• BS EN 60664-1:2007 (published 2007-08)

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    Insulation coordination for equipment within low-voltage systems Principles, requirements and tests

    Available format(s):  Hardcopy, PDF

    Superseded date:  27-07-2020

    Language(s):  English

    Published date:  31-08-2007

    Publisher:  British Standards Institution

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

    1 Scope and object
    2 Normative references
    3 Terms and definitions
    4 Basis for insulation coordination
       4.1 General
       4.2 Insulation coordination with regard to voltage
            4.2.1 General
            4.2.2 Insulation coordination with regard to
                   long-term a.c. or d.c. voltages
            4.2.3 Insulation coordination with regard to transient
                   overvoltage
            4.2.4 Insulation coordination with regard to recurring
                   peak voltage
            4.2.5 Insulation coordination with regard to temporary
                   overvoltage
            4.2.6 Insulation coordination with regard to environmental
                   conditions
       4.3 Voltages and voltage ratings
            4.3.1 General
            4.3.2 Determination of voltage for long-term stresses
            4.3.3 Determination of rated impulse voltage
            4.3.4 Determination of recurring peak voltage
            4.3.5 Determination of temporary overvoltage
       4.4 Frequency
       4.5 Time under voltage stress
       4.6 Pollution
            4.6.1 General
            4.6.2 Degrees of pollution in the micro-environment
            4.6.3 Conditions of conductive pollution
       4.7 Information supplied with the equipment
       4.8 Insulating material
            4.8.1 Comparative tracking index (CTI)
            4.8.2 Electric strength characteristics
            4.8.3 Thermal characteristics
            4.8.4 Mechanical and chemical characteristics
    5 Requirements and dimensioning rules
       5.1 Dimensioning of clearances
            5.1.1 General
            5.1.2 Dimensioning criteria
            5.1.3 Electric field conditions
            5.1.4 Altitude
            5.1.5 Dimensioning of clearances of functional
                   insulation
            5.1.6 Dimensioning of clearances of basic, supplementary
                   and reinforced insulation
            5.1.7 Isolating distances
       5.2 Dimensioning of creepage distances
            5.2.1 General
            5.2.2 Influencing factors
            5.2.3 Dimensioning of creepage distances of functional
                   insulation
            5.2.4 Dimensioning of creepage distances of basic,
                   supplementary and reinforced insulation
            5.2.5 Reduction of creepage distances with the use
                   of a rib (ribs)
       5.3 Requirements for design of solid insulation
            5.3.1 General
            5.3.2 Stresses
            5.3.3 Requirements
    6 Tests and measurements
       6.1 Tests
            6.1.1 General
            6.1.2 Test for verification of clearances
            6.1.3 Tests for the verification of solid insulation
            6.1.4 Performing dielectric tests on complete equipment
            6.1.5 Other tests
            6.1.6 Measurement accuracy of test parameters
       6.2 Measurement of creepage distances and clearances
    Annex A (informative) Basic data on withstand characteristics of
                            clearances
    Annex B (informative) Nominal voltages of supply systems for
                            different modes of overvoltage control
    Annex C (normative) Partial discharge test methods
    Annex D (informative) Additional information on partial discharge
                            test methods
    Annex E (informative) Comparison of creepage distances specified
                            in Table F.4 and clearances in Table A.1
    Annex F (normative) Tables
    Annex ZA (normative) Normative references to international
                            publications with their corresponding
                            European publications
    Bibliography

    Abstract - (Show below) - (Hide below)

    Defines 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. It also deals with insulation coordination for equipment within low-voltage systems. Applies to equipment for use up to 2000 m above sea level having a rated voltage up to a.c. 1000 V with rated frequencies up to 30 kHz, or a rated voltage up to d.c. 1500 V.

    Scope - (Show below) - (Hide below)

    IEC 60664-1:2007 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 voltage 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 not 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.
    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 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 insulation
    - 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 test methods' from a former technical report, Type 2 (now called TS), to a normative Annex C. It has the status of a horizontal standard in accordance with IEC Guide 104.

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

    Committee GEL/109
    Development Note Supersedes BS 7822-1(1995) Supersedes 99/245121 DC. (06/2003) Supersedes 04/30111838 DC. (08/2007)
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By
    Supersedes

