BS EN 50289-1-2-2001 Communication cables - Specifications for test methods - Electrical test methods - DC resistance - d c resistance《通信电缆 试验方法规范 电气试验方法 直流电阻》.pdf

上传人:cleanass300 文档编号:574722 上传时间:2018-12-13 格式:PDF 页数:10 大小:160.54KB
下载 相关 举报
BS EN 50289-1-2-2001 Communication cables - Specifications for test methods - Electrical test methods - DC resistance - d c resistance《通信电缆 试验方法规范 电气试验方法 直流电阻》.pdf_第1页
第1页 / 共10页
BS EN 50289-1-2-2001 Communication cables - Specifications for test methods - Electrical test methods - DC resistance - d c resistance《通信电缆 试验方法规范 电气试验方法 直流电阻》.pdf_第2页
第2页 / 共10页
BS EN 50289-1-2-2001 Communication cables - Specifications for test methods - Electrical test methods - DC resistance - d c resistance《通信电缆 试验方法规范 电气试验方法 直流电阻》.pdf_第3页
第3页 / 共10页
BS EN 50289-1-2-2001 Communication cables - Specifications for test methods - Electrical test methods - DC resistance - d c resistance《通信电缆 试验方法规范 电气试验方法 直流电阻》.pdf_第4页
第4页 / 共10页
BS EN 50289-1-2-2001 Communication cables - Specifications for test methods - Electrical test methods - DC resistance - d c resistance《通信电缆 试验方法规范 电气试验方法 直流电阻》.pdf_第5页
第5页 / 共10页
亲,该文档总共10页,到这儿已超出免费预览范围,如果喜欢就下载吧!
资源描述

1、BRITISH STANDARD BS EN 50289-1-2:2001 Communication cables Specifications for test methods Part 1-2: Electrical test methods DC resistance The European Standard EN 50289-1-2:2001 has the status of a British Standard ICS 33.120.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW

2、BS EN 50289-1-2:2001 This British Standard, having been prepared under the direction of the Electrotechnical Sector Committee title, was published under the authority of the Standards Committee and comes into effect on 15 August 2001 BSI 07-2001 ISBN 0 580 38036 X National foreword This British Stan

3、dard is the official English language version of EN 50289-1-2:2001. The UK participation in its preparation was entrusted by Technical Committee EPL/46, Cables, wire and waveguides, RF connectors, and accessories for communication and signalling, to Subcommittee EPL/46/1, Communication cables, 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 Standards Catalogue und

5、er the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct a

6、pplication. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor rela

7、ted 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 6, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the docum

8、ent was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 50289-1-2 NORME EUROPENNE EUROPISCHE NORM May 2001 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnis

9、che Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2001 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50289-1-2:2001 E ICS 33.120.20 English version Communication cables - Specifications for test methods Part

10、 1-2: Electrical test methods - DC resistance Cbles de communication - Spcifications des mthodes dessai Partie 1-2: Mthodes dessais lectriques - Rsistance continue Kommunikationskabel - Spezifikation fr Prfverfahren Teil 1-2: Elektrische Prfverfahren - Gleichstromwiderstand This European Standard wa

11、s approved by CENELEC on 2000-12-01. 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 references concerning suc

12、h 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 CENELEC member into its own l

13、anguage 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, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portuga

14、l, Spain, Sweden, Switzerland and United Kingdom.EN 50289-1-2:2001 2 Foreword This European Standard was prepared by SC 46XC, Multicore, Multipair and Quad Data communication cables, of Technical Committee CENELEC TC 46X, Communication cables. The text of the draft was submitted to the formal vote a

15、nd was approved by CENELEC as EN 50289-1-2 on 2000-12-01. The following dates were fixed: - latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2002-01-01 - latest date by which the national standards conflictin

16、g with the EN have to be withdrawn (dow) 2004-01-01 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. _ 3 EN 50289-1-2:2001 Contents Foreword . 2 1 Scope 4 2 Normative references 4 3 Definiti

17、ons . 4 4 Test method. 4 4.1 Equipment .4 4.2 Test sample .5 4.3 Procedure 5 5 Expression of test results 5 5.1 Expression.5 5.2 Temperature correction.6 6 Test report . 6EN 50289-1-2:2001 4 1 Scope This Part 1-2 of EN 50289 details the test methods to determine the DC resistance characteristics of

18、the conductors of cables used in analogue and digital communication systems. These characteristics are described by the conductor resistance, loop resistance and resistance unbalance. It is to be read in conjunction with Part 1-1 of EN 50289, which contains essential provisions for its application.

