A Case Study of Determining Energy Efficiency in Squirrel Cage Induction Motor According to IEC 60034-2-1:2014 Standard

Efficiency and sustainability are the most important and focused issues today. Industrial systems are the main working field to reduce energy consumption because of its share in the total amount of energy. According to TSI (Turkey Statistical Institute) data, industry sector in Turkey consumed 47.1% of total electrical energy in 2013. Electric motor-based systems are the important type of electrical loads in the industry. In the European Union, these systems are estimated to account for about 70% of all industrial electricity consumption. Since 1998, the motor producers and the standard organizations are trying to classify electrical motors by efficiency with standard methods. Nowadays, in EU and the other relevant countries, the IEC standard methods are used to determine the efficiency class of the induction motors. The latest standard was published in December 2014 with the code IEC 60034-2-1. In this study, an IE3 class 22 kW 4 poles induction motor was tested and the efficiency value was calculated by using IEC 60034-2-1 standard method. And the results were evaluated according to eco-design requirements for electric motors (EU 640/2009). The study covers all tests and calculation steps clearly in this paper.