ECBC Compliance for Electrical Motors
An electric motor is an electrical machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor’s magnetic field and electric current in a wire winding to generate force in the form of torque applied on the motor’s shaft.
Motors shall comply with the following:
(a) Three-phase induction motors shall conform to Indian Standard (IS) 12615 and shall fulfil the following efficiency requirements:
i. ECBC Buildings shall have motors of IE 2 (high efficiency) class or a higher class
ii. ECBC+ Buildings shall have IE 3 (premium efficiency) class motors or higher class
iii. SuperECBC Buildings shall have IE 4 (super premium efficiency) class motors
(b) All permanently wired polyphase motors of 0.375 kW or more serving the building and expected to operate more than 1,500 hours per year and all permanently wired polyphase motors of 50kW or more serving the building and expected to operate more than 500 hour per year, shall have a minimum acceptable nominal full load motor efficiency not less than levels specified in the latest version of IS 12615.
(c) Motors of horsepower differing from those listed in the table shall have efficiency greater than that of the next listed kW motor.
(d) Motor horsepower ratings shall not exceed 20% of the calculated maximum load being served.
Electric motor requirements can be accessed in IS 12615-2011 for detailed specifications.