Views: 2 Author: Site Editor Publish Time: 2018-03-07 Origin: Site
1. Whether the varistor is extruded or not, the voltage of the varistor decreases obviously until it is zero;
2. Insufficient voltage resistance;
3. Transient overvoltage damage;
4. The number of overvoltage protection;
5. The surge voltage is too large, which is higher than the absorbed power;
6. Aging and failure, the leakage current is increased;
7. Working temperature nearby;
8. The current and surge are too large;
9, Has not passed the quality authentication and so on.