1、Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 10/12/2007 03:17, Uncontrolled Copy, (c) BSIg49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58c
2、onstruction PVC insulating compoundsThe European Standard EN 50290-2-21:2001, incorporating amendment A1:2007, has the status of a British StandardICS 33.120.01; 29.060.20Communication cables Part 2-21: Common design rules and BRITISH STANDARDBS EN 50290-2-21:2002Incorporating corrigendum no. 1 and
3、amendment no. 1BS EN 50290-2-21:2002Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 10/12/2007 03:17, Uncontrolled Copy, (c) BSIThis British Standard was published under the authority of the Standards Policy and Strategy Committee on 22 January 2002 BSI 2007ISBN 978 0 580 59710 7Compliance wi
4、th a British Standard cannot confer immunity from legal obligations.Amendments issued since publicationAmd. No. Date Comments16125 Corrigendum No. 1March 2006 Addition of supersession details17302 31 August 2007 See national forewordcommunication and signalling, to Subcommittee EPL/46/1, Communicati
5、ons cables. A list of organizations represented on this subcommittee can be obtained 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. National forewordThis British Standard is the U
6、K implementation of EN 50290-2-21:2001, incorporating amendment A1:2007. It supersedes BS 7878-1:1997 which is withdrawn.The start and finish of text introduced or altered by amendment is indicated in the text by tags !“. Tags indicating changes to CENELEC text carry the number of the CENELEC amendm
7、ent. For example, text altered by CENELEC amendment A1 is indicated by !“.The UK participation in its preparation was entrusted by Technical Committee EPL/46, Cables, wire and waveguides, RF connectors, and accessories for EUROPISCHE NORMICS 29.035.20; 4Cbles de communicationPartie 2-21: Rcommunes e
8、t construction Mlanges en PVC pour enveloppes isolantescomply 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 s
9、tandards may be obtained on l StanLicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 10/12/2007 03:17, Uncontrolled Copy, (c) BSIEuropisches Komitee fr ElektrotechnischeCentral Secretariat: rue de Stassart 35 2001 CENELEC - All rights of exploitation in any form and by any means reserved worNorm
10、ung, B - 1050 Brusselsldwide for CENELEC members.Ref. No. EN 50290-2-21:2001 EEuropean Committee for ElectrotechnicaComit Europen de Normalisation ElectrodardizationtechniqueDenmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, S
11、weden, Switzerland and United Kingdom.CENELECapplication 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 CENELEC member into its o
12、wn 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, Czech Republic, Communication cables Part 2-21: Common design rules and construction PVC insulation compoundsgles de conc
13、eption Kommunikationskabel Teil 2-21: Gemeinsame Regeln fr Entwicklung und Konstruktion PVC-IsoliermischungenThis European Standard was approved by CENELEC on 2001-03-01. CENELEC members are bound to 33.120.10 Supersedes HD 624.1 S1:199English version+A1June 2007EUROPEAN STANDARDNORME EUROPENNEEN 50
14、290-2-21October 2001EN 50290-2-21:2001 - 2 -Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 10/12/2007 03:17, Uncontrolled Copy, (c) BSIForewordThis European Standard was prepared by a joint working group of the Technical Committees CENELEC TC 46X, Communication cables, and CENELEC TC 86A, Op
15、tical fibres and optical fibre cables.The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC as EN 50290-2-21 on 2001-03-01.This European Standard supersedes HD 624.1 S1:1994.The following dates were fixed:Annexes designated “normative” are part of the bod
16、y of the standard. In this standard, Annex A is normative.This European Standard has been prepared under the European Mandate M/212 given to CENELEC by the European Commission and the European Free Trade Association. latest date by which the EN has to be implemented at national level by publication
17、of an identical national standard or by endorsement(dop) 2002-04-01 latest date by which the national standards conflicting with the EN have to be withdrawn(dow) 2004-04-01Foreword to amendment A1 This amendment to the European Standard EN 50290-2-21:2001 was prepared by the Technical Committee CENE
18、LEC TC 46X, Communication cables. The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC as amendment A1 to EN 50290-2-21:2001 on 2007-03-01. The following dates were fixed: latest date by which the amendment has to be implemented at national level by publ
19、ication of an identical national standard or by endorsement (dop) 2008-03-01 latest date by which the national standards conflicting with the amendment have to be withdrawn (dow) 2010-03-01 This amendment introduces a new PVC insulation Grade for high temperature. _ _ - 3 - EN 50290-2-21:2001License
20、d Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 10/12/2007 03:17, Uncontrolled Copy, (c) BSI1 ScopeThis part 2-21 of EN 50290 gives specific requirements for PVC insulation compounds used for communication cables.It is to be read in conjunction with part 2-20 of EN 50290.2 Normative referencesThis E
21、uropean Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publicati
22、ons apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments).EN 60811-1-1:1995, Insulating and sheathing materials of electric and optical cables Common test methods
23、Part 1-1: General application Measurement of thickness and overall dimensions Tests for determining the mechanical properties(IEC 60811-1-1:1993).EN 60811-1-2:1995, Insulating and sheathing materials of electric cables Common test methods Part 1-2: General application Thermal ageing methods(IEC 6081
