1、BRITISH STANDARDBS EN 61034-1:2005Measurement of smoke density of cables burning under defined conditions Part 1: Test apparatusThe European Standard EN 61034-1:2005 has the status of a British StandardICS 13.220.40; 29.20; 29.060.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g5
2、1g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Licensed Copy: Wang Bin, na, Thu Mar 16 01:56:11 GMT 2006, Uncontrolled Copy, (c) BSIBS EN 61034-1:2005This British Standard was published under the authority of the S
3、tandards Policy and Strategy Committee on 4 January 2006 BSI 4 January 2006ISBN 0 580 46192 0National forewordThis British Standard is the official English language version of EN 61034-1:2005. It is identical with IEC 61034-1:2005. It supersedes, and is technically equivalent to, BS EN 50268-1:2000,
4、 which is withdrawn.The UK participation in its preparation was entrusted by Technical Committee GEL/20, Electric cables, to Subcommittee GEL/20/18, Fire testing, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any en
5、quiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.A list of organizations represented on this subcommittee can be obtained on request to its secretary.Cross-referencesThe Briti
6、sh Standards which implement international or European publications 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 Onli
7、ne.This publication does not purport to include all the necessary 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.Summary of pagesThis document comprises a front cover, an inside
8、front cover, the EN title page, pages 2 to 15 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsLicensed Copy: Wang Bin, na, Thu Mar 16 01:56:11 GMT 2006, Uncontrolled Copy, (c) BS
9、IEUROPEAN STANDARD EN 61034-1 NORME EUROPENNE EUROPISCHE NORM August 2005 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 2005 C
10、ENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61034-1:2005 E ICS 13.220.40; 29.20; 29.060.20 Supersedes EN 50268-1:1999English version Measurement of smoke density of cables burning under defined conditions Part 1: Test apparatus
11、 (IEC 61034-1:2005) Mesure de la densit de fumes dgages par des cbles brlant dans des conditions dfinies Partie 1: Appareillage dessai (CEI 61034-1:2005) Messung der Rauchdichte von Kabeln und isolierten Leitungen beim Brennen unter definierten Bedingungen Teil 1: Prfeinrichtung (IEC 61034-1:2005) T
12、his European Standard was approved by CENELEC on 2005-06-01. 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 national standard without any alteration. Up-to-date lists and bibliographical r
13、eferences 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 any other language made by translation under the responsibility of a CENEL
14、EC 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Irelan
15、d, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: Wang Bin, na, Thu Mar 16 01:56:11 GMT 2006, Uncontrolled Copy, (c) BSIForeword The text of document 20/754/FDIS, future edition 3 o
16、f IEC 61034-1, prepared by IEC TC 20, Electric cables, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61034-1 on 2005-06-01. The principal change with respect to EN 50268-1 is a closer definition of the support for the cable(s) under test. The following dates were f
17、ixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2006-03-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2008-06-01 Annex ZA has been added by CENELEC.
