1、 IEC/TR 62482 Edition 1.0 2008-02 TECHNICAL REPORT Electrical installations in ships Electromagnetic compatibility Optimising of cable installations on ships Testing method of routing distance IEC/TR 62482:2008(E) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2008 IEC, Geneva, Switzerland All ri
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9、CAL REPORT Electrical installations in ships Electromagnetic compatibility Optimising of cable installations on ships Testing method of routing distance INTERNATIONAL ELECTROTECHNICAL COMMISSION P ICS 17.220.01; 47.020.60 PRICE CODE ISBN 2-8318-9619-3 2 TR 62482 IEC:2008(E) CONTENTS FOREWORD.3 INTRO
10、DUCTION.5 1 Scope.6 2 Normative references .6 3 Terms and definitions .6 4 Principle.7 4.1 General .7 4.2 Reference ground8 4.3 Signal detector (SD)8 4.4 Susceptible (drain) cable.8 4.5 Interfering (source) cable 8 4.6 Burst generator .8 5 Test set-up.8 5.1 Susceptible interference threshold 8 5.2 C
11、able routing and distances 8 6 Test9 6.1 General .9 6.2 Test performance 10 6.3 Test result.10 Annex A (informative) Test Report: Performance of a routing optimising test .11 Bibliography16 Figure 1 Routing distance and routing height .9 Figure 2 Test set-up 1: Unshielded susceptible cable.9 Figure
12、3 Test set-up 2: Shielded susceptible cable 10 Figure A.1 Test site with reference ground.12 Figure A.2 Burst injection into interfering cable14 Figure A.3 Signal detector (SD) .14 Figure A.4 Signal detector (SD), block diagram15 Table 1 Cable categories .7 Table A.1 Examples for test facilities .11
13、 Table A.2 Measured interference threshold values versus separation, height and type of susceptible cable 13 TR 62482 IEC:2008(E) 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTRICAL INSTALLATIONS IN SHIPS ELECTROMAGNETIC COMPATIBILITY OPTIMISING OF CABLE INSTALLATIONS ON SHIPS TESTING METHOD OF
14、 ROUTING DISTANCE 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 all questions concerning stan
15、dardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparat
16、ion is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non- governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely wit
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22、 IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, 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) At
23、tention 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 the subject of patent rights.
24、 IEC shall not be held responsible for identifying any or all such patent rights. The main task of IEC technical committees is to prepare International Standards. However, a technical committee may propose the publication of a technical report when it has collected data of a different kind from that
25、 which is normally published as an International Standard, for example “state of the art“. IEC 62482/TR, which is a technical report, has been prepared by IEC technical committee 18: Electrical installations of ships and of mobile and fixed offshore units. The text of this technical report is based
26、on the following documents: Enquiry draft Report on voting 18/1030/DTR 18/1041A/RVC Full information on the voting for the approval of this technical report 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,
27、 Part 2. 4 TR 62482 IEC:2008(E) 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 this date, the publication will be r
28、econfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. TR 62482 IEC:2008(E) 5 INTRODUCTION In accordance with IMO-Resolution A.694/6.1: “All reasonable and practicable steps shall be taken to ensure electromagnetic com
29、patibility between the equipment concerned and other radio communication and navigational equipment carried on board in compliance with the relevant requirements of chapters III, IV and V of the SOLAS Convention.” To fulfil this requirement it is necessary to survey the chosen cables and cable insta
30、llation with regard to EMC. Basic rules for cabling in international shipbuilding are presently specified in the series of standards given in IEC 60092 1 1 , requirements on dimensions of routing distances in cable systems are given in IEC 60533 and basic requirements on cable routing in IEC 60092-3
31、52. As the requirements differ between the relevant documents, the question of validity has been discussed internationally. This applies particularly in regard to parallel routing of power electronics cables on the one hand and measuring and control equipment cables on the other hand. General Inform
32、ation about routing distances is mainly based on the German standard VG 95375-3 4. This standard is based on tests performed in 1982 2. In those days tests were performed mainly with sinusoidal signals in the frequency range of 0.1 MHz up to 40 MHz and even today there is no reason to doubt these te
