At present, the domestic research in variable frequency speed regulation system is www.dongfeng-motor.com very active, but also is not very ideal in terms of industrialization, most of the market is still dominated by foreign companies. Therefore, in order to speed up the development of variable frequency speed regulation system of our country, the needs of the international development trend of variable frequency speed regulation technology and the domestic market demand have a comprehensive understanding. The energy industry as the foundation of the national economy, for the development of society, economy and the improvement of people's living standard is very important. In the rapid growth of economic environment, China's energy industry faced with dual pressure of economic wholesalemotor.blogspot.com growth and environmental protection. The data show that, under the influence of capital, technology, energy prices, China's energy efficiency is much lower than the developed countries. Energy-intensive products of China in the 90 s energy is generally higher than in developed countries 12% to 55%, more than 90% of the energy in the mining, processing and transformation, in the course of storage and transportation and terminal diesel generators prices loss and waste.
If the energy consumption per unit GNP (tons of standard coal/thousand dollars) country (mid - 90 - s), China respectively is Switzerland, Italy, Japan, France, Germany, Britain, the United States, Canada, 14.4 times, 11.3 times, 10.6 times, 8.8 times, 8.3 times, 7.2 times, 4.6 times and 4.2 times. In 1995, China's coal-fired power plant coal consumption of 412 grams of standard coal/kWh, 1.27 times that of the international advanced level. Therefore, the effective use of energy in our country is very urgent. As one of the large energy consumption of the motor in the aspect of energy saving is a potential can be dug. Total installed capacity of 400 million kilowatts of electric motor in our country, 600 billion KWH, electricity consumption accounted for about 80% of the industrial electricity consumption. In all kinds of used motor, more than 80% for small and medium asynchronous motor motor lamination under 0.55 220 kw. Overall equipment level in motor system in China is equivalent to the level of developed countries' 50 s. Therefore, 15 plans in the country, the motor system energy saving investment up to 50 billion yuan, so the variable frequency speed regulation system in our country will have a huge market demand. The current global economic development, there are two significant interwoven lines: energy and the environment. Energy of tension is not only restricted the considerable economic growth in developing countries, also brought quite a big problem for many developed countries. Where energy concentration also tend to be the focus of the world's hot spots. And the development and utilization of energy and protecting the environment has a significant impact. Global warming, acid rain, and a series of environmental disasters are related to the development and utilization of energy.
Terminal insulation is reliable,check whether the zero line insulation layer is damaged,aging,loose contact,test grounding of cabinet put oneself in another's position,sending after cleaning dust,check www.facebook.com/dongfeng.motor the secondary loop.(3) maintenance procedures for capacitance ark: first will play to stop switch capacitance ark,then disconnect the total power switch capacitance ark,with 25 MMZ wires through the resistance by the capacitor to discharge to check and tighten the contactor,reactor,capacitor terminals,terminal control line are in good condition,the grounding device meets the requirements,contact of permanent magnet motor the file ablation and clean the tank components,then closing check discharge lamp and automatic compensation system is normal.All of the above maintenance as a result,should be written in maintenance records.
