【文章內(nèi)容簡介】 ion equipment in the secondary power supply system overvoltage sensors lightning protection may be two (B, C level) for the protection of segregation. Bmine use is generally greater flow capacity of the mine installations, the Lightning could be more casual Liuxie people, to achieve the objective of current limit, overvoltage at the same time will reduce to a certain extent, cmine use With lower residual pressure of the mine installations, you can loop in the remaining scattered lightning Liuxie people, to limit the purpose of overvoltage, overvoltage equipment can be reduced to the level of tolerance. The main power supply system is inhibited lightning protection and operation of the power back to the road and overvoltage surge. According to the substation status of the substation of the second minesensing system and the operation and use of two overvoltage protection. As build more substations in the region more open, relatively strong electromagnetic strength, power lines and munication cables are very vulnerable to lightning attacks sensors, sensors along the overvoltage power lines and munication lines into one device, which will damage equipment, Therefore, the exchange of firstclass bus to install the power protection (B level) is to ensure the safety of the entire control room, and 80 percent of the overvoltage China, scattered to the earth, play a primary role in the protection, but are still in the exchange of feeder Some of the Blevel power supply voltage and mine the residual pressure increases online and must therefore be important in the exchange of feeder lines (DC charging screen, UPS, etc.) clevel power protection, which would curb overvoltage electrical equipment to backend To the level of tolerance.Protective location: It is 1 EC1312 (LEMP protection in the region of lightning protection principles. Arrester installation should be in different locations at the junction of protected areas, this network, the firstclass protection should be located in the bus exchange. In Two on the bus with the installation of a Bclass models of a threephase power supply voltage surge protector. Install Location: AC bus (cabinet). For the more important feeder lines on the exchange of equipment, here for the DC charge screen, the installation of clevel threephase power arrester. As DC charging screen is twoway exchange of electricity supply, so the screen in the DC charge with the installation of two models of clevel threephase power supply overvoltage surge protector. Installation location should choose the DC charge screen open exchange of air power Commissioner Office. integrated automation system overvoltage protection Protective position: Computerbased integrated automation system39。s ability to bear a very low voltage, several hundred volts of overvoltage is enough to damage the equipment, so must the high side arrester the residual pressure (thousands of volts) to further curb to meet equipment Insulation level of need, and because of the potential rise to power and the induction loop is also overvoltage line up on KV, to be used in the exchange of integrated automation system to the exchange on the clevel singlephase installation of a surge Voltage protection. Location should choose to install automatedping in the Composite Air switch the AC power. did not ask off power supplies (UPS) overvoltage protection Protection here: because of the internal puter systems, hubs, monitoring equipment, electric energy billing systems and so on through the UPS power supply protection, in order to protect the safety of these microelectronics equipment, the UPS powe