The main characteristics of zinc oxide varistors and precautions

TGE mov metal oxide varistor is a zinc oxide as the main body, add a variety of metal oxides, various metal oxides classic electronic ceramics made classic electronic ceramics made of polycrystalline semiconductor ceramic element ʱ?? Because of its unique non-linear conductivity of polycrystalline semiconductor ceramic element.
 Because of its unique non-linear electrical conductivity and flow capacity, low voltage limit, fast response, Sobig and flow capacity, limiting low voltage, fast response, polarity, voltage and low temperature coefficient characteristics, widely used power, resistance, low voltage temperature coefficient, widely used in electric power, telecommunications, railways, telecommunications, chemical, petroleum and other areas set up communications facilities, railways, telecommunications, chemical, oil and other fields of facilities and equipment from momentary voltage surge damage. Prepare against momentary voltage surge damage.
 metal oxide varistor testing and protected electrical or components in parallel. When the circuit voltage surge does not appear, varistor surge work when the circuit voltage does not appear, varistors in pre-breakdown, the equivalent circuit for the grain boundary resistance is about the pre-breakdown region, etc. Validity circuit grain boundary resistance of about 10 1012 12 ~ 10 1013 13Ω / cm / cm, the varistor is high impedance, high impedance does not affect the varistor does not affect the normal operation of equipment to be protected; electric sound occurs when the circuit the normal operation of equipment to be protected; when the surge voltage circuit occurs, since the response speed is very varistor surge voltage, since the TGE varistor metal oxide fast response, it quickly turned nanosecond time.

Works zinc oxide varistor

TGE varistor metal oxide is a resistor made of zinc oxide in Taiwan is called the surge absorber, zinc oxide TGE metal oxide varistor application voltage because of the change in resistance has nonlinear way (positive and negative) also symmetry, and Can abnormal voltage response line, absorbed most of the surge / surge energy while suppressing the abnormal voltage to a safe range so that safety and stability to improve lines, and thus subject to many areas of favor.