24、1-1-2:1985 + corr. May 1986 + A1:1989).EN 60811-1-3:1995, Insulating and sheathing materials of electric and optical cables Common test methods Part 1-3: General application Methods for determining the density Water absorption tests Shrinkage test(IEC 60811-1-3:1993).EN 60811-1-4:1995, Insulating an
25、d sheathing materials of electric and optical cables Common test methods Part 1-4: General application Tests at low temperature(IEC 60811-1-4:1985 + corr. May 1986 + A1:1993).EN 60811-3-1:1995, Insulating and sheathing materials of electric and optical cables Common test methods Part 3-1: Methods sp
26、ecific to PVC compounds Pressure test at high temperature Tests for resistance to cracking(IEC 60811-3-1:1985 + corr. May 1986).EN 60811-3-2:1995, Insulating and sheathing materials of electric cables Common test methods Part 3: Methods specific to PVC compounds Section 2: Loss of mass test Thermal
27、stability test(IEC 60811-3-2:1985 + corr. May 1986 + A1:1993).ISO 868:1985, Plastics and ebonite Determination of indentation hardness by means of a durometer (Shore hardness).For cables with a maximum rated temperature of 90 C, compound of Grade TI55 shall be used and it shall comply with the requi
28、rements described in Table 1. !“EN 50290-2-21:2001 - 4 -TI55 90/105 a15 150 140 2 14 x 24 15 25 150 25 115 2 14 x 24 1,5 150 2 6 o cracks “Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 10/12/2007 03:17, Uncontrolled Copy, (c) BSI3 RequirementIn case of specific applications, additional perf
29、ormances could be needed. Relevant test methods and requirements shall be included in the detail specification of the cable.If lead free PVC is required, the lead content shall be less than 400 ppm, measured according to EN 50414. Table 1 - PVC insulation compound Characteristics Test method Unit Gr
30、ades TI51 TI52 TI53 TI54 1 Maximum rated temperature at cable for which the compound can be used C 70 70 90 70 2 Density EN 60811-1-3 Clause 8 g/cm To be recorded 3 Hardness ISO 868 Shore A Shore D To be recorded 4 Mechanical characteristics 4.1 4.11 4.12 In state of delivery Tensile strength median
31、, min. Elongation at break median, min. EN 60811-1-1 9.1 MPa % 12,5 125 10 150 15 150 17 125 4.2 After ageing Ageing conditions temperature duration EN 60811-1-2 8.1 C h 80 2 7 x 24 80 2 7 x 24 135 2 14 x 24 80 2 7 x 24 4.21 Tensile strength median, min. variation, max. MPa % 12,5 20 10 20 15 25 17
32、25 4.22 Elongation at break median, min. variation, max. % % 125 20 150 20 150 25 125 25 5 Loss of mass Ageing conditions temperature duration Loss of mass, max. EN 60811-3-2 8.1 C h mg/cm 80 2 7 x 24 2,0 80 2 7 x 24 2,0 115 2 14 x 24 1,5 100 2 7 x 24 2,0 6 Heat shock Test conditions temperature dur
33、ation Result to be obtained EN 60811-3-1 9.1 C h 150 2 1 No cracks 150 2 1 No cracks 150 2 1 No cracks 150 2 1 No cracks N!- 5 - EN 50290-2-21:20017 8 8.1 8.2 9 10 11 12 DaThe mbTest to be percWhen rdWhen rLicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 10/12/2007 03:17, Uncontrolled Copy, (c
34、) BSITable 1 - PVC insulation compound (continued) Characteristics Test method Unit Grades TI51 TI52 TI53 TI54 TI55 Pressure test at high temperature Test conditions temperature duration EN 60811-3-1 8.1 C h 80 2 4 70 2 4 90 2 4 80 2 4 90 2 4 Result to be obtained - depth of indentation median, max.
35、 % 50 50 50 50 50 Behaviour at low temperature Bending test at low temperature Test conditions temperature Result to be obtained EN 60811-1-4 8.1 C 15 2 No cracks 15 2 No cracks 15 2 No cracks 15 2 No cracks 15 2 No cracks Elongation test at low temperature Test conditions temperature Elongation min
36、. EN 60811-1-4 8.3 C % 15 2 20 15 2 20 Volume resistivity, min. - at max. rated temp. at cable - at 20 C Annex A .m .m 10810111081011107101010910121071010Thermal stability bat 200 C, min. EN 60811-3-2 Clause 9 min 240 80 120 Shrinkage c, max. Test conditions temperature duration EN 60811-1-3 Clause
37、10 % C min 4 150 2 15 4 150 2 15 ielectric constant dUnder consideration aximum rated temperature of 90 C may exceed up to 105 C, but with reduced lifetime. formed after ageing (14 x 24 h at 140 C). equired in cable detail specification. equired the dielectric constant shall be measured at 1 kHz. Ty
38、pical values are under consideration. !“EN 50290-2-21:2001 - 6 -Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 10/12/2007 03:17, Uncontrolled Copy, (c) BSIAnnex A (normative) Volume resistivityThis test shall be made on insulated conductor sample.The sample shall be immersed in water previou
39、sly heated to the specified temperature, a length of about 0,25 m at each end of the sample being kept above the water.The length of the samples, the temperature of the water and the duration of immersion are given in the relevant cable specification.A d.c. voltage between 80 V and 500 V shall then
40、be applied between the conductor and the water.The insulation resistance shall be measured 1 min after application of the voltage.The volume resistivity shall be calculated from the measured insulation resistance by the following formula:where = volume resistivity, in 7m;R = measured insulation resi
41、stance, in 7;l = length of the sample, in m;D = outer diameter of the insulation, in mm;d = inner diameter of the insulation, in mm.2lRlogeDd-=blankLicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 10/12/2007 03:17, Uncontrolled Copy, (c) BSIBS EN BSILicensed Copy: Wang Bin, ISO/EXCHANGE CHINA
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