1、 IEC 60252-2 Edition 2.0 2010-12 INTERNATIONAL STANDARD NORME INTERNATIONALE AC motor capacitors Part 2: Motor start capacitors Condensateurs des moteurs courant alternatif Partie 2: Condensateurs de dmarrage de moteurs IEC 60252-2:2010 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2010 IEC, Gen
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16、ax: +41 22 919 03 00 IEC 60252-2 Edition 2.0 2010-12 INTERNATIONAL STANDARD NORME INTERNATIONALE AC motor capacitors Part 2: Motor start capacitors Condensateurs des moteurs courant alternatif Partie 2: Condensateurs de dmarrage de moteurs INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTRO
17、TECHNIQUE INTERNATIONALE X ICS 31.060.30; 31.060.70 PRICE CODE CODE PRIX ISBN 978-2-88912-293-6 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale 2 60252-2 IEC:2010 CONTENTS FORE WORD 4 1 Scop e 6 2 Normative reference
18、s 6 3 Terms and definitions 7 4 Service conditions 10 4.1 Normal service conditions . 10 4.2 Preferred tolerances on capacitance 10 5 Self-healing motor start capacitors . 10 5.1 Quality requirements and tests 10 5.1.1 Test requirements . 10 5.1.2 Nature of tests 11 5.1.3 Type tests 11 5.1.4 Routine
19、 tests 13 5.1.5 Tangent of the loss-angle measurement 13 5.1.6 Visual examination 13 5.1.7 Voltage test between the terminals . 14 5.1.8 Voltage test between terminals and case . 14 5.1.9 Capacitance measurement . 14 5.1.10 Check of dimensions . 14 5.1.11 Mechanical tests . 15 5.1.12 Sealing test 17
20、 5.1.13 Endurance test . 17 5.1.14 Damp heat test . 19 5.1.15 Self-healing test 19 5.1.16 Destruction test . 19 5.1.17 Resistance to heat, fire and tracking . 22 5.2 Overloads . 23 5.2.1 Maximum permissible voltage . 23 5.2.2 Maximum permissible current . 23 5.2.3 Maximum permissible reactive output
21、 23 5.3 Safety requirements . 23 5.3.1 Creepage distances and clearances 23 5.3.2 Terminals and connecting cables 24 5.3.3 Earth connections . 24 5.3.4 Discharge devices . 25 5.3.5 Pollution . 25 5.4 Marking . 25 6 Electrolytic motor start capacitors . 26 6.1 Quality requirements and tests 26 6.1.1
22、Test requirements . 26 6.1.2 Nature of tests 26 6.1.3 Type tests 27 6.1.4 Routine tests 29 6.1.5 Visual examination 29 6.1.6 Voltage test between the terminals . 29 6.1.7 Voltage test between terminals and case . 29 60252-2 IEC:2010 3 6.1.8 Capacitance and power factor measurement 30 6.1.9 Check of
23、dimensions . 31 6.1.10 Mechanical tests . 31 6.1.11 Sealing test 33 6.1.12 Endurance test . 33 6.1.13 Damp heat test . 35 6.1.14 Pressure relief test 35 6.1.15 Resistance to heat, fire and tracking . 36 6.2 Overloads . 36 6.2.1 Maximum permissible voltage . 36 6.2.2 Maximum permissible current . 36
24、6.2.3 Maximum permissible reactive output 37 6.3 Safety requirements . 37 6.3.1 Creepage distances and clearances 37 6.3.2 Terminals and connecting cables 37 6.3.3 Earth connections . 37 6.3.4 Discharge devices . 38 6.3.5 Pollution . 38 6.4 Marking . 38 7 Guidance for installation and operation . 39
25、 7.1 General . 39 7.2 Choice of rated voltage . 39 7.2.1 Measurement of working voltage . 39 7.2.2 Influence of capacitance 40 7.3 Checking capacitor temperature 40 7.3.1 Choice of maximum permissible capacitor operating temperature . 40 7.3.2 Choice of minimum permissible capacitor operating temper
26、ature 40 7.4 Checking transients 40 7.5 Storage of electrolytic capacitors . 41 Annex A (normative) Test voltage 42 Figure 1 Test apparatus for d.c. conditioning 20 Figure 2 Test apparatus for a.c. destruction test . 20 Figure 3 Arrangement to produce the variable inductor L in Figure 2 . 21 Figure
27、4 Test circuit for measurement of capacitance and power factor . 30 Table 1 Type test schedule . 12 Table 2 Test voltages . 14 Table 3 Torque 15 Table 4 Minimum creepage distances and clearances . 25 Table 5 Type test schedule . 28 Table 6 Test voltages . 29 Table 7 Torque 32 Table 8 Minimum creepag
