BS EN 60332-1-2-2004 Tests on electric and optical fibre cables under fire conditions - Test for vertical flame propagation for a single insulated wire or cable - Procedure for 1 k.pdf

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1、BRITISH STANDARD BS EN 60332-1-2:2004 Tests on electric and optical fibre cables under fire conditions Part 1-2: Test for vertical flame propagation for a single insulated wire or cable Procedure for 1 kW pre-mixed flame The European Standard EN 60332-1-2:2004 has the status of a British Standard IC

2、S 13.220.40; 29.020; 29.060.20 Licensed Copy: Wang Bin, na, Fri Mar 25 01:36:01 GMT 2005, Uncontrolled Copy, (c) BSIBS EN 60332-1-2:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 10 December 2004 BSI 10 December 2004 ISBN 0 580 45029 5

3、National foreword This British Standard is the official English language version of EN 60332-1-2:2004. It is identical with IEC 60332-1-2:2004. BS EN 60332-1-2:2004 is technically equivalent to BS EN 50265-2-1:1999, which is withdrawn. The UK participation in its preparation was entrusted by Technic

4、al Committee GEL/20, Electric cables, to Subcommittee GEL/20/18, Fire testing, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publi

5、cations referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the nec

6、essary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the int

7、erpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 11 and a back cover. The BSI c

8、opyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments Licensed Copy: Wang Bin, na, Fri Mar 25 01:36:01 GMT 2005, Uncontrolled Copy, (c) BSIEUROPEAN STANDARD EN 60332-1-2 NORME EUROPENNE EUROPISCHE NORM Novem

9、ber 2004 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2004 CENELEC - All rights of exploitation in any form and by any means

10、reserved worldwide for CENELEC members. Ref. No. EN 60332-1-2:2004 E ICS 13.220.40; 29.020; 29.060.20 Supersedes EN 50265-2-1:1998English version Tests on electric and optical fibre cables under fire conditions Part 1-2: Test for vertical flame propagation for a single insulated wire or cable - Proc

11、edure for 1 kW pre-mixed flame (IEC 60332-1-2:2004) Essais des cbles lectriques et fibres optiques soumis au feu Partie 1-2: Essai de propagation verticale de la flamme sur conducteur ou cble isol - Procdure pour flamme prmlange de 1kW (CEI 60332-1-2:2004) Prfungen an Kabeln, isolierten Leitungen un

12、d Glasfaserkabeln im Brandfall Teil 1-2: Prfung der vertikalen Flammenausbreitung an einer Ader, einer isolierten Leitung oder einem Kabel - Prfverfahren mit 1 kW-Flamme mit Gas-/Luftgemisch (IEC 60332-1-2:2004) This European Standard was approved by CENELEC on 2004-09-01. CENELEC members are bound

13、to comply with the CEN/CENELEC 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 Cent

14、ral Secretariat 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 Central Secretariat has the same st

15、atus as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,

16、Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: Wang Bin, na, Fri Mar 25 01:36:01 GMT 2005, Uncontrolled Copy, (c) BSI Foreword The text of document 20/697/FDIS, future edition 1 of IEC 60332-1-2, prepared by IEC TC 20, Electric cables, was submitted to the IEC-CENE

17、LEC parallel vote and was approved by CENELEC as EN 60332-1-2 on 2004-09-01. This European Standard supersedes EN 50265-2-1:1998. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (do

18、p) 2005-06-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2007-09-01 Annex ZA has been added by CENELEC _ Endorsement notice The text of the International Standard IEC 60332-1-2:2004 was approved by CENELEC as a European Standard without any modific

19、ation. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60332-1-3 NOTE Harmonized as EN 60332-1-3:2004 (not modified). IEC 60332-2-2 NOTE Harmonized as EN 60332-2-2:2004 (not modified). _ Page2 EN6033212:2004Licensed Copy: Wang Bin, na,

20、 Fri Mar 25 01:36:01 GMT 2005, Uncontrolled Copy, (c) BSI CONTENTS 1 Scope.4 2 Normative references .4 3 Terms and definitions .5 4 Test apparatus .5 5 Procedure 5 5.1 Sample5 5.2 Conditioning5 5.3 Positioning of test piece 5 5.4 Flame application 6 6 Evaluation of test results 6 Annex A (informativ

