Full-insulation closed-type load fuse

Abstract

The invention provides a full-insulation closed-type load fuse, and the fuse comprises an upper end insulating incoming wire and an external porcelain insulator. The upper end insulating incoming wire is disposed at the upper end of the external porcelain insulator. The interior of the external porcelain insulator is provided with an arc extinguishing rod, and the exterior of the external porcelain insulator is provided with a clamping ring. The clamping ring is provided with a bolt. The lower end of the interior of the external porcelain insulator is provided with a static contact end cover, and the static contact end cover is provided with a fuse tube. The lower end of the fuse tube is provided with a lower moving contact, and the bottom of the external porcelain insulator is provided with a rubber pedestal. The lower part of the fuse tube is provided with a compression spring, and a buffering spring is disposed above the compression spring. The interior of the static contact end cover is provided with a static contact part. The interior of the fuse tube is provided with a fuse, and the top of the fuse is provided with an arc shrinking rod, and the upper part of the arc shrinking rod is provided with an upper moving contact, wherein the exterior of the upper moving contact is provided with an arc extinguishing tube. The fuse reduces the arc performances, and guarantees the reliability of a product. The fuse reduces the loop resistance and temperature rise, improves the through-flow performance of the product body, optimizes the structure of the fuse tube, and greatly improves the current-carrying and breakage capabilities of the product.

Description

technical field [0001] The invention relates to the field of fuses, in particular to a fully insulated enclosed load fuse. Background technique [0002] At present, in the field of fuses, insulated fuses are often used, and ordinary insulated fuses have a large arc energy when they are disconnected due to poor coordination between the arc suppression tube and the arc suppression rod during operation, which is easy Cause fuse damage, affect the service life of the fuse, and the fuse will generate temperature when it is working, causing the temperature of the fuse itself to rise, reducing the service life of the fuse, and the fuse tube is one of the important parts of the short-circuit disconnection of the fuse First, if the quality of the fuse tube is poor, it is easy to cause the fuse to fail to work and the safety performance to decline. Therefore, it is particularly important to solve the above problems. Contents of the invention [0003] The purpose of the present inv...

AI Technical Summary

Problems solved by technology

[0002] At present, in the field of fuses, insulated fuses are often used, and ordinary insulated fuses have a large arc energy when they are disconnected due to poor coordination between the arc suppression tube and the arc suppression rod during operation, which is easy Cause fuse damage, affect the service life of the fuse, and the fuse will generate temperature when it is working, causing the temperature of the fuse itself to rise, reducing the service life of the fuse, and the fuse tube is one of the important parts of the short-circuit disconnection of the fuse First, if the quality of the fuse tube is poor, it is easy to cause the fuse to fail to work, and the safety performance will decrease

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