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Novel outdoor high-voltage drop type fuse

A technology of drop-out fuses and fuse holders, applied in electrical components, electrothermal release switches, protective switch operation/release mechanisms, etc., can solve problems such as poor economy, achieve strength enhancement, reduce heat generation and loss, and reduce contact The effect of resistance

Inactive Publication Date: 2009-07-01
陆敏强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantage is poor economy, generally dozens of times the price of traditional fuses

Method used

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  • Novel outdoor high-voltage drop type fuse
  • Novel outdoor high-voltage drop type fuse
  • Novel outdoor high-voltage drop type fuse

Examples

Experimental program
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Effect test

Embodiment

[0014] Such as figure 1 , figure 2 As shown, this embodiment provides a new type of outdoor high-voltage drop-out fuse, which includes a fuse holder 1, a fuse carrier 3 and a lever mechanism 4, and is characterized in that the fuse holder 1 is set on the fuse holder 1 through a locking shaft pin 5. There is a locking device 2, the locking device 2 is composed of a locking plate 21 and a locking plate elastic piece 22, the locking plate 21 and the locking plate elastic piece 22 are fixedly connected, and a locking shaft pin hole 23 is provided on the locking plate 21 , the lever mechanism 4 is fixed on the fuse-carrying part 3 through a lever shaft pin 6, and the locking device 2 realizes the pressure increase and release of the contact between the fuse holder 1 and the fuse-carrying part 3 through the lever mechanism 4. The lever mechanism 4 and the locking device 2 ensure good electrical contact of the assembled fuse holder 1 and fuse carrier 3 .

[0015] In order to ensu...

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Abstract

The invention designs a new outdoor high-tension drop-type fuse which comprises a fuse base, a fuse carrier and a lever mechanism. The fuse base is provided with a locking device through a locking shaft pin, the locking device comprises a locking plate and a locking plate striking flake which is fixedly connected with the locking plate, and the locking plate is provided with a locking shaft pin hole. The lever mechanism is fixed on the fuse carrier through a lever shaft pin, and the locking device adds and reduces pressure of a contact between the fuse base and the fuse carrier through the lever mechanism. When the system has short circuit fault, the fuse carrier first disconnects to cut off an arc current, and the locking device prevents products from fusing and welding, thus the fuse carrier is safe to drop. The new outdoor high-tension drop-type fuse expands application range, ensures running quality of overhead power distribution networks, and provides the most basic short circuit protection products to overhead lines of 10kV in China, which has a breaking capability of 16kA, thereby increasing reliability of power supply.

Description

technical field [0001] The invention relates to a fuse, in particular to a novel outdoor high-voltage drop-out fuse. Background technique [0002] A fuse is a protective device that protects electrical equipment from over-short circuits. Its working principle is that when the line is short-circuited or overloaded, the melt in the fuse-carrying part of the fuse is melted to form an arc, and the arc is stretched under the action of the elastic mechanism. A very high pressure is established in the fuse-carrying part tube, and the free metal gas is ejected out of the tube to extinguish the arc, thereby breaking the short-circuit current. At the same time, the fuse-carrying part automatically falls under the action of its own weight, forming a visible isolation fracture. The development of dropout fuses in China has a history of more than 50 years. In the early days, products imitating the Soviet Union were the main products. In the later period, with the increase of introducti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/20H01H73/34H01H85/54
Inventor 陆敏强彭伯明
Owner 陆敏强
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