High voltage switches and circuit breakers works similar to the general interrupter device equipped with a simple but its structure is relatively simple picture shows a high-pressure compressed air load switch their work spindle is rotated clockwise opening in the opening action of the spring On the one hand crank slider mechanism by the upward movement of the piston to compress the gas transmission system on the other hand by two four-bar linkage consisting of the main knife to open and then push the knife so that the arc interrupter contacts open compressed air cylinders When passing through the vents blow out the arc by closing the main spindle and drive the knife and the knife while clockwise arc interrupter contacts before closing the spindle continues to rotate the main contact in the closing process is then closed at the same time opening spring carve storage Because load switch can not short-circuit breaking current so often and limiting the use of high-voltage fuse together limiting the use of current-limiting fuses function not only completed the task of breaking the circuit and can significantly reduce the thermal and electrical short-circuit currents caused by Dynamic effects. When the shunt release and transfer of the current operation of the power substation with "less people on duty," "unattended" promotion, in order to meet the operational units of the basic requirements for remote operation Lanzhou load switch, load switch selection, you need to configure points Shunt trip for protection trip use, so that the load switch overload protection by way of opening Xining load switch, fuse is only for short circuit protection. By shunt release action allows the combination of electrical load switch in Chongqing breaking load switch, called the release operation. Relay and fuse time - current curve is not the same, with the use of the inevitable intersection. Protection of the operating characteristics and safety fuses - second characteristic point of intersection is called "over current." Engineering according to IEC determine the maximum over current methods are: An arc in front of the largest fuse - Timeline second feature takes a minimum load switch opening time, plus external relay protection 20ms minimum operating time, which is the current value of the corresponding The maximum transfer of current. Lanzhou load switch | Switches | Huayi electricity provided by Xian Huayi power plant. Xian Huayi power plant (www.xahy.com) strong, credible, in Xi'an high-voltage circuit breakers and other industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Huayi power and you hand into the brilliant, for a better future!