Complaint
Wishpower professionally designs and manufacture the following products: composite insulators series used on HV transmission and distribution line, HDPE insulator,HDPE Pin insulator,composite insulators series used on electrified railway catenary flexible suspension section insulators used on the subway, rigid suspension insulators used on the subway, composite dry-type insulation capacitance bushing series, composite dry type transformer capacitance bushing series, composite dry type through-wall capacitance bushing series, composite housed zinc oxide arrester series, composite subway evacuation platform series, composite subway cable mounting bracket series, composite three-rail shield series used on electrified railway, composite insulation climb ladder series used on live working, high polymer interphase spacer, etc. electrical equipment.
The surge arrester which uses zinc oxide semiconductor as a resistor material, such type of arrester is known as a metal oxide surge arrester or ZnO Diverter. This arrester provides protection against all types of AC and DC over voltages. It is mainly used for over-voltage protection at all voltage levels in a power system.
1. It eliminates the risk of spark over and also the risk of shock to the system when the gaps break down.
2. It eliminates the need of voltage grading system.
3. At the normal operating condition, the leakage current in the ZnO is very low as compared to other diverters.
4. There is no power follow current in ZnO diverter.
5. It has high energy absorbing capability.
6. ZnO diverters possess high stability during and after prolonged discharge.
7. In ZnO diverter, it is possible to control the dynamic overvoltages in addition to switching surges. This results in economic insulation coordination.
