1、BRITISH STANDARDBS EN 50289-4-4:2008Communication cables Specifications for test methods Part 4-4: Environmental test methods Resistance to solvents and contaminating fluidsICS 33.120.10g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g5
2、5g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 50289-4-4:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2008 BSI 2008ISBN 978 0 580 57843 4National forewordThis British Standard is th
3、e UK implementation of EN 50289-4-4:2008.The UK participation in its preparation was entrusted to Technical Committee EPL/46, Cables, wires and waveguides, radio frequency connectors and accessories for communication and signalling.A list of organizations represented on this committee can be obtaine
4、d on request to its secretary.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 cannot confer immunity from legal obligations. Amendments/corrigenda issued since publicationDat
5、e CommentsEUROPEAN STANDARD EN 50289-4-4 NORME EUROPENNE EUROPISCHE NORM January 2008 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Bru
6、ssels 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50289-4-4:2008 E ICS 33.120.10 English version Communication cables - Specifications for test methods - Part 4-4: Environmental test methods - Resistance to solvents and c
7、ontaminating fluids Cbles de communication - Spcifications des mthodes dessai - Partie 4-4: Mthodes dessais denvironnement - Rsistance aux solvants et aux fluides contaminants Kommunikationskabel - Spezifikationen fr Prfverfahren - Teil 4-4: Umweltprfverfahren - Widerstandsfhigkeit gegen Lsemittel u
8、nd verunreinigende Flssigkeiten This European Standard was approved by CENELEC on 2007-09-01. 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
9、-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 any other language made by translation un
10、der 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, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Fr
11、ance, 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 50289-4-4:2008 - 2 - Foreword This European Standard was prepared by the Techni
12、cal Committee CENELEC TC 46X, Communication cables. The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC as EN 50289-4-4 on 2007-09-01. The following dates were fixed: - latest date by which the EN has to be implemented at national level by publication o
13、f an identical national standard or by endorsement (dop) 2008-09-01 - latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2010-09-01 This European Standard has been prepared under the European Mandate M/212 given to CENELEC by the European Commission and th
14、e European Free Trade Association. _ BS EN 50289-4-4:2008- 3 - EN 50289-4-4:2008 Contents 1 Scope 4 2 Normative references. 4 3 Definitions. 4 4 General 4 5 Test fluids . 4 5.1 List of test fluids. 5 5.2 Precaution . 5 6 Procedure 5 7 Final measurements 6 8 Information to be given in the relevant sp
15、ecification. 6 8.1 Requirements. 6 9 Test report. 6 Table 1 - Fuels, lubricants, hydraulic fluids and anti-freeze agents . 5 Table 2 - Cleaning agents and moisture repellents. 5 BS EN 50289-4-4:2008EN 50289-4-4:2008 - 4 - 1 Scope This Part 4-4 of EN 50289 details the method of test to determine the
16、ability of a cable used in analogue and digital communication systems to withstand solvents and contaminating fluids. It is to be read in conjunction with Part 4-1 of EN 50289, which contains essential provisions for its application. 2 Normative references The following referenced documents are indi
17、spensable 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. EN 50289-4-1 2001 Communication cables - Specifications for test methods Part 4-1: Environme
18、ntal test methods - General requirements EN 50290-1-2 2004 Communication cables Part 1-2: Definitions 3 Definitions For the purposes of this document, the definitions of EN 50290-1-2 apply. 4 General The properties of plastic materials can be changed during and after contact with contaminating fluid
19、s or solvents. The changes may differ even when the fluid or solvents are from the same family with similar content. A cable can therefore not generally be regarded as resistant against solvents and contaminating fluids. It can be only stated as resistant against such fluids against it has been test
20、ed. 5 Test fluids Fluids with possible detrimental effect on r.f. cables are given in the following two lists, together with the temperature at which the conditioning should be carried out. The test fluids shall be prescribed in the relevant detail or sectional specification and shall be preferably
21、selected from Tables 1 and 2 below. Other test fluids, test temperatures and test times may be agreed between customer and supplier. BS EN 50289-4-4:2008- 5 - EN 50289-4-4:2008 5.1 List of test fluids Table 1 - Fuels, lubricants, hydraulic fluids and anti-freeze agents Test fluid Test temperature a)
22、 A mixture of toluene (aromatic) 30 % and isoctane (aliphatic) 70 % (volume) 40 C 2 C b) Wide cut aviation turbine fuel Fluids a) and b) are representative of the worst possible combination of solvents likely to be encountered in cable applications. 70 C 2 C c) Di-octyl sebacate (aircraft turbine en
23、gine lubrication oil) a150 C 2 C d) Mineral oil, viscosity approximately 15 cSt at 38 C 70 C 2 C e) Castor oil 20 %, 2-ethoxyethanol 80 % (volume) (this represents a normal hydraulic fluid) 20 C 2 C f) Phosphate ester hydraulic fluid (synthetic hydraulic fluid) 70 C 2 C g) Dimethyl silicone fluid (h
24、igh temperature hydraulic fluid) a150 C 2 C h) Lithium soap/synthetic oil grease (low temperature grease) 20 C 2 C i) Monopropylene glycol (de-icing fluid) 20 C 2 C aThese fluids are only to be tested on special high temperature cable with a specified operating temperature 150 C. Table 2 - Cleaning
25、agents and moisture repellents Test fluid Test temperature a) Carbon tetrachloride 15 C to 35 C b) Trichloroethylene, type C 15 C to 35 C c) White spirit 15 C to 35 C d) Petroleum jelly 15 C to 35 C 5.2 Precaution Warning note Many of the fluids listed are highly inflammable and may also have toxic
26、effects. 6 Procedure For each test with a new medium, a new test sample shall be used. A test sample of sufficient length for the required tests shall be taken from the finished cable and immersed in the test fluid. the bending radius during immersion shall be the minimum bending radius according to
27、 the relevant sectional or detail specification. Unless otherwise prescribed by the relevant specification the period of immersion shall be 18 h at the test temperature indicated. After completion of the conditioning, the specimen shall be wiped clean of surplus fluid and then allowed to dry for 2 h
28、 at 70 C, unless a lower value is prescribed by the relevant sectional or detail specification, whereupon they are exposed to standard atmospheric recovery conditions for 1,5 h to 2 h. BS EN 50289-4-4:2008EN 50289-4-4:2008 - 6 - 7 Final measurements At the conclusion of the recovery period, the cabl
29、es shall meet the requirements of the relevant detail or sectional specification for the following properties, unless otherwise specified: a) visual inspection of all construction elements; b) mechanical dimensions; c) voltage withstanding of dielectric and sheath; d) tensile strength and elongation
30、 at break of dielectric and sheath; e) transmission characteristics. 8 Information to be given in the relevant specification a) applicable conditioning fluids; b) drying temperature, if different from 70 C; c) requirements for final measurements; d) any deviation from the standard test procedure. 8.
31、1 Requirements No visible damage or visible change. The electrical and mechanical characteristics shall remain within the specified limits. 9 Test report The test report shall include test temperature, duration of immersion, indicate whether the specimen passes or fails the test. NOTE In case of dif
32、ferent solvents or contaminating fluids, the influence of those fluids to the cable characteristics may change after a drying period of hours or days. Tests may be repeated after a recovery time which is agreed between customer and supplier. Time and test results shall be reported in the test report
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