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  • BS 7290-2(1990) : 1990 AMD 10106

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    PLASTICS FILMS FOR ELECTRICAL PURPOSES - METHODS OF TEST

    Available format(s): 

    Superseded date:  15-10-1998

    Language(s): 

    Published date:  23-11-2012

    Publisher:  British Standards Institution

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

    Committees responsible
    National foreword
    Specification
    1. General
    2. Designation
    3. General requirements
    4. Dimensions
    5. Properties
    6. Roll characteristics for all types
    Tables
    1. Nominal thickness and permitted range of thickness
    2. Property requirements for all types
    3. Property values for all types
    4. Electric strength (a.c. test) for all types
    5. Maximum permissible number of joins per roll
    6. UntitledCommittees responsible
    National foreword
    Methods
         Introduction
    1. Scope
    2. General notes on tests
    3. Thickness
    4. Density
    5. Width
    6. Windability (bias/camber and sag)
    7. Surface roughness
    8. Coefficient of friction
    9. Wetting tension (polyolefine films)
    10. Tensile properties
    11. Edge tearing resistance
    12. Tear resistance
    13. Stiffness of film
    14. Surface resistivity
    15. Volume resistivity
    16. Dissipation factor and permittivity
    17. Dissipation factor under impregnated conditions
    18. Electric strength
    19. Electrical weak spots
    20. Resistance to breakdown by surface discharges
    21. Electrolytic corrosion
    22. Melting point
    23. Dimensional change
    24. Dimensional stability under tension with rising
         temperature
    25. Dimensional stability under pressure with rising
         temperature
    26. Resistance to penetration at elevated temperature
    27. Volatile content (loss of mass on heating)
    28. Thermal endurance
    29. Burning characteristics
    30. Water absorption in a damp atmosphere
    31. Absorption of liquid
    32. Ionic impurities
    33. Effect of insulating varnishes
    34. Effect of polymerisable resinous compounds in a
         liquid state

    Abstract - (Show below) - (Hide below)

    Applicable to plastic films used for electrical purposes. Gives methods of test. Coverage includes general notes on tests, thickness, density, width, windability, surface roughness, coefficient of friction, wetting tension, tensile properties, edge tearing resistance, tear resistance, stiffness of film, surface resistivity, volume resistivity, dissipation factor and permittivity, dissipation factor under impregnated conditions, electric strength, electrical weak spots, resistance to breakdown by surface discharges, electrolytic corrosion, melting point, dimensional change, dimensional stability under tension with rising temperature and under pressure with rising temperature, resistance to penetration at elevated temperature, volatile content, thermal endurance and burning characteristics.

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

    Development Note Renumbered and superseded by BS EN 60674-2. Supersedes 89/25802 DC & 95/213981 DC. (12/2005)
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By
    Supersedes

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

    BS 7290-1(1990) : 1990 AMD 10058 PLASTIC FILMS FOR ELECTRICAL PURPOSES - DEFINITIONS AND GENERAL REQUIREMENTS
    BS EN 60674-3-3:1998 Specification for plastic films for electrical purposes. Specifications for individual materials Requirements for polycarbonate (PC) films used for electrical insulation
    BS EN 60674-3-7:1998 Specification for plastic films for electrical purposes. Specifications for individual materials Requirements for fluoroethylene-propylene (FEP) films used for electrical insulation
    BS EN 60674-1:1998 Specification for plastic films for electrical purposes Definitions and general requirements
    BS EN 60674-3-2:1998 Specification for plastic films for electrical purposes. Specifications for individual materials Requirements for balanced biaxially oriented polyethylene terephthalate (PET) films used for electrical insulation
    BS EN 60674-3-4 to 6:1995 Specification for plastic films for electrical purposes. Specifications for individual materials Requirements for polyimide films used for electrical insulation

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

    BS 5691-1:1979 Guide for the determination of thermal endurance properties of electrical insulating materials General procedures for the determination of thermal endurance properties, temperature indices and thermal endurance profiles
    BS 2782-3 Methods 326A to 326C:1977 Methods of testing plastics. Mechanical properties Determination of tensile strength and elongation of plastics films
    IEC 60212:2010 Standard conditions for use prior to and during the testing of solid electrical insulating materials
    IEC 60216-2:2005 Electrical insulating materials - Thermal endurance properties - Part 2: Determination of thermal endurance properties of electrical insulating materials - Choice of test criteria
    BS 2782-6 Method 631A:1982 Methods of testing plastics. Dimensional properties Determination of gravimetric thickness and yield of flexible sheet
    ISO 4591:1992 Plastics — Film and sheeting — Determination of average thickness of a sample, and average thickness and yield of a roll, by gravimetric techniques (gravimetric thickness)
    BS 2782-6 Method 630A:1982 Methods of testing plastics. Dimensional properties Determination of thickness by mechanical scanning of flexible sheet
    IEC 60093:1980 Methods of test for volume resistivity and surface resistivity of solid electrical insulating materials
    IEC 60589:1977 Methods of test for the determination of ionic impurities in electrical insulating materials by extraction with liquids
    IEC TR 60648:1979 Method of test for coefficients of friction of plastic film and sheeting for use as electrical insulation
    IEC 60426:2007 Electrical insulating materials - Determination of electrolytic corrosion caused by insulating materials - Test methods
    BS 5691-2:1979 Guide for the determination of thermal endurance properties of electrical insulating materials List of materials and available tests
    ISO 6883:2017 Animal and vegetable fats and oils — Determination of conventional mass per volume (litre weight in air)
    IEC 60216-1:2013 Electrical insulating materials - Thermal endurance properties - Part 1: Ageing procedures and evaluation of test results
    ISO 4593:1993 Plastics Film and sheeting Determination of thickness by mechanical scanning
    BS 2782-6 Methods 620A to 620D:1980 Methods of testing plastics. Dimensional properties Determination of density of solid plastics excluding cellular plastics (immersion method). Determination of density of solid plastics excluding cellular plastics (pyknometer method). Determination of density of solid plastics excluding cellular plastics (sink-float method). Determination of density of solid plastics excluding cellular plastics (density gradient column method)
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