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industrial electric motor efficiency

The ratio of the output power to the input power of an asynchronous motor. It is usually expressed as a percentage.

The efficiency of asynchronous motor is usually 75%-92%. There are many factors that affect the efficiency of the motor, the fundamental reason is the internal consumption: efficiency = (input power loss power) / input power.


High efficiency motor is a general standard type motor with high efficiency. Generally, measures are taken from design, material and technology, such as adopting reasonable measures of stator and rotor slots, fan parameters and sinusoidal windings to reduce losses, and the efficiency can be increased by 2% - 8%, increasing by an average of 4%.


In order to save energy and protect the environment, high efficiency motor is the current international trend of development. The United States, Canada and Europe have promulgated relevant laws and regulations. In Europe, according to the running time of the motor, the CEMEP standard is divided into three levels of eff1 (highest), eff2, and eff3 (the lowest).


China has committed to the implementation of IE2 and above standards since July 1, 2011. With China's entry into the WTO, the great competition pressure and challenge of the international community in China's motor industry are becoming more and more serious. From the perspective of international and domestic development trend, it is very necessary to popularize China's high efficiency motors, which is also the requirement of product development, making our motor products keep up with the international trend of development, and also help to promote the technological progress and product export of the industry.


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