1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationConduit systems for cable managementPart 24: Particular requirements Conduit systems buried underg oundBS EN 61386-24:2010rIncorporating corrigendum November 2010National forewor
2、dThis British Standard is the UK implementation of EN 61386-24:2010. It isidentical to IEC 61386-24:2004. It supersedes BS EN 50086-2-4:1994 which iswithdrawn.The UK participation in its preparation was entrusted to Technical CommitteePEL/213, Cable management.A list of organizations represented on
3、this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. BSI 2010 ISBN 978 0 580 73596 7 ICS 29.120.10Compliance with a British Standard cannot confer immunity
4、from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 October 2010.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 61386-24:201030 November 2010 Correction of title on front coverEUROP
5、EAN STANDARD EN 61386-24 NORME EUROPENNE EUROPISCHE NORM October 2010 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2010 CENELEC -
6、 All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61386-24:2010 E ICS 29.120.10 Supersedes EN 50086-2-4:1994 + corr. Feb.2001 + A1:2001English version Conduit systems for cable management - Part 24: Particular requirements - Conduit systems
7、buried underground (IEC 61386-24:2004) Systmes de conduits pour la gestion du cblage - Partie 24: Rgles particulires - Systmes de conduits enterrs dans le sol (CEI 61386-24:2004) Installationsrohrsysteme zum Fhren von Leitungen fr elektrische Energie und fr Information - Teil 2-4: Besondere Anforder
8、ungen fr erdverlegte Elektroinstallationsrohrsystem (IEC 61386-24:2004) This European Standard was approved by CENELEC on 2010-10-01. 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 nationa
9、l standard without any alteration. 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 a
10、ny other language made by translation 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, Bulgaria, Croatia, Cyprus,
11、the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 61386-24:2010 - - Foreword The
12、 text of the International Standard IEC 61386-24:2004, prepared by SC 23A, Cable management systems, of IEC TC 23, Electrical accessories, was submitted to the Unique Acceptance Procedure and was approved by CENELEC as EN 61386-24 on 2010-10-01 without any modification. This European Standard supers
13、edes EN 50086-2-4:1994 + corr. Feb.2001 + A1:2001. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent rights. The following dates were fixed: latest
14、 date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2011-10-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2013-10-01 This Part 24, which specifies particular require
15、ments for conduit systems buried underground, is to be used in conjunction with EN 61386-1, Conduit systems for cable management Part 1: General Requirements, and its amendments. It was established on the basis of the first edition (2004) of that standard and its Amendment 1 (2000). This Part 24 sup
16、plements or modifies the corresponding clauses of EN 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“, “modification“ or “replacement“, the relevant text of Part
17、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 national wiring regulations, whilst applying the manufa
18、ctures 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 EN 61386 consists of the following parts, under the general title Conduits systems for cable management: Pa
19、rt 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 systems buried underground Part 25: Particular requirements Co
20、nduit fixing devices 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. Annexes ZA and ZB have been added by CENELEC. BS EN 61386-24:20104- 5 - EN 61386-24:2010 Endorsement noti
21、ce The text of the International Standard IEC 61386-24:2004 was approved by CENELEC as a European Standard without any modification. _ BS EN 61386-24:2010EN 61386-24:2010 - 6 - Annex ZA (normative) Normative references to international publications with their corresponding European publications The
22、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. NOTE When an international publication has been modif
23、ied by common modifications, indicated by (mod), the relevant EN/HD applies. Annex ZA of Part 1 is applicable except as follows: EN 60423, Not applicable EN 60670, Not applicable Addition: Publication Year Title EN/HD Year ISO 161-1 1996 Thermoplastics pipes for the conveyance of fluids - Nominal ou
24、tside 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 EN 22768-1 1993 BS EN 61386-24:2010- 7 - EN 61386-24:2010 Annex ZB (normative) Special national conditi
