Mov metal oxide varistor

The structural characteristics of the varistor varistor metal oxide different from ordinary resistor, which is based on nonlinear characteristics of semiconductor material made of
Ohm's law to comply with ordinary resistor, and varistor voltage and current is nonlinear relationship was special. When applied across the varistor voltage is lower than the nominal rated voltage, resistance value varistors approaches infinity, almost no current flows through the interior. When the voltage across the TGE Metal Oxide Varistors(MOV) slightly higher than the nominal rated voltage, the varistor will quickly breakdown conduction by a High Performance Varistor state to a low resistance state, current also increases dramatically.

metal oxide varister

Innovative elements: Zinc Oxide blocks for high performance requirements, system studies functional powder type, size, density, surface condition, surface treatment, surface area and powder activity of the influence of the resistance properties, the successful development of sensitive resistance high-performance composite particles. The product is uniformly mixed with zinc oxide, after pressing and sintering can effectively improve the performance of varistors, reached the advanced level of developed countries today.
Benefit Analysis: Zinc Oxide discs and surge arresters have important applications in the field of transmission and distribution engineering and construction of power grids, subway rail transportation, military and civilian communications facilities, the development of high performance metal oxide varister and surge arresters is significant .

High Performance Varistor

High Performance Varistor and surge arrester varistor high performance requirements, system studies functional powder type, size, density, surface condition, surface treatment, surface area and powder activity of the influence of the resistance performance, success develop efficient varistor composite particles.
Second, the specific description:
1. Application: metal oxide varistors and surge arresters manufacturing enterprises.
2, the technical indicators: application to high-performance anti-corona resistance, surge voltage insulation coating material, its performance over similar foreign products; applied to large current insulating coating material, such as zinc oxide insulating layer side valve D3 with ordinary Composite arrester valve side insulation coating compared to the 4 / 10μs standard indicators of the impact of high current 65 ~ 70kA, more than GB11032-2000 standard (45kA), and reached the international IEC-60099-4 standard (65kA).

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Varistor is a voltage

Varistor is a voltage limiting protection devices. Nonlinear characteristic use varistors, when an overvoltage occurs between two poles varistor varistor voltage can be clamped to a relatively fixed voltage value, metal oxide arrester in order to achieve protection of the post-stage circuit. The main parameters of mov metal oxide varistor are: varistor voltage, current capacity, junction capacitance and response time.

mov metal oxide varistor

TGE Mov varistor is a non-linear voltage characteristics of the resistance of the device is mainly used in the voltage clamp circuit withstand over-voltage, absorbing excess current to protect sensitive devices. English name called "Voltage Dependent Resistor" abbreviated as "VDR", or called  mov varistor. Varistor resistive material is a semiconductor, so it is a variety of semiconductor resistor. "Zinc oxide" Now a lot of use of (ZnO) varistor metal oxide, its main material divalent element zinc (Zn) and hexavalent elemental oxygen (O) of the composition. So from the point of view of materials, the zinc oxide  High voltage varistor is a "Ⅱ-Ⅵ family-oxide semiconductor." In China Taiwan, varistors called "surge absorber", sometimes also referred to as "electric shocks (surge) suppressor (absorber)."

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