In the field of industrial control, control appliances in accordance with the working voltage, AC 1200V, DC 1500V as the boundary, divided into two categories of high-voltage control appliances and low-voltage control appliances. Circuit breakers, fuses, contactors, starters, solenoids solenoid valve resistors, relays and so on belong to the low-voltage electrical appliances. Low-voltage electrical appliances are the basic components of the complete sets of electrical equipment, which are widely used in the fields of industry, agriculture, transportation, national defense and so on, and they provide the reliability of the low-voltage power supply system.
Low-voltage appliances in China has more than 50 years of development history, with the development of economic construction, low-voltage appliances from the introduction of digestion and then innovation, each step is particularly critical.
According to relevant statistics, in 2011 China's low-voltage electrical sales increased by 15% compared with 2010, the annual production and sales growth of enterprises accounted for about 75% of the industry as a whole, and many outstanding enterprises in the industry production and sales growth of more than 30%.
In terms of exports, the coastal regions develop relatively fast, especially in Wenzhou, the most prevalent, according to the export value to calculate, Guangdong Province is far ahead, in 2011, the top exports of low-voltage electrical appliances were 2.67 billion U.S. dollars in Guangdong, Zhejiang, 790 million U.S. dollars, Shanghai 630 million U.S. dollars, the three together up to the total exports of low-voltage electrical appliances of 79%.
Affected by the cost of raw materials, labor costs rising pressure, industry competition is becoming more intense, less competitive, poor cost control ability of enterprise profitability to varying degrees of decline.
"Twelfth Five-Year Plan" will be China's low-voltage electrical industry rebound, to achieve technological breakthroughs in a good opportunity for the market demand has brought the spring breeze of growth, but it also makes many large foreign enterprises to increase investment in the field of low-voltage electrical appliances, and in the development of high-end products at the same time, but also into the low-end market in China, resulting in intra-industry competition More intense.
Analysts said that the development of low-voltage electrical industry opportunities and crises co-exist, but the idea of the crisis is always guiding China's low-voltage electrical enterprises to move forward, in the competition for survival, innovation is always the topic, but also the key to competition.
Circuit breaker as a member of the low-voltage electrical appliances, led by the trend of intellectualization, towards the high-end route, the domestic circuit breaker enterprises have also seized the "innovation" and "intelligent" the two key words, and actively increase the technical investment in product development, to create a proprietary Independent products. The LW-252 sulfur hexafluoride circuit breaker independently developed by the technology center of Henan Pinggao Group has broken the technological monopoly of multinational companies in this field in China for a long time.
This circuit breaker has a double-acting arc extinguishing chamber relying on exquisite mechanical cooperation, realizing the true sense of the dynamic and static contacts two-way linkage, greatly reducing the requirements for the operation function, is the future direction of the development of the sulfur hexafluoride circuit breaker, and for the future structure optimization of the circuit breaker for a higher voltage level, as well as with the miniaturization of the hydraulic mechanism and with the spring mechanism to lay a solid foundation.
From the smart grid to the new energy industry, from the electric power industry to the petrochemical industry, the application of low-voltage electrical appliances in China's industrial sector across a number of levels, from the initial simple assembly to today's intelligent products, which also means that the future of the low-voltage electrical industry will meet a more comprehensive intelligent change.
Domestic low-voltage electrical enterprises should stop the embarrassing and tragic price war, play the advantages of localization, down-to-earth products, improve the level of technology, to meet the market reshuffle period, think more about how to stand in the reshuffle, how to strengthen the key market, integration of resources, through the product mix, design, technical content, and service model to change the fate.