BS EN 50200-2015 Method of test for resistance to fire of unprotected small cables for use in emergency circuits《紧急线路用非保护型小电缆的耐火性试验方法》.pdf

1、BSI Standards PublicationBS EN 50200:2015Method of test for resistanceto fire of unprotected smallcables for use in emergencycircuitsBS EN 50200:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 50200:2015.It supersedes BS EN 50200:2006 which is withdrawn.The

2、 UK participation in its preparation was entrusted to TechnicalCommittee GEL/20/18, Electric Cables - Fire testing.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract.

3、Users are responsible for its correctapplication. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 82863 8ICS 13.220.40; 29.035.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the

4、authority of theStandards Policy and Strategy Committee on 31 December 2015.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 50200:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 50200 December 2015 ICS 13.220.40; 29.035.20 Supersedes EN 50200:2006 English Ver

5、sion Method of test for resistance to fire of unprotected small cables for use in emergency circuits Mthode dessai de la rsistance au feu des cbles de petites dimensions sans protection pour utilisation dans les circuits de secours Prfung des Isolationserhaltes im Brandfall von Kabeln mit kleinen Du

6、rchmessern fr die Verwendung in Notstromkreisen bei ungeschtzter Verlegung This European Standard was approved by CENELEC on 2015-09-14. 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 nati

7、onal standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A

8、 version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulg

9、aria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzer

10、land, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CENELEC All rights of exploitation in an

11、y form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 50200:2015 E BS EN 50200:2015EN 50200:2015 2 Contents Page European foreword 4 1 Scope . 5 2 Normative references 5 3 Terms and definitions 6 4 Test environment 6 5 Test apparatus 6 5.1 Test equipment 6 5.2 Test wall and mou

12、nting 7 5.3 Continuity checking arrangement for electric power and control cables with rated voltage up to and including 600 V/1 000 V . 7 5.4 Source of heat . 8 5.5 Shock producing device . 8 5.6 Positioning of source of heat 8 5.7 Fuses. 9 6 Verification procedure for source of heat . 9 6.1 Measur

13、ing equipment . 9 6.2 Procedure 9 6.3 Evaluation 9 6.4 Further verification . 10 6.5 Verification report 10 7 Test sample (Electric power and control cables with rated voltage up to and including 600 V/1 000 V) 10 7.1 Sample preparation 10 7.2 Sample mounting . 10 8 Cable test procedure (Electric po

14、wer and control cables with rated voltage up to and including 600 V/1 000 V) . 10 8.1 General 10 8.2 Electrical connections 10 8.3 Flame and shock application 11 8.4 Electrification . 11 8.5 Duration of survival 12 8.6 Point of failure . 12 9 Test report (Electric power and control cables with rated

15、 voltage up to and including 600 V/1 000 V) 12 Annex A (informative) Guidance on the choice of recommended test equipment . 22 A.1 Burner and Venturi . 22 A.2 Test wall material . 22 A.3 Rubber bushing . 22 BS EN 50200:2015EN 50200:2015 3 Annex B (normative) Field of direct application and extended

16、application of test results (Electric power and control cables with rated voltage up to and including 600 V/1 000 V) 23 B.1 Definitions 23 B.2 Field of direct application . 23 B.3 Extended Application of test results (EXAP) . 24 Annex C (normative) Fuse characteristic curve . 26 Annex D (informative

17、) Information regarding classification . 27 D.1 General 27 D.2 Functional requirement (PH) and Interpretation 27 D.3 Classification . 27 Annex E (informative) Guidance for using optional water spray protocol . 28 E.1 General 28 E.2 Modifications for optional water spray protocol . 28 Bibliography 31

18、 Figures Figure 1 Schematic of test configuration . 13 Figure 2 Plan view of test equipment . 14 Figure 3 End elevation of test equipment (not to scale) . 15 Figure 4 Typical rubber bush (hardness: 50-60 shore A) for fastening the wall to the rigid supports 16 Figure 5 Burner face . 17 Figure 6 Sche

19、matic diagram of an example of a burner control system . 18 Figure 7 Temperature measuring arrangement 19 Figure 8 Example of method of mounting a sample for test . 20 Figure 9 Basic circuit diagram Electric power and control cables with rated voltage up to and including 600 V/1 000 V 21 Figure C.1

20、Fuse characteristic curve . 26 Figure E.1 Water spray tube . 29 Figure E.2 Water spray application . 29 BS EN 50200:2015EN 50200:2015 4 European foreword This document (EN 50200:2015) has been prepared by Working Group 10 of CLC/TC 20 “Electric cables”. The following dates are fixed: latest date by

21、which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2016-09-14 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2018-09-14 This document supersedes EN 50200:2006. The m

22、ain changes compared to EN 50200:2006 are as follows (minor changes are not listed): detailed procedures for metallic data cables and for optical fibre cables have been removed as they are now given in the relevant standards of CLC/TC 46X and CLC/TC 86A. These standards refer to EN 50200 for the bas

23、ic test method; recasting and extension of the existing Annex D into two new Annexes, Annex B “Field of direct application and extended application of test results (Electric power and control cables with rated voltage up to and including 600 V/1 000 V) and Annex D “Information regarding classificati

24、on”. The cable is tested in a representative installed condition, under conditions of minimum bending radius, and the test is based upon a constant temperature attack at a minimum test temperature of 830 C. This is typical of the gas temperature reached after 30 min exposure to the time/temperature

25、conditions prescribed in EN 1363-1. The test method in this document includes exposure to fire with mechanical shock under specified conditions and satisfies the requirements of Mandate M/117 for the PH classification. This European Standard also includes (Annex E) a means of applying a water spray

