• BS 223:1985

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.


    Available format(s):  Hardcopy, PDF

    Superseded date:  15-09-1996

    Language(s):  English

    Published date:  01-01-1985

    Publisher:  British Standards Institution

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

    Committees responsible
    Section one: General
    1. Scope
    Section two: Definitions
    2. Definitions
    Section three: Ratings
    3. Standard values of nominal voltage (UN)
    4. Standard values of rated current (IN)
    5. Standard values of rated thermal short-time
         current (Ith)
    6. Standard value of rated dynamic current (Id)
    7. Minimum withstand values of cantilever load
    8. Angle of mounting
    9. Minimum nominal specific creepage distance
    10. Temperature limits
    11. Standard insulation levels
    12. Maximum values of capacitance and dielectric
         dissipation factor of the test tap on transformer
    Section four: Information to be furnished when ordering
    and markings
    13. Enumeration of characteristics
    14. Markings
    Section five: Operating conditions
    15. Temporary overvoltages
    16. Altitude
    17. Temperature of ambient air and immersion media
    Section six: Test requirements
    18. General
    19. Test classification
    20. Condition of the bushings during the dielectric
         and thermal tests
    Section seven: Type tests
    21. Wet power-frequency voltage withstand test
    22. Dry lightning impulse voltage withstand test
    23. Dry or wet switching impulse voltage withstand test
    24. Thermal stability test
    25. Temperature-rise test
    26. Thermal short-time current withstand test
    27. Dynamic current withstand test
    28. Cantilever load withstand test
    29. Tightness test on liquid-filled and liquid-
         insulated bushings
    Section eight: Routine tests
    30. Measurement of the dielectric dissipation factor
         (tan delta) and the capacitance at ambient
    31. Dry power-frequency voltage withstand test
    32. Measurement of the partial discharge quantity
    33. Tests of the tap insulation
    34. Pressure test of gas-filled and gas-insulated
    35. Tightness test on liquid-filled and liquid-
         insulated bushings
    36. Tightness test on gas-filled, gas-insulated and
         gas-immersed bushings
    37. Tightness test at the flange or other fixing device
    I. Standard insulation levels for nominal voltages
         lower than 300 kV
    II. Standard insulation levels for nominal voltages
         equal to or higher than 300 kV
    III. List of drypower-frequency withstand test voltages
         to be applied in the test according to clause 31
         for nominal voltages higher than or equal to 300 kV
    1. Arrangement for thermal and dynamic current
         withstand tests according to clauses 26 and 27

    Abstract - (Show below) - (Hide below)

    Describes bushings, intended for use in electrical apparatus, transformers, and installations, for three-phase alternating current systems above 1000 V between 15 Hz and 60 Hz. Not applicable to bushings for use with rectifiers, rotating machines, testing transformers, or to terminals for power cables. Not applicable to insulating structures similar to bushings, which are used as support insulators inside metal-enclosed switchgear for voltages above 72.5 kV.

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

    Committee PEL/70
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By

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

    IEC 60270:2000+AMD1:2015 CSV High-voltage test techniques - Partial discharge measurements
    IEC 60076-5:2006 Power transformers - Part 5: Ability to withstand short circuit
    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
    IEC 60354:1991 Loading guide for oil-immersed power transformers
    IEC 60060-1:2010 High-voltage test techniques - Part 1: General definitions and test requirements
    IEC 60071-1:2006+AMD1:2010 CSV Insulation co-ordination - Part 1: Definitions, principles and rules
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