18、_ Endorsement notice The text of the International Standard IEC 61034-1:2005 was approved by CENELEC as a European Standard without any modification. _ EN 61034-1:2005 2 Licensed Copy: Wang Bin, na, Thu Mar 16 01:56:11 GMT 2006, Uncontrolled Copy, (c) BSI 3 EN 61034-1:2005 CONTENTS INTRODUCTION 4 1
19、Scope 5 2 Normative references .5 3 Terms and definitions .5 4 Details of test enclosure .5 5 Photometric system6 6 Standard fire source.7 7 Smoke mixing.7 8 Blank test.7 8.1 Purpose 7 8.2 Procedure .7 9 Qualification of test apparatus 7 10 Qualification burning test8 10.1 Purpose 8 10.2 Preparation
20、 of cube .8 10.3 Qualification fire sources .8 10.4 Test procedure 8 10.5 Calculation 8 10.6 Requirements8 Annex A (informative) Guidance notes .12 Annex ZA (normative) Normative references to international publications with their corresponding European publications .15 Bibliography .14 Figure 1 Pla
21、n view of test chamber 9 Figure 2 Photometric system10 Figure 3 Metal tray.11 Licensed Copy: Wang Bin, na, Thu Mar 16 01:56:11 GMT 2006, Uncontrolled Copy, (c) BSIEN 61034-1:2005 4 INTRODUCTION The measurement of smoke density is an important aspect in the evaluation of the burning performance of ca
22、bles as it is related to the evacuation of persons and accessibility for firefighting. IEC 61034 is published in two parts, which together specify a method of test for measurement of smoke density of cables burning under defined conditions. Users of this test are reminded that the configurations of
23、cable in the test (i.e. as test pieces or bundles of test pieces) may not represent actual installation conditions. This Part 1 gives details of the test apparatus and verification procedure to be used for the measurement of smoke density of the products of combustion of cables burnt under defined c
24、onditions. It includes details of a test enclosure of 27m3volume, a photometric system for light measurement, the fire source, smoke mixing method and a qualification procedure. Annex A gives guidance on various aspects of the test apparatus which may be useful when first constructing the test enclo
25、sure. Part 2 gives the test procedure, together with an informative annex giving recommended requirements for compliance where no specified requirement is given in the particular cable standard or specification. Licensed Copy: Wang Bin, na, Thu Mar 16 01:56:11 GMT 2006, Uncontrolled Copy, (c) BSI 5
26、EN 61034-1:2005 MEASUREMENT OF SMOKE DENSITY OF CABLES BURNING UNDER DEFINED CONDITIONS Part 1: Test apparatus 1 Scope This part of IEC 61034 provides details of the test apparatus to be used for measuring smoke emission when electric or optical fibre cables are burnt under defined conditions, for e
27、xample, a few cables burnt horizontally. The light transmittance (lt) under flaming combustion and smouldering conditions can be used as a means of comparing different cables or complying with specific requirements. NOTE For the purposes of this standard, the term “electric cable“ covers all insulat
28、ed metallic conductor cables used for the conveyance of energy or signals. 2 Normative references The 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 referen
29、ced document (including any amendments) applies. IEC 60695-4, Fire hazard testing Part 4: Terminology concerning fire tests IEC Guide 104:1997, The preparation of safety publications and the use of basic safety publications and group safety publications ISO/IEC 13943:2000, Fire safety Vocabulary 3 T
30、erms and definitions For the purposes of this document, the terms and definitions in IEC 60695-4 apply, or if a term is not defined in IEC 60695-4 then the definition in ISO/IEC 13943 applies. 4 Details of test enclosure The equipment shall comprise a cubic enclosure with inside dimensions of 3 000
31、mm 30 mm and constructed of a suitable material fixed on to a steel angle frame. One side shall have a door, with a glass inspection window. Transparent sealed windows (minimum size 100 mm 100 mm) shall be provided on two opposite sides to permit the transmission of a beam of light from the horizont
32、al photometric system. The distance from the floor to the centre of these windows shall be 2 150 mm 100 mm (see Figure 1 for plan view). The walls of the enclosure shall include orifices at ground level (i.e. not greater than 100 mm above the level of the chamber floor) for the passage of cables, et
33、c., and to permit the enclosure to be at atmospheric pressure. No orifice shall be directly behind the fire source or on the same wall. A minimum of two orifices shall be provided and the total area of the orifices open during the test shall be 50 cm2 10 cm2. NOTE 1 Two orifices, each with an area o
