China IE2 Efficiency Electric Motor
Efficient motor from the design, materials and processes to take measures, such as the use of reasonable fixed, rotor slot, fan parameters and sine winding measures to reduce consumption, efficiency can be increased by 2% - 8%, an average increase of 4%. In 2002, China's total motor capacity of about 400GW, of which nearly 80% for medium and small, annual electricity consumption 660TW = H. The average efficiency of medium and small motors is 87%, the international advanced level is 92%., and the power saving potential of China's medium and small motors is about 12TW. H.
From saving energy and protecting environment, high efficiency motor is the trend of the international development. The United States, Canada and Europe have promulgated relevant laws and regulations successively. Europe according to the motor running time, formulated by the CEMEP standard, the efficiency is divided into eff1 (highest), eff2, eff3 (minimum) three grades, from 2003-2006 years step by step implementation. The latest IEC 60034-30 standard will be divided into motor efficiency IE1 (corresponding to eff2), IE2 (corresponding to eff1), IE3, IE4 (highest) four grades. Our country promises to execute IE2 and above standards from July 1, 2011.
With China's accession to the WTO, China's motor industry is facing great pressure and challenges from the international community. From the international and domestic development trend, promote the Chinese high efficiency motor is very necessary, this is also the product development, make our country motor products to keep pace with the international development trend, but also need to promote the technological progress of industries and products for export. According to statistics, in 2002 China's motor power consumption accounted for more than 60% of the total power consumption, the power consumption of small three-phase asynchronous motor is accounted for about 35% of the power consumption, so the development of Chinese efficient motor is one of the important measures to improve energy efficiency, meet the needs of the development of our country, is very necessary.
At present, China's industrial energy consumption accounts for about 70% of the total energy consumption, of which the motor energy consumption accounts for about 60%~70% of industrial energy consumption, plus the non industrial motor energy consumption, the actual energy consumption of the motor accounts for more than 50% of the total energy consumption. Nowadays, the proportion of high-efficiency energy-saving motors is low. According to the national small and medium-sized motor quality supervision and Inspection Center for domestic key enterprises of 198 motors sampling survey, of which reached more than 2 efficient energy-saving motor only 8%. This has caused great waste to the whole society.
Institutions have done calculations, if all motor efficiency increased by 5%, then the annual savings of 76 billion 500 million kwh of electricity, this figure close to the Three Gorges power generation in 2008. Therefore, the energy-saving motor industry development space, demand strong. On the policy side, the National Standardization Management Committee issued the mandatory standard "energy efficiency limit value and energy efficiency grade of GB 18613-2012 middle and small three-phase asynchronous motors" in 2012.