19、2 Normative references This European 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 revisi

20、ons of any of these publications 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 50289-1-1 2001 Communication cables Specifications for tests methods Par

21、t 1-1: Electrical test methods General requirements EN 50290-1-2 1) Communication cables - Part 1-2: Definitions 3 Definitions For the purposes of this European Standard the definitions of EN 50290-1-2 apply in addition to the following ones. 3.1 resistance the resistance describes the electrical DC

22、 resistance of a conductor or a screen. In a finished twisted pair additional resistance due to the twisting of the conductors is included 3.2 loop resistance the loop resistance specifies the electrical DC resistance of the two conductors including the additional resistance caused by the twisting o

23、f any 3.3 resistance unbalance the resistance unbalance R ub , in percent, is the difference value of two symmetrically applied conductors 4 Test method 4.1 Equipment The resistance shall be measured by means of equipment capable of measuring accurately to within 0,5 % of the values to be determined

24、.1)At draft stage 5 EN 50289-1-2:2001 4.2 Test sample The length of the cable under test (CUT) shall be known to within an accuracy better than 1 %. Both ends of the CUT shall be prepared, such that the current flows through all elements of the circuit under test and that the contact resistance can

25、be neglected with respect to the result. 4.3 Procedure For the evaluation of the conductor resistance and the resistance unbalance both ends of the test sample shall be connected to the terminals of the measuring device. To determine the value of the loop resistance, each pair/side of a quad or inne

26、r/outer conductor shall be measured from one end, with the other end short-circuited. Alternatively the loop resistance can be determined by the addition of the two individual conductor values. The current density shall not exceed 1 A/mm of conductor to avoid any significant increase of temperature

27、during the test. The ambient temperature shall be recorded. 5 Expression of test results 5.1 Expression The test results should be normalized to the reference length N. N L R R m = ( /N) (1) where R = resistance of reference length at measuring temperature; R m = measured resistance value of the CUT

28、 in ; L = length of sample in m; N= reference length in m. The resistance unbalance between conductors of pair or in the same side of a quad is % 100 R R R - R R min max min max ub + = (2) where R ub = resistance unbalance; R max = resistance in ohms () for the conductor with the higher resistance v

29、alue; R min = resistance in ohms () for the conductor with the lower resistance value.EN 50289-1-2:2001 6 5.2 Temperature correction The measured value, shall be corrected to the standard temperature of 20 C. For copper conductors the resistance shall be corrected to the standard temperature by mult

30、iplying the measured value by the factor k: () 20 - T 00393 , 0 1 1 k + = (3) where T= temperature in degrees Celsius of the CUT during the measurement. For other conductor materials factor k shall be indicated in the relevant cable specification. 6 Test report The test report shall give the test co

31、nditions: - temperature, - sample length, and record the corrected values for the reference length - conductor(s) resistance, - loop resistance, - resistance unbalance, as required in the relevant cable specification.blankBS EN 50289-1-2:2001 BSI 389 Chiswick High Road London W4 4AL BSI British Stan

32、dards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British S

33、tandards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the tech

34、nical committee responsible, the identity of which can be found on the inside front cover. Tel: 020 8996 9000. Fax: 020 8996 7400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Ord

35、ers for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel: 020 8996 9001. Fax: 020 8996 7001. Standards are also available from the BSI website at http:/www.bsi-. In response to orders for international standards, it is BSI policy to supply the B

36、SI implementation of those that have been published as British Standards, unless otherwise requested. Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI elect

37、ronic information services are also available which give details on all its products and services. Contact the Information Centre. Tel: 020 8996 7111. Fax: 020 8996 7048. Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase pric

38、e of standards. For details of these and other benefits contact Membership Administration. Tel: 020 8996 7002. Fax: 020 8996 7001. Further information about BSI is available on the BSI website at http:/www.bsi-. Copyright Copyright subsists in all BSI publications. BSI also holds the copyright, in t

39、he UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without

40、 prior written permission from BSI. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. If permission is granted, the terms may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager. Tel: 020 8996 7070.

