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.
Отправить запрос, связаться с поставщиком
Другие товары поставщика
 |
MOV Blocks | MOV blocksare essential components for maintaining the integrity and reliability of electronic and electrical systems, as they can prevent costly d... |
 |
Railway Insulators | railway composite insulatorsare a critical component in ensuring the safety and operational efficiency of railway systems. These insulators are spe... |
 |
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 ... |
 |
Pin Insulators | Pin insulators are electrical insulators used to support low- and medium-voltage power lines. They are typically made of glass or porcelain materia... |
 |
Medium Voltage Surge Arresters | Surge arrester medium voltageare electrical devices designed to protect electrical equipment from surges or transients that occur on medium-voltage... |
Похожие товары
 |
CSD16301Q2 TRANSISTOR MOSFET N-CH 25V 6SON TEXAS INSTRUMENTS | Продавец: ZK Electronic Technology Co., Limited | Part Number:CSD16301Q2 Description:CSD16301Q2 TRANSISTOR MOSFET N-CH 25V 6SON TEXAS INSTRUMENTS ... |
 |
Конденсатор EEF-CX0J101R PANASONIC SMD SPEC полимер 100UF 6,3v SMD LF | Продавец: ZK Electronic Technology Co., Limited | Part name:EEF-CX0J101R Description:CAPACITOR EEF-CX0J101R PANASONIC SMD SPEC POLYMER 100UF 6.3V ... |
 |
Heavy Copper PCB Manufacturer | Продавец: Xinfeng Huihe Circuits Co., Ltd. | Heavy Copper PCB, pcb fabrication up to 12oz, large current, pcb circuitfabrication base material... |
 |
8 Layer ENIG Half Hole Custom PCB | Продавец: Xinfeng Huihe Circuits Co., Ltd. | Number of layers: 8 Surface finish: ENIG Base material: FR4 Outer Layer W/S: 4/3mil Inner lay... |
 |
4 Layer ENIG Impedance Control Half Hole PCB Electric Circuit Board | Продавец: Xinfeng Huihe Circuits Co., Ltd. | Number of layers: 4 Surface finish: ENIG Base material: FR4 Outer Layer W/S: 6/4mil Inner lay... |
