1、 INTERNATIONAL STANDARD IECCEINORME INTERNATIONALE60664-1Deuxime editionSecond dition2007-04Insulation coordination for equipment within low-voltage systems Part 1: Principles, requirements and tests Coordination de lisolement des matriels dans les systmes (rseaux) basse tension Partie 1: Principes,
2、 exigences et essais Reference number Numro de rfrence IEC/CEI 60664-1:2007 BASIC SAFETY PUBLICATION PUBLICATION FONDAMENTALE DE SCURIT THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2007 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be
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14、sirez nous donner des commentaires sur cette publication 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 INTERNATIONAL STANDARD IECCEINORME INTERNATIONALE60664-1Deuxime editionSecond dition2007-04Insulat
15、ion coordination for equipment within low-voltage systems Part 1: Principles, requirements and tests Coordination de lisolement des matriels dans les systmes (rseaux) basse tension Partie 1: Principes, exigences et essais For price, see current cataloguePour prix, voir catalogue en vigueur PRICE COD
16、E CODE PRIX XB Commission Electrotechnique InternationaleInternational Electrotechnical Commission BASIC SAFETY PUBLICATION PUBLICATION FONDAMENTALE DE SCURIT 2 60664-1 IEC:2007 CONTENTS 1 Scope and object7 2 Normative references .7 3 Terms and definitions .9 4 Basis for insulation coordination .14
17、4.1 General .14 4.2 Insulation coordination with regard to voltage14 4.2.1 General .14 4.2.2 Insulation coordination with regard to long-term a.c. or d.c. voltages .15 4.2.3 Insulation coordination with regard to transient overvoltage.15 4.2.4 Insulation coordination with regard to recurring peak vo
18、ltage.15 4.2.5 Insulation coordination with regard to temporary overvoltage.15 4.2.6 Insulation coordination with regard to environmental conditions.16 4.3 Voltages and voltage ratings .16 4.3.1 General .16 4.3.2 Determination of voltage for long-term stresses.16 4.3.3 Determination of rated impulse
19、 voltage17 4.3.4 Determination of recurring peak voltage 19 4.3.5 Determination of temporary overvoltage 19 4.4 Frequency .20 4.5 Time under voltage stress .20 4.6 Pollution20 4.6.1 General .20 4.6.2 Degrees of pollution in the micro-environment .21 4.6.3 Conditions of conductive pollution .21 4.7 I
20、nformation supplied with the equipment21 4.8 Insulating material.21 4.8.1 Comparative tracking index (CTI) 21 4.8.2 Electric strength characteristics .22 4.8.3 Thermal characteristics .22 4.8.4 Mechanical and chemical characteristics .22 5 Requirements and dimensioning rules 23 5.1 Dimensioning of c
21、learances.23 5.1.1 General .23 5.1.2 Dimensioning criteria.23 5.1.3 Electric field conditions24 5.1.4 Altitude24 5.1.5 Dimensioning of clearances of functional insulation .24 5.1.6 Dimensioning of clearances of basic, supplementary and reinforced insulation.24 5.1.7 Isolating distances.25 5.2 Dimens
22、ioning of creepage distances .25 5.2.1 General .25 5.2.2 Influencing factors .25 5.2.3 Dimensioning of creepage distances of functional insulation27 5.2.4 Dimensioning of creepage distances of basic, supplementary and reinforced insulation 27 5.2.5 Reduction of creepage distances with the use of a r
23、ib (ribs) 27 60664-1 IEC:2007 3 5.3 Requirements for design of solid insulation .28 5.3.1 General .28 5.3.2 Stresses 28 5.3.3 Requirements 30 6 Tests and measurements .32 6.1 Tests.32 6.1.1 General .32 6.1.2 Test for verification of clearances 33 6.1.3 Tests for the verification of solid insulation
24、36 6.1.4 Performing dielectric tests on complete equipment 41 6.1.5 Other tests 42 6.1.6 Measurement accuracy of test parameters 42 6.2 Measurement of creepage distances and clearances.43 Annex A (informative) Basic data on withstand characteristics of clearances .48 Annex B (informative) Nominal vo
25、ltages of supply systems for different modes of overvoltage control .53 Annex C (normative) Partial discharge test methods 55 Annex D (informative) Additional information on partial discharge test methods .60 Annex E (informative) Comparison of creepage distances specified in Table F.4 and clearance
26、s in Table A.1 63 Annex F (normative) Tables.64 Bibliography73 Figure 1 Recurring peak voltage 19 Figure 2 Determination of the width (W) and height (H) of a rib 28 Figure 3 Test voltages .40 Figure A.1 Withstand voltage at 2 000 m above sea level 50 Figure A.2 Experimental data measured at approxim
27、ately sea level and their low limits for inhomogeneous field.51 Figure A.3 Experimental data measured at approximately sea level and their low limits for homogeneous field .52 Figure C.1 Earthed test specimen 55 Figure C.2 Unearthed test specimen 55 Figure C.3 Calibration for earthed test specimen .
