• I.S. EN 60041:1995

    Current The latest, up-to-date edition.

    FIELD ACCEPTANCE TESTS TO DETERMINE THE HYDRAULIC PERFORMANCE OF HYDRAULIC TURBINES, STORAGE PUMPS AND PUMP-TURBINES

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-01-1995

    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
    PREFACE
    SECTION ONE - GENERAL RULES
    1. Scope and object
        1.1 Scope
        1.2 Object
        1.3 Types of machines
        1.4 Reference to IEC and ISO standards
        1.5 Excluded topics
    2. Terms, definitions, symbols and units
        2.1 General
        2.2 Units
        2.3 List of terms, definitions, symbols and units
    3. Nature and extent of hydraulic performance guarantees
        3.1 General
        3.2 Main guarantees
        3.3 Other guarantees
    4. Organisation of test
        4.1 Adequate provision for the test
        4.2 Authority for test
        4.3 Personnel
        4.4 Preparation for test
        4.5 Agreement on test procedure
        4.6 Instruments
        4.7 Observations
        4.8 Inspection after test
        4.9 Final report
    SECTION TWO - EXECUTION OF TEST FOR THE DETERMINATION OF
    THE STEADY STATE PERFORMANCE OF THE MACHINE
    5. Test conditions and procedure
        5.1 General test procedure
        5.2 Test conditions to be fulfilled
    6. Computation and analysis of results
        6.1 Computation of test results
        6.2 Uncertainties in measurements and presentation of
        results
        6.3 Comparison with guarantees
    SECTION THREE - EXECUTION OF TEST FOR THE DETERMINATION
    OF THE TRANSIENT CHARACTERISTIC OF THE MACHINE
    7. Test conditions and procedure
        7.1 Test conditions
        7.2 Test procedure and instrumentation
    8. Computation and analysis of results
        8.1 Conversion of results
        8.2 Comparison with guarantees
    SECTION FOUR - METHODS OF MEASUREMENT
    9. Introduction
        9.1 Efficiency
        9.2 Hydraulic power
        9.3 Mechanical power
    10. Discharge
        10.1 General
        10.2 Current-meter method
        10.3 Pitot tubes
        10.4 Pressure-time method
        10.5 Tracer methods
        10.6 Weirs
        10.7 Standardized differential pressure devices
        10.8 Volumetric gauging method
    11. Specific hydraulic energy of the machine
        11.1 General
        11.2 Determination of the specific hydraulic energy
        11.3 Determination of the net positive specific energy
        11.4 Pressure measurements
        11.5 Free water level measurements
        11.6 Uncertainty of measurements
    12. Power
        12.1 Indirect method of power measurement
        12.2 Direct method of power measurement
        12.3 Bearing losses
    13. Rotational speed
        13.1 General
        13.2 Speed measurements in the case of direct measurement
        of power
        13.3 Speed measurements in the case of indirect
        measurement of power
        13.4 Uncertainty of measurement
    14. Thermodynamic method for measuring efficiency
        14.1 General
        14.2 Efficiency and specific mechanical energy
        14.3 Procedure for measurement of specific mechanical
        energy
        14.4 Apparatus
        14.5 Test conditions to be fulfilled
        14.6 Corrective terms
        14.7 Uncertainty of measurement
    15. Index tests
        15.1 General
        15.2 Relative discharge measurement
        15.3 Measurement of other quantities
        15.4 Computation of results
        15.5 Uncertainty of measurement
    Appendix A - Systematic uncertainties in performance
                 measurements at steady state conditions
    Appendix B - Rejection of outliers
    Appendix C - Analysis of the random uncertainties for a
                 test at constant operating conditions
    Appendix D - Analysis of the random uncertainties for a
                 test over a range of operating conditions
    Appendix E - Physical data
    Appendix F - Derivation of the equation for the specific
                 hydraulic energy of a machine
    Appendix G - Measurement of electric power - Determination
                 of the correction for a single-phase measuring
                 system
    Appendix H - Thermodynamic method - Examples for a balance
                 of power and computation of the specific
                 mechanical energy
    Appendix J - Acoustic method of discharge measurement
    Annex ZA (normative) Other international publications quoted
    in this standard with the reference of the relevant European
    publications

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    Covers the arrangements for tests at the site to determine the extent to which the main contract guarantees have been satisfied. It contains the rules governing their conduct and prescribes measures to be taken if any phase of the tests is disputed.

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    Development Note 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 Current
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