An arc-extinguishing current-limiting fuse using epoxy resin insulating porcelain bottle

Abstract

The invention discloses an arc-extinguishing type current-limiting fuse using an epoxy resin porcelain insulator, aiming at providing a current-limiting fuse with a good arc extinguishing effect, a good insulating property, and simple and convenient maintenance. The arc-extinguishing type current-limiting fuse using the epoxy resin porcelain insulator comprises a left porcelain insulator and a right porcelain insulator, wherein a left fuse tube is arranged inside the left porcelain insulator; a right fuse tube is arranged inside the right porcelain insulator; fuse wires are arranged in both the left fuse tube and the right fuse tube; one end of the left porcelain insulator and one end of the right porcelain insulator are connected through a fastening flange; one end of the fastening flange is connected to a rod-shaped support post; one end of the left fuse tube and one end of the right fuse tube are in mutual connection while the other ends thereof are connected to the left porcelain insulator and the right porcelain insulator respectively through wire connecting end caps; narrow slits are formed in the radial directions of both the left fuse tube and the right fuse tube. The arc-extinguishing type current-limiting fuse using the epoxy resin porcelain insulator functions on extinguishing electric arc generated by fusing of the fuse wire rapidly at the presence of overload or short circuit, and achieves light weight and good insulating property.

Description

technical field [0001] The invention relates to a fuse, in particular to a current-limiting fuse with the function of quickly extinguishing the arc of the fuse. Background technique [0002] A fuse is a type of overcurrent protector. The fuse is mainly composed of melt, fuse tube and external filler. When in use, connect the fuse in series in the protected circuit. When the current of the protected circuit exceeds the specified value, and after a certain period of time, the heat generated by the melt itself will fuse the fuse and disconnect the circuit, thereby protecting the fuse. effect. The electrical appliances that use metal conductors as the melt to break the circuit are connected in series in the circuit. When the overload or short-circuit current passes through the melt, the melt itself will generate heat and fuse, thus playing a role in the power system, various electrical equipment and household appliances. Certain protective effect. With anti-delay characteris...

AI Technical Summary

Problems solved by technology

[0003] However, in practical applications, when overload or short circuit occurs, a large arc will be generated when the fuse is blown, and the burning of the arc will have a negative impact on the circuit system and damage the equipment.

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