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Distribution fuse

A technology of fuses and melts, applied in circuits, electrical components, emergency protection devices, etc., can solve the problems of low lightning impulse withstand voltage, low power frequency withstand voltage, low mechanical strength, etc., and achieve power frequency withstand voltage Strong ability, high installation stability, and high withstand voltage

Inactive Publication Date: 2017-04-26
成都聚立汇信科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing distribution fuses have simple structure, low mechanical strength, low power frequency withstand voltage and low lightning impulse withstand voltage.

Method used

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  • Distribution fuse

Examples

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Embodiment Construction

[0015] refer to figure 1 As shown, a power distribution fuse includes a fuse tube 1, an operating ring 2, a rainproof cover 3 and an insulator 4, and the fuse tube 1, the operating ring 2 and the rainproof cover 3 are sequentially arranged from bottom to top, The operating ring 2 is provided with a locking pin 5, and the operating ring 2 is fixedly connected to the fuse tube 1 through the locking pin 5, the fuse tube 1 is provided with a melt 6, and the rainproof cover 3 A contact spring 7 and an incoming wire terminal 8 are arranged inside, and the incoming wire terminal 8, the contact spring 7 and the melt 6 are electrically connected in sequence, and a fixing bolt 9 is arranged under the incoming wire terminal 8, and the insulating Part 4 is fixedly connected with incoming line terminal 8 through fixing bolt one 9, copper bracket 10 and outgoing line terminal 11 are arranged at the lower end of said fuse tube 1, and said copper bracket 10 is provided with rotating pin 12, a...

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Abstract

Disclosed in the invention is a distribution fuse comprising a fuse tube, an operating ring, a rain-proof cover and an insulation element. The fuse tube, the operating ring, and the rain-proof cover are arranged successively from bottom to top. A locking pin is arranged at the operating ring; the operating ring is fixedly connected with the fuse tube by the locking pin; and a fusing body is arranged inside the fuse tube. A contact spring and an inlet wire terminal are arranged inside the rain-proof cover; and the inlet wire terminal, the contact spring, and the fusing body are connected successively and electrically. A fixed bolt I is arranged below the inlet wire terminal; and the insulation element is fixedly connected with the inlet wire terminal by the fixed bolt I. A cooper frame and an outlet wire terminal are arranged at the lower end of the fuse tube; a rotating pin is arranged at the copper frame; and the copper frame is connected with the fuse tube by the rotating pin. The distribution fuse that is suitable for outdoor high-voltage protection has advantages of excellent over-current protection characteristic, good power-frequency voltage-withstanding performance, good lightning-impulse voltage-withstanding performance, and high mechanical strength.

Description

technical field [0001] The invention relates to the technical field of power distribution equipment, in particular to a power distribution fuse. Background technique [0002] A fuse is an electrical appliance that fuses the fuse with the heat generated by itself and disconnects the circuit when the current exceeds the specified value. The fuse is based on the fact that after the current exceeds the specified value for a period of time, the heat generated by itself melts the melt, thereby disconnecting the circuit; a current protector made by using this principle. Fuses are widely used in high and low voltage power distribution systems and control systems, as well as electrical equipment. As short circuit and overcurrent protectors, fuses are one of the most commonly used protection devices. A metal conductor is used as a melt in series in the circuit. When an overload or short-circuit current passes through the melt, it will fuse due to its own heating, thereby breaking the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H85/20H01H85/04
CPCH01H85/20H01H85/04
Inventor 吕静
Owner 成都聚立汇信科技有限公司
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