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  • BS 7844-1:1996

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    Three-phase dry-type distribution transformers 50 Hz, from 100 to 2500 kVA with highest voltage for equipment not exceeding 36 kV General requirements and requirements for transformers with highest voltage for equipment not exceeding 24 kV

    Available format(s):  Hardcopy, PDF

    Superseded date:  31-07-2011

    Language(s):  English

    Published date:  15-08-1996

    Publisher:  British Standards Institution

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

    Foreword
    1 General
    1.1 Scope
    1.2 Object
    1.3 Compliance with current Harmonization Documents
    2 Electrical characteristics
    2.1 Rated power
    2.2 Highest voltages for equipment of windings
    2.3 Rated voltages of windings
    2.4 Tappings
    2.5 Connections
    2.6 Dimensioning of neutral connection of the low-voltage
         winding
    2.7 Losses, sound power level and impedance voltage
    2.8 Partial discharge
    2.9 Insulation levels and dielectric tests
    3 Design requirements
    3.1 Environmental and climatic classes
    3.2 Fire behaviour classes
    3.3 Terminals
    3.4 Enclosures
    4 Dimensional characteristics
    4.1 Dimensions and rollers
    5 Accessories
    Annexes
    A (informative) National deviations
    B (normative) Normative references

    Abstract - (Show below) - (Hide below)

    Applies to transformers for continuous service and with natural ventilation. The maximum secondary voltage is 1,1 kV.

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    Committee PEL/14
    Development Note Supersedes 91/18822 DC (10/2005) Reviewed and confirmed by BSI, January 2008. (12/2007)
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By

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

    BS 7844-2:1996 Three-phase dry-type distribution transformers 50 Hz, from 100 to 2500 kVA with highest voltage for equipment not exceeding 36 kV Supplementary requirements for transformers with highest voltage for equipment equal to 36 kV

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

    IEC TR 60616:1978 Terminal and tapping markings for power transformers
    BS 7697:1993 Nominal voltages for low voltage public electricity supply systems
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