1、 INTERNATIONAL STANDARD IEC 60189-2Fourth edition 2007-05Low-frequency cables and wires with PVC insulation and PVC sheath Part 2: Cables in pairs, triples, quads and quintuples for inside installations Reference number IEC 60189-2:2007(E) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2007 IEC,
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8、IONAL STANDARD IEC 60189-2Fourth edition 2007-05Low-frequency cables and wires with PVC insulation and PVC sheath Part 2: Cables in pairs, triples, quads and quintuples for inside installations S For price, see current catalogue PRICE CODE Commission Electrotechnique Internationale International Ele
9、ctrotechnical Commission 2 60189-2 IEC:2007(E) CONTENTS FOREWORD.4 1 Scope.6 2 Normative references .6 3 Terms and definitions .6 4 Cable construction and dimensions 6 4.1 Conductor .6 4.1.1 Conductor material 6 4.1.2 Type of conductor7 4.1.3 Conductor finish 7 4.1.4 Conductor dimensions .7 4.1.5 Co
10、ntinuity of conductor7 4.2 Insulation 7 4.2.1 Insulation material .7 4.2.2 Insulation thickness .7 4.2.3 Application of the insulation.7 4.2.4 Colour of insulation7 4.3 Cabling element 8 4.4 Binding of elements.9 4.5 Assembling of elements 9 4.5.1 Concentric layer cables .9 4.5.2 Unit cables 10 4.6
11、Sequence of elements.10 4.6.1 Concentric layer cables .10 4.6.2 Unit cables 10 4.7 Total number of elements10 4.8 Identification of the cabling elements and of the insulated conductors .10 4.9 Sequence and identification of the units 11 4.10 Wrapping.11 4.11 Screening11 4.12 Rip cord 12 4.13 Sheath
12、12 4.13.1 Sheath material .12 4.13.2 Sheath thickness .12 4.13.3 Application of the sheath .12 4.13.4 Colour of sheath12 4.14 Finished cable.12 4.14.1 Diameter of cable over sheath .12 4.14.2 Sealing of ends12 4.15 Delivery.12 5 Mechanical requirements13 5.1 Conductor .13 5.2 Insulation 13 5.3 Sheat
13、h 14 6 Thermal stability and climatic requirements 14 6.1 Insulation 14 60189-2 IEC:2007(E) 3 6.1.1 Measurement of insulation shrinkage after overheating of conductor .14 6.1.2 Cold bend test .14 6.1.3 Heat shock test14 6.2 Sheath 14 6.2.1 Pressure test .14 6.2.2 Cold bend test .14 6.2.3 Heat shock
14、test14 6.3 Resistance to flame propagation .14 7 Electrical requirements.15 7.1 Electrical resistance of conductor15 7.2 Dielectric strength .15 7.3 Insulation resistance .15 7.4 Mutual capacitance .15 7.5 Capacitance unbalance .15 Annex A (normative) Colour code .16 Annex B (normative) Unit identif
15、ication .18 Annex C (normative) Electrical requirements of insulated conductors19 Annex D (normative) Cables in pairs, triples, quads, and quintuples for inside installations (with screening).20 Annex E (normative) Cables in pairs for digital exchanges (with screening) 21 Figure 1 Cabling elements .
16、9 4 60189-2 IEC:2007(E) INTERNATIONAL ELECTROTECHNICAL COMMISSION _ LOW-FREQUENCY CABLES AND WIRES WITH PVC INSULATION AND PVC SHEATH Part 2: Cables in pairs, triples, quads and quintuples for inside installations FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organiz
17、ation for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IE
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19、h may participate in this preparatory work. International, governmental and non- governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by a
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23、corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have
24、the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoev
25、er, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publicatio
26、ns 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 the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard
27、 IEC 60189-2 has been prepared by subcommittee 46C: Wires and symmetrical cables, of IEC technical committee 46: Cables, wires, waveguides, r.f. connectors, r.f. and microwave passive components and accessories. This fourth edition cancels and replaces the third edition published in 1981, amendment
28、1 (1989) and amendment 2 (1996). This edition constitutes a technical revision. This edition includes an update of the technical characteristics. 60189-2 IEC:2007(E) 5 The text of this standard is based on the following documents: FDIS Report on voting 46C/821/FDIS 46C829/RVD Full information on the
29、 voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The list of all the parts of the IEC 60189 series, under the general title Low-frequency cables and wires
30、with PVC insulation and PVC sheath, can be found on the IEC website. The committee has decided that the contents of this publication 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
31、 this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. 6 60189-2 IEC:2007(E) LOW-FREQUENCY CABLES AND WIRES WITH PVC INSULATION AND PVC SHEATH Part 2: Cables in pairs, triples, quad
32、s and quintuples for inside installations 1 Scope This part of IEC 60189 is applicable to cables for inside installations, intended for the interconnection of the following: transmission equipment; telecommunications equipment; equipment for data processing. NOTE It is the responsibility of the manu