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

    08/30147373 DC : DRAFT AUG 2008 BS 8488-1 - PRE-FABRICATED WIRING SYSTEMS INTENDED FOR PERMANENT CONNECTION IN FIXED INSTALLATIONS - PART 1: SPECIFICATION
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    BS 4177(1992) : 1992 SPECIFICATION FOR COOKER CONTROL UNITS
    15/30297238 DC : 0 BS 1363-4 - 13 A PLUGS, SOCKET-OUTLETS, ADAPTORS AND CONNECTION UNITS - PART 4: SPECIFICATION FOR 13 A FUSED CONNECTION UNITS SWITCHED AND UNSWITCHED
    09/30202852 DC : 0 BS 5733 - GENERAL REQUIREMENTS FOR ELECTRICAL ACCESSORIES - SPECIFICATION
    BS 1363-1:2016+A1:2018 13 A PLUGS, SOCKET-OUTLETS, ADAPTORS AND CONNECTION UNITS - PART 1: SPECIFICATION FOR REWIRABLE AND NON-REWIRABLE 13 A FUSED PLUGS
    ENA ER G83/2 : ISSUE 2 2012 RECOMMENDATIONS FOR THE CONNECTION OF TYPE TESTED SMALL-SCALE EMBEDDED GENERATORS (UP TO 16A PER PHASE) IN PARALLEL WITH LOW-VOLTAGE DISTRIBUTION SYSTEMS
    BS 7288:2016 (published 2016-11) Specification for residual current devices with or without overcurrent protection for socket-outlets for household and similar uses
    15/30297236 DC : 0 BS 1363-3 - 13 A PLUGS, SOCKET-OUTLETS, ADAPTORS AND CONNECTION UNITS - PART 3: SPECIFICATION FOR ADAPTORS
    16/30337150 DC : 0 BS 7288 - SPECIFICATION FOR RESIDUAL CURRENT DEVICES WITH OR WITHOUT OVERCURRENT PROTECTION FOR SOCKET-OUTLETS FOR HOUSEHOLD AND SIMILAR USES
    BS 8488(2009) : 2009 PREFABRICATED WIRING SYSTEMS INTENDED FOR PERMANENT CONNECTION IN FIXED INSTALLATIONS - SPECIFICATION
    BS 8488-1(2009) : 2009 PREFABRICATED WIRING SYSTEMS INTENDED FOR PERMANENT CONNECTION IN FIXED INSTALLATIONS - PART 1: SPECIFICATION
    15/30297240 DC : 0 BS 1363-5 - 13 A PLUGS, SOCKET-OUTLETS, ADAPTORS AND CONNECTION UNITS - PART 5: SPECIFICATION FOR FUSED CONVERSION PLUGS
    BS 1363-1(1995) : 1995 13 A PLUGS, SOCKET-OUTLETS, ADAPTORS AND CONNECTION UNITS - PART 1: SPECIFICATION FOR REWIRABLE AND NON-REWIRABLE 13 A FUSED PLUGS
    07/30160901 DC : DRAFT MAR 2007 BS 4177 AMD 4 - SPECIFICATION FOR COOKER CONTROL UNITS
    BS 1363-5:2008 13 A PLUGS, SOCKET-OUTLETS, ADAPTORS AND CONNECTION UNITS - PART 5: SPECIFICATION FOR FUSED CONVERSION PLUGS
    BS 1363-2(1995) : 1995 13 A PLUGS, SOCKET-OUTLETS, ADAPTORS AND CONNECTION UNITS - PART 2: SPECIFICATION FOR 13 A SWITCHED AND UNSWITCHED SOCKET-OUTLETS
    BS 1363-3(1995) : 1995 13 A PLUGS, SOCKET-OUTLETS, ADAPTORS AND CONNECTION UNITS - PART 3: SPECIFICATION FOR ADAPTORS
    BS 1363-4(1995) : 1995 13 A PLUGS, SOCKET-OUTLETS, ADAPTORS AND CONNECTION UNITS - PART 4: SPECIFICATION FOR 13 A FUSED CONNECTION UNITS SWITCHED AND UNSWITCHED
    BS 7671(2008) : 2018 REQUIREMENTS FOR ELECTRICAL INSTALLATIONS - IET WIRING REGULATIONS
    BS 7671(2008) : 2008 REQUIREMENTS FOR ELECTRICAL INSTALLATIONS - IET WIRING REGULATIONS
    BS 5733(2010) : 2010 GENERAL REQUIREMENTS FOR ELECTRICAL ACCESSORIES - SPECIFICATION
    15/30297232 DC : 0 BS 1363-1 - 13 A PLUGS, SOCKET-OUTLETS, ADAPTORS AND CONNECTION UNITS - PART 1: SPECIFICATION FOR REWIRABLE AND NON-REWIRABLE 13 A FUSED PLUGS
    BS 7671(2008) : 2018 REQUIREMENTS FOR ELECTRICAL INSTALLATIONS - IET WIRING REGULATIONS
    BS 5733(2010) : 2010 GENERAL REQUIREMENTS FOR ELECTRICAL ACCESSORIES - SPECIFICATION
    BS 7671(2008) : 2008 REQUIREMENTS FOR ELECTRICAL INSTALLATIONS - IET WIRING REGULATIONS

