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... |
 |
Zinc Oxide Surge Arresters | Zinc oxide arrester, otherwise known as a metal oxide surge arrester, is an electrical device used to protect electrical equipment from overvoltage... |
 |
Lightning Arrestor Resistors | The lightning thunder resistor for homeis the core part of the lightning arrester. It uses zinc oxide as the main component, adding a small amount ... |
 |
High Voltage Surge Arresters | High voltage surge arresters, also called lightning arresters, are electrical devices designed to protect high voltage systems and equipment from v... |
 |
Medium Voltage Surge Arresters | Surge arrester medium voltageare electrical devices designed to protect electrical equipment from surges or transients that occur on medium-voltage... |
Same products
 |
15 Inch Capacitive Touch Screen Panel for Medical & Multi-Application Equipment | Seller: SEMIJEI TECHNOLOGY LTD | 15 Inch Capacitive Touch Screen Panel for Medical & Multi-Application Equipment 15 Inch Ca... |
 |
Custom Size 11.6 Inch Circular Shape Touch Screen With ILITEK Controller | Seller: SEMIJEI TECHNOLOGY LTD | Custom Size 11.6 Inch Circular Shape Touch Screen With ILITEK Controller Semijei-Tech's11.6 in... |
 |
10.6 Inch Custom Shape Touch Screen With Multi-Touch for Commercial Systems | Seller: SEMIJEI TECHNOLOGY LTD | Semijei-Tech's10.6 inch custom shape touch screenis a projected capacitive touch panel develope... |
 |
Semijei-Tech's 10.1 inch | Seller: SEMIJEI TECHNOLOGY LTD | Semijei-Tech's10.1 inch waterproof mirror glass multi-touch panelcombines projected capacitive ... |
 |
7" I²C Glove Touch Capacitive Touch Panel | Seller: SEMIJEI TECHNOLOGY LTD | 7" I²C Glove Touch Capacitive Touch Panel 7 Inch Glove Touch Capacitive Touch Panelfor In... |