33、facturer to establish quality assurance by quality control procedures which will ensure that the product will meet the requirements of this standard. It is not intended that a complete testing programme must be carried out on every length of conductor and cable. When the purchaser wishes to specify
34、acceptance tests or other quality procedures, it is essential that agreement be reached between the purchaser and the manufacturer by the time of ordering. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the
35、 edition cited applies. For undated references, the latest edition of the referenced document ( including any amendments ) applies. IEC 60028, International standard of resistance for copper IEC 60189-1:2007, Low-frequency cables and wires with PVC insulation and PVC sheath Part 1: General test and
36、measuring methods IEC 60304, Standard colours for insulation for low-frequency cables and wires IEC 60332-3 (all parts):Tests on electric cables under fire conditions Part 3: Test for vertical flame spread IEC 60344, Calculation method of resistance of plain and coated copper conductors of low- freq
37、uency cables and wires Application guide 3 Terms and definitions For the purposes of this document, the terms and definitions are given in IEC 60189-1 apply. 4 Cable construction and dimensions 4.1 Conductor 4.1.1 Conductor material The conductor shall consist of annealed copper, uniform in quality
38、and free from defects. The properties of the copper shall be in accordance with IEC 60028. 60189-2 IEC:2007(E) 7 4.1.2 Type of conductor The conductor shall consist of a single strand, circular in section. 4.1.3 Conductor finish The conductor may be either plain or tinned. 4.1.4 Conductor dimensions
39、 The conductor is designated by its nominal diameter. Dimensions are given in Annex C. 4.1.5 Continuity of conductor Normally the conductor shall be drawn in one piece. In cases of necessity, joints in the conductor are permitted provided that the breaking strength of a joint is not less than 85 % o
40、f the breaking strength of the unjointed conductor. 4.2 Insulation 4.2.1 Insulation material The insulation shall consist of polyvinyl chloride (PVC). NOTE The term “polyvinyl chloride” denotes a plasticized compound of polyvinyl chloride or vinylchloride vinylacetate copolymers. 4.2.2 Insulation th
41、ickness The insulation shall be continuous having a thickness as uniform as possible, not less than 0,15 mm for a nominal conductor diameter up to and including 0,6 mm, and not less than 0,25 mm for a nominal conductor diameter of 0,8 mm. The minimum thickness of the insulation shall be measured in
42、accordance with the method specified in 5.2.1.1 of IEC 60189-1. 4.2.3 Application of the insulation The insulation shall be applied to fit closely to the conductor without adhering to it. The stripping properties of the insulation shall be checked in accordance with the method specified in 6.4.2 of
43、IEC 60189-1. It shall be possible to strip the insulation from the conductor easily and without damage to the insulation, to the conductor, or to the tinning, if any. 4.2.4 Colour of insulation The insulated conductors shall be coloured by one colour or by two different colours. Colours shall corres
44、pond reasonably with the standard colours shown in IEC 60304. When two colours are used, the following conditions shall be fulfilled: markings shall be rings or helices: if helices, single helices are preferred, double helices however are allowed; markings may be made by helical bicolour extrusion;
45、8 60189-2 IEC:2007(E) markings printed or painted on the insulation shall adhere satisfactorily; markings shall be easily identifiable within any 15 mm length of the insulated conductor; the distance of repetition of the markings shall be not less than 4 mm, measured from centre to centre parallel t
46、o the axis; the width of the rings or helices and the width of their spacing measured parallel to the axis, shall be approximately constant and shall be not less than 1,5 mm; the width of the rings or helices need not be the same as that of the spacing. NOTE For wires identified by ring marking, nei
47、ther the registration of the two half-bands nor the complete encirclement of the wire is critical. 4.3 Cabling element A cabling element (Figure 1) shall be a pair of two insulated conductors twisted together and designated wire a and wire b respectively, or a triple of three insulated conductors tw
48、isted together and designated wire a, wire b and wire c respectively, or a quad (star quad) of four insulated conductors twisted together and designated wire a, wire b, wire c and wire d respectively, or a quintuple of five insulated conductors made up in one of the following ways: a) five insulated
49、 conductors, twisted together and designated wire a, wire b, wire c, wire d and wire e; b) four insulated conductors, twisted together and designated wire a, wire b, wire c and wire d and one designated wire e not twisted; c) two insulated conductors, twisted together and designated wire a and wire b, combined with two insulated conductors, twisted together and designated wire c and wire d, and one wire designated e. The m