28、e distances and clearances . 38 4 60252-2 IEC:2010 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ AC MOTOR CAPACITORS Part 2: Motor start capacitors FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical c
29、ommittees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Techn
30、ical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmen
31、tal and non- governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or a
32、greements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international u
33、se and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to pro
34、mote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indi
35、cated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6
36、) 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 and IEC National Committees for any personal injury, property dama
37、ge 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) Attention is drawn to the Normative references cited in this publ
38、ication. 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. IEC shall not be held responsible for identifying any or all s
39、uch patent rights. International Standard IEC 60252-2 has been prepared by IEC technical committee 33: Power capacitors and their applications. This second edition cancels and replaces the first edition of IEC 60252-2, published in 2003, and constitutes a technical revision. The main changes with re
40、spect to the previous edition are listed below: definition of segmented film capacitors; clearer definition of the purpose of d.c. conditioning in destruction test. 60252-2 IEC:2010 5 The text of this standard is based on the following documents: FDIS Report on voting 33/476/FDIS 33/480/RVD Full inf
41、ormation 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 of IEC 60252 series, published under the general title AC motor capacit
42、ors, can be found on the IEC website. 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:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reco
43、nfirmed, withdrawn, replaced by a revised edition, or amended. 6 60252-2 IEC:2010 AC MOTOR CAPACITORS Part 2: Motor start capacitors 1 Scope This part of IEC 60252 applies to motor start capacitors intended for connection to windings of asynchronous motors supplied from a single-phase system having
44、the frequency of the mains. This standard covers impregnated or unimpregnated metallized motor start capacitors having a dielectric of paper or plastic film, or a combination of both and electrolytic motor start capacitors with non-solid electrolyte, with rated voltages up to and including 660 V. 2
45、Normative references The following referenced documents are indispensable for the application 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 60062, Marking codes for
46、 resistors and capacitors IEC 60068-2 (all parts), Environmental testing Part 2: Tests IEC 60068-2-6, Environmental testing Part 2-6: Tests Test Fc: Vibration (sinusoidal) IEC 60068-2-14, Environmental testing Part 2-14: Tests Test N: Change of temperature IEC 60068-2-20, Environmental testing Part
47、2-20: Tests Test T: Soldering IEC 60068-2-21, Environmental testing Part 2-21: Tests Test U: Robustness of terminations and integral mounting devices IEC 60068-2-78:2001, Environmental testing Part 2-78: Tests Test Cab: Damp heat, steady state IEC 60112, Method for determining the comparative and th
48、e proof tracking indices of solid insulating materials under moist conditions IEC 60309-1:1999, Plugs, socket-outlets and couplers for industrial purposes Part 1: General requirements IEC 60529, Degrees of protection provided by enclosures (IP Code) IEC 60695-2-10:2000, Fire hazard testing Part 2-10
49、: Glowing/hot-wire based test methods Glow-wire apparatus and common test procedure IEC 60695-2-11:2000, Fire hazard testing Part 2-11: Glowing/hot-wire based test methods Glow-wire flammability test method for end-products ISO 4046, Paper, board, pulps and related terms Vocabulary 60252-2 IEC:2010 7 3 Terms and definitions For the purposes of this document, the followin
