Zinc Metal Oxide Varistor Disc for Surge Arresters
ZnO resistor is the core element of the lightning arrester. It mainly protects power system equipment by limiting lightning overvoltage to ensure that the line does not trip. The performance indicators of ZnO resistors mainly include potential gradient, flow capacity and nonlinear coefficient, which are determined by the formula and process on the macro level and by the "ZnO grain-boundary layer" characteristics on the micro level.
ZnO grain: it is the main body of the resistance sheet, there is a small amount of cobalt (Co), manganese (Mn) and other elements in the solid solution accounting for more than 90% of the volume, and the size is 5-15 μ m. The resistivity is 0.001-0. l Ω. m and there is a small amount of cobalt (Co), manganese (Mn) and other elements in the solid solution.
Grain boundary layer: it is the enrichment area of dopants. The resistivity under a low electric field is greater than l00M Ω. m, and it is in the conduction state under a high electric field. The grain boundary layer is the source of pressure-sensitive characteristics.
Features of zinc oxide discfor Surge Arrester
Small current area: the resistance sheet presents a high resistance value, and the current flowing is below 1mA. The ratio of the inflexion point voltage to the thickness of the resistance sheet in this area is a potential gradient.
Non-linear area: It is the working area of the resistor. The flatter the U-I curve, the higher the non-linear coefficient of the resistor; The wider the range, the better the flow capacity.
High current area: the resistance sheet may be damaged when it enters the low resistance state.
Send product request
Other supplier products
 |
Arrester Silicone Rubber | Arrestor Silicone Rubber is a type of silicone rubber designed to protect electrical systems from surges and lightning strikes. YF POWER, a leading... |
 |
Cross Arm Insulators | horizontal post insulatorare used in electrical systems to provide insulation and mechanical support to the cross arm and conductor. They are typic... |
 |
66kV Surge Arrester | When the communication cable or equipment is operating under normal operating voltage, the 66kV surge arresterwill not have an effect, and it is re... |
 |
MOV Blocks | MOV blocksare essential components for maintaining the integrity and reliability of electronic and electrical systems, as they can prevent costly d... |
 |
FPQ2W-10/3T20 10kV Pin Insulators | The crimping process of polymer pin type insulatorsshould pay attention to the crimping force, compression amount, pressing speed, holding time, et... |
Same products
 |
HM B200/B210 Series | Seller: BEIJING HIGHMESH INFORMATION TECHNOLOGY CO.,LTD. | HM B200/B210 Series USRP B200/B210 Product Overview The B200 and B210 hardwarecovers RF frequen... |
 |
HM-B210（Single-Board） | Seller: BEIJING HIGHMESH INFORMATION TECHNOLOGY CO.,LTD. | HM-B210（Single-Board） Description TheB210is a highly integrated Universal Software Radio Periph... |
 |
Busbar systems | Seller: Jinan Dema Electric Co., Ltd. | Busbar systems Busbar Systems for Plant Reliable Industrial Power Distribution Solutions for Fa... |
 |
Aluminium Cable Festoon System | Seller: Jinan Dema Electric Co., Ltd. | Aluminium Cable Festoon System The company's newly developed DM-CL Aluminium Cable Festoon Syste... |
 |
Open copperhead conductor Bar | Seller: Jinan Dema Electric Co., Ltd. | Open copperhead conductor Bar DMGH Series Open Copperhead Conductor Bar Reliable Power Supply S... |
