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    I.S. EN 50464-1:2007

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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 OIL-IMMERSED DISTRIBUTION TRANSFORMERS 50 HZ, FROM 50 KVA TO 2500 KVA WITH HIGHEST VOLTAGE FOR EQUIPMENT NOT EXCEEDING 36 KV - PART 1: GENERAL REQUIREMENTS

    Available format(s):  Hardcopy, PDF

    Superseded date:  14-07-2015

    Language(s):  English

    Published date:  01-01-2007

    Publisher:  National Standards Authority of Ireland

    For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
    Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

    Dates of withdrawal of national standards are available from NSAI.

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

    1 Scope
    2 Normative references
    3 Electrical characteristics
    4 Design requirements
    5 Accessories
    6 Efficiency and voltage drop (at reference
      temperature)
    Annex A (informative) - Capitalisation evaluation
    Bibliography

    Abstract - (Show below) - (Hide below)

    Defines transformers from 50 kVA to 2500 kVA intended for operation in three-phase distribution networks, for indoor or outdoor continuous service, 50 Hz, immersed in mineral oil, natural cooling, with two windings: - a primary (high-voltage) winding with a highest voltage for equipment from 3,6 kV to 36 kV; - a secondary (low-voltage) winding with a highest voltage for equipment not exceeding 1,1 kV.

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

    Development Note Supersedes I.S. HD 428.1 and I.S. HD 428.3. (05/2007)
    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Superseded
    Superseded By

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

    IEC TR 60616:1978 Terminal and tapping markings for power transformers
    EN 50387:2002 Busbar bushings up to 1 kV and from 1,25 kA to 5 kA, for liquid filled transformers
    EN 50386:2010/A1:2013 BUSHINGS UP TO 1 KV AND FROM 250 A TO 5 KA, FOR LIQUID FILLED TRANSFORMERS
    EN 50180:2010 Bushings above 1 kV up to 52 kV and from 250 A to 3,15 kA for liquid filled transformers – Part 1: General requirements for bushings
    EN 50181:2010 Plug-in type bushings above 1 kV up to 52 kV and from 250 A to 2,50 kA for equipment other than liquid filled transformers
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