EN 60332-2-2-2004 en Tests on electric and optical fibre cables under fire conditions Part 2-2 Test for vertical flame propagation for a single small insulated wire or cable - Proc.pdf

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

2、ICS 13.220.40; 29.020; 29.060.20 BS EN 60332-2-2:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 9 December 2004 BSI 9 December 2004 ISBN 0 580 45015 5 National foreword This British Standard is the official English language version of E

3、N 60332-2-2:2004. It is identical with IEC 60332-2-2:2004. BS EN 60332-2-2:2004 is technically equivalent to BS EN 50265-2-2:1999, which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee GEL/20, Electric cables, to Subcommittee GEL/20/18, Fire testing, which

4、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 publications referred to in this document may be found in the BSI Catalogue under the sect

5、ion 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 necessary provisions of a contract. Users are responsible for its correct application. C

6、ompliance 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 interpretation, or proposals for change, and keep the UK interests informed; monitor rel

7、ated 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 14, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the d

8、ocument was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 60332-2-2 NORME EUROPENNE EUROPISCHE NORM November 2004 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elekt

9、rotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60332-2-2:2004 E ICS 13.220.40; 29.020; 29.060.20 Supersedes EN 50265-2-2:1998English version Tes

10、ts on electric and optical fibre cables under fire conditions Part 2-2: Test for vertical flame propagation for a single small insulated wire or cable - Procedure for diffusion flame (IEC 60332-2-2:2004) Essais des cbles lectriques et fibres optiques soumis au feu Partie 2-2: Essai de propagation ve

11、rticale de la flamme sur conducteur ou cble isol de petite section - Procdure pour une flamme de type diffusion (CEI 60332-2-2:2004) Prfungen an Kabeln, isolierten Leitungen und Glasfaserkabeln im Brandfall Teil 2-2: Prfung der vertikalen Flammenausbreitung an einer kleinen Ader, einer kleinen isoli

12、erten Leitung oder einem kleinen Kabel - Prfverfahren mit leuchtender Flamme (IEC 60332-2-2:2004) This European Standard was approved by CENELEC on 2004-09-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standa

13、rd 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 Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, Frenc

14、h, 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 status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, C

15、yprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Foreword The text of document 20/700/FDIS, futu

16、re edition 1 of IEC 60332-2-2, prepared by IEC TC 20, Electric cables, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60332-2-2 on 2004-09-01. This European Standard supersedes EN 50265-2-2:1998. The following dates were fixed: latest date by which the EN has to be

17、implemented at national level by publication of an identical national standard or by endorsement (dop) 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 Internat

18、ional Standard IEC 60332-2-2:2004 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following note has to be added for the standard indicated: IEC 60332-1-2 NOTE Harmonized as EN 60332-1-2:2004 (not modified). _ Page2 EN6033222:20

19、04CONTENTS 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 7 Annex A (informative) Recommended performance requirements 12Bibliorgaphy3

20、Page3 EN6033222:2004 TNOCENTS 1 cSpoe.9 2 roNmtaive referecnse.9 3 Terms dna definiitons .11 4 Test paparatus.11 5 rPcoedure11 .51 Sample11 .52 oCnditoinign11 .53 Positionign fo test picee 11 .54 lFmae appcilaiton31 6 Evlauation fo test resulst 51 Annex A (ifnromative) Recommdnede perfromacnr eeuqri

21、menest 52 Bibliography143egaP 4002:2223306NE Annex ZA (normative) Normative references to international publications with their corresponding European publications 13TESTS ON ELECTRIC AND OPTICAL FIBRE CABLES UNDER FIRE CONDITIONS Part 2-2: Test for vertical flame propagation for a single small insu

22、lated wire or cable Procedure for diffusion flame 1 Scope This part of IEC 60332 specifies the procedure for testing the resistance to vertical flame propagation for a single small vertical electrical insulated conductor or cable, or optical cable, under fire conditions. The apparatus is given in IE

23、C 60332-2-1. This standard gives the procedure for testing small optical fibre cables or a small insulated conductor or cable when the method specified in IEC 60332-1-2 is not suitable because some small optical fibre cables may break or small conductors may melt during the application of the flame.

24、 The recommended range of application is for the testing of small single insulated conductors or cables of less than 0,5 mm cross-section. NOTE Since the use of insulated conductor or cable which retards flame propagation and complies with the recommended requirements of this standard is not suffici

25、ent 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 cannot be assumed that because the sa

26、mple 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.) Recommended requirements for performance are given in Annex A. 2 Normative references The following referenced documents are indisp

27、ensable 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 60332-2-1, Tests on electric and optical cables under fire conditions Part 2-1: Test for v

28、ertical flame propagation for a single small 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 EN6033222:20043

29、 Terms and definitions For the purposes of this document, the following terms and definitions apply. The terms and definitions are taken from IEC 60695-4. 3.1 ignition source source of energy that initiates combustion IEC 60695-4:1993, definition 2.76 3.2 char carbonaceous residue resulting from pyr

