Mine explosion-proof and intrinsically safe AC variable frequency speed control device for coal mine and other surrounding media containing methane and coal dust mixture of explosive gas environment is used for mine shaft three-phase motor speed adjustment and has short circuit protection , Leakage protection, insulation protection and other comprehensive protection of explosion-proof electrical equipment used in the exchange of 50Hz voltage, 1140V / (660V) total current to 380A and below the line.
Conditions of Use:
1. Altitude does not exceed 2000m.
2. Environmental medium temperature does not exceed +40 ℃, not less than -20 ℃.
3. The relative humidity of air is not more than 95% (+25 ℃).
4. No strong bumpy vibration.
5. Containing explosive methane, coal dust in the air, but not enough to corrode the metal and destroy the insulation of gas and steam.
1. Combined unitized housing for electric locomotives.
2. Flameproof housings for internal components ensure safe use in all areas downhole.
3. Power control system uses vacuum heat pipe cooling, with good cooling performance.
4. Intrinsic safety control and information feedback system.
5. Applicable to all types of mining motor.
Control motor power
Controllable motor speed
Shandong Mingdun Explosion-proof Equipment Technology Co., Ltd.predecessor of Zibo City Boshan Explosion-proof Electric Factory Co., Ltd., built in 1956, China Electrician Association explosion-proof electrical branch vice chairman unit, the National Standardization Committee of Explosion-proof electrical equipment standard committee members, the National Explosion drafting unit of electrical technical standards, the fixed-point manufacturer of mechanical and electrical equipment for China's coal industry, and the first-class supply network unit of China National Petroleum Corporation, has authorized to install and repair explosion-proof electrical equipment issued by the designated agencies of the State, especially in the production of intelligent explosion-proof electrical appliances. The company passed the ISO9001: 2000 quality system certification in 2001 and was recognized as a high-tech enterprise in 2012. The registered trademark of the company is "ZiFang" is a Famous Trademark of Shandong Province". Produced theⅠ, Ⅱ type explosion-proof electrical equipment products are issued by the state safety signs certificate, certificate of qualified explosion-proof and production licenses.
Companies registered capital of 50 million yuan, covers an area of 58 mu, plant construction area of 17,000 square meters. Processing and testing equipment more than 500 , 168 existing staff, of whom 93 were college education, engineering and technical personnel 31 people.
The company insists on scientific and technological innovation as the support, adhere to independent innovation and "turn the way, adjust the structure" concept of organic integration, then got the achievements of the high-end equipment used in coal, petroleum and chemical explosion-proof .
The company has independently developed 100% conversion rate of scientific and technological achievements, high-tech product revenue accounted for more than 80% of total sales revenue. A number of products passed the provincial scientific and technological achievements appraisal, one of the technologies in the international leading level. Mining (intelligent) backwash high-pressure filtration station, mine intelligent emulsion pump station has six invention patents, two utility model patents, one design patent, won the third prize of China Machinery Industry of Science and Technology, Shandong Province The first set of technology and equipment title, first prize of scientific and technological progress of small and medium enterprises in Shandong Province, Shandong provincial government energy-saving achievement award and Zibo city government energy-saving achievement award. The product with a number of its own independent innovation and cutting-edge processing technology, is worthy of the world's leading technology and the first series of original explosion-proof equipment title.
All products of the company's design and manufacture follow the latest IEC standards of the International Electrotechnical Commission and China GB national standards, to meet the requirements of domestic and foreign customers. With horizontal machining centers, digital hydraulic gate shears and other advanced production and processing equipment and digital integrated electrical performance test bed, emulsion pumping station experimental devices, hydraulic transmission hydrostatic testing machine and other laboratory testing equipment. Advanced equipment, superb technology, superior quality, guaranteed ZiFang brand explosion-proof electrical equipment of high quality. Company's main products are: mine intelligent emulsion pump station, mine explosion -proof and intrinsically safe AC inverter, mine flameproof and intrinsically safe emulsion pump station intelligent control device, mining (intelligent) high pressure Filtration station, explosion-proof reverse osmosis water treatment equipment, complete sets of oil drilling well field proof circuit, complete sets of offshore drilling platform explosion-proof circuit, marine explosion-proof electrical appliances, explosion-proof lamps, explosion-proof soft-start electronic control devices, explosion-proof inverter electronic control devices. At the same time, according to customer requirements, to undertake various environments and conditions of various types of explosion-proof electrical projects.