BS EN 60664-1-2007 Insulation coordination for equipment within low-voltage systems - Principles requirements and tests《低压系统内设备的绝缘配合 原则、要求和试验》.pdf

1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Part 1: Principles, requirements and testsThe European Standard EN 60664-1:2007 has the status of a

2、 British StandardICS 29.080.30Insulation coordination for equipment within low-voltage systems BRITISH STANDARDBS EN 60664-1:2007BS EN 60664-1:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2007 BSI 2007ISBN 978 0 580 54335 7Am

3、endments issued since publicationAmd. No. Date CommentsThis publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.National forewordThis Bri

4、tish Standard is the UK implementation of EN 60664-1:2007. It is identical to IEC 60664-1:2007. It supersedes BS EN 60664-1:2003 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee GEL/109, Insulation co-ordination for low voltage equipment.A list of organ

5、izations represented on this committee can be obtained on request to its secretary.EUROPEAN STANDARD EN 60664-1 NORME EUROPENNE EUROPISCHE NORM July 2007 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotech

6、nische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60664-1:2007 E ICS 29.080.30; 29.080 Supersedes EN 60664-1:2003English version Insulation coordination

7、for equipment within low-voltage systems - Part 1: Principles, requirements and tests (IEC 60664-1:2007) Coordination de lisolement des matriels dans les systmes (rseaux) basse tension - Partie 1: Principes, exigences et essais (CEI 60664-1:2007) Isolationskoordination fr elektrische Betriebsmittel

8、in Niederspannungsanlagen - Teil 1: Grundstze, Anforderungen und Prfungen (IEC 60664-1:2007) This European Standard was approved by CENELEC on 2007-07-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard th

9、e status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, Ge

10、rman). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgar

11、ia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Foreword The text of

12、document 109/58/CDV, future edition 2 of IEC 60664-1, prepared by IEC TC 109, Insulation co-ordination for low-voltage equipment, was submitted to the IEC-CENELEC parallel Unique Acceptance Procedure and was approved by CENELEC as EN 60664-1 on 2007-07-01. This European Standard supersedes EN 60664-

13、1:2003. In addition to a number of editorial improvements, the following main changes have been made with respect to EN 60664-1:2003: amendment of Japanese mains conditions with regard to the rated impulse voltages, the rationalized voltages and the nominal voltages of supply systems for different m

14、odes of overvoltage control; amendment of dimensioning of clearances smaller than 0,01 mm; 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 insulatio

15、n; amendment of creepage distance 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 t

16、est methods“ from a former technical report, Type 2 (now called TS), to a normative Annex C. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2008-04-01 latest date by which th

17、e national standards conflicting with the EN have to be withdrawn (dow) 2010-07-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 60664-1:2007 was approved by CENELEC as a European Standard without any modification. _ EN 60664-1:2007 2 CONTENTS 1

18、Scope and object6 2 Normative references .6 3 Terms and definitions .8 4 Basis for insulation coordination .13 4.1 General .13 4.2 Insulation coordination with regard to voltage13 4.2.1 General .13 4.2.2 Insulation coordination with regard to long-term a.c. or d.c. voltages .14 4.2.3 Insulation coor

19、dination with regard to transient overvoltage.14 4.2.4 Insulation coordination with regard to recurring peak voltage.14 4.2.5 Insulation coordination with regard to temporary overvoltage.14 4.2.6 Insulation coordination with regard to environmental conditions.15 4.3 Voltages and voltage ratings .15

20、4.3.1 General .15 4.3.2 Determination of voltage for long-term stresses.15 4.3.3 Determination of rated impulse voltage16 4.3.4 Determination of recurring peak voltage 18 4.3.5 Determination of temporary overvoltage 18 4.4 Frequency .19 4.5 Time under voltage stress .19 4.6 Pollution19 4.6.1 General

21、 .194.6.2 Degrees of pollution in the micro-environment .20 4.6.3 Conditions of conductive pollution .20 4.7 Information supplied with the equipment20 4.8 Insulating material.20 4.8.1 Comparative tracking index (CTI) 20 4.8.2 Electric strength characteristics .21 4.8.3 Thermal characteristics .21 4.

