1、 IEC TR 61243-6 Edition 1.0 2017-03 TECHNICAL REPORT Live working Voltage detectors Part 6: Guidelines on non-contact voltage detectors (NCVD) for use at nominal voltages above 1 kV AC IEC TR 61243-6:2017-03(en) colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2017 IEC, Geneva, Switze
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10、tomer Service Centre - webstore.iec.ch/csc If you wish to give us your feedback on this publication or need further assistance, please contact the Customer Service Centre: csciec.ch. IEC TR 61243-6 Edition 1.0 2017-03 TECHNICAL REPORT Live working Voltage detectors Part 6: Guidelines on non-contact
11、voltage detectors (NCVD) for use at nominal voltages above 1 kV AC INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 13.260; 29.240.20; 29.260.99 ISBN 978-2-8322-3903-2 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an aut
12、horized distributor. colour inside 2 IEC TR 61243-6:2017 IEC 2017 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope 7 2 Normative references 7 3 Terms and definitions 7 4 The principles of an NCVD 11 4.1 NCVD designed to work at a distance without any contact 11 4.2 NCVD designed to work with reference
13、 points . 13 4.2.1 General . 13 4.2.2 NCVD designed to work with one reference point 14 4.2.3 NCVD designed to work with two reference points . 15 5 Different designs of non-contact voltage detectors . 17 6 Limitations and recommendations of use for each type of NCVD . 19 6.1 Principal limitations .
14、 19 6.2 Recommendations for the selection, calibration and use of NCVD 19 6.2.1 Selection of the appropriate type of NCVD . 19 6.2.2 Calibration of the selected device 20 6.2.3 Use of the selected device . 20 7 Recommended requirements . 21 7.1 General . 21 7.2 Recommended general requirements 21 7.
15、2.1 Safety 21 7.2.2 Indication . 21 7.2.3 Electromagnetic compatibility (EMC) . 21 7.3 Recommended functional requirements 22 7.3.1 Clear indication . 22 7.3.2 Clear perceptibility . 25 7.3.3 Temperature and humidity dependence of the indication 26 7.3.4 Frequency dependence . 26 7.3.5 Response time
16、 . 26 7.3.6 Power source dependability . 26 7.3.7 Testing element . 26 7.3.8 Non response to DC voltage (static electric field) . 27 7.3.9 Immunity to electrostatic discharges 27 7.3.10 Time rating 27 7.4 Electrical requirements . 27 7.4.1 Insulating material . 27 7.4.2 Protection against bridging f
17、or Type 3 only 27 7.4.3 Resistance against sparking 28 7.4.4 Resistive (impedance) element of Type 5 only . 28 7.5 Recommendations for mechanical performance 28 7.5.1 General . 28 7.5.2 Design . 28 7.5.3 Dimensions and construction . 28 IEC TR 61243-6:2017 IEC 2017 3 7.5.4 Degree of protection provi
18、ded by enclosure . 30 7.5.5 Grip force and deflection 30 7.5.6 Vibration drop and shock resistance 31 7.6 Markings . 31 7.7 Instructions for use . 31 Annex A (informative) General considerations about voltage detection 32 A.1 General . 32 A.2 Principles of functioning of voltage detectors 32 A.2.1 B
19、asic analysis 32 A.2.2 Voltage detection with two contact electrodes (bi-polar detectors) . 32 A.2.3 Voltage detection with one contact electrode . 33 A.2.4 Voltage detection without contact electrode . 34 Annex B (informative) Instructions for use 36 Annex C (informative) In-service care 37 C.1 Gen
20、eral . 37 C.2 Maintenance . 37 Annex D (informative) Suitable for live working; double triangle . 38 Bibliography 39 Figure 1 NCVD working at a distance without any contact 12 Figure 2 Effect of the relative position of the non-contact voltage detector . 13 Figure 3 NCVD working at a distance with o
21、ne reference point 14 Figure 4 Non-contact voltage detector with a reference point making contact with the cable insulation covering an insulated conductor 15 Figure 5 Non-contact voltage detector working with two reference points making contact with the cap and pin of an insulator 16 Figure 6 Non-c
22、ontact voltage detector working with two reference points on an underground cable 16 Figure 7 Directional properties of NCVD working at distance 25 Figure 8 Examples of designs of NCVDs 29 Figure A.1 Bi-polar voltage detection principle . 33 Figure A.2 Capacitive unipolar voltage detection principle
23、 34 Table 1 Types of non-contact voltage detector . 18 Table 2 Limitations for use . 19 Table 3 Specific recommendations for use . 20 Table 4 Examples of values of the radius of the cone of detection as a function of the directional properties angle . 24 Table 5 Climatic categories 26 Table 6 Minimu