33、st results. However, the question has often been raised whether these results are also adequate for unacceptable crosstalk into cables for integrated digital circuits. In no case fast transients may affect the function inadmissibly where interference thresholds should be a maximum. The measurements
34、were accomplished to investigate this issue. 1Numbers in square brackets refer to the Bibliography. 6 TR 62482 IEC:2008(E) ELECTRICAL INSTALLATIONS IN SHIPS ELECTROMAGNETIC COMPATIBILITY OPTIMISING OF CABLE INSTALLATIONS ON SHIPS TESTING METHOD OF ROUTING DISTANCE 1 Scope This Technical Report descr
35、ibes tests methods carried out to determine minimum routing distances in order to avoid crosstalk of fast transients (bursts). The test results may be applied to cable installations according to IEC 60092-352. 2 Normative references The following referenced documents are indispensable for the applic
36、ation 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. IEC 60092-352, Electrical installations in ships Part 352: Choice and installation of electrical cables IEC 60092-35
37、3, Electrical installations in ships Part 353: Single and multicore non-radial field power cables with extruded solid insulation for rated voltages 1kV and 3 kV IEC 60092-374, Electrical installations in ships Part 374: Shipboard telecommunication cables and radio-frequency cables Telephone cables f
38、or non-essential communication services IEC 60092-375, Electrical installations in ships Part 375: Shipboard telecommunication cables and radio-frequency cables General instrumentation, control and communication cables IEC 60092-376, Electrical installations in ships Part 376: Cables for control and
39、 instrumentation circuits 150/250 V (300 V) IEC 60092-504, Electrical installations in ships Part 504: Special features Control and instrumentation IEC 60533:1999, Electrical and electronic installations in ships Electromagnetic compatibility IEC 61000-4-4, Electromagnetic compatibility (EMC) Part 4
40、-4: Testing and measurement techniques Electrical fast transient/burst immunity test IEC 61196-1, Coaxial communication cables Part 1: Generic specification General, definitions and requirements 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 60533 a
41、nd the following apply. TR 62482 IEC:2008(E) 7 3.1 cable category classification of a cable depending on the purpose or the kind of voltage (power supply, signal transmission) the cable is intended for NOTE Cable categories are shown in IEC 60533:1999, Table C.1 (categories 2 and 4) or in VG 5375-3:
42、2006, Table 2, categories 2 and 5 4. 3.2 routing distance intermediate free space between cables or bundle of cables of different, i. e. interfering and susceptible, cable categories 3.3 routing height distance of cable or bundle of cables from reference ground (earth) 3.4 signal detector (SD) elect
43、ronic equipment used for detection and indication of disturbance 4 Principle 4.1 General Electromagnetic compatibility (EMC) of electrical equipment or installations can be optimised by providing a defined distance between interfering and susceptible cable categories on cable routing. On the other h
44、and the special situation aboard may call for such a distance to be as low as possible. With the test described in this technical report, the sufficient separation distance between cables of different categories can be quantified. Definition numbers of the cable categories used in this technical rep
45、ort are stated in Table 1. Table 1 Cable categories Cable for transmission of Voltage level V Emission/ immunity rating Number of cable category aCable type bApplicable standard Analogue signals (Low frequency): telephone, loudspeaker and similar Digital signals: control, automation, alarm 0,1-115 N
46、ot disturbing / susceptible 2 Twisted; single screened; screened twisted pairs IEC 60092-374, IEC 60092-375, IEC 60092-376 High-power signals, pulsed high-power signals cCoaxial; screened power (Special cable) High powered semi- conductor converter output 10-1 000 Extremely disturbing / non- suscept
47、ible 4 1 kV power cable IEC 60092-353 a In accordance with IEC 60533. b The transfer impedance should be specified and should not exceed 30 m/m at 10 MHz as determined by IEC 61196-1. c Cables for radar, sonar equipment and echo sounders should be double screen cables or coaxial cables inside protec
48、tive piping. 8 TR 62482 IEC:2008(E) 4.2 Reference ground Precondition to correct and reproducible measurement results is the simulation of the properties of the metallic ships structure as reference ground. This can be achieved by use of a metallic ground plane of an extensive area. The minimum area
49、 should be 10 m 10 m. 4.3 Signal detector (SD) The signal detector serves as detecting device by signal processing and displaying the malfunction caused by the disturbance voltage. It is connected with the susceptible cable. Such a detecting device should simulate industrial manufactured digital electrical equipment, e. g. a storage-programmable logic controller, which has been chosen to be used for controlling and a
