Drop-out fuse

Abstract

The invention relates to a drop-out fuse. The fuse comprises an insulator, a fuse tube, an upper electrode, a lower electrode, an installation column, a side pushing device and a clamping device; theupper electrode and the lower electrode are arranged at the two ends of the insulator; the upper electrode comprises an upper electrode connecting plate, a static contact piece, a main pressure springand a rain cove; the installation column is fixedly installed on the upper electrode connecting plate, and the fuse tube is provided with a first step, a second step and fixing protrusions; the sidepushing device is mounted on the mounting column and the acting direction points to the fuse tube; a holding and clamping device is fixedly arranged on the mounting column and slides along the fuse tube; the holding and clamping device has a closed state and an open state through matching with the first step and the second step, and the holding and clamping device is buckled with the fixed bulge when being in the closed state and is separated from the fixed bulge when being in the open state, so a windproof function is achieved, and the fuse tube can conveniently and quickly fall off to quickly cut off a circuit.

Description

technical field [0001] The invention relates to the technical field of fuses, in particular to a dropout fuse. Background technique [0002] The drop-out fuse is composed of the following parts, including an insulator and a fuse tube. The upper and lower electrodes of the insulator are respectively fixed with an upper electrode connection plate and a lower electrode connection plate. The upper electrode connection plate is fixed with a static contact piece and a rain cover in turn. , a main compression spring is set between the static contact piece and the rain shield, a bracket is fixed on the lower electrode connecting plate, a trunnion matched with the bracket and a tripper with a small spring are arranged, and a fuse is arranged in the fuse body. One end of the fuse is pressed tightly by the pressure release cap provided on the upper end of the fuse body, and the opposite end of the fuse is fixed on the lower electrode connection plate through a tripper, and the fuse is ...

AI Technical Summary

Problems solved by technology

[0004] However, in some windy areas, such as wind power plants, the fuse body may be blown off by the wind without failure due to the wind force. Additional constraints are added to the fuse body, which not only increases the difficulty of closing the operating lever, but also may prevent the fuse body from falling in the event of a real failure. Fuses that quickly cut off the circuit due to the rapid drop of the fuse tube become necessary

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