24、m length of the insulating element or of the insulating stick (L i ) 30 Table C.1 Recommended checking points for in-service care . 37 4 IEC TR 61243-6:2017 IEC 2017 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ LIVE WORKING VOLTAGE DETECTORS Part 6: Guidelines on non-contact voltage detectors (NCVD)
25、for use at nominal voltages above 1 kV AC 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 q
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35、tion. 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. The main task of IEC technical committees is to prepare International Standards. Howe
36、ver, a technical committee may propose the publication of a Technical Report when it has collected data of a different kind from that which is normally published as an International Standard, for example “state of the art“. IEC TR 61243-6, which is a Technical Report, has been prepared by IEC techni
37、cal committee 78: Live working. The text of this Technical Report is based on the following documents: Enquiry draft Report on voting 78/1143/DTR 78/1162A/RVDTR 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.
38、 IEC TR 61243-6:2017 IEC 2017 5 This document has been drafted in accordance with the ISO/IEC Directives, Part 2. Terms defined in Clause 3 are given in italic print throughout this standard. A list of all parts of the IEC 61243 series, published under the general title Live working Voltage detector
39、s, can be found on the IEC website. The committee has decided that the contents of this document will remain unchanged until the stability date indicated on the IEC website under “http:/webstore.iec.ch“ in the data related to the specific document. At this date, the document will be reconfirmed, wit
40、hdrawn, replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. IMPORTANT The colour inside logo on the cover page of this publication indicates that it contains colours which are considered to be useful for the correct understanding of its c
41、ontents. Users should therefore print this document using a colour printer. 6 IEC TR 61243-6:2017 IEC 2017 INTRODUCTION With the aim of ensuring the safety of the users the purpose of a voltage detector is to give a clear indication of the presence or absence of the operating voltage, without any ne
42、ed for interpretation or analytical evaluation by the user. IEC 61243-1, IEC 61243-2 and IEC 61243-3 apply to portable voltage detectors designed to work correctly when they are in direct contact with the bare part of the installation to be tested. At HV and UHV, large distances between the user and
43、 the bare parts to be tested make the handling of a very long insulating element or insulating stick an ergonomic and safety concern. In such situations, it may become convenient to avoid any contact with the bare part to be tested and to perform voltage detection at a distance. This document provid
44、es considerations and performance guidelines for portable “non-contact” voltage detectors and it can be used as a reference for the development of national, industry or manufacturers standard(s) or for the selection of a product by users. This document has been prepared taking into consideration the
45、 provisions given in IEC 61477. IEC TR 61243-6:2017 IEC 2017 7 LIVE WORKING VOLTAGE DETECTORS Part 6: Guidelines on non-contact voltage detectors (NCVD) for use at nominal voltages above 1 kV AC 1 Scope This part of IEC 61243, which is a Technical Report, is applicable to portable non-contact voltag
46、e detectors (NCVD) with built-in power source, to be used to indicate the presence or the absence of the operating voltage on electrical systems for nominal voltages above 1 kV AC and frequencies of 16 2/3 Hz, 50 Hz and/or 60 Hz. NOTE 16,7 Hz is often referenced. This document applies only to device
47、s that are not designed to be used in contact with the bare part of the installation on which the presence or the absence of the operating voltage has to be tested. This document describes only devices, and their behaviour, using electric field and voltage gradient detection principles even if other
48、 principles could be used. It provides performance guidelines, recommendations for use and recommended minimum criteria for selection. Devices like personal safety distance voltage detectors, distance voltage detectors for emergency responders or machine operators are not covered by this document. E
49、xcept when otherwise specified, all the voltages defined in this document refer to phase-to- phase voltages of three-phase systems. In other systems, the applicable phase-to-phase or phase-to-earth (ground) voltages are used to determine the operating voltage. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited a
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