Product Description
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.
YF POWER, as a professional manufactuer of mov blocks, provide you with brilliant-performance zinc oxide disc. If you are in need of ZnO blocks, don't hesitate to contact us.
Features of Zinc Metal Oxide Varistor Disc for 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.
The Structure of A ZnO Zinc Oxide Resistor
The structure of a ZnO Zinc Oxide resistor typically consists of several key components:
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 ? m. The resistivity is 0.001-0. l ?. 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 ?. m, and it is in the conduction state under a high electric field. The grain boundary layer is the source of pressure-sensitive characteristics.
The combination of these components forms the fundamental structure of a ZnO resistor. This structure is designed to enable the resistor to function effectively, especially in applications related to surge protection, where it limits overvoltage and ensures the stability of electrical systems.
Applications of Zinc Metal Oxide Varistor Disc
Zinc Metal Oxide Varistor Discs, often referred to as zinc oxide discs or ZnO blocks, are versatile components with a wide array of applications in the field of electrical and electronic engineering. These specialized discs are prized for their ability to manage electrical surges and transient voltage fluctuations, making them indispensable in various scenarios. Here are some key applications of zinc oxide discs:
Surge Protection Devices: Zinc oxide discs excel in diverting and dissipating excess energy during voltage spikes or surges, shielding sensitive equipment and ensuring uninterrupted operation.
Lightning Arresters: In lightning protection systems, zinc oxide discs channel and safely ground the immense energy of lightning strikes, protecting structures and infrastructure from damage.
Power Distribution Systems: ZnO blocks are integral components in power distribution systems, including substations and transformers. They help maintain the integrity of equipment and ensure stable electricity distribution.
Consumer Electronics: In everyday devices such as televisions, computers, and home appliances, zinc oxide discs protect against voltage fluctuations, safeguarding electronics and enhancing their longevity.
Industrial Machinery: Zinc oxide discs can shield crucial components from electrical disturbances, particularly during power switching or operational phases.
Telecommunications: Telecommunication equipment relies on the surge protection provided by zinc oxide discs to maintain uninterrupted communication and data transmission.
Automotive Electronics: In the automotive industry, these discs protect vital electronic systems, such as engine control units ECUs, from voltage transients and fluctuations.
Renewable Energy Systems: Solar and wind energy systems benefit from the inclusion of zinc oxide discs to protect power inverters and control systems from voltage variations and lightning-induced surges.
Medical Equipment: Sensitive medical devices, including diagnostic and imaging equipment, depend on zinc oxide discs to ensure consistent power quality and to guard against electrical anomalies.
Railway and Transportation: Railway signaling and control systems incorporate zinc oxide discs to maintain the reliability and safety of transportation operations.
Power Quality Enhancement: Zinc oxide discs can be applied in power quality improvement systems to mitigate harmonics, stabilize voltage, and protect against transient disturbances.
Arc Suppression: In applications where electrical arcing poses risks, such as in circuit breakers and switches, zinc oxide discs assist in suppressing arcs and