26、to the cable during the test, which is not required under Mandate M/117. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. This document

27、 has been prepared under a mandate given to CENELEC by the European Commission and the European Free Trade Association. BS EN 50200:2015EN 50200:2015 5 1 Scope This European Standard specifies the test method for cables designed to have intrinsic resistance to fire and intended for use as emergency

28、circuits for alarm, lighting and communication purposes. This European Standard is applicable to cables for emergency circuits of rated voltage not exceeding 600 V/1 000 V, including those of rated voltage below 80 V and optical fibre cables. This European Standard includes details for the specific

29、point of failure, continuity checking arrangement, test sample, test procedure and test report relevant to electric power and control cables with rated voltage up to and including 600 V/1 000 V. Details for the specific point of failure, continuity checking arrangement, test sample, test procedure a

30、nd test report relevant to copper data and telecom cables and optical cables are given in the relevant standards of CLC/TC 46X and CLC/TC 86A. The test method is limited to cables with an overall diameter not exceeding 20 mm. The test method is based on the direct impingement of flame from a propane

31、 burner giving a constant temperature attack of a notional 842 C. It is intended to be used for cables for emergency circuits suitable for alarm, emergency lighting and communication. NOTE When the test method is used in support of EN 135013, it only applies to cables of less than 20 mm diameter, an

32、d, for metallic conductor cables, to those with conductor sizes up to and including 2,5 mm2. For optical cables, only the less than 20 mm diameter limit applies. This European Standard includes (Annex B) the field of direct application and rules for extended application of test results (EXAP). Detai

33、ls regarding classification using data from this test are given in EN 13501-3 1). Information regarding classification is given in Annex D. This European Standard also includes informative guidance (Annex E) on a means of applying a water spray to the cable during the test. Such a requirement may be

34、 a feature of particular product standards. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of

35、the referenced document (including any amendments) applies. EN 13501-3, Fire classification of construction products and building elements - Part 3: Classification using data from fire resistance tests on products and elements used in building service installations: fire resisting ducts and fire dam

36、pers EN 60584-1, Thermocouples - Part 1: EMF specifications and tolerances (IEC 60584-1) EN 60695-4, Fire hazard testing - Part 4: Terminology concerning fire tests for electrotechnical products (IEC 60695-4) EN ISO 13943, Fire safety - Vocabulary (ISO 13943) 1) At the time of finalizing EN 50200, a

37、n amendment to EN 13501-3:2005+A1:2009 concerning cables is under consideration in CEN/TC 127. BS EN 50200:2015EN 50200:2015 6 IEC 60269-3:2010 and IEC 602693:2010/A1:2013, Low-voltage fuses Part 3: Supplementary requirements for fuses for use by unskilled persons (fuses mainly for household and sim

38、ilar applications) - Examples of standardized systems of fuses A to F 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 13943 and EN 60695-4 and the following apply. 3.1 draught-free environment space in which the results of tests are not significan

39、tly affected by the local air speed 4 Test environment The test shall be carried out in a draught-free environment within a suitable chamber, of minimum volume 20 m3, with facilities for disposing of any noxious gases resulting from the burning. Sufficient ventilation shall be available to sustain t

40、he flame for the duration of the test. Air inlets and the exhaust chimney should be located in such a way that the burner flame remains stable during the verification procedure and test. If necessary, the burner shall be shielded from any draughts by the use of draught shields. Windows may be instal

41、led in the walls of the chamber in order to observe the behaviour of the cable during the test. Fume exhaust should be achieved by means of natural draught through a chimney located at least 1 m from the burner. A damper may be used for adjustment of ventilation conditions. The same ventilation and

42、shielding conditions shall be used in the chamber during both the verification and cable test procedures. The chamber and test apparatus shall be at (25 15) C at the start of each test. NOTE The test given in this European Standard may involve the use of dangerous voltages and temperatures. Suitable

43、 precautions should be taken against shock, burning, fire and explosion risks that may be involved and against any noxious fumes that may be produced. 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

44、 board manufactured from heat resisting non-combustible material suitable for the temperatures involved fastened to steel supports and mounted on a rigid support as described in 5.2; b) a continuity checking arrangement as described in 5.3; c) a source of heat comprising a horizontally mounted ribbo

45、n burner as described in 5.4; d) a shock producing device as described in 5.5; BS EN 50200:2015EN 50200:2015 7 e) a test wall equipped with thermocouples for verification of the source of heat as described in 6.1; f) fuses as described in 5.7. A general arrangement of the test equipment is shown in

46、Figure 1, Figure 2 and Figure 3. 5.2 Test wall and mounting The test wall shall consist of a board of heat resisting, non-combustible and non-metallic material fastened rigidly to two horizontal steel supports, one at the top of the board and the other at the bottom. Vertical supports may also be us

47、ed. The board shall be (900 100) mm long, (300 50) mm high and (10 2) mm thick, and the total mass of the wall (i.e. board and steel supports) shall be (10 0,5) kg. Ballast, if required, shall be placed inside the steel supports. Guidance on the choice of suitable material for the wall is given in A

48、nnex A. Boards should not be re-used if they show significant damage. In case of dispute, a new board shall be used for each test. NOTE 1 Supports made from square section steel tube approximately 25 mm x 25 mm and approximately 1 m long have been found to be suitable. NOTE 2 The top support should

49、be fastened to the board so that its upper face is slightly above the upper edge of the board, so that the shock producing device impacts on the support and not the board. Each horizontal support shall have a mounting hole at each end, not more than 100 mm from the edge of the board, the exact position and diameter being determined by the particular supporting bush and supporting framework used. The test wall shall be fastened to a rigid support by four bonded rubber bushes of hardness 50-60 Shore A fitted between the hor