1、 IEC 61196-6 Edition 1.0 2009-01 INTERNATIONAL STANDARD Coaxial communication cables Part 6: Sectional specification for CATV drop cables IEC 61196-6:2009(E) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2009 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of th
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8、 you wish to give us your feedback on this publication or need further assistance, please visit the Customer Service Centre FAQ or contact us: Email: csciec.ch Tel.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 61196-6 Edition 1.0 2009-01 INTERNATIONAL STANDARD Coaxial communication cables Part 6: Sec
9、tional specification for CATV drop cables INTERNATIONAL ELECTROTECHNICAL COMMISSION L ICS 33.120.10 PRICE CODE ISBN 2-8318-1021-4 Registered trademark of the International Electrotechnical Commission 2 61196-6 IEC:2009(E) INTERNATIONAL ELECTROTECHNICAL COMMISSION _ COAXIAL COMMUNICATION CABLES Part
10、6: Sectional specification for CATV drop cables FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on
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19、 other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be
20、 the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 61196-6 has been prepared by subcommittee 46A: Coaxial cables, of IEC technical committee 46: Cables, wires, waveguides, R.F. connectors, R.F. and microwave pass
21、ive components and accessories. The text of this standard is based on the following documents: FDIS Report on voting 46A/917/FDIS 46A/926/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This standard is to be rea
22、d in conjunction with IEC 61196-1. It is based on the second edition of that standard. A list of all parts of IEC 61196 series, published under the general title Coaxial communication cables, can be found on the IEC website. 61196-6 IEC:2009(E) 3 The committee has decided that the contents of this p
23、ublication will remain unchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed; withdrawn; replaced by a revised edition, or amended. A bilingual version
24、 of this publication may be issued at a later date. 4 61196-6 IEC:2009(E) COAXIAL COMMUNICATION CABLES Part 6: Sectional specification for CATV drop cables 1 Scope This part of IEC 61196 applies to coaxial communications cables. It specifies the requirements for CATV drop cables for use in cabled te
25、levision distribution networks operating at temperature between 40 C and +70 C and in the frequency range from 5 MHz to 1 000 MHz or from 5 MHz to 3 000 MHz. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only t
26、he edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60068-1:1988, Environmental testing Part 1: General and guidance IEC 61196-1:2005, Coaxial communication cables Part 1: Generic specification General, definitions a
27、nd requirements IEC 61196-1-1:2007,Coaxial communication cables Part 1-1: Capability approval for coaxial cables IEC 61196-1-100 (all parts), Coaxial communication cables Part 1-1XX: Electrical test methods IEC 61196-1-200 (all parts), Coaxial communication cables Part 1-2XX: Environmental test meth
28、ods IEC 61196-1-300 (all parts), Coaxial communication cables Part 1-3XX: Mechanical test methods IEC 62153 (all parts), Metallic communication cable test methods IEC 62230, Electric cables Spark-test method 3 Terms and definitions For the purposes of this document, the terms and definitions given i
29、n IEC 61196-1 apply. 4 Materials and cable construction 4.1 Cable construction The cable construction shall be in accordance with 4.2 to 4.6 of this standard and the requirements stated in the relevant detail specification. 61196-6 IEC:2009(E) 5 4.2 Inner conductor 4.2.1 Conductor material Subclause
30、 4.4.1 of 61196-1 applies. The conductor material shall be stated in the relevant detail specification. 4.2.2 Conductor construction The conductor shall consist of a single wire or tube. Subclause 4.4 of IEC 61196-1 applies. The nominal diameter of the inner conductor and tolerance shall be stated i
31、n the relevant detail specification. The maximum allowable tolerance is 0,03 mm. 4.3 Dielectric Subclause 4.5 of IEC 61196-1 applies. The type, nominal diameter and tolerance along with the ovality and eccentricity of the dielectric shall be stated in the relevant detail specification. The maximum a
32、llowable tolerance of the diameter is 0.15 mm. The maximum allowable values for ovalityand eccentricity are given in 7.3, Table 4 of this standard. Note: If the tape of the outer conductor is bonded to the dielectric the measurement shall be made over this tape. 4.4 Outer conductor or screen The con
33、struction and material of the outer conductor or screen shall be as stated in the relevant detail specification. The construction shall be in accordance with 4.6 f) or 4.6 g) of IEC 61196-1. The nominal diameter of the outer conductor or screen shall be stated in the relevant detail specification. T