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

    IEC 60243-1:2013 Electric strength of insulating materials - Test methods - Part 1: Tests at power frequencies
    IEC 60112:2003+AMD1:2009 CSV METHOD FOR THE DETERMINATION OF THE PROOF AND THE COMPARATIVE TRACKING INDICES OF SOLID INSULATING MATERIALS
    IEC 60038:2009 IEC standard voltages
    IEC 60270:2000+AMD1:2015 CSV High-voltage test techniques - Partial discharge measurements
    IEC 60664-4:2005 Insulation coordination for equipment within low-voltage systems - Part 4: Consideration of high-frequency voltage stress
    IEC 60068-1:2013 Environmental testing - Part 1: General and guidance
    EN 60085:2008 ELECTRICAL INSULATION - THERMAL EVALUATION AND DESIGNATION
    IEC 60050-151:2001 International Electrotechnical Vocabulary (IEV) - Part 151: Electrical and magnetic devices
    EN 60068-2-2:2007 ENVIRONMENTAL TESTING - PART 2-2: TESTS - TEST B: DRY HEAT
    EN 60068-1:2014 ENVIRONMENTAL TESTING - PART 1: GENERAL AND GUIDANCE (IEC 60068-1:2013)
    IEC 60050-212:2010 International Electrotechnical Vocabulary (IEV) - Part 212: Electrical insulating solids, liquids and gases
    EN 60099-1:1994/A1:1999 SURGE ARRESTERS - PART 1: NON-LINEAR RESISTOR TYPE GAPPED SURGE ARRESTERS FOR A.C. SYSTEMS
    HD 472 S1:1989/AC:2013 NOMINAL VOLTAGES FOR LOW-VOLTAGE PUBLIC ELECTRICITY SUPPLY SYSTEMS
    EN 60270:2001/A1:2016 HIGH-VOLTAGE TEST TECHNIQUES - PARTIAL DISCHARGE MEASUREMENTS (IEC 60270:2000/A1:2015)
    EN 60112 : 2003 AMD 1 2009 METHOD FOR THE DETERMINATION OF THE PROOF AND THE COMPARATIVE TRACKING INDICES OF SOLID INSULATING MATERIALS
    IEC 60085:2007 ELECTRICAL INSULATION - THERMAL EVALUATION AND DESIGNATION
    IEC 61180-2:1994 HIGH-VOLTAGE TEST TECHNIQUES FOR LOW-VOLTAGE EQUIPMENT - PART 2: TEST EQUIPMENT
    IEC 60529:1989+AMD1:1999+AMD2:2013 CSV Degrees of protection provided by enclosures (IP Code)
    IEC 60364-4-44:2007+AMD1:2015 CSV Low-voltage electrical installations - Part 4-44: Protection for safety - Protection against voltage disturbances and electromagnetic disturbances
    IEC 60099-1:1991+AMD1:1999 CSV Surge arresters - Part 1: Non-linear resistor type gapped surge arresters for a.c. systems
    IEC GUIDE 104:2010 The preparation of safety publications and the use of basic safety publications and group safety publications
    IEC 60068-2-2:2007 Environmental testing - Part 2-2: Tests - Test B: Dry heat
    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
    EN 60243-1:2013 ELECTRIC STRENGTH OF INSULATING MATERIALS - TEST METHODS - PART 1: TESTS AT POWER FREQUENCIES (IEC 60243-1:2013)
    EN 60068-2-78:2013 ENVIRONMENTAL TESTING - PART 2-78: TESTS - TEST CAB: DAMP HEAT, STEADY STATE (IEC 60068-2-78:2012)
    IEC 60050-826:2004 International Electrotechnical Vocabulary (IEV) - Part 826: Electrical installations
    ISO/IEC Guide 2:2004 Standardization and related activities General vocabulary
    EN 61140:2016 PROTECTION AGAINST ELECTRIC SHOCK - COMMON ASPECTS FOR INSTALLATION AND EQUIPMENT (IEC 61140:2016)
    IEC 61180-1:1992 High-voltage test techniques for low voltage equipment - Part 1: Definitions, test and procedure requirements
    EN 60664-4:2006/corrigendum:2006 INSULATION COORDINATION FOR EQUIPMENT WITHIN LOW-VOLTAGE SYSTEMS - PART 4: CONSIDERATION OF HIGH-FREQUENCY VOLTAGE STRESS
    IEC 61140:2016 Protection against electric shock - Common aspects for installation and equipment
    EN 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 60068-2-14:2009 Environmental testing - Part 2-14: Tests - Test N: Change of temperature
    EN 61180-2 : 1994 HIGH-VOLTAGE TEST TECHNIQUES FOR LOW-VOLTAGE EQUIPMENT - PART 2: TEST EQUIPMENT
    EN 60068-2-14:2009 ENVIRONMENTAL TESTING - PART 2-14: TESTS - TEST N: CHANGE OF TEMPERATURE
    EN 61180-1 : 1994 HIGH-VOLTAGE TEST TECHNIQUES FOR LOW-VOLTAGE EQUIPMENT - PART 1: DEFINITIONS, TEST AND PROCEDURE REQUIREMENTS
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