The main purpose

RW, HRW, HPRW, FKR series outdoor high-voltage drop-out fuses (hereinafter referred to as "fuses") are used in power systems with AC 50Hz, voltages of 12kV and 35kV, as short-circuit, overload protection and distribution of power lines and power equipment. Combined current.

Structure

The fuse is mainly composed of two parts: an insulating bracket and a fuse tube. The static contacts are installed at both ends of the insulating bracket, and the moving contacts are installed at both ends of the fuse tube. The fuse tube consists of an inner arc suppression tube and an outer layer of phenolic Paper or epoxy glass cloth tube composition.

Use environmental conditions

a. Ambient air temperature, upper limit +40°C, lower limit -30°C
b. Altitude: ≤1000m;
c. Relative humidity: the daily average is not more than 95%, and the monthly average is not more than 90%;
d. There is no frequent violent vibration;
e. Pollution level: || level;
f. Places without fire, explosion hazards and chemical corrosion