Fireproof surge protection device and filling method thereof

A technology of surge protector and filling method, applied in the direction of emergency protection circuit device for limiting overcurrent/overvoltage, emergency protection circuit device, electrical components, etc., capable of solving failure of surge protector and blocking tripping mechanism Action execution and other issues, to achieve the effect of long endurance time and low measured temperature

Pending Publication Date: 2018-06-29
广东立信防雷科技有限公司
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  • Abstract
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Problems solved by technology

The current surge protector uses flame-retardant plastic as the shell, and the interior is filled with electrical resin. However, in actual statistics, there are still a small number of surge protectors that fail to ignite other substances. The main reason is that the heat conduction of the varistor is not as designed. The heat conduction is carried out in the same way, or during the conduction process, the shape of the product is blocked by the action execution of the tripping mechanism due to heat deformation

Method used

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  • Fireproof surge protection device and filling method thereof
  • Fireproof surge protection device and filling method thereof

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Embodiment Construction

[0019] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0020] For the filling structure of the fireproof surge protector of the present invention, please refer to figure 1 and figure 2 The protective element 1 of the fire-proof surge protector is installed inside the shell 2 of the fire-proof surge protector; the inside of the shell 2 is mainly filled with fine sand with a particle size range of 0.1-2mm, and the protective element 1 The outer six sides of the heating element are filled, and the filling thickness is greater than 1mm. Therefore, the average particle size of the fine sand is 0.1-2 mm, and the thickness of the fine sand covering the pie...

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Abstract

The invention discloses a fireproof surge protection device and a filling method thereof. The fireproof surge protection device comprises a shell and a piezoresistor mounted in the shell, wherein finesand fills the shell and coats the piezoresistor. The fireproof surge protection device has the beneficial effects that heat of the piezoresistor is prevented from being transferred outwards to strive for much action time for action of a tripping mechanism. Experimental result shows that compared with universal electrical resin, the fireproof surge protection device filled with the fine sand as afilling material is longer in endurance time. Under a same test condition, the surface temperature of the shell is lower at the same time.

Description

technical field [0001] The invention relates to a surge protector, in particular to a fireproof surge protector filled with fine sand and a filling method thereof. Background technique [0002] The failure mode of the varistor, the core component of the surge protector, is heating until burning. According to the current testing specification, the surge protector must be equipped with an appropriate tripping mechanism, and under the action of the experimental current, the mechanism will act within 5 seconds to disconnect the surge protector from the grid. During this period, the surge protector can be damaged, but no open flames can occur. , igniting other objects. The current surge protector uses flame-retardant plastic as the shell, and the interior is filled with electrical resin. However, in actual statistics, there are still a small number of surge protectors that fail to ignite other substances. The main reason is that the heat conduction of the varistor is not as desi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/04
CPCH02H9/044
Inventor 何梓聪何知侠刘苗苗陈伟
Owner 广东立信防雷科技有限公司
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