• SN EN 60041 : 1994

    Current The latest, up-to-date edition.

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

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    Published date:  12-01-2013

    Publisher:  Swiss Standards

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

    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

    Abstract - (Show below) - (Hide below)

    Deals with field acceptance tests of hydraulic turbines, storage pumps or pump turbines. Defines the terms and quantities which are used; specifies methods of testing and ways of measuring the quantities involved in order to ascertain hydraulic performance. Covers the arrangements for tests at the site to determine the extent to which the main contract guarantees have been satisfied. Applies to any size and type of impulse or reaction turbine, storage pump or pump turbine. Particularly applies to machines coupled to electric generators, motors or motor-generators. Applies to machines with unit power greater than 5 MW or with reference diameter greater than 3 m.

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    Document Type Standard
    Publisher Swiss Standards
    Status Current
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