• IEC 60664-4:2005

    Current The latest, up-to-date edition.

    Insulation coordination for equipment within low-voltage systems - Part 4: Consideration of high-frequency voltage stress

    Available format(s):  Hardcopy, PDF, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Language(s):  English - French, Spanish, Castilian

    Published date:  15-09-2005

    Publisher:  International Electrotechnical Committee

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    Table of Contents - (Show below) - (Hide below)

    FOREWORD
    INTRODUCTION
    1 Scope and object
    2 Normative references
    3 Terms and definitions
    4 Clearances
      4.1 General conditions
      4.2 Basic information
      4.3 Homogeneous and approximately homogeneous fields
      4.4 Inhomogeneous fields
    5 Creepage distances
      5.1 Experimental data
      5.2 Dimensioning of creepage distances
    6 Solid insulation
      6.1 General consideration
      6.2 Influencing factors
      6.3 Dimensioning of solid insulation
    7 High-frequency testing
      7.1 Basic requirements
      7.2 Test voltage source
      7.3 Conditioning
      7.4 High-frequency breakdown test
      7.5 High-frequency partial discharge test
      7.6 Examples of test results
    8 Non sinusoidal voltages
      8.1 General considerations
      8.2 Periodic impulse voltage
      8.3 Harmonic analysis
      8.4 Dimensioning procedure and testing
    Annex A (informative) Insulation characteristics of clearances
                          at high-frequency voltages
    Annex B (informative) Insulation characteristics of creepage
                          distances at high-frequency voltages
    Annex C (informative) Insulation characteristics of solid
                          insulation at high-frequency voltages
    Annex D (normative) Testing of insulation at high-frequency
                        voltages
    Annex E (informative) Insulation stressed with non-sinusoidal
                          high-frequency voltages
    Annex F (informative) Dimensioning diagrams
    Bibliography

    Abstract - (Show below) - (Hide below)

    IEC 60664-4:2005 Deals with basic, supplementary and reinforced insulation subjected to high-frequency voltage stress within low-voltage equipment. The dimensioning values directly apply for basic insulation; for reinforced insulation additional requirements apply according to Part 1. It is applicable for the dimensioning of clearances, creepage distances and solid insulation stressed by any type of periodic voltages with a fundamental frequency above 30 kHz and up to 10 MHz. This part of IEC 60664 can only be used together with IEC 60664-1 or with IEC 60664-5 (in this standard called Part 1 or Part 5). By using Part 1 or Part 5 together with this part the frequency limit of Part 1 or Part 5 is extended to frequencies higher than 30 kHz. This part also applies to Part 3 for frequencies greater than 30 kHz and protection of type 1. For type 2 protection this question is under consideration. Applies to equipment for use up to 2 000 m above sea level having a rated voltage up to a.c. 1 000 V. Specifies the requirements for clearances, creepage distances and solid insulation for equipment based upon their performance criteria. lt includes methods of electric testing with respect to insulation coordination. The minimum clearances specified in this part do not apply where ionized gases occur. Special requirements for such situations may be specified at the discretion of the relevant technical committee. This part does not deal with distances
    - through liquid insulation,
    - through gases other than air,
    - through compressed air.
    The object of this standard is to guide technical committees responsible for different equipment in order to rationalise their requirements so that insulation coordination is achieved when specifying clearances in air, creepage distances and solid insulation for equipment. The major changes made during the revision of IEC 60664-4 were the following:
    - inclusion of more recent information about the withstand characteristics of insulation at high-frequency voltage stress (see Annexes A, B and C);
    - inclusion of requirements for the dimensioning of clearances at high-frequency voltage stress (see Clause 4);
    - inclusion of requirements for the dimensioning of creepage distances at high-frequency voltage stress (see Clause 5);
    - inclusion of requirements for the dimensioning of solid insulation at high-frequency voltage stress (see Clause 6);
    - inclusion of diagrams to provide guidance on dimensioning with respect to high-frequency voltage stress (see Annex F);
    specification of tests with respect to high-frequency voltage stress (see Clause 7);
    - inclusion of test circuits for high-frequency voltage withstand testing and partial discharge testing (see Annex D.1 and D.2.1);
    - inclusion of design criteria for partial discharge test circuits at high-frequency voltage (see Annex D.2.2);
    - inclusion of criteria for dealing with non sinusoidal voltage stress (see Clause 8 and Annex E).

    General Product Information - (Show below) - (Hide below)

    Committee TC 109
    Development Note To be used in conjunction with IEC 60664-1 and IEC 60664-5. (09/2005) Stability Date: 2020. (11/2012)
    Document Type Standard
    Publisher International Electrotechnical Committee
    Status Current

    Standards Referenced By This Book - (Show below) - (Hide below)

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    EN 60335-1:2012/A13:2017 HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES - SAFETY - PART 1: GENERAL REQUIREMENTS (IEC 60335-1:2010, MODIFIED)
    CAN/CSA-C22.2 NO. 61010-031:17 Safety requirements for electrical equipment for measurement, control and laboratory use Part 031: Safety requirements for hand-held and hand-manipulated probe assemblies for electrical test and measurement (Binational standard with UL 61010-031)
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    CSA C22.2 No. 60950-1 : 2007 : INC : UPD 1 : 2011 INFORMATION TECHNOLOGY EQUIPMENT - SAFETY - PART 1: GENERAL REQUIREMENTS
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    15/30322229 DC : 0 BS EN 61800-5-1:2007/AMD 1 - ADJUSTABLE SPEED ELECTRICAL POWER DRIVE SYSTEMS - PART 5-1: SAFETY REQUIREMENTS - ELECTRICAL, THERMAL AND ENERGY
    HD 630.3.1 S3:2002 LOW-VOLTAGE FUSES - PART 3-1: SUPPLEMENTARY REQUIREMENTS FOR FUSES FOR USE BY UNSKILLED PERSONS (FUSES MAINLY FOR HOUSEHOLD AND SIMILAR APPLICATIONS) - SECTIONS 1 TO 4
    EN 60146-1-1:2010 SEMICONDUCTOR CONVERTERS - GENERAL REQUIREMENTS AND LINE COMMUTATED CONVERTERS - PART 1-1: SPECIFICATION OF BASIC REQUIREMENTS
    EN 61812-1:2011 TIME RELAYS FOR INDUSTRIAL AND RESIDENTIAL USE - PART 1: REQUIREMENTS AND TESTS
    EN 61010-031:2015 SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT FOR MEASUREMENT, CONTROL AND LABORATORY USE - PART 031: SAFETY REQUIREMENTS FOR HAND-HELD PROBE ASSEMBLIES FOR ELECTRICAL MEASUREMENT AND TEST (IEC 61010-031:2015)

    Standards Referencing This Book - (Show below) - (Hide below)

    IEC 60112:2003+AMD1:2009 CSV Method for the determination of the proof and the comparative tracking indices of solid insulating materials
    IEC 60270:2000+AMD1:2015 CSV High-voltage test techniques - Partial discharge measurements
    IEC GUIDE 104:2010 The preparation of safety publications and the use of basic safety publications and group safety publications
    ISO 7864:2016 Sterile hypodermic needles for single use — Requirements and test methods
    IEC 60664-5:2007 Insulation coordination for equipment within low-voltage systems - Part 5: Comprehensive method for determining clearances and creepage distances equal to or less than 2 mm
    IEC 60664-1:2007 Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests
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