1. (1) The International Electrotechnical Commission (IEC): “Rotating electrical machines-Part 30: Efficiency classes of single-speed, three-phase, cage-induction motors (IE-code)”, IEC 60034-30, Edition 1.0, pp. 3-17 (2008)
2. (2) The International Electrotechnical Commission (IEC): “Rotating electrical machines-Part31: Selection of energy-efficient motors including variable speed applications-Application guide”, IEC 60034-31, Edition 1.0, pp. 5-41 (2010)
3. (3) A. T. de Almeida, F. J. T. E. Ferreira, J. Fong, and P. Fonseca: “EuP Lot 11 Motors”, pp. 14-137 (2008)
4. (4) H. Falkner and G. Dollard: “EuP Lot 11: Circulators in buildings”, European Commission, pp. 13-137 (2008)
5. (5) P. Radgen: “EuP Lot 11 Fans for ventilation in non residential buildings Final Report”, European Commission, pp. 1-202 (2008)