34、f 25 cm 5 cm, and located on two opposite walls, one under the light source and one under the receiver have been found to be suitable. Licensed Copy: Wang Bin, na, Thu Mar 16 01:56:11 GMT 2006, Uncontrolled Copy, (c) BSIEN 61034-1:2005 6 The ambient temperature outside the enclosure shall be 20 C 10
35、 C and the enclosure shall not be directly exposed to sunlight or extreme climatic changes. NOTE 2 It should normally be possible to extract fumes from the enclosure after each test through a duct complete with valve which should be closed during the test. The duct may include a fan to increase the
36、rate of extraction. It is recommended that the door of the enclosure be opened to assist the extraction process. A draught screen, 1 500 mm 50 mm long and 1 000 mm 50 mm high, shall be placed in the enclosure, at the position shown in Figure 1. It shall abut on the back wall (with a maximum gap of 1
37、0 mm) at a point 750 mm 25 mm from the side wall, and shall be curved to intersect the centre line of the enclosure at a point 1 400 mm 25 mm from the point of abutment. 5 Photometric system 5.1 The photometric system is illustrated in Figure 2. The light source and the receiver shall be placed exte
38、rnally in the centre of both windows in the two opposite walls of the cube without making physical contact. The light beam shall traverse the cube through the glass windows in the side walls. 5.2 The light source shall be a halogen lamp with a tungsten filament with a clear quartz bulb having the fo
39、llowing characteristics: nominal power: 100 W; nominal voltage: 12 V d.c.; nominal luminous flux: 2 000 lm to 3 000 lm; nominal colour temperature: 2 800 K to 3 200 K. The bulb shall be supplied with a voltage of 12,0 V 0,1 V (mean value). During the test, the voltage shall be stabilized to a range
40、of 0,01 V (see A.2c) for additional guidance.) The lamp shall be mounted in a housing and the beam adjusted by a lens system to give an evenly illuminated circular area of 1,5 m 0,1 m diameter on the interior of the opposite wall. 5.3 The receptor photocell shall be of the selenium or silicon type w
41、ith a spectral response matching the International Commission on Illumination (CIE) photopic observer (equivalent to the human eye). The photocell shall be mounted at the end of 150 mm 10 mm tube with a dust protection window at the other end. The inside of the tube shall be matt black to prevent re
42、flections. The photocell shall be connected to a potentiometric recorder to produce a linear proportional output. The cell shall be resistance-loaded to operate in its linear range and the input impedance of the recorder shall be at least 104times greater than the load resistance of the cell which s
43、hall not exceed 100 . 5.4 The photometric system shall be energized before the blank test. When stability has been attained, the zero and full scale reading of the recorder shall be adjusted for light on the detector corresponding to 0 % (absence of light) and 100 % luminous transmission. NOTE 1 Per
44、iodically, for example at the beginning of a test series, the performance of the photocell should be verified by placing standard neutral density filters in the light beam. It is essential that these filters cover the entire optical port of the photocell and the values of transmittance measured by t
45、he photocell give a value of parameter A within 5 % of the calibrated value of the filter. The filters should also permit the verification of the linearity of response of the detector which should be proportional to the transmittance of light in the range used. NOTE 2 Most neutral density filters ar
46、e designated according to a parameter defined as absorbance which is the same as the parameter A defined in 10.5 which may be used to convert measured transmittance. Licensed Copy: Wang Bin, na, Thu Mar 16 01:56:11 GMT 2006, Uncontrolled Copy, (c) BSI 7 EN 61034-1:2005 6 Standard fire source The sta
47、ndard fire source shall be 1,00 l 0,01 l of alcohol having the following composition by volume: ethanol: 90 % 1 % methanol: 4 % 1 % water: 6 % 1 %. When a denaturing agent is added to the alcohol, it shall have no effect on the smoke emission of any cable under test. The alcohol shall be contained i
48、n a tray made from galvanized or stainless steel with jointed sealed edges, a trapezoidal trunk section and the following interior dimensions (see Figure 3): bottom base: (210 2) mm (110 2) mm; top base: (240 2) mm (140 2) mm; height: (80 2) mm; thickness of tray: (1,0 0,1) mm. The tray shall be sup
49、ported at a height of 100 mm 10 mm from the floor on an open sided framework to permit air circulation around and beneath the tray. 7 Smoke mixing In order to ensure uniform distribution of the smoke, a table-type fan shall be placed on the floor of the cube as shown in Figure 1, the fan axis being between 200 mm and 300 mm from the floor and the distance from the wall being 500 mm 50 mm. The fan shall have a blade sweep of 300 mm 60 mm and a flow rate o
