus in order that a test may be carried out on large and small power, control, data and optical fibre cables. Successful tests carried out in accordance with this stand

37、ard will enable an identification to be marked on the product. SANS 60331-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .60331-1 IEC:2009 7 TESTS FOR ELECTRIC CABLES UNDER FIRE CONDITIONS CIRCUIT INTEGRITY Part 1: Test method for fire

38、with shock at a temperature of at least 830 C for cables of rated voltage up to and including 0,6/1,0 kV and with an overall diameter exceeding 20 mm 1 Scope This part of IEC 60331 specifies the test apparatus and procedure and gives the performance requirements, including recommended flame applicat

39、ion times, for low voltage power cables of rated voltage up to and including 0,6/1,0 kV and control cables with a rated voltage which are required to maintain circuit integrity when subject to fire and mechanical shock under specified conditions. It is intended for use when testing cables of greater

40、 than 20 mm overall diameter. NOTE 1 Cables of smaller diameter should be tested using the apparatus, procedure and requirements of IEC 60331-2. This standard describes the means of test specimen preparation, the continuity checking arrangements, the electrical testing procedure, the method of burni

41、ng the cables and the method of shock production, and gives requirements for evaluating test results. NOTE 2 Although the scope is restricted to cables with rated voltage up to and including 0,6/1,0 kV, the procedure may be used, with the agreement of the manufacturer and the purchaser, for cables w

42、ith rated voltage up to and including 3,3 kV, provided that suitable fuses are used. Annex A provides the method of verification of the burner and control system used for the test. Requirements are stated for an identification that may optionally be marked on the cable to signify compliance with thi

43、s standard. 2 Normative references 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 60584-1, T

44、hermocouples Part 1: Reference tables IEC 60269-3, Low-voltage fuses Part 3: Supplementary requirements for fuses for use by unskilled persons (fuses mainly for household and similar applications) Examples of standardized systems of fuses A to F IEC Guide 104, The preparation of safety publications

45、and the use of basic safety publications and group safety publications SANS 60331-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 8 60331-1 IEC:2009 3 Terms and definitions For the purposes of this document, the following terms and def

46、initions apply. 3.1 circuit integrity ability of an electric cable to continue to operate in a designated manner whilst subjected to a specified flame source for a specified period of time under specified conditions. 4 Test conditions Test environment The test shall be carried out in a suitable cham

47、ber, of minimum volume 10 m3, with facilities for disposing of any noxious gases resulting from burning. Sufficient ventilation shall be available to sustain the flame for the duration of the test. NOTE 1 Guidance on the choice of suitable chambers is given in Annex B. The chamber and test apparatus

48、 shall be at a temperature of between 10 C and 40 C at the start of each test. The same ventilation and shielding conditions shall be used in the chamber during both the verification and cable test procedures. NOTE 2 The test given in this standard may involve the use of dangerous voltages and tempe

49、ratures. Suitable precautions should be taken against the risk of shock, burning, fire and explosion that may be involved, and against any noxious fumes that may be produced. 5 Test apparatus 5.1 Test equipment The test equipment shall consist of the following: a) a test ladder, on to which the test specimen is mounted, comprising a steel framework fastened to a rigid support as described in 5.2; b) a source of heat comprising a horizon