• SN EN 60137 : 2003

    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

    INSULATED BUSHINGS FOR ALTERNATING VOLTAGES ABOVE 1000 V

    Available format(s): 

    Withdrawn date:  01-10-2011

    Language(s): 

    Published date:  13-01-2013

    Publisher:  Swiss Standards

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

    FOREWORD
    INTRODUCTION
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Ratings
       4.1 Standard values of highest voltage for equipment (U[m])
       4.2 Standard values of rated current (I[r])
       4.3 Standard values of rated thermal short-time current
            (I[th])
       4.4 Standard values of rated dynamic current (I[d])
       4.5 Minimum withstand values of cantilever load
       4.6 Angle of mounting
       4.7 Minimum nominal creepage distance
       4.8 Temperature limits and temperature rise
       4.9 Standard insulation levels
       4.10 Test tap on transformer bushings
    5 Operating conditions
       5.1 Temporary overvoltages
       5.2 Altitude
       5.3 Temperature of ambient air and immersion media
       5.4 Seismic conditions
    6 Ordering information and markings
       6.1 Enumeration of characteristics
       6.2 Markings
    7 Test requirements
       7.1 General requirements
       7.2 Test classification
       7.3 Condition of bushings during dielectric and thermal
            tests
    8 Type tests
       8.1 Dry or wet power-frequency voltage withstand test
       8.2 Dry lightning impulse voltage withstand test (BIL)
       8.3 Dry or wet switching impulse voltage withstand test
            (SIL)
       8.4 Thermal stability test
       8.5 Temperature rise test
       8.6 Verification of thermal short-time current withstand
       8.7 Cantilever load withstand test
       8.8 Tightness test on liquid-filled, compound-filled and
            liquid-insulated bushings
       8.9 Internal pressure test on gas-filled, gas-insulated
            and gas-impregnated bushings
       8.10 External pressure test on partly or completely
            gas-immersed bushings
       8.11 Verification of dimensions
    9 Routine tests
       9.1 Measurement of dielectric dissipation factor (tan delta)
            and capacitance at ambient temperature
       9.2 Dry lightning impulse voltage withstand test (BIL)
       9.3 Dry power-frequency voltage withstand test
       9.4 Measurement of partial discharge quantity
       9.5 Tests of tap insulation
       9.6 Internal pressure test on gas-filled, gas-insulated
            and gas-impregnated bushings
       9.7 Tightness test on liquid-filled, compound-filled and
            liquid-insulated bushings
       9.8 Tightness test on gas-filled, gas-insulated and
            gas-impregnated bushings
       9.9 Tightness test at the flange or other fixing device
       9.10 Visual inspection and dimensional check
    10 Requirements and tests for bushings of highest voltages for
       equipment equal to or less than 52 kV made of ceramic, glass
       or inorganic materials, resin or combined insulation
       10.1 Temperature requirements
       10.2 Level of immersion medium
       10.3 Markings
       10.4 Test requirements
    Annex ZA (normative) Normative references to international
        publications with their corresponding European publications
    Bibliography

    Abstract - (Show below) - (Hide below)

    Specifies characteristics and tests for insulated bushings. Applies to bushings intended for use in electrical apparatus, machinery, transformers, switchgear and installations for three-phase alternating current systems, with rated voltages above 1000 V and power-frequencies of 15 Hz up to and including 60 Hz.

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

    Document Type Standard
    Publisher Swiss Standards
    Status Withdrawn
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