21、e) Recommended performance requirements 9 Annex ZA (normative) Normative references to International publications with their corresponding European publications .11 Bibliography10 Page3 EN6033212:2004Licensed Copy: Wang Bin, na, Fri Mar 25 01:36:01 GMT 2005, Uncontrolled Copy, (c) BSITESTS ON ELECTR

22、IC AND OPTICAL FIBRE CABLES UNDER FIRE CONDITIONS Part 1-2: Test for vertical flame propagation for a single insulated wire or cable Procedure for 1 kW pre-mixed flame 1 Scope This part of IEC 60332 specifies the procedure for testing the resistance to vertical flame propagation for a single vertica

23、l electrical insulated conductor or cable, or optical fibre cable, under fire conditions. The apparatus is given in IEC 60332-1-1. NOTE 1 Testing to IEC 60332-1-2 may be performed simultaneously with that to IEC 60332-1-3 if required. Recommended requirements for performance are given in Annex A. IE

24、C 60332-1-2 specifies the use of a 1 kW pre-mixed flame and is for general use, except that the procedure specified may not be suitable for the testing of small single insulated conductors or cables of less than 0,5 mm total cross-section because the conductor melts before the test is completed, or

25、for the testing of small optical fibre cables because the cable is broken before the test is completed. In these cases, the procedure given in IEC 60332-2-2 is recommended. NOTE 2 Since the use of insulated conductor or cable which retards flame propagation and complies with the recommended requirem

26、ents of this standard is not sufficient by itself to prevent propagation of fire under all conditions of installation, it is recommended that wherever the risk of propagation is high, for example in long vertical runs of bunches of cables, special installation precautions should also be taken. It ca

27、nnot be assumed that because the sample of cable complies with the performance requirements recommended in this standard, that a bunch of cables will behave in a similar manner. (See IEC 60332-3 series.) 2 Normative references The following referenced documents are indispensable for the application

28、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 60332-1-1, Tests on electric and optical fibre cables under fire conditions Part 1-1: Test for vertical flame propagat

29、ion for a single insulated wire or cable Apparatus IEC 60695-4, Fire hazard testing Part 4: Terminology concerning fire tests IEC Guide 104, The preparation of safety publications and the use of basic safety publications and group safety publications Page4 EN6033212:2004Licensed Copy: Wang Bin, na,

30、Fri Mar 25 01:36:01 GMT 2005, Uncontrolled Copy, (c) BSI 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. The definitions are taken from IEC 60695-4. 3.1 ignition source source of energy that initiates combustion IEC 60695-4:1993, definition 2.76

31、3.2 char carbonaceous residue resulting from pyrolysis or incomplete combustion IEC 60695-4:1993, definition 2.12 4 Test apparatus The apparatus specified in IEC 60332-1-1 shall be used. 5 Procedure 5.1 Sample The test sample shall be a piece of single insulated conductor or cable (600 25) mm long.

32、5.2 Conditioning Before testing, all test pieces shall be conditioned at (23 5) C for not less than 16 h at a relative humidity of (50 20) %. In the case of a single insulated conductor or cable with a finish of paint or lacquer, this conditioning shall follow an initial period where the test piece

33、shall be kept at a temperature of (60 2) C for 4 h. 5.3 Positioning of test piece The test piece shall straightened and be secured to two horizontal supports by means of a suitable size of copper wire, in a vertical position in the centre of the metal screen, as described in 4.2 of IEC 60332-1-1, so

34、 that the distance between the bottom of the upper support and the top of the lower support is (550 5) mm. In addition, the test piece shall be positioned so that the bottom of the specimen is approximately 50 mm from the base of the screen (see Figure 1). The vertical axis of the test piece shall b

35、e arranged centrally within the screen (i.e. 150 mm from each side and 225 mm from the rear). Page5 EN6033212:2004Licensed Copy: Wang Bin, na, Fri Mar 25 01:36:01 GMT 2005, Uncontrolled Copy, (c) BSI5.4 Flame application Safety warning Precautions shall be taken to safeguard personnel against the fo

