EN 16480:2016

European foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Minimum Required Efficiencies and Minimum
  Efficiency Index
5 Determination of the Efficiency of a Test Pump
6 Proving the Minimum Efficiency Index of a pump
  size
7 Verification of the Minimum Efficiency Index for a
  pump size
Annex A (normative) - Pump types in scope
Annex B (informative) - General remarks on the efficiency
        of rotodynamic pumps
Annex C (informative) - Mean Values of a Size Relevant for
        its Minimum Efficiency Index
Annex D (informative) - Methods recommended for manufacturers
        to determine the mean values of hydraulic quantities of
        a size relevant for MEI
Annex E (informative) - Numerical example
Annex F (informative) - Application of mathematical statistics
        on tests
Annex G (informative) - Measurement uncertainties
Annex H (informative) - Explanations concerning the methodology
        of the verification procedure and the probability of the
        results
Annex I (informative) - Reporting of Test Results
Annex ZA (informative) - Relationship between this European
         Standard and the Essential Requirements of EU Directive
         2009/125/EC, establishing a framework for the setting of
         ecodesign requirements of energy related products and
         implemented by the European Commission Regulation (EU)
         No. 547/2012
Bibliography

This European Standard specifies performance requirements (methods and procedures for testing and calculating) for determining the Minimum Efficiency Index (MEI) of rotodynamic glanded water pumps for pumping clean water, including where integrated in other products.The pump types and sizes covered by this standard are described in the Annex A. These pumps are designed and produced as duty pumps for pressures up to 16 bar for end suction pumps and up to 25 bar for multistage pumps, temperatures between -10 °C and +120 °C and 4" or 6" size for submersible multistage pumps at operating temperatures within a range of 0 °C and 90 °C.In addition, this standard specifies how the value of the Minimum Efficiency Index (MEI) of a pump size indicated by the manufacturer can be checked by market surveillance.Even if it is left free to the manufacturer of a pump size how to prove the rated value of the Minimum Efficiency Index (MEI), nevertheless this standard specifies a method to prove that this rated value meets the requirements within the confidence intervals with a sufficiently high probability.