展开阅读全文
相关资源
  • BS ISO IEC 29150-2011 Information technology Security techniques Signcryption《信息技术 安全技术 签密》.pdfBS ISO IEC 29150-2011 Information technology Security techniques Signcryption《信息技术 安全技术 签密》.pdf
  • BS ISO IEC 15408-1-2009 Information technology - Security techniques - Evaluation criteria for IT Security - Introduction and general model《信息技术 安全技术 IT安全评价准则 一.pdfBS ISO IEC 15408-1-2009 Information technology - Security techniques - Evaluation criteria for IT Security - Introduction and general model《信息技术 安全技术 IT安全评价准则 一.pdf
  • BS ISO 7295-1988+A1-2014 Tyre valves for aircraft Interchangeability dimensions《飞机轮胎汽门嘴 互换性尺寸》.pdfBS ISO 7295-1988+A1-2014 Tyre valves for aircraft Interchangeability dimensions《飞机轮胎汽门嘴 互换性尺寸》.pdf
  • BS ISO 15118-1-2013 Road vehicles Vehicle to grid communication interface General information and use-case definition《道路车辆 车辆到电力通讯接口 通用信息和使用案例定义》.pdfBS ISO 15118-1-2013 Road vehicles Vehicle to grid communication interface General information and use-case definition《道路车辆 车辆到电力通讯接口 通用信息和使用案例定义》.pdf
  • BS ISO 13765-2-2004 Refractory mortars - Determination of consistency using the reciprocating flow table method《耐熔灰浆 使用往复流动表法测定一致性》.pdfBS ISO 13765-2-2004 Refractory mortars - Determination of consistency using the reciprocating flow table method《耐熔灰浆 使用往复流动表法测定一致性》.pdf
  • BS ISO 10998-2008+A1-2014 Agricultural tractors Requirements for steering《农业拖拉机 操纵要求》.pdfBS ISO 10998-2008+A1-2014 Agricultural tractors Requirements for steering《农业拖拉机 操纵要求》.pdf
  • BS Z 9-1998 Space data and information transfer systems - Advanced orbiting systems - Networks and data links - Architectural specification《空间数据和信息传输系统 高级轨道系统 网络和数据链接 结构规范》.pdfBS Z 9-1998 Space data and information transfer systems - Advanced orbiting systems - Networks and data links - Architectural specification《空间数据和信息传输系统 高级轨道系统 网络和数据链接 结构规范》.pdf
  • BS Z 7-1998 Space data and information transfer systems - ASCII encoded English《空间数据和信息传输系统 ASCII 编码英语》.pdfBS Z 7-1998 Space data and information transfer systems - ASCII encoded English《空间数据和信息传输系统 ASCII 编码英语》.pdf
  • BS Z 5-1997 Space data and information transfer systems - Standard formatted data units - Control authority procedures《航天数据和信息发送系统 标准格式数据单元 控制授权程序》.pdfBS Z 5-1997 Space data and information transfer systems - Standard formatted data units - Control authority procedures《航天数据和信息发送系统 标准格式数据单元 控制授权程序》.pdf
  • BS Z 4-1997 Space data and information transfer systems - Standard formatted data units - Structure and construction rules《航天数据和信息传输系统 标准格式数据单元 结构和构造规则》.pdfBS Z 4-1997 Space data and information transfer systems - Standard formatted data units - Structure and construction rules《航天数据和信息传输系统 标准格式数据单元 结构和构造规则》.pdf
  • 猜你喜欢
    相关搜索

    当前位置:首页 > 标准规范 > 国际标准 > BS

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1