Acceleration test for small three-phase integral horsepower induction motors-techniques, limitation, and problems of the test and interpretation of the results

This paper aims at the realization of the acceleration method for the small three-phase integral horsepower induction motors as referred to IEEE standard 112-1996. Testing on the small induction motors with an increasing moment of inertia technique is proposed. The characteristic results, the current-speed and torque-speed characteristics, are presented. In addition, verification of the results, limitation, and problems of this method are also interpreted. The limitation of this method is illustrated by loss calculation performed by comparing with current data from the locked-rotor test at rated voltage. This paper presents the method to find the appropriate time for the acceleration test. Finally, the problem which presents during the test is also discussed.