1、 IEC 60587 Edition 3.0 2007-05 INTERNATIONAL STANDARD NORME INTERNATIONALE Electrical insulating materials used under severe ambient conditions Test methods for evaluating resistance to tracking and erosion Matriaux isolants lectriques utiliss dans des conditions ambiantes svres Mthodes dessai pour
2、valuer la rsistance au cheminement et lrosion IEC 60587:2007 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2007 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanica
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16、ou si vous avez des questions, visitez le FAQ du Service clients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 60587 Edition 3.0 2007-05 INTERNATIONAL STANDARD NORME INTERNATIONALE Electrical insulating materials used under severe ambient conditions Test methods
17、 for evaluating resistance to tracking and erosion Matriaux isolants lectriques utiliss dans des conditions ambiantes svres Mthodes dessai pour valuer la rsistance au cheminement et lrosion INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE N ICS 17.220.99; 29.035.0
18、1 PRICE CODE CODE PRIX ISBN 2-8318-1068-3 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale 2 60587 IEC:2007 CONTENTS FOREWORD.3 1 Scope.5 2 Terms and definitions .5 3 Test specimens 6 3.1 Dimensions .6 3.2 Preparation
19、 .6 4 Apparatus.6 4.1 Electrical apparatus.6 4.2 Electrodes.8 4.3 Contaminant9 4.4 Timing device10 4.5 Depth gauge10 4.6 Ventilation.10 5 Procedure 11 5.1 Preparation of the test.11 5.2 Method 1: Application of constant tracking voltage 13 5.3 Method 2: stepwise tracking voltage14 5.4 End-point crit
20、eria.14 6 Test report15 Figure 1 Test specimen with holes for fixing electrodes .6 Figure 2 Schematic circuit diagram 7 Figure 3 Example: typical circuit for an overcurrent delay relay (F in Figure 2).8 Figure 4 Top electrode, stainless steel 0,5 mm thick 9 Figure 5 Bottom electrode, stainless steel
21、 0,5 mm thick .9 Figure 6 Assembly of the electrodes 10 Figure 7 Test assembly, schematic 11 Figure 8 Mounting support .12 Figure 9 Filter-paper (eight sheets requested for each top electrode).12 Table 1 Test parameters8 60587 IEC:2007 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTRICAL INSULAT
22、ING MATERIALS USED UNDER SEVERE AMBIENT CONDITIONS TEST METHODS FOR EVALUATING RESISTANCE TO TRACKING AND EROSION FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committe
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33、 Standard IEC 60587 has been prepared by IEC technical committee 112: Evaluation and qualification of electrical insulating materials and systems. This third edition cancels and replaces the second edition, published in 1984, and constitutes a technical revision. The main changes from the previous e
34、dition are as follows: experience has indicated the need for improved description of the experimental method. For the preparation of the test specimens abrasion is recommended only if necessary. The ventilation of the test chamber is described in detail. For specimens of soft elastomeric materials a
35、 mounting support is described. The maximum depth of erosion has to be reported in the classification. This bilingual version, published in 2009-11, corresponds to the English version. 4 60587 IEC:2007 The text of this standard is based on the following documents: FDIS Report on voting 112/56/FDIS 1
36、12/61/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. The French version of this standard has not been voted upon. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The committe
37、e 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 reconfirmed; withdrawn; replaced by a revised
38、 edition, or amended. 60587 IEC:2007 5 ELECTRICAL INSULATING MATERIALS USED UNDER SEVERE AMBIENT CONDITIONS TEST METHODS FOR EVALUATING RESISTANCE TO TRACKING AND EROSION 1 Scope This International standard describes two test methods for the evaluation of electrical insulating materials for use unde
39、r severe ambient conditions at power frequencies (45 Hz to 65 Hz) by measurement of the resistance to tracking and erosion, using a liquid contaminant and inclined plane specimens. The two methods are as follows: Method 1: constant tracking voltage; Method 2: stepwise tracking voltage. NOTE 1 Method
40、 1 is the most widely used method as there is less need for continual inspection. NOTE 2 The test conditions are designed to accelerate the production of the effects, but do not reproduce all the conditions encountered in service. 2 Terms and definitions For the purposes of this document, the follow
41、ing terms and definitions apply. 2.1 track partially conducting path created by localized deterioration on the surface of an insulating material 2.2 tracking progressive degradation of the surface of a solid insulating material by local discharges to form conducting or partially conducting paths NOT
42、E Tracking usually occurs due to surface contamination. IEC 60050-212-01-42 1 2.3 erosion, electrical loss of material by leakage current or electrical discharge 2.4 time-to-track time required to produce tracks under the specified conditions of test 1IEC 60050-212:1990, International Electrotechnic
43、al Vocabulary Chapter 212: Insulating solids, liquids and gases 6 60587 IEC:2007 3 Test specimens 3.1 Dimensions Flat specimens with a size of at least 50 mm X 120 mm shall be used. The preferred thickness shall be 6 mm. Other thicknesses may be used, but must be mentioned in the test report. The sp
44、ecimens shall be drilled as shown in Figure 1, to attach the electrodes. 120 (at least) 50 (at least) 95 10 5 25 Reference marks IEC 672/07 Dimensions in millimetres Figure 1 Test specimen with holes for fixing electrodes 3.2 Preparation The specimens shall be washed with a suitable solvent (e.g. is
45、opropyl alcohol) to remove leftovers such as fat from handling. After that the specimens shall be rinsed with distilled water. The cleaned specimens shall be mounted carefully to avoid contamination. If the contaminant does not wet the surface evenly within the observation time mentioned in 5.1, the
46、 surface of the specimens can be slightly abraded. The abrasion should be done with a fine (U.S. grade (CAMI): 400 mesh; European grade (FEPA): P800) aluminium-oxide- or zirconia-aluminia-abrasive under water until the whole surface wets and appears uniformly matt when dry. When abraded the specimen
47、 shall be cleaned another time with distilled water. Abrasion has to be mentioned in the test report. Specimens used for criterion B (see 5.4) shall have reference marks on both edges, 25 mm above the lower electrode (see Figures 1 and 7). 4 Apparatus 4.1 Electrical apparatus A schematic circuit is
48、given in Figure 2. As the test will be carried out at high voltages, it is obviously necessary to use an earthed safety enclosure. The circuit comprises: 60587 IEC:2007 7 A 45 Hz to 65 Hz power supply with an output voltage stabilized to 5 % which can be varied up to about 6 kV with a rated current
49、not less than 0,1 A for each specimen. Preferred test voltages are 2,5 kV, 3,5 kV and 4,5 kV, for method 1. F V T VT S Sp R IEC 673/07 Components S power supply switch VT variable ratio transformer T high-voltage transformer R series resistor V voltmeter Sp specimen F overcurrent device, fuse or relay Figure 2 Schematic circuit diagram NOTE If only one power
