• I.S. EN 60076-11:2004

    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

    POWER TRANSFORMERS - PART 11: DRY-TYPE TRANSFORMERS

    Available format(s):  Hardcopy, PDF

    Withdrawn date:  19-09-2021

    Language(s):  English

    Published date:  01-01-2004

    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)

    FOREWORD
    1 Scope
    2 Normative references
    3 Definitions
    4 Service conditions
        4.1 General
        4.2 Normal service conditions
        4.3 Electromagnetic compatibility (EMC)
        4.4 Provision for unusual service conditions
        4.5 Transport and storage conditions
    5 Tappings
    6 Connections
    7 Ability to withstand short circuit
    8 Rating
        8.1 General
        8.2 Rated power
        8.3 Preferred values of rated power
        8.4 Operation at higher than rated voltage
        8.5 Operation with fan cooling
        8.6 Operation in an enclosure
    9 Rating plate
        9.1 Rating plate fitted to the transformer
        9.2 Rating plate fitted to the transformer enclosure
    10 Identification according to cooling method
        10.1 Identification symbols
        10.2 Arrangement of symbols
    11 Temperature-rise limits
        11.1 Normal temperature-rise limits
        11.2 Reduced temperature rises for transformers designed
             for high cooling air temperatures or special air
             cooling conditions
        11.3 High altitude temperature rise correction
    12 Insulation levels
        12.1 General
        12.2 Transformers for use at high altitudes
    13 Climatic, environmental and fire behaviour classes
        13.1 Climatic classes
        13.2 Environmental classes
        13.3 Fire behaviour classes
        13.4 Test criteria for climatic, environmental and
             fire behaviour classes
    14 General requirements for tests
    15 Measurement of winding resistance (routine test)
    16 Measurement of voltage ratio and check of phase
        displacement (routine test)
    17 Measurement of short-circuit impedance and load loss
        (routine test)
    18 Measurement of no-load loss and current (routine
        test)
    19 Separate-source AC withstand voltage test (routine
        test)
    20 Induced AC withstand voltage test (routine test)
    21 Lightning impulse test (type test)
    22 Partial discharge measurement (routine and special
        test)
        22.1 General
        22.2 Basic measuring circuit (typical only)
        22.3 Calibration of the measuring circuit
        22.4 Voltage application
        22.5 Partial discharge acceptance levels
    23 Temperature-rise test (type test)
        23.1 General
        23.2 Methods of loading
        23.3 Winding temperature-rise correction for reduced
             current
        23.4 Determination of steady state conditions
    24 Measurement of sound level (special test)
    25 Short-circuit test (special test)
    26 Environmental test (special test)
        26.1 General
        26.2 Validity of the test
        26.3 Testing procedure
    27 Climatic test (special test)
        27.1 Thermal shock test (special test)
        27.2 Validity of the test
        27.3 Thermal shock test for C1 class transformers
        27.4 Thermal shock test for C2 class transformers
    28 Fire behaviour test (special test)
        28.1 General
        28.2 Checking of corrosive and harmful gases emission
        28.3 Fire behaviour test for F1 class transformer
        28.4 Quantities to be measured and measuring devices
        28.5 Calibration of the test chamber without test
             object
        28.6 Test method
        28.7 Test report
        28.8 Criteria for evaluating the test results
    29 Tolerances
    30 Protection against direct contact
    31 Degrees of protection provided by enclosures
    32 Earthing terminal
    33 Information required with enquiry and order
    Annex A (informative) Installation and safety of dry-type
                          transformers

    Abstract - (Show below) - (Hide below)

    Applicable to dry-type power transformers (including auto-transformers) having values of highest voltage for equipment up to and including 36 kV and at least one winding operating at greater than 1,1 kV. Applies to all construction technologies.

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

    Development Note Supersedes I.S. EN 60726. (09/2004) For CENELEC adoptions of IEC publications, please check www.iec.ch to be sure that you have any corrigenda that may apply. (01/2017)
    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Withdrawn
    Supersedes

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

    IEC 60270:2000+AMD1:2015 CSV High-voltage test techniques - Partial discharge measurements
    EN 60076-5:2006 POWER TRANSFORMERS - PART 5: ABILITY TO WITHSTAND SHORT-CIRCUIT
    IEC 60076-10:2016 Power transformers - Part 10: Determination of sound levels
    IEC 60076-5:2006 Power transformers - Part 5: Ability to withstand short circuit
    EN 60270:2001/A1:2016 HIGH-VOLTAGE TEST TECHNIQUES - PARTIAL DISCHARGE MEASUREMENTS (IEC 60270:2000/A1:2015)
    IEC 60085:2007 Electrical insulation - Thermal evaluation and designation
    EN 60076-10:2016 POWER TRANSFORMERS - PART 10: DETERMINATION OF SOUND LEVELS (IEC 60076-10:2016)
    EN 61330:1996 HIGH-VOLTAGE/LOW-VOLTAGE PREFABRICATED SUBSTATIONS
    IEC 61330:1995 High-voltage/low voltage prefabricated substations
    IEC 60076-3:2013 Power transformers - Part 3: Insulation levels, dielectric tests and external clearances in air
    IEC 60529:1989+AMD1:1999+AMD2:2013 CSV Degrees of protection provided by enclosures (IP Code)
    IEC 60076-1:2011 Power transformers - Part 1: General
    EN 60076-1:2011 POWER TRANSFORMERS - PART 1: GENERAL (IEC 60076-1:2011)
    IEC 60905:1987 Loading guide for dry-type power transformers
    IEC 60076-2:2011 Power transformers - Part 2: Temperature rise for liquid-immersed transformers
    EN 60529:1991/AC:2016-12 DEGREES OF PROTECTION PROVIDED BY ENCLOSURES (IP CODE) (IEC 60529 EDITION 2.2 CORRIGENDUM 2:2015)
    EN 60076-2:2011 POWER TRANSFORMERS - PART 2: TEMPERATURE RISE FOR LIQUID-IMMERSED TRANSFORMERS
    IEC 60332-3-10:2000+AMD1:2008 CSV Tests on electric and optical fibre cables under fire conditions - Part 3-10: Test for vertical flame spread of vertically-mounted bunched wires or cables - Apparatus
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