Fuse type isolating switch

Abstract

The invention provides a fuse type isolating switch, which comprises a movable contact and a brass sleeve, wherein a fuse wire is arranged at the right end of the movable contact; a double-hole end current inlet wire is also arranged at the lower end of the movable contact; the right end of the double-hole end current inlet wire is also connected with a buffer washer through a wire end; buffer gaskets are arranged at two ends of the buffer washer; a static contact is fixedly arranged on the left side surface of the buffer washer; a fuse tube is fixedly arranged at the right side surface of thebuffer washer; a core iron component is embedded inside the fuse tube; the right end of the fuse tube passes through the center of an insulation plate to be connected with a reset spring arranged atthe right end of the insulation plate; and insulation media are filled at the two sides of a fused mass. The whole fuse has the characteristics that the cost is low; the structure is simple; the weight is light; the installation operation is convenient; and the outdoor environment adaptability is high, and the like. A safe operation environment is created; and the safety of overhaul personnel is enhanced.

Description

Technical field [0001] The invention relates to the technical field of electrical circuits, in particular to a fuse type isolating switch. Background technique [0002] Fuses are widely used in overhead line branch poles, pole-mounted transformers, and pole-mounted cable climbing devices. When the system and the user end fail, they can protect the system and user equipment. It is one of the important power equipment. In actual applications, the fuse device frequently fails. Some construction workers are not familiar with the fuse device and cannot install it according to the corresponding installation process requirements. For example, the fuse element of the fuse is installed too loose or the fuse element is fixed. At the same time, the fuse tails of the fuse copper wires form serious loose strands at the fixed position. The fuse causes heat at the loose strands during power-on operation, which accelerates the aging, which causes the fuse to become looser, and the fuse is not bl...

AI Technical Summary

Problems solved by technology

[0002] Fuses are widely used in overhead line branch poles, pole-mounted transformers, and pole-mounted cable climbing devices. When the system and user end fail, they can protect the system and user equipment, and are one of the important power equipment. However, , In practical applications, the fuse device frequently fails. Some construction workers are not familiar with the fuse device and cannot install it according to the corresponding installation process requirements. For example, the fuse element of the fuse is installed too loosely, or the fuse element is fixed. At the same time, the multi-strand fuse copper wire at the fuse tail will form serious loose strands at the fixed place. When the fuse is energized and running, the fuse will cause heat at the loose strands, which will accelerate aging, causing the fuse to become looser and cause the fuse to not be blown. It falls off by itself, and problems such as heating of the pouring place of the porcelain insulator caused by poor contact of the fuse are often seen, which will reduce the safety performance of the fuse and shorten the service life.

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