HY series zinc oxide lightning arrester

I. Product Overview

Composite coat metal oxide surge arresters only has the advantages of porcelain coat metal oxide surge arresters, also has a solid structure, good insulation properties, high dielectric strength, resistance to galvanic corrosion, heat aging resistance, explosion-proof performance, stain resistance and other characteristics . The company has selected metal oxide valve flow capacity, excellent performance, long life, high voltage characteristics, widely used in power generation, transmission, substation, distribution, and other fields of electrical equipment from overvoltage harm. Performance in line with GB11032-2000, IEC60099-4 standards.

Second, the basic principle

MOA is currently the most advanced over-voltage protection. Because of its core components using zinc oxide varistor, compared with traditional silicon carbide arrester, improved voltage characteristics arresters, over-voltage increases the flow capacity, leading to fundamental changes in the arrester characteristics.

When the arrester in the normal operating voltage, the current flowing through the arrester only microampere level, when subjected to over-voltage, since the zinc oxide nonlinear resistor, the current flowing through the arrester moment thousands of times over, surge arresters in the conduction state the release of over-voltage energy, which effectively limits the over-voltage power transmission equipment violations.

Conditions of use

● ambient temperature is not higher than + 40 ℃, not lower than -40 ℃;

● altitude does not exceed 4000m;

● AC system frequency not less than 48Hz, no more than 62HZ;

● long-term applied between the terminals of the arrester frequency voltage does not exceed the arrester continuous operating voltage;

● The maximum wind speed does not exceed 35m / s;

● seismic intensity of 7 degrees and the following areas;

● dirty areas to be specified.