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Low-voltage current limiting rapid fuse

A low-voltage current limiting and fuse technology, which is applied in the field of transformer protection and power system generators, can solve problems that affect the safety of power equipment and unreliable breaking, and achieve stability and accuracy, stable fusing time, and protection The effect of the line

Inactive Publication Date: 2015-09-09
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on this, in view of the problem that the above-mentioned traditional low-voltage breaking equipment has unreliable breaking and affects the safety of power equipment, the present invention proposes a low-voltage current-limiting fast fuse

Method used

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Embodiment Construction

[0021] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0022] Such as figure 1 As shown, a low-voltage current-limiting fast fuse includes a first connection end 100 , a fuse body 200 , and a second connection end 300 made of copper and connected in sequence. The fuse main body 200 is arranged in a long sheet shape, and a plurality of elongated slots are evenly arranged side by side on the fuse main body 200 . The fuse body of the low-voltage current-limiting fast fuse made of copper is set in a sheet shape, and unique long slots are evenly arranged side by side on the fuse body, which can make the current distribution on the fuse body more uniform and make the fuse body The temperature distribution of the low-voltage current-limiting fast fuse is relatively gentle, which is conducive to the stability and accuracy of the low-voltage current-limiting fast fuse, so that the low-voltage current-limiting fast...

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Abstract

The invention discloses a low-voltage current limiting rapid fuse which comprises a first connecting end, a fuse body and a second connecting end; wherein the first connecting end, the fuse body and the second connecting end are made of copper and are successively connected. The fuse body is elongated and is provided with a plurality of elongated slotted holes which are transversely and uniformly arranged in parallel. The fuse body of the copper low-voltage current limiting rapid fuse is set to a sheet-shaped member. Furthermore the fuse body is provided with the elongated slotted holes which are uniformly arranged in parallel, thereby improving stability and accuracy in operation of the low-voltage current limiting rapid fuse, and realizing a good fusing characteristic. Furthermore fusing time of the low-voltage current limiting rapid fuse is stable at a low overcurrent multiple and can satisfy a national requirement.

Description

technical field [0001] The invention relates to the technical field of power system generator and transformer protection, in particular to a low-voltage current-limiting fast fuse. Background technique [0002] In the power system, low-voltage breaking devices such as dropout fuses and knife fuses are cheap and can cut off circuits more quickly than ordinary circuit breakers, so they are widely used to protect generators, transformers and other equipment. However, these traditional low-voltage breaking devices have breaking reliability problems. Especially in the case of low overcurrent multiples, the knife fuse switch often encounters early or delayed fuses during work, which seriously affects the generator. , transformers and other electrical equipment safe use. Contents of the invention [0003] Based on this, the present invention proposes a low-voltage current-limiting fast fuse in view of the problem that the above-mentioned traditional low-voltage breaking device h...

Claims

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Application Information

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IPC IPC(8): H01H85/08H01H85/044
CPCH01H85/08H01H85/044
Inventor 杨翠茹杨颖雷璟刘东霖林一峰王文轩陈忠东
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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