1、 IEC 60851-5Edition 4.0 2008-07INTERNATIONAL STANDARD NORME INTERNATIONALEWinding wires Test methods Part 5: Electrical properties Fils de bobinage Mthodes dessai Partie 5: Proprits lectriques IEC60851-5:2008 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2008 IEC, Geneva, Switzerland All rights
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16、51-5Edition 4.0 2008-07INTERNATIONAL STANDARD NORME INTERNATIONALEWinding wires Test methods Part 5: Electrical properties Fils de bobinage Mthodes dessai Partie 5: Proprits lectriques INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE UICS 29.060.10 PRICE CODECODE
17、PRIXISBN 2-8318-9937-0 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale 2 60851-5 IEC:2008 CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope.7 2 Normative references .7 3 Test 5: Electrical resistance7 4 Test 13: Breakdown v
18、oltage .8 4.1 Principle8 4.2 Equipment.8 4.3 Enamelled round wire with a nominal conductor diameter up to and including 0,100 mm 9 4.4 Enamelled round wire with a nominal conductor diameter over 0,100 mm up to and including 2,500 mm.10 4.4.1 Test at room temperature 10 4.4.2 Test at elevated tempera
19、ture .11 4.5 Round wire with a nominal conductor diameter over 2,500 mm12 4.5.1 Test at room temperature 12 4.5.2 Test at elevated temperature .14 4.6 Fibre wound round wire .14 4.6.1 Test at room temperature 14 4.6.2 Test at elevated temperature .16 4.7 Rectangular wire .16 4.7.1 Test at room tempe
20、rature 16 4.7.2 Test at elevated temperature .16 5 Test 14: Continuity of insulation (applicable to enamelled round and tape wrapped round wire) .17 5.1 General .17 5.2 Low-voltage continuity (nominal conductor diameter up to and including 0,050 mm).17 5.3 High-voltage continuity (nominal conductor
21、diameter over 0,050 mm up to and including 1,600 mm) .17 5.3.1 Principle 17 5.3.2 Equipment .18 5.3.3 Procedure21 5.3.4 Result22 6 Test 19: Dielectric dissipation factor (applicable to enamelled wire and bunched wire).22 6.1 Principle22 6.2 Equipment.22 6.3 Specimen 23 6.3.1 Specimen for a metal bat
22、h electrode23 6.3.2 Specimen for a conductive suspension electrode.23 6.4 Procedure .24 6.5 Result .24 7 Test 23: Pin hole test24 Annex A (informative) Dissipation factor methods 25 Figure 1 Arrangement of cylinder and specimen for the breakdown voltage test.10 60851-5 IEC:2008 3 Figure 2 Device for
23、 twisting the specimen for breakdown voltage test 11 Figure 3 U-bend specimen for the breakdown voltage test (specimen placed in shot bath).13 Figure 4 Coil-wound specimen for the breakdown voltage test .15 Figure 5 Apparatus for testing the low-voltage continuity of covering .17 Figure 6 High-volta
24、ge d.c. continuity Pulleys for wire size 0,050 mm to 0,250 mm 19 Figure 7 Pulley dimensions and spacing for wire size 0,250 mm to 1,600 mm 19 Figure 8a Graphite fibre single brush electrode assembly 20 Figure 8b Graphite fibre dual brush electrode assembly.21 Figure 8 Graphite fibre single or dual b
25、rush electrode asssembly.21 Figure 9 Suitable electrode arrangement for testing the dielectric dissipation factor.23 Figure A.1 Example of linear method for sole coating.27 Figure A.2 Example of logarithmic method for sole coating 27 Table 1 Rates of test voltage increase .8 Table 2 Loads applied to
26、 the wire 9 Table 3 Loads applied to the wire and number of twists .11 Table 4 Fault currents18 Table 5 Test voltages.22 4 60851-5 IEC:2008 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ WINDING WIRES TEST METHODS Part 5: Electrical properties FOREWORD 1) The International Electrotechnical Commission (
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35、age 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) Attention is drawn to the Normative references cited in this publication. Use of
36、 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. IEC shall not be held responsible for identifying any or all such patent righ
37、ts. International Standard IEC 60851-5 has been prepared by IEC technical committee 55: Winding wires. This fourth edition cancels and replaces the third edition (1996) and its amendments 1 (1997) and 2 (2004). It constitutes a technical revision. Significant revisions to the previous edition includ
38、e the following points: in Subclause 5.3, the addition of the use of carbon brush electrodes for the counting discontinuities during the high voltage continuity test, as an alternative to the V-groove pulley electrode; clarifications in the breakdown voltage test for round wires larger than 2,500 mm
39、 and for fibrous covered wires. 60851-5 IEC:2008 5 The text of this standard is based on the following documents: FDIS Report on voting 55/1069/FDIS 55/1078/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 pu
40、blication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all the parts in the IEC 60851 series, under the general title Winding wires Test methods, can be found on the website. The committee has decided that the contents of this publication will remain unchanged until
41、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. 6 60851-5 IEC:2008 INTRODUCTION This part of IEC 60851 for
42、ms an element of a series of standards which deals with insulated wires used for windings in electrical equipment. The series has three groups describing a) winding wires Test methods (IEC 60851); b) specifications for particular types of winding wires (IEC 60317); c) packaging of winding wires (IEC
43、 60264). 60851-5 IEC:2008 7 WINDING WIRES TEST METHODS Part 5: Electrical properties 1 Scope This part of IEC 60851 specifies the following tests: Test 5: Electrical resistance; Test 13: Breakdown voltage; Test 14: Continuity of insulation; Test 19: Dielectric dissipation factor; Test 23: Pin hole.
44、For definitions, general notes on methods of test and the complete series of methods of test for winding wires, see IEC 60851-1. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For
45、 undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60851-1, Winding wires Test methods Part 1: General 3 Test 5: Electrical resistance Electrical resistance is the d.c. resistance at 20 C of 1 m of wire. The method used shall provide a precisio
46、n of 0,5 %. For bunched wires a length of up to 10 m shall be used and the ends shall be soldered before the measurement. When measuring the resistance to check for an excessive number of broken wires, a length of 10 m of bunched wire shall be used. If the resistance Rt is measured at a temperature
47、t other than 20 C, the resistance R20 at 20 C shall be calculated by means of the following formula: R20 = )( 201t+ tRwhere t is the actual temperature in degrees Celsius during the measurement; is the temperature coefficient in K1. 8 60851-5 IEC:2008 In the temperature range from 15 C to 25 C, the
48、temperature coefficient to be used shall be: for copper: 20 = 3,96 103K1; for aluminium: 20= 4,07 103K1. One test shall be made. The electrical resistance shall be reported. 4 Test 13: Breakdown voltage 4.1 Principle The test voltage shall be an a.c. voltage of 50 Hz or 60 Hz nominal frequency. The
49、test voltage shall be applied at zero and increased at a uniform rate according to Table 1. Table 1 Rates of test voltage increase Breakdown voltage V Over Up to and including Rate of increase V/s 500 20 500 2 500 100 2 500 500 4.2 Equipment The following equipment shall be used: test transformer with a rated power o
