SANS 61386-24-2005 Conduit systems for cable management Part 24 Particular requirements - Conduit systems buried underground《电缆管理线管系统 第24部分 特殊要求 地下埋设的线管系统》.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. ICS 29.120.10 ISBN 0-626-16813-9 SANS 61386-24:2005Edition 1IEC 61386-24:2004Edition 1SOUTH AFRICAN NATIONAL STANDARD Conduit systems for cable managemen

4、t Part 24: Particular requirements Conduit systems buried underground This national standard is the identical implementation of IEC 61386-24:2004, and is adopted with the permission of the International Electrotechnical Commission. Published by Standards South Africa 1 dr lategan road groenkloof pri

5、vate bag x191 pretoria 0001 tel: 012 428 7911 fax: 012 344 1568 international code + 27 12 www.stansa.co.za Standards South Africa SANS 61386-24:2005 Edition 1 IEC 61386-24:2004 Edition 1 Table of changes Change No. Date Scope Abstract Specifies requirements and tests for conduit systems buried unde

6、rground including conduits and conduit fittings for the protection and management of insulated conductors and / or cables in electrical installations or in communication systems. This standard applies to metallic, non-metallic and composite systems including threaded and non-threaded entries which t

7、erminate the system. Keywords cables, conduits, electrical installations, electric conduits, protective equipment, underground electric power distribution. National foreword This South African standard was approved by National Committee StanSA SC 67C, Electricity distribution systems and components

8、Electrical accessories, in accordance with procedures of Standards South Africa, in compliance with annex 3 of the WTO/TBT agreement. NORME INTERNATIONALECEIIECINTERNATIONAL STANDARD 61386-24Premire ditionFirst edition2004-07Systmes de conduits pour la gestion du cblage Partie 24: Rgles particulires

9、 Systmes de conduits enterrs dans le sol Conduit systems for cable management Part 24: Particular requirements Conduit systems buried underground Pour prix, voir catalogue en vigueur For price, see current catalogue IEC 2004 Droits de reproduction rservs Copyright - all rights reserved Aucune partie

10、 de cette publication ne peut tre reproduite ni utilise sous quelque forme que ce soit et par aucun procd, lectronique ou mcanique, y compris la photocopie et les microfilms, sans laccord crit de lditeur. No part of this publication may be reproduced or utilized in any form or by any means, electron

11、ic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Electrotechnical Commission, 3, rue de Varemb, PO Box 131, CH-1211 Geneva 20, SwitzerlandTelephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmailiec.ch Web: www.iec.ch

12、CODE PRIX PRICE CODE N Commission Electrotechnique InternationaleInternational Electrotechnical Commission 61386-24 IEC:2004 3 CONTENTS FOREWORD.5 1 Scope.9 2 Normative references .9 3 Definitions 9 4 General requirements.9 5 General conditions for tests9 6 Classification9 7 Marking and documentatio

13、n11 8 Dimensions 13 9 Construction.13 10 Mechanical properties 13 11 Electrical properties17 12 Thermal properties .17 13 Fire effects .17 14 External influences .19 15 Electromagnetic compatibility .19 Annex A (normative) Classification coding for conduit systems 27 Annex B (normative) Determinatio

14、n of material thickness.27 Figure 101 Impact test apparatus.23 Figure 102 Bending test apparatus 25 Table 101 conduits diameters 19 Table 102 Impact test energy values21 61386-24 IEC:2004 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ CONDUIT SYSTEMS FOR CABLE MANAGEMENT Part 24: Particular requireme

15、nts Conduit systems buried underground FOREWORD 1) 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 ques

16、tions 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, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication

17、(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-governmental organizations liaising with the IEC also participate in this preparation. IEC coll

18、aborates 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 technical matters express, as nearly as possible, an international consensus of opinion

19、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 by IEC National Committees in that sense. While all reasonable efforts are made to ensur

20、e 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 uniformity, IEC National Committees undertake to apply IEC Publications transparently to

21、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. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered re

22、sponsible 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 directors, employees, servants or agents including individual experts and members of its tech

23、nical 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 of, or reliance upon, this IEC Publication or any other IEC

24、 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 some of the elements of this IEC Publication may be the subje

25、ct of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 61386-24 has been prepared by subcommittee 23A: Cable management systems, of IEC technical committee 23: Electrical accessories. The text of this standard is based on the

26、following documents: FDIS Report on voting 23A/446/FDIS 23A/459/RVDFull 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 Directives, Part 2. 61386-24 IEC:200

27、4 7 This Part 24, which specifies particular requirements for conduit systems buried underground, is to be used in conjunction with IEC 61386-1, Conduit systems for cable management Part 1: General Requirements1, and its amendments. It was established on the basis of the first edition (1996) of that

28、 standard and its Amendment 1 (2000). This Part 24 supplements or modifies the corresponding clauses of IEC 61386-1. Where a particular clause or subclause of Part 1 is not mentioned in this Part 24, that clause or subclause applies as far as is reasonable. Where this Part 24 states “addition“, “mod

29、ification“ or “replacement“, the relevant text of Part 1 is to be adapted accordingly. Subclauses, tables and figures which are in addition to those in Part 1 are numbered starting with 101. A conduit system which complies with this standard, is deemed safe for use when installed in accordance with

