1、 IEC 62146-1 Edition 1.0 2013-09 INTERNATIONAL STANDARD NORME INTERNATIONALE Grading capacitors for high-voltage alternating current circuit-breakers Part 1: General Condensateurs de rpartition pour disjoncteurs courant alternatif haute tension Partie 1: Gnralits IEC62146-1:2013 THIS PUBLICATION IS
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16、Grading capacitors for high-voltage alternating current circuit-breakers Part 1: General Condensateurs de rpartition pour disjoncteurs courant alternatif haute tension Partie 1: Gnralits INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE W ICS 31.060.01; 31.060.70 P
17、RICE CODE CODE PRIX ISBN 978-2-8322-1109-0 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vo
18、us avez obtenu cette publication via un distributeur agr. 2 62146-1 IEC:2013 CONTENTS FOREWORD . 4 1 Scope . 6 2 Normative references . 6 3 Terms and definitions . 7 4 Abbreviations . 12 5 Normal and special service conditions 13 5.1 General . 13 5.2 Normal service conditions . 13 5.2.1 Ambient temp
19、erature . 13 5.2.2 Mechanical stress and vibrations . 13 5.2.3 Additional service conditions for indoor and completely immersed grading capacitor . 13 5.3 Special service conditions . 13 5.3.1 General . 13 5.3.2 Earthquakes 13 6 Ratings . 14 6.1 Rated voltage (Ucr) . 14 6.2 Rated insulation level 14
20、 6.3 Rated frequency (fr) 15 7 Design and construction . 15 7.1 Capacitance tolerances . 15 7.2 Capacitor loss requirements 15 7.3 Angle of mounting . 15 7.4 Minimum withstand value of mechanical bending load . 15 7.5 Requirements for impregnation medium in capacitor . 16 7.6 Protection against corr
21、osion 16 7.7 Nameplates . 16 7.8 Creepage distances for outdoor insulators . 16 7.9 Tightness 16 7.9.1 Liquid tightness . 16 7.9.2 Gas tightness for grading capacitors immersed in gas . 17 8 Type tests 17 8.1 Information for identification of specimens . 17 8.2 Information to be included in type-tes
22、t reports . 17 8.3 Test conditions 18 8.4 Dielectric tests 18 8.4.1 General . 18 8.4.2 Capacitance measurement at power frequency 19 8.4.3 Measurement of the tangent of the loss angle (tan) . 20 8.4.4 Partial discharge test . 20 8.4.5 Switching impulse voltage test . 21 8.4.6 Lightning and chopped i
23、mpulse voltage test. 21 8.4.7 Power frequency voltage test. 22 8.5 Voltage test at low and high temperature . 22 8.6 Radio interference voltage (RIV) test . 23 8.7 Resonance frequency measurements 23 62146-1 IEC:2013 3 8.8 Mechanical bending test 23 8.9 Tightness test at different temperatures 23 8.
24、10 Tightness test to check gas ingress from a pressurised environment . 24 8.11 Vibration test . 24 9 Routine tests 25 9.1 General . 25 9.2 Test conditions 25 9.3 Capacitance and loss angle measurement at power frequency 25 9.4 Power frequency voltage test 26 9.5 Partial discharge test . 26 9.6 Tigh
25、tness test 26 9.6.1 General . 26 9.6.2 Oil impregnated capacitor 26 9.6.3 Tightness test for gas filled grading capacitors 26 9.7 Visual inspection and dimensional check . 27 10 Recommendations for transport, storage, erection, operation and maintenance 27 10.1 General . 27 10.2 Conditions during tr
26、ansport, storage and installation . 27 10.3 Installation. 27 10.4 Unpacking and lifting . 28 10.5 Assembly 28 10.5.1 Mounting . 28 10.5.2 Connections to metal parts 28 10.5.3 Final installation inspection 28 10.6 Operation 28 10.7 Maintenance 28 10.7.1 General . 28 10.7.2 Recommendation for the inst
27、allation and maintenance 28 10.7.3 Recommendations for the user 29 10.7.4 Failure report . 29 11 Safety . 30 11.1 General . 30 11.2 Precautions by manufacturers . 30 11.3 Precautions by users . 31 11.4 National regulations 31 12 Environmental aspects . 31 Annex A (informative) Corrosion: Information
28、 regarding service conditions and recommended test requirements . 32 Annex B (informative) Resonance frequency measurements 33 Bibliography 34 Figure 1 Dielectric type tests 19 Figure 2 Dielectric routine test . 25 Figure B.1 Example of resonance frequency measurement recording (see 8.7) 33 Table 1
29、Partial discharge test voltages and permissible levels . 21 4 62146-1 IEC:2013 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ GRADING CAPACITORS FOR HIGH-VOLTAGE ALTERNATING CURRENT CIRCUIT-BREAKERS Part 1: General FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organizat
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37、r any services carried out by independent certification bodies. 6) All users should ensure that they have 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 a
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39、Attention 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 right
40、s. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 62146-1 has been prepared by IEC technical committee 33: Power capacitors and their applications. The text of this standard is based on the following documents: FDIS Report on voting 33/535
41、/FDIS 33/541/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 publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts in the IEC 62146 series, published under the g
42、eneral title Grading capacitators for high-voltage alternating current circuit-breakers, can be found on the IEC website. 62146-1 IEC:2013 5 The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webst
43、ore.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 62146-1 IEC:2013 GRADING CAPACITORS FOR HIGH-VOLTAGE ALTERNATING CURRENT CIRCUIT-BREAKERS Part 1: General 1 Scope This part of the I
44、EC 62146 series is applicable to grading capacitors used on circuit-breakers. Their function is to control the voltage distribution across the individual interrupter units of a multi-break circuit-breaker. Grading capacitors can also be used in parallel to the interrupter unit on single break circui
45、t-breakers to modify the Transient Recovery Voltage (TRV). The grading capacitor is a sub-component for the circuit-breaker and shall be specified in accordance with the circuit-breaker specifications. This standard applies to grading capacitors falling into one or both of the following categories f
46、or: mounting on air-insulated circuit-breakers; mounting on enclosed circuit-breakers (for example immersed in SF6, in oil, etc.). The testing for each of the above applications is in some cases different. The object of this standard is: to define uniform rules regarding performances, testing and ra
47、ting; to define specific safety rules; to provide a guidance for installation and operation. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applie
48、s. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60050 (all parts), International electrotechnical vocabulary (available at http:/www.electropedia.org) IEC 60060-1:2010, High-voltage test techniques Part 1: General definitions and test
49、requirements IEC 60068-2-17:1994, Official version in Russian Basic environmental testing procedures Part 2-17: Tests Test Q: Sealing IEC 60071-1:2006, Insulation co-ordination Part 1: Definitions, principles and rules IEC 60270:2000, High-voltage test techniques Partial discharge measurements 62146-1 IEC:2013 7 IEC 60376:2005, Specification of technical grade sulfur hexafluoride (SF6) for use in electrical eq
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