25、ons Special national condition: National characteristic or practice that cannot be changed even over a long period, e.g. climatic conditions, electrical earthing conditions. NOTE If it affects harmonization, it forms part of the European Standard or Harmonization Document. For the countries in which
26、 the relevant special national conditions apply these provisions are normative, for other countries they are informative. Clause Special national condition General Denmark According to the installation practice in Denmark conduit systems buried underground have to be in the colour “red no 5” accordi
27、ng to DS 735 (1982) or “red” according to IEC 304 (1982). BS EN 61386-24:201061386-24 IEC:2004 8 CONTENTS 1 Scope.9 2 Normative references .9 3 Definitions 9 4 General requirements.9 5 General conditions for tests9 6 Classification9 7 Marking and documentation11 8 Dimensions 13 9 Construction.13 10
28、Mechanical properties 13 11 Electrical properties17 12 Thermal properties .1713 Fire effects .17 14 External influences .1915 Electromagnetic compatibility .19 Annex A (normative) Classification coding for conduit systems 27 Annex B (normative) Determination of material thickness.27 Figure 101 Impac
29、t test apparatus.23 Figure 102 Bending test apparatus 25 Table 101 conduits diameters 19 Table 102 Impact test energy values21 BS EN 61386-24:201061386-24 IEC:2004 9 CONDUIT SYSTEMS FOR CABLE MANAGEMENT Part 24: Particular requirement Conduit systems buried underground 1 Scope Replacement: This stan
30、dard 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-metallic and co
31、mposite 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 fluids Nominal
32、 outside diameters and nominal pressures Part 1: Metric seriesISO 2768-1:1989, General tolerances Part 1: Tolerances for linear and angular dimensions without individual tolerance indications3 Definitions This clause of Part 1 is applicable. 4 General requirements This clause of Part 1 is applicable
33、. 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. BS EN 61386-24:201061386-24 IEC:2004 11 6.1 According to mechanical properties Replacement: 6.1.1 Resistance to
34、compression 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 undergr
35、ound 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 Rigid6.1
36、.3.2 Pliable6.2 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 cod
37、e 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. BS EN 61386-24:201061386-24 IEC:2004 13 7.6 A
38、ddition:Add the following 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 manufacture
39、r shall give instruction 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
40、diameters on the 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 i
41、s applicable except 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 materia
42、ls is not started until 10 days after manufacture. 10.2.2 Samples are (200 5) mm long.BS EN 61386-24:201061386-24 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
43、having minimum dimensions (100 x 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
44、When reaching the deflection of 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
45、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 crack allowing the ingress of light or water between the inside and the outside. 10.3 Impact test Replacement:10.3.1 Twelve samples of conduits each (200 5) mm in length
46、or conduit fittings are subjected to an impact test by means of the apparatus shown in Figure 101. Conduits are tested alone. Fittings are tested when assembled with conduits. NOTE 1 If necessary, for the test purposes conduit fittings may be trimmed as long as the test result is not affected. NOTE
47、2 For determination of mass of hammer, the hammer is to be considered as the head of hammer plus the guidance carriage. 10.3.2 The test apparatus is placed on a firm flat surface. The samples are conditioned in a cold chamber at the temperature of (5 1)C for 2 h. The samples are removed from the col
48、d chamber and placed on the vee-block as shown in Figure 101. The hammer falls once on each sample. The time between removal of the sample from the cold chamber and completion of impact does not exceed 10 s. The energy values are specified in Table 102. The test is made on the weakest part of the co
49、nduit fitting except that it is not applied within 5 mm of any sample entry. Samples of conduit are tested on the centre of their length. BS EN 61386-24:201061386-24 IEC:2004 17 10.3.3 After the test, when the samples have attained (20 5) oC, it shall be possible to pass the appropriate ball specified in 10.4.3 through the conduit, under its own weight and without any initial speed, with the sample in the vertical position. There shall be no sign of disinteg