30、national wiring regulations, whilst applying the manufactures installation instructions and conduit classification. NOTE The following print types are used: requirements: in roman type test specifications: in italic type notes: in small roman type IEC 61386 consists of the following parts, under the

31、 general title Conduits systems for cable management: Part 1: General requirements Part 21: Particular requirements Rigid conduit systems Part 22: Particular requirements Pliable conduit systems Part 23: Particular requirements Flexible conduit systems Part 24: Particular requirements Conduit system

32、s buried underground Future standards in this series will carry the new general title as cited above. Titles of existing standards in this series will be updated at the time of the next edition. The committee has decided that the contents of this publication will remain unchanged until the maintenan

33、ce 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; replaced by a revised edition, or amended. _ 1Please note that the generic title of the IEC 61386 series has been

34、changed to Conduit systems for cable management since the publication of Part 1, hence all other parts of the series are now published under this new title. 61386-24 IEC:2004 9 CONDUIT SYSTEMS FOR CABLE MANAGEMENT Part 24: Particular requirement Conduit systems buried underground 1 Scope Replacement

35、: This standard specifies requirements and tests for conduit systems buried underground including conduits and conduit fittings for the protection and management of insulated conductors and/or cables in electrical installations or in communication systems. This standard applies to metallic, non-meta

36、llic and composite systems including threaded and non-threaded entries which terminate the system. 2 Normative references This clause of Part 1 is applicable except as follows: IEC 60423, Not applicable IEC 60670, Not applicable Addition: ISO 161-1:1996, Thermoplastics pipes for the conveyance of fl

37、uids Nominal outside diameters and nominal pressures Part 1: Metric series ISO 2768-1:1989, General tolerances Part 1: Tolerances for linear and angular dimensions without individual tolerance indications 3 Definitions This clause of Part 1 is applicable. 4 General requirements This clause of Part 1

38、 is applicable. 5 General conditions for tests This clause of Part 1 is applicable. 6 Classification This clause of Part 1 is applicable except as follows: Modification: NOTE Annex A is not applicable. 61386-24 IEC:2004 11 6.1 According to mechanical properties Replacement: 6.1.1 Resistance to compr

39、ession 6.1.1.1 Type 250 (code 250) NOTE A conduit system according to 6.1.1.1 is intended to be installed with additional precautions as specified in the relevant national regulations 6.1.1.2 Type 450 (code 450) NOTE A conduit system according to 6.1.1.2 is intended to be directly buried underground

40、 without additional precautions 6.1.1.3 Type 750 (code 750) NOTE A conduit system according to 6.1.1.3 is intended to be directly buried underground without additional precautions 6.1.2 Resistance to impact 6.1.2.1 Light (code L) 6.1.2.2 Normal (code N) 6.1.3 Resistance to bending 6.1.3.1 Rigid 6.1.

41、3.2 Pliable 6.2 According to temperature Not applicable. 7 Marking and documentation This clause of Part 1 is applicable except as follows: 7.1 Addition: Moreover the conduit shall be marked with a) the code “L“ or “N“ according to 6.1.2; b) the code “250“, “450“ or “750“ according to 6.1.1. This co

42、de shall be marked immediately after the code according to a). 7.1.1 Not applicable. Addition: 7.1.101 Conduits shall be marked according to 7.1 at regular intervals along their length of preferably 1 m but not longer than 3 m. 7.3 and 7.4 Not applicable. 61386-24 IEC:2004 13 7.6 Addition: Add the f

43、ollowing note after Note 3: NOTE 4 An alternative test is under consideration Addition: 7.101 The manufacturer shall provide in his literature all information necessary for the proper and safe installation and use. In addition, for conduit systems according to 6.1.1.1 the manufacturer shall give ins

44、truction for installation precautions following the relevant national technical rules, if any. 8 Dimensions Replacement: Conduit dimensions should preferably be according to Table 101. Compliance of the minimum inside diameter is checked by measurement according to two perpendicular diameters on the

45、 same section and calculating the average value. Compliance of the outside diameter is checked using a ring gauge or any suitable method. 9 Construction This clause of Part 1 is applicable except as follows: 9.3 and 9.4 Not applicable. 10 Mechanical properties This clause of Part 1 is applicable exc

46、ept as follows: 10.1.4 Replacement: Compliance is checked by the tests of 10.2 to 10.4 10.2 Compression test Replacement: 10.2.1 Conduits are subjected to a compression test. NOTE Compression test on fittings is under consideration The test for conduits containing non-metallic materials is not start

47、ed until 10 days after manufacture. 10.2.2 Samples are (200 5) mm long. 61386-24 IEC:2004 15 10.2.3 Before the test, the outside and inside diameters of the samples are measured as specified in Clause 8. 10.2.4 The samples are compressed between two flat steel plates having minimum dimensions (100 x

48、 220 x 15) mm, the length 220 mm being along the length of the sample. The samples are compressed at a rate of (15 0,5) mm/min and the load recorded at the vertical deflection equivalent to 5% of the average value of the original inside diameter of the sample. 10.2.5 When reaching the deflection of

49、5 %, the applied force shall be at least: 250 N for conduits according to 6.1.1.1 ; 450 N for conduits according to 6.1.1.2; 750 N for conduits according to 6.1.1.3. NOTE The deflection is calculated with the inner diameter but the measurement of the outside diameter may be sufficient. In case of doubt, it will be necessary to measure the inner diameter. 10.2.6 After the test, there shall be no c