22、8.4 Mechanical and chemical characteristics .21 5 Requirements and dimensioning rules 22 5.1 Dimensioning of clearances.22 5.1.1 General .22 5.1.2 Dimensioning criteria.22 5.1.3 Electric field conditions23 5.1.4 Altitude23 5.1.5 Dimensioning of clearances of functional insulation .23 5.1.6 Dimension

23、ing of clearances of basic, supplementary and reinforced insulation.23 5.1.7 Isolating distances.24 5.2 Dimensioning of creepage distances .24 5.2.1 General .24 5.2.2 Influencing factors .24 5.2.3 Dimensioning of creepage distances of functional insulation26 5.2.4 Dimensioning of creepage distances

24、of basic, supplementary and reinforced insulation 26 5.2.5 Reduction of creepage distances with the use of a rib (ribs) 26 EN 60664-1:2007 3 5.3 Requirements for design of solid insulation .27 5.3.1 General .27 5.3.2 Stresses 27 5.3.3 Requirements 29 6 Tests and measurements .31 6.1 Tests.31 6.1.1 G

25、eneral .31 6.1.2 Test for verification of clearances 32 6.1.3 Tests for the verification of solid insulation 35 6.1.4 Performing dielectric tests on complete equipment 40 6.1.5 Other tests 41 6.1.6 Measurement accuracy of test parameters 41 6.2 Measurement of creepage distances and clearances.42 Ann

26、ex A (informative) Basic data on withstand characteristics of clearances .47 Annex B (informative) Nominal voltages of supply systems for different modes of overvoltage control .52 Annex C (normative) Partial discharge test methods 54 Annex D (informative) Additional information on partial discharge

27、 test methods .59 Annex E (informative) Comparison of creepage distances specified in Table F.4 and clearances in Table A.1 62 Annex F (normative) Tables.63 Bibliography72 Figure 1 Recurring peak voltage 18 Figure 2 Determination of the width (W) and height (H) of a rib 27 Figure 3 Test voltages .39

28、 Figure A.1 Withstand voltage at 2 000 m above sea level 49 Figure A.2 Experimental data measured at approximately sea level and their low limits for inhomogeneous field.50 Figure A.3 Experimental data measured at approximately sea level and their low limits for homogeneous field .51 Figure C.1 Eart

29、hed test specimen 54 Figure C.2 Unearthed test specimen 54 Figure C.3 Calibration for earthed test specimen .57 Figure C.4 Calibration for unearthed test specimen57 Figure D.1 Partial discharge test circuits59 Annex ZA (normative) Normative references to international publications with theircorrespo

30、nding European publications.73EN 60664-1:2007 4 Figure E.1 Comparison of creepage distances specified in Table F.4 and clearances in Table A.1 62 Table A.1 Withstand voltages in kilovolts for an altitude of 2 000 m above sea level 47 Table A.2 Altitude correction factors 48 Table B.1 Inherent contro

31、l or equivalent protective control.52 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 60099-1 .53 Table F.1 Rated impulse voltage for equipment energized direct

32、ly from the low-voltage mains .63 Table F.2 Clearances to withstand transient overvoltages64 Table F.3a Single-phase three or two-wire a.c. or d.c. systems65 Table F.3b Three-phase four or three-wire a.c. systems.66 Table F.4 Creepage distances to avoid failure due to tracking .67 Table F.5 Test vol

33、tages for verifying clearances at different altitudes.69 Table F.6 Severities for conditioning of solid insulation 69 Table F.7 Clearances to withstand steady-state voltages, temporary overvoltages or recurring peak voltages.70 Table F.7a Dimensioning of clearances to withstand steady-state voltages

34、, temporary overvoltages or recurring peak voltages 70 Table F.7b Additional information concerning the dimensioning of clearances to avoid partial discharge70 Table F.8 Altitude correction factors.71 EN 60664-1:2007 5 INSULATION COORDINATION FOR EQUIPMENT WITHIN LOW-VOLTAGE SYSTEMS Part 1: Principl

