1. The number of poles of IE2 motor is 2, 4, and 6. The number of poles of IE3 motors is 2, 4, 6, and 8.
2. The speed range of IE2 motor is 1000rpm to 3600rpm. The speed range of the IE3 motor is 750rpm to 3600rpm.
3. IE 2 motors are approximately 92-3% efficient, while IE3 motors are approximately 93.6% efficient. These motors can run continuously on warehouse conveyors for up to 3,500 hours a year. In this case, the more efficient IE3 motor will save approximately 1580 kWh of energy throughout the year.
4. In addition, many countries now have regulations requiring the use of IE3 motors in certain applications. For example, the European Union mandated the use of IE3 motors for motors with rated power of 7.5kW and above in 2017.
5. The benefits of upgrading to an IE3 motor don’t end there. They also last longer, which means fewer replacements and less downtime. They also run cooler than IE2 motors, which reduces maintenance costs.
6. IE3 motors generally comply with more stringent energy efficiency regulations than IE2 motors. For example, IE3 motors can meet the requirements of the International Electrotechnical Commission (IEC) 60034-30 standard, which specifies the efficiency levels of rotating electrical machines.
7. The cooling technology of IE2 motor is IC411. The cooling technologies for IE3 motors are IC411 and IC416.