34、he maximum allowable tolerance of the diameter is 0.20 mm. 4.5 Sheath Subclause 4.7 of IEC 61196-1, as amended by the following, applies: Cables without an outer sheath shall not be subject to 4.5 of this standard. The outer sheath of the cable shall be a thermoplastic material as specified in the r
35、elevant detail specification. The nominal sheath thickness shall be stated in the relevant detail specification. The nominal diameter of the sheath shall be stated in the relevant detail specification. The maximum allowable tolerance of the diameter is 0.25 mm. The maximum allowable values for ovali
36、tyand eccentricity are given in 7.3, Table 4 of this standard. 6 61196-6 IEC:2009(E) For aerial cables or cables intended for outdoor applications utilising a black polyethylene sheath, the carbon black content shall be as stated in Table 4. For other sheath material and colours of cables for outdoo
37、r use, the cable shall pass the UV stability test. (A relevant test procedure is under consideration). The messenger type shall be specified in the relevant detail specification and shall include as a minimum the following criteria: type and material, tensile strength, corrosion properties and elong
38、ation. 4.6 Completed cable The overall nominal completed cable dimensions shall be stated in the detail specification. 5 Standard ratings and characteristics The ratings and characteristics applicable to each cable shall be specified herein or in the relevant detail specification. 6 Identification a
39、nd marking 6.1 Cable identification Subclause 6.1 of IEC 61196-1 applies. 6.1.1 Cable marking The cable marking shall be applied to the sheath or jacket, or to the outer conductor when a sheath or jacket is not present. The marking shall consist of the IEC cable type number as given in 6.2 of IEC 61
40、196-1 and/or the manufacturers designated markings when specified in the relevant cable specification. 6.1.2 Labelling Labelling shall be provided in accordance with 6.3 of IEC 61196-1 and the relevant detail specification. 7 Tests for completed cables When tested in accordance with the IEC 61196-1
41、series, the requirements given below shall apply. Unless otherwise specified, all measurements shall be carried out under standard atmospheric conditions for testing in accordance with Clause 5 of IEC 60068-1. Applicable test methods shall be in accordance with the IEC 61196-1-100, IEC 61196-1-200,
42、IEC 61196-1-300 and IEC 61196-1-400 series and the IEC 62153 series. The operational frequency range of the cable shall be specified in the relevant detail specification as either 5 MHz to 1 000 MHz or 5 MHz to 3 000 MHz and tested accordingly. 61196-6 IEC:2009(E) 7 7.1 Electrical testing of the fin
43、ished cable 7.1.1 Low-frequency and d.c. electrical measurements Table 1 Low-frequency and d.c. electrical measurements No. IEC test procedure Parameter Requirements/remarks 7.1.1.1 61196-1-101 Conductor resistance Applicable, value in accordance with the detail specification 7.1.1.2 61196-1-102 Ins
44、ulation resistance 10 4M km 7.1.1.3 61196-1-105 Withstand voltage of dielectric 2 kV d.c. or 1,5 kV a.c. for 1 min, unless otherwise specified in the relevant detail specification 7.1.1.4 61196-1-106 Withstand voltage of sheath 3,5 kV d.c. or 2,5 kV a.c., unless otherwise specified in the relevant d
45、etail specification 7.1.1.5 60096-0-1* Current carrying capacity May be specified for information purposes in the relevant detail specification. 7.1.1.6 IEC 62230 Spark test 2,5 kV a.c, or 3,75 kV d.c., or pulse , or 3,5 kV h.f * IEC 60096-0-1 is under consideration. 7.1.2 High-frequency electrical
46、and transmission measurements Table 2 High-frequency electrical and transmission measurements No. IEC test procedure Parameter Requirements/remarks 7.1.2.1 61196-1-108 Characteristic impedance 75 3 7.1.2.2 61196-1-108 Relative propagation velocity (velocity ratio) May be specified for information pu
47、rposes only in the detail specification 7.1.2.3 61196-1-112 Return loss RL: 20 dB from 5 MHz to 1 000 MHz; 18 dB from 1 000 MHz to 2 000 MHz; 16 dB from 2 000 MHz to 3 000 MHz The measurement inaccuracy .a r,f shall be 1 dB 7.1.2.4 61196-1-113 Attenuation constant The cable shall comply at any frequ
48、ency with the formula c f b f a + + . In case of copper clad conductor material, a term f d / should be added, to match the curve at low frequencies. The coefficients a, b, c and d shall be given in the relevant detail specification as well as the discrete values at 200 MHz and 800 MHz 7.1.2.5 61196
49、-1-115 Regularity of impedance Perform on both ends of tested cable Regularity 40 dB resp 1 % Test procedure: IEC 61196-1-115, (time domain) or IEC 62153-1-1, (transformation from frequency domain into time domain by IDFT) 7.1.2.6 62153-4-3 Transfer impedance aScreening Class A+: 2,5 m/m from 5 MHz - 30 MHz Screening Class A: 5 m/m from 5 MHz - 30 MHz Screening Class B: 15 m/m from 5 MHz - 30 MHz Screening Class C: b 50 m /m 5 from MHz - 30 MHz T
