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The development of the frequency converter in China has benefited from the large-scale infrastructure construction and has driven the development of the inverter industry. On the other hand, the investment in the domestic energy conservation and environmental protection field is continuously increasing.
In recent years, China’s GDP growth has remained at a rate of 7.5%. Although it is no longer faster than before, it is still growing rapidly in the international arena. Correspondingly, the intensity of domestic economic construction is also expanding, and the consumption of energy is also rising.
In order to increase the energy festival's ability in production and construction, the inverter has been applied in many devices. In addition, China’s investment in energy conservation and environmental protection is increasing. Xie Zhenhua, deputy director of the National Development and Reform Commission, said that in order to achieve the “12th Five-Year Plan†energy saving target, China will vigorously adjust its economic and industrial structure. By 2015, the added value of energy-saving and environmental protection industries will account for about 2% of the total GDP. The output value reached 4.5 trillion yuan.
Although powerful investment in the market, in terms of professionals, there is still a certain shortage of capital investment, but it promotes the development of the inverter industry is very obvious. In the subdivided market, high-voltage frequency conversion aims at energy saving, and is mainly used in large-scale pumps and fans. Under the guidance of the National Energy Conservation and Emission Reduction Policy, high-voltage frequency conversion has seen an increase of more than 40% in recent years. The purpose of the low-voltage frequency conversion is to improve the performance of the motor, belonging to a higher level of demand, so the growth rate is stable, in recent years has maintained a 15% to 20% growth.
At the same time, there will also be some changes in the market demand and product requirements. According to the data, the transformers of S9 type and below, which originally accounted for 93% of the total in 2004, had been reduced to 14.2% by 2009. After nearly four years of promotion, the S11 model gradually increased from the original 6% to 61.3%. Zhao Yuejin told reporters that various technical data indicators of the revised content of GB20052 are the S9 type as the elimination target, S11 type as the qualified target, and S13 type and S15 type as the high-efficiency energy-saving target. According to the State Grid Data Disclosure, as of the end of 2011, the total number of distribution transformers in operation on the network was approximately 13.5 million, of which the energy-saving type of distribution transformers of type S11 and above was 2.94 million, accounting for 21.8% of the total. It can be seen that in the next few years, 78.2% of the transformers in the State Grid will need to be replaced with S11 or higher models.