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 978-0-626-23205-4 SANS 60331-2:2009Edition 1IEC 60331-2:2009Edition 1SOUTH AFRICAN NATIONAL STANDARD Tests for electric cables under fire conditions
4、 Circuit integrity Part 2: 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 not exceeding 20 mm This national standard is the identical implementation of IEC 60331-2:2009 and is adopted with the
5、 permission 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 60331-2:2009 Edition 1 IEC 60331-2:2009 Edition 1 Table of changes Change N
6、o. Date 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 xxxxx 2009. IEC 60331-2Ed
7、ition 1.0 2009-05INTERNATIONAL STANDARD NORME INTERNATIONALETests for electric cables under fire conditions Circuit integrity Part 2: 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 not exceedi
8、ng 20 mm Essais pour cbles lectriques soumis au feu Intgrit des circuits Partie 2: Mthode dessai au feu avec chocs pour les cbles de tension assigne au plus gale 0,6/1,0 kV et de diamtre externe infrieur ou gal 20 mm, une temprature dau moins 830 C INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSIO
9、N ELECTROTECHNIQUE INTERNATIONALE TICS 29.060.20; 29.020; 13.220.40 PRICE CODECODE PRIXISBN 2-8318-1042-7GROUP SAFETY PUBLICATION PUBLICATION GROUPE DE SCURIT Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale SANS 6033
10、1-2:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 2 60331-2 IEC:2009 CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope.7 2 Normative references7 3 Terms and definitions .7 4 Test conditions Test environment.8 5 Test apparatus .8 5.1 Test equi
11、pment8 5.2 Test wall and mounting 11 5.3 Source of heat.13 5.3.1 Burner .13 5.3.2 Flow meters and flow rates 14 5.3.3 Verification 15 5.4 Shock producing device.15 5.5 Positioning of source of heat16 5.6 Continuity checking arrangements .16 5.7 Fuses 16 6 Test specimen 16 6.1 Test specimen preparati
12、on.16 6.2 Test specimen mounting17 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 requirements20 8.1 Flame application time.20 8.2 Acceptance criteria 20 9 Retest procedure 20 10 Test repo
13、rt20 11 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 eleva
14、tion of fire test equipment (not to scale) .11 Figure 4 Typical rubber bush (hardness: 50-60 shore A) for fastening wall 13 Figure 5 Burner face 14 Figure 6 Schematic diagram of an example of a burner control system using rotameters 15 Figure 7 Example of method of mounting a sample for test .17 SAN
15、S 60331-2:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .60331-2 IEC:2009 3 Figure 8 Basic circuit diagram Electric power and control cables with rated voltage up to 600/1 000 V19 Figure A.1 Temperature measuring arrangement 21 SANS 6033
16、1-2:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 4 60331-2 IEC:2009 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ TESTS FOR ELECTRIC CABLES UNDER FIRE CONDITIONS CIRCUIT INTEGRITY Part 2: Test method for fire with shock at a temperature
17、 of at least 830 C for cables of rated voltage up to and including 0,6/1,0 kV and with an overall diameter not exceeding 20 mm FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC Nati
18、onal 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 International Standards, Technical Specifications, Technical Reports, Publi
19、cly 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 this preparatory work. International, governmental and non-governm
20、ental 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 organizations. 2) The formal decisions or agreements of IEC on
21、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 form of recommendations for international use and are accepted
22、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 misinterpretation by any end user. 4) In order to promote international u
23、niformity, 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 regional publication shall be clearly indicated in the latter.
24、 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 this publication. 7) No liability shall attach to IEC or its direc
25、tors, 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 indirect, or for costs (including legal fees) and expenses arising
26、 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 the correct application of this publication. 9) Attention is dra
27、wn 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 60331-2 has been prepared by IEC technical committee 20: Electric cables. The text
28、of this standard is based on the following documents: FDIS Report on voting 20/1050/FDIS 20/1054/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 drafted in accordance with the ISO/IEC Di
29、rectives, Part 2. SANS 60331-2:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .60331-2 IEC:2009 5 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
30、 general title Tests for electric cables under fire conditions circuit integrity, can be found on the IEC website. 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 th
31、e data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. SANS 60331-2:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS . 6 60331-2 IEC:2009 INTRODUC
32、TION IEC 60331 consists of the following parts under the general title: 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 voltage up to and including 0,6/1,0 kV and with an overall diamete
33、r exceeding 20 mm Part 2: 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 not exceeding 20 mm Part 3: Test method for fire with shock at a temperature of at least 830 C for cables of rated volt
34、age up to and including 0,6/1,0 kV tested in a metal enclosure Part 11: Apparatus Fire alone at a flame temperature 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: Procedu
35、res and requirements Optical fibre cables NOTE Parts 21, 23 and 25 relate to fire-only conditions at a flame 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 sm
36、all power, control, data and optical fibre cables. Successful tests carried out in accordance with this standard will enable an identification to be marked on the product. SANS 60331-2:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .60331
37、-2 IEC:2009 7 TESTS FOR ELECTRIC CABLES UNDER FIRE CONDITIONS CIRCUIT INTEGRITY Part 2: 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 not exceeding 20 mm 1 Scope This part of IEC 60331 specif
38、ies the test apparatus and procedure and gives the performance requirements, including recommended flame application 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 subje
39、ct to fire and mechanical shock under specified conditions. It is intended for use when testing cables not greater than 20 mm overall diameter. NOTE Cables of larger diameter should be tested using the apparatus, procedure and requirements of IEC 603311. This standard describes the means of test spe
40、cimen preparation, the continuity checking arrangements, the electrical testing procedure, the method of burning the cables and the method of shock production, and gives requirements for evaluating test results Annex A provides the method of verification of the burner and control system used for the
41、 test. Requirements are stated for an identification that may optionally be marked on the cable to signify compliance with this standard. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited app
42、lies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60584-1, Thermocouples 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
43、 similar applications) Examples of standardized systems of fuses A to F IEC Guide 104, The preparation of safety publications and the use of basic safety publications and group safety publications 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3
44、.1 circuit integrity ability of an electric cable to continue to operate in the designated manner whilst subjected to a specified flame source for a specified period of time under specified conditions. SANS 60331-2:2009This s tandard may only be used and printed by approved subscription and freemail
45、ing clients of the SABS . 8 60331-2 IEC:2009 4 Test conditions Test environment The test shall be carried out in a suitable chamber, 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
46、the duration of the test. NOTE 1 Guidance on the choice of suitable chambers is given in Annex B. The chamber and test apparatus 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 ve
47、rification and cable test procedures. NOTE 2 The test given in this standard may involve the use of dangerous voltages and temperatures. 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 produce
48、d. 5 Test apparatus 5.1 Test equipment The test equipment shall consist of the following: a) a test wall on to which the cable is mounted, comprising a board manufactured from heat-resistant, non-combustible material with steel supports fastened to a rigid support as described in 5.2; b) a source of
49、 heat comprising a horizontally mounted ribbon burner as described in 5.3; c) a shock-producing device as described in 5.4; d) a test wall equipped with thermocouples for verification of the source of heat as described in Annex A. e) a continuity checking arrangement as described in 5.6; f) fuses as described in 5.7 A general arrangement of the test equipment is shown in Figures 1, 2 and 3. SANS 60331-2:2009This s tandard may only be