35、es, requirements and tests 1 Scope and object This part of IEC 60664 deals with insulation coordination for equipment within low-voltage systems. It applies to equipment for use up to 2 000 m above sea level having a rated voltage up to a.c. 1 000 V with rated frequencies up to 30 kHz, or a rated vo

36、ltage up to d.c. 1 500 V. It specifies the requirements for clearances, creepage distances and solid insulation for equipment based upon their performance criteria. It includes methods of electric testing with respect to insulation coordination. The minimum clearances specified in this standard do n

37、ot apply where ionized gases occur. Special requirements for such situations may be specified at the discretion of the relevant technical committee. This standard does not deal with distances through liquid insulation, through gases other than air, through compressed air. NOTE 1 Insulation coordinat

38、ion for equipment within low-voltage systems with rated frequencies above 30 kHz is given in IEC 60664-4. NOTE 2 Higher voltages may exist in internal circuits of the equipment. NOTE 3 Guidance for dimensioning for altitudes exceeding 2 000 m is given in Table A.2. The object of this basic safety st

39、andard is to guide technical committees responsible for different equipment in order to rationalize their requirements so that insulation coordination is achieved. It provides the information necessary to give guidance to technical committees when specifying clearances in air, creepage distances and

40、 solid insulation for equipment. Care should be taken to see that manufacturers and technical committees are responsible for application of the requirements, as specified in this basic safety publication, or make reference to it, where necessary, in standards for equipment within their scope. In the

41、 case of missing specified values for clearances, creepage distances and requirements for solid insulation in the relevant product standards, or even missing standards, this standard is applicable. 2 Normative references The following referenced documents are indispensable for the application of thi

42、s document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60038:1983, IEC standard voltages EN 60664-1:2007 6 IEC 60050(151):2001, International Electrotechnical Vocabulary (IEV) Cha

43、pter 151: Electrical and magnetic devices IEC 60050(212):1990, International Electrotechnical Vocabulary Chapter 212: Insulating solids, liquids and gases IEC 60050(604):1987, International Electrotechnical Vocabulary (IEV) Chapter 604: Generation, transmission and distribution of electricity Operat

44、ion Amendment 1 (1998) IEC 60050(826):2004, International Electrotechnical Vocabulary (IEV) Part 826: Electrical installations IEC 60068-1:1988, Environmental testing Part 1: General and guidance IEC 60068-2-2:1974, Environmental testing Part 2: Tests Tests B: Dry heat IEC 60068-2-14:1984, Environme

45、ntal testing Part 2: Tests Test N: Change of temperature IEC 60068-2-78:2001, Environmental testing Part 2-78: Tests Test Cab: Damp heat, steady state IEC 60085:2004, Electrical insulation Thermal classification IEC 60099-1:1991, Surge arresters Part 1: Non-linear resistor type gapped surge arrester

46、s for a.c. systems IEC 60112:2003, Method for the determination of the proof and the comparative tracking indices of solid insulating materials IEC 60216, (all parts) Electrical insulating materials Properties for thermal endurance IEC 60243-1:1998, Electrical strength of insulating materials Test m

47、ethods Part 1: Tests at power frequencies IEC 60270:2000, High-voltage test techniques Partial discharge measurements IEC 60364-4-44:2001, Electrical installations of buildings Part 4-44: Protection for safety Protection against voltage disturbances and electromagnetic disturbances Amendment 1 (2003

48、) IEC 60664-4:2005, Insulation coordination for equipment within low-voltage systems Part 4: Consideration of high-frequency voltage stress IEC 60664-5, Insulation coordination for equipment within low-voltage systems Part 5: A comprehensive method for determining clearances and creepage distances e

49、qual to or less than 2 mm 1IEC 61140:2001, Protection against electric shock Common aspects for installation and equipment Amendment 1 (2004) IEC 61180-1:1992, High-voltage test techniques for low-voltage equipment Part 1: Definitions, test and procedure requirements 1A second edition of IEC 60664-5 will be published shortly. EN 60664-1:2007 7 IEC 61180-2:1994, High-volta