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Arc-control device applied to drop-out fuse

A drop-type fuse and arc extinguishing device technology, applied in emergency protection devices, electrical components, circuits, etc., can solve problems such as large arcs, circuit system damage to equipment, etc., and achieve the effects of low cost, reduced production, and low cost.

Inactive Publication Date: 2014-04-02
广西和谐电力科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in practical applications, when overload or short circuit occurs, a large arc will be generated when the fuse is blown, and the burning of the arc will have a negative impact on the circuit system and damage the equipment.

Method used

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  • Arc-control device applied to drop-out fuse
  • Arc-control device applied to drop-out fuse

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] like figure 1 , figure 2 As shown, the present invention includes a housing 1 and a spring 2. One end of the spring 2 is fixedly connected to the housing 1, and the other end is connected to the head of the contact piece 3. The tail of the contact piece 3 is fixed to the housing 1 with a rivet. On the side wall of the housing 1 Inlaid with quartz sand block 4, the center of the quartz sand block 4 is provided with a fuse 5, and one end of the fuse 5 is connected with a screw 7.

[0024] In this embodiment, when the switch is closed, the upper ring of the fuse tube is connected to the fuse 5. Under the action of the current, the potential energy of the drop of the fuse tube is offset, and the fuse tube is in a working equilibrium state. When an overload current occurs in the circuit system or short-circuit current, the fuse 5 starts to fuse, and the arc generated during the fuse occurs in the narrow gap in the radial direction of the quartz sand block 4, and the steam ...

Embodiment 2

[0026] The difference from Embodiment 1 is that the quartz sand block 4 is provided with slits in the radial direction at the place where the fuse 5 is fixed, and the number of slits is one.

[0027] In this embodiment, the quartz sand block 4 is provided with a narrow slit in the radial direction at the place where the fuse 5 is fixed, and the narrow slit absorbs the arc with a larger area, a more reasonable position, and a better arc extinguishing effect.

Embodiment 3

[0029] The difference from Embodiment 2 is that the slit is rectangular, and the direction is parallel to the axial direction of the fuse 5 .

[0030] In this embodiment, since the slit is rectangular and its direction is parallel to the axial direction of the fuse 5, the arc caused by the blown fuse is more likely to occur in the slit, and the arc extinguishing effect is better.

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Abstract

The invention discloses an arc-control device applied to a drop-out fuse and aims to provide the arc-control device applied to the drop-out fuse which is good in arc-control effect, simple in structure and convenient to maintain. The arc-control device comprises a shell and a spring, wherein one end of the spring is fixedly connected with the shell, the other end of the spring is connected with the head part of a contact, the tail part of the contact is fixed with the shell through a rivet, the side wall of the shell is inlaid with a quartz sand block, the center of the quartz sand block is provided with a fusion wire, and one end of the fusion wire is connected with a screw. Due to the adoption of a fast arc-control design, the problem that an electric arc is generated by a fusion tube is well solved.

Description

technical field [0001] The invention relates to a fuse, in particular to a drop-out fuse with the function of quickly extinguishing the arc of the fuse. Background technique [0002] A fuse is a type of overcurrent protector. The fuse is mainly composed of melt, fuse tube and external filler. When in use, connect the fuse in series in the protected circuit. When the current of the protected circuit exceeds the specified value, and after a certain period of time, the heat generated by the melt itself will fuse the fuse and disconnect the circuit, thereby protecting the fuse. effect. The electrical appliances that use metal conductors as the melt to break the circuit are connected in series in the circuit. When the overload or short-circuit current passes through the melt, the melt itself will generate heat and fuse, thus playing a role in the power system, various electrical equipment and household appliances. Certain protective effect. With anti-delay characteristics, wh...

Claims

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Application Information

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IPC IPC(8): H01H85/54H01H85/38
Inventor 朱济伟林时华郭明光莫孝辉陈燕蓉
Owner 广西和谐电力科技有限公司
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