Outdoor low-voltage enclosed load isolation switch with power-assisted mechanisms

Abstract

The invention discloses an outdoor low-voltage closed load isolation switch with power-assisted mechanisms. The outdoor low-voltage closed load isolation switch is composed of a box body, a cover body, a fuse, two wiring terminals, two static contacts and two sets of elastic power assisting mechanisms. The outdoor low-voltage closed load isolation switch with the power-assisted mechanisms is advantaged in that all components of a disconnecting switch can be packaged in the shell, metal pieces on the disconnecting switch are protected, and the foreign matter can be effectively prevented from being connected with the disconnecting switch in an overlapped mode.

Description

technical field [0001] The invention relates to a fuse type isolating switch, in particular to an outdoor low-voltage closed load isolating switch with a booster mechanism. Background technique [0002] Low-voltage fuse isolating switch is a commonly used device in low-voltage power distribution lines. The existing low-voltage fuse isolating switch mainly has the following problems: 1) The fuse is the core component of the low-voltage fuse isolating switch. The device is made of thin copper sheet with a narrow cross-section, and most of it is exposed to the natural environment during operation, and its time-current characteristics are easy to change due to the corrosion of acid rain and other natural environments. 2) The contact knife of the existing low-voltage fuse-type isolating switch cannot realize the self-locking function. During normal operation, the contact knife is easy to be accidentally separated from the holding position, resulting in Unnecessary power outage a...

AI Technical Summary

Problems solved by technology

[0002] Low-voltage fuse isolating switch is a commonly used device in low-voltage power distribution lines. The existing low-voltage fuse isolating switch mainly has the following problems: 1) The fuse is the core component of the low-voltage fuse isolating switch. The device is made of thin copper sheet with a narrow cross-section, and most of it is exposed to the natural environment during operation, and its time-current characteristics are easy to change due to the corrosion of acid rain and other natural environments. 2) The contact knife of the existing low-voltage fuse-type isolating switch cannot realize the self-locking function. During normal operation, the contact knife is easy to be accidentally separated from the holding position, resulting in Unnecessary power outage accidents; 3) The existing low-voltage fuse-type isolating switch does not have the function of load separation, and there are potential safety hazards when repairing the line, especially for large-capacity lines, the arc generated when the low-voltage fuse-type isolating switch is on-load. Severe ablation of the contact blade or contact surface, resulting in damage to the contact blade or contact

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