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    • CSA C50069:99 (R2021)

    Codes & Standards - Purchase

    CSA C50069:99 (R2021)

    Welded composite enclosures of cast and wrought aluminium alloys for gas-filled high-voltage switchgear and controlgear (Adopted CENELEC EN 50 069:1991 including amendment A1:1993, with Canadian deviations)

    SKU: 2411603 Published by CSA Group Publication Year 1999 Reaffirmed in 2021 26 pages

    Product Details

    • Preface/Scope

    CSA Preface


    This is the first edition of CSA Standard CAN/CSA-C50069, Welded composite enclosures of cast and wrought aluminium alloys forgas-filled high-voltage switchgear and controlgear, which is an adoption, with Canadian deviations, of the identically titled CENELEC (European Committee for Electrotechnical Standardization) Standard EN 50069:1991 (1991-02) including Amendment Al:1993.


    CSA Standards are developed through the dedication of time by Committee members and by financial support through sales of Standards and through voluntary contributions. Major funding in support of the consensus process for this Standard was provided by the Canadian Electricity Association (CEA), whose assistance is acknowledged with thanks.


    This Standard was reviewed for Canadian adoption by the CSA Technical Committee on Switchgear and Controlgear under the jurisdiction of the Standards Steering Committee on Electrical Engineering and has been formally approved by the Technical Committee. A list of the members of these Committees is available upon request. This Standard has been approved as a National Standard of Canada by the Standards Council of Canada.


    Scope and Field of Application


    2.1 Type of Equipment


    This Standard applies to welded composite enclosures of cast and wrought aluminium and aluminium alloy enclosures pressurized with dry air, inert gases, eg, sulphur hexafluoride, carbon tetrafluoride, or nitrogen or a mixture of such gases, used in indoor or outdoor installations of high-voltage switchgear and controlgear, where the gas is used principally for its dielectric and/or arc-quenching properties, with rated voltages


    (a) 1 kV and up to and including 52 kV and with gas-filled compartments with design pressure greater than 3 bar (gauge); and


    (b) 72.5 kV and above.


    The enclosures comprise parts of electrical equipment not necessarily limited to the following examples:


    - Circuit-breakers;


    - Switch-disconnectors;


    - Disconnectors;


    - Earthing switches;


    - Current transformers;


    - Voltage transformers;


    - Surge arresters;


    - Busbars and connections.


    The scope covers also pressurized components such as the centre-chamber of live tank switchgear and controlgear, gas-insulated current transformers, etc.


    2.2 Production


    The production of the enclosures shall be in accordance with documented welding procedures which shall be carried out by well trained and supervised welding personnel. Where international standards (ISO or CEN) are not available, National Standards may be used.


    NOTE - This standard will be revised as soon as possible when ISO or CEN standards covering the various aspects are available.


    2.3 Quality Assurance


    It is the intention of this standard, that the switchgear manufacturer shall be responsible for achieving and maintaining a consistent and adequate quality of product.


    Sufficient examinations shall be made by the enclosure manufacturer to ensure that the materials, production and testing comply in all respects with the requirements of this standard and ISO 6213:1983. Inspection by the user's inspectors shall not absolve the switchgear manufacturer from his responsibility to exercise such quality assurance procedures as to ensure that the requirements and the intent of this standard are satisfied.


    NOTE - The manufacturer should have a quality assurance program registered to the applicable ISO 9000 series Standards.


    Canadian Deviations are included in this Standard.


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