Vacuum load switch and load switch to other types of contrast, the most prominent is breaking performance, to meet the current requirements divert and long service life. And sulfur hexafluoride load switch relatively roughly equal in this respect. They all belong to the maintenance and repair and low maintenance type of switch. As compared with the pressuring gas or gas load switch, only the price is lower than the vacuum load switch minor - some, load switch price, and other performance parameters and comparisons are vacuum load switch. Because of this, Changchun load switch, the early sixties of the last century there have been in the power system as sulfur hexafluoride and vacuum arc medium two new switches. And during the seventies - eighties, most experts believe that sulfur hexafluoride switch has an absolute advantage for 110 kV -500 kV voltage level even higher direction of development, but only applied to medium vacuum switch voltage field, according to the development trend in recent years that the vacuum switch is not only possible to develop a high voltage level, while the low voltage level development. Structure of the vacuum load switch in many forms, and as China's urban network and rural power grids, construction innovation; the current major indoor and outdoor vacuum load switch vacuum load switch into two categories, outdoor vacuum load switch is in our country rural power grid construction and transformation developed for use in the address field of the environment in rural areas, with a unique style of architecture. Vacuum load switch is characterized by light weight, small size, without a strong sound and light phenomenon in the process of breaking current, air pressure-load switch, vacuum interrupter contact with a copper tungsten alloy material selenium or tellurium copper iron and greatly reduce the cutoff value and strengthen the anti-welding capability, its mechanical life and electrical life greatly exceeds the normal load switch, can reach more than 2,000 times the number of operations. Within N12-12D / 630-20 type indoor AC high voltage load switch is rated voltage 12KV, rated frequency 50HZ three-phase high-voltage switchgear for the division and load current, loop current, no-load transformer and cable charging current, short-circuit current. Equipped with grounding switch load switch that can withstand short-circuit current load switch factory direct _ _ Changchun Xi'an high load switch provided by Xian Huayi power plant. Xian Huayi Electric Power Equipment Factory (www.xahy.com) quality of service and products, continue to receive the recognition and trust of new and old customers and the industry. Our company is a certified member of the whole alliance network operators, business alliance customer service icon on the page, you can talk directly with our customer service staff, to our future cooperation happy!