28、58 Figure C.4 Calibration for unearthed test specimen58 Figure D.1 Partial discharge test circuits60 4 60664-1 IEC:2007 Figure E.1 Comparison of creepage distances specified in Table F.4 and clearances in Table A.1 63 Table A.1 Withstand voltages in kilovolts for an altitude of 2 000 m above sea lev
29、el 48 Table A.2 Altitude correction factors 49 Table B.1 Inherent control or equivalent protective control.53 Table B.2 Cases where protective control is necessary and control is provided by surge arresters having a ratio of clamping voltage to rated voltage not smaller than that specified by IEC 60
30、099-1 .54 Table F.1 Rated impulse voltage for equipment energized directly from the low-voltage mains .64 Table F.2 Clearances to withstand transient overvoltages65 Table F.3a Single-phase three or two-wire a.c. or d.c. systems66 Table F.3b Three-phase four or three-wire a.c. systems.67 Table F.4 Cr
31、eepage distances to avoid failure due to tracking .68 Table F.5 Test voltages for verifying clearances at different altitudes.70 Table F.6 Severities for conditioning of solid insulation 70 Table F.7 Clearances to withstand steady-state voltages, temporary overvoltages or recurring peak voltages.71
32、Table F.7a Dimensioning of clearances to withstand steady-state voltages, temporary overvoltages or recurring peak voltages 71 Table F.7b Additional information concerning the dimensioning of clearances to avoid partial discharge71 Table F.8 Altitude correction factors.72 60664-1 IEC:2007 5 INTERNAT
33、IONAL ELECTROTECHNICAL COMMISSION _ INSULATION COORDINATION FOR EQUIPMENT WITHIN LOW-VOLTAGE SYSTEMS Part 1: Principles, requirements and tests FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical com
34、mittees (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, Technic
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38、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 promot
39、e 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 indicat
40、ed in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to
41、 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 damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
42、 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 the referenced publications is indispensable for the correct application of this publication. 9)
43、 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. International Standard IEC 60664 has been prepared by technical committee 109: Insulation coo
44、rdination for low-voltage equipment. This second edition cancels and replaces the first edition, published in 1992, amendments 1 (2000) and 2 (2002) and a corrigendum (2002). It has the status of a basic safety publication in accordance with IEC Guide 104. In addition to a number of editorial improv
45、ements, the following main changes have been made with respect to the previous edition: Amendment of Japanese mains conditions with regard to the rated impulse voltages, the rationalized voltages and the nominal voltages of supply systems for different modes of overvoltage control Amendment of dimen
46、sioning of clearances smaller than 0,01 mm 6 60664-1 IEC:2007 Alignment of the table and the corresponding formula regarding test voltages for verifying clearances at different altitudes Amendment of interpolation of the creepage distance values for functional insulation Amendment of creepage distan
47、ce dimensioning taking into account ribs Revision of the former Clause 4 “Tests and measurements“ (now Clause 6) to achieve a more detailed description of the tests and their purpose, the test equipment and possible alternatives Change of Annex C “Partial discharge test methods“ from a former techni
48、cal report, Type 2 (now called TS), to a normative Annex C. The text of this standard is based on the following documents: CDV Report on voting 109/58/CDV 109/62/RVC Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. Th
49、is publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts in the IEC 60664 series, under the general title Insulation coordination for equipment within low-voltage systems, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged unti
