Comparison of standards for determining efficiency of three phase induction motors
The paper describes a set of experiments and discusses their results for determining the efficiency of low voltage, three phase squirrel cage induction motors. The measured efficiency of an induction motor directly connected to the grid, strongly depends on the method used to evaluate the results and the standard according to which the measurements are performed. Different standards as IEEE 112 and IEC 32 are mentioned and their similarities sand differences are discussed. The main discrepancies between the various standards is the way in which the values for the stray load losses are obtained at different load levels. A short description of the measurement setup is given and measurement results for motors of several manufacturers accounting for different standards are proposed. The results clearly demonstrate the necessity to handle the efficiency data given by the manufacturer with a lot of care.
- Research Organization:
- Katholieke Univ. Leuven, Heverlee (BE)
- OSTI ID:
- 20001181
- Journal Information:
- IEEE Transactions on Energy Conversion (Institute of Electrical and Electronics Engineers), Vol. 14, Issue 3; Other Information: PBD: Sep 1999; ISSN 0018-9383
- Country of Publication:
- United States
- Language:
- English
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