Current Limiting Fuse
Purpose and principle
RW type current-limiting fuses are used for overload and short-circuit protection of power system lines, and have large breaking capacity, so they can also be used to protect branch circuits separated from power systems, such as power supply lines on urban surfaces, industrial and mining enterprises, and agriculture. Substation feeder lines.
installation and use
1. The fuse allows horizontal or vertical installation
2. When the data of the melt tube does not match the voltage and rated current of the line, it must not be connected to the line for use.
3. After the melt tube is fused, the user can disassemble the wiring cap and replace the melt tube with the same specifications and performance requirements
RW type current-limiting fuse is composed of fuse tube, porcelain sleeve, post insulator and solid flange, etc., and the terminal caps at both ends of the fuse tube are fixed on the porcelain post and composite post by press-fitting. , the fuse tube uses a small-diameter metal wire as the fuse, and the fuse is wound on the edged core, and then filled with quartz sand with high silicon oxide content as the arc-extinguishing medium, and the copper caps at both ends are pressed with end caps , Solder firmly with tin to protect the seal. When the overload current or short-circuit current passes, the fuse will go out immediately. When the fuse is blown, the pull wire of the spring is also blown at the same time and ejected from the cartridge, which indicates that the fuse has completed its task.