36、llowing when conducting tests: a) the risk of fire or explosion; b) the inhalation of smoke and/or noxious products, particularly when halogenated materials are burned; c) harmful residues. 5.4.1 Positioning of flame One burner, as described in 4.3 of IEC 60332-1-1, shall be ignited and the recommen

37、ded flow rates of gas and air adjusted. The burner shall be positioned so that the tip of the inner blue cone impinges on the surface of the test piece at a distance of (475 5) mm from the lower edge of the upper horizontal support, whilst the burner is at an angle of 45 2 to the vertical axis of th

38、e test piece (see Figure 2). For flat-form cables, the flame impingement shall be on the middle of the flat side of the cable. 5.4.2 Test duration The flame shall be applied continuously for the period of time corresponding to the diameter shown in Table 1. Table 1 Time for flame application Overall

39、 diameter of test piece a mm Time for flame application b s D 25 25 75 60 2 120 2 240 2 480 2 a Where non-circular cables (for example, flat-form constructions) are to be tested, the circumference shall be measured and used to calculate an equivalent diameter, as if the cable were circular. b For fl

40、at cables having a ratio of major to minor axis greater than 17:1, the flame application time remains under consideration. At the end of the specified test duration, the burner shall be removed and the flame of the burner extinguished. 6 Evaluation of test results After all burning has ceased, the t

41、est piece shall be wiped clean. All soot shall be ignored if, when wiped off, the original surface is undamaged. Softening or any deformation of the non-metallic materials shall also be ignored. The distance from the lower edge of the top support to the upper onset of charring and the distance from

42、the lower edge of the top support to the lower onset of charring shall be measured to the nearest millimetre. Page6 EN6033212:2004Licensed Copy: Wang Bin, na, Fri Mar 25 01:36:01 GMT 2005, Uncontrolled Copy, (c) BSI The onset of char shall be determined as follows. Press against the cable surface wi

43、th a sharp object, for example, a knife blade. Where the surface changes from a resilient to a brittle (crumbling) surface indicates the onset of charring. Dimensions in millimetres 1 2 3 300 25 1 200 25 600 25 550 5 AKey 1 metallic screen 2 support arm and copper wire fixing 3 test piece Distance A

44、: Length from base of screen to bottom of test piece = 50 mm (approximately) Figure 1 Arrangement of test piece in test apparatus IEC 1000/04 Page7 EN6033212:2004Licensed Copy: Wang Bin, na, Fri Mar 25 01:36:01 GMT 2005, Uncontrolled Copy, (c) BSI Dimensions in millimetres 475 5 1 2 45 2Key 1 lower

45、edge of top support 2 test piece Figure 2 Application of flame to test piece IEC 1001/04 Page8 EN6033212:2004Licensed Copy: Wang Bin, na, Fri Mar 25 01:36:01 GMT 2005, Uncontrolled Copy, (c) BSIAnnex A (informative) Recommended performance requirements The performance requirements for a particular t

46、ype or class of insulated conductor or cable should preferably be given in the individual cable standard. In the absence of any given requirement it is recommended that those given below should be taken as a minimum acceptable level. The single insulated conductor or cable shall pass the test if the

47、 distance between the lower edge of the top support and the onset of charring is greater than 50 mm. In addition, a failure shall be recorded if charring extends downwards to a point greater than 540 mm from the lower edge of the top support. If a failure is recorded, two more tests shall be carried

48、 out. If both tests result in passes, the single insulated conductor or cable shall be deemed to have passed the test. Page9 EN6033212:2004Licensed Copy: Wang Bin, na, Fri Mar 25 01:36:01 GMT 2005, Uncontrolled Copy, (c) BSIBibliography IEC 60332-1-3, Tests on electric and optical fibre cables under

49、 fire conditions Part 1-3: Test for vertical flame propagation for a single small insulated conductor or cable Procedure for determination of flaming droplets/particles IEC 60332-2-2, Tests on electric and optical fibre cables under fire conditions Part 2-2: Test for vertical flame propagation for a single small insulated conductor or cable Procedure for diffusion f