30、olysis or incomplete combustion IEC 60695-4:1993, definition 2.12 4 Test apparatus The apparatus specified in IEC 60332-2-1 shall be used. 5 Procedure 5.1 Sample The test sample shall be a piece of insulated conductor or cable (600 25) mm long. 5.2 Conditioning Before testing, all test pieces shall

31、be conditioned at (23 5) C for not less than 16 h at a relative humidity of (50 20) %. In the case of an insulated conductor or cable with a finish of paint or lacquer, this conditioning shall follow an initial period where the test piece shall be kept at a temperature of (60 2) C for 4 h. 5.3 Posit

32、ioning of test piece 5.3.1 Cables with metallic conductors The test piece shall be straightened and fixed by means of a suitable size of metallic wire in a vertical position in the centre of the metal screen, as described in 4.2 of IEC 60332-2-1. A load of 5 N/mm of conductor area shall be attached

33、to the lower part of the sample so that the distance between the point where the load is attached and the lower edge of the top support measures (550 5) mm (see Figure 1). The vertical axis of the test piece shall be arranged centrally within the screen (i.e. 150 mm from each side and 225 mm from th

34、e rear). 5.3.2 Optical fibre cables The test piece shall be secured to two horizontal supports by means of a suitable size of metallic wire so 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

35、that the bottom of the specimen is approximately 50 mm from the base of the screen (see Figure 2). Page5 EN6033222:2004The vertical axis of the test piece shall be arranged centrally within the screen (i.e. 150 mm from each side and 225 mm from the rear). 5.4 Flame application Safety warning Precaut

36、ions shall be taken to safeguard personnel against the following 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 5.4.1.1 Cables with metall

37、ic conductors The burner shall be arranged as shown in Figure 3. The centre-line of the burner shall be at an angle of 45 2 to the centre line of the test piece. The horizontal distance between the centre line of the burner orifice and the surface of the test piece shall be (10 1) mm. The distance b

38、etween the point at which the burner centre line and test piece centre line intersect and the point where the load of 5 N/mm is applied shall be (100 10) mm. The distance between the point at which the burner and the test piece centre lines intersect and the lower edge of the top support shall not e

39、xceed 465 mm. The flame shall be applied so that it envelops the test piece. 5.4.1.2 Optical fibre cables The burner shall be arranged as shown in Figure 4. The centre-line of the burner shall be at an angle of 45 2 to the centre-line of the test piece. The horizontal distance between the centre lin

40、e of the burner orifice and the surface of the test piece shall be (10 1) mm. The distance between the point at which the burner centre-line and the test-piece centre-line intersect and the top edge of the lower support shall be (100 10) mm. The distance between the point at which the burner and tes

41、t piece centre-lines intersect and the lower edge of the upper horizontal support shall not exceed 465 mm. The flame shall be applied so that it envelops the test piece. 5.4.2 Test duration 5.4.2.1 Cables with metallic conductors The flame shall be applied to the test piece for a duration of (20 1)

42、s. If the test piece is intact, i.e. no melting of conductor, the test shall be evaluated in accordance with Clause 6. Should the metallic conductor prematurely melt, at a time T less than the test duration, the test shall be repeated on a further test piece for a duration of (T 2) s. The assessment

43、 shall then be based only on the further test piece. 5.4.2.2 Optical fibre cables The flame shall be applied to the test piece for a duration of (20 1) s. Page6 EN6033222:20046 Evaluation of test results After all burning has ceased, the test piece shall be wiped clean. All soot shall be ignored if,

44、 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 the lower edge of the top support to the lower onset of charr

45、ing shall be measured to the nearest millimetre. The onset of char shall be determined as follows: Press against the cable surface with 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. Page7 EN603

46、3222:2004Dimensions in millimetres 1 2 3 300 25 1 200 25 600 25 550 5 5 N/mm 2Key 1 support and cable fixing 2 test piece 3 fixing for load Figure 1 Arrangement of test piece (metallic conductor) IEC 1004/04 Page8 EN6033222:2004Dimensions in millimetres 2 1 300 25 1 200 25 600 25 550 5 AKey 1 suppor

47、t arm and metallic wire fixing 2 test piece Distance A: Length from base of screen to bottom of sample = 50 mm (approximately) Figure 2 Arrangement of test piece (optical fibre cable) IEC 1005/04 Page9 EN6033222:2004 Dimensions in millimetres 45 2 10 1 100 10 2 5 N/mm 2 1Key 1 flame to envelop test

48、piece 2 point of attachment of load Figure 3 Application of burner to test piece (metallic conductor) IEC 1006/04 Page10 EN6033222:2004 Dimensions in millimetres 10 1 100 10 2 1 45 2Key 1 flame to envelop test piece 2 top edge of lower support Figure 4 Application of burner to test piece (optical fi

49、bre cable) IEC 1007/04 Page11 EN6033222:2004Annex A (informative) Recommended performance requirements The performance requirements for a particular type 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 s