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High-security surge protection device

A surge protector, a high-safety technology, applied in emergency protection devices, high-voltage/high-current switches, protective switch operation/release mechanisms, etc., can solve problems such as non-compliance, and achieve the effect of improving safety and ensuring safety

Active Publication Date: 2013-07-10
SICHUAN ZHONGGUANG LIGHTNING PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] CN 102132467A discloses a surge arrester with at least one discharge element, although the movement of its conductor segments or conductive bridges can be encroached by its movable insulating part during or immediately before the short-circuit state of the surge arrester In order to prevent or suppress the re-ignition of the arc between the conductive element and the separation part, but when the thermal stability test is carried out according to the IEC61643.1-2005 standard, it is found that if the maximum continuous operating voltage is applied to it, the voltage flowing through the voltage arrester The current exceeds 0.5mA, which does not meet the requirements of the IEC61643-1:2005 standard

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0053] In this embodiment, the high-safety surge protector consists of housing 1 (see figure 1 ), the overvoltage protection element 3, disconnecting device 4, arc extinguishing device 5, indicating device 6 and box body 2 located in the shell (see Figure 5 )composition. The shape of the housing shell 11 is similar to a cuboid, made of nylon, and the top surface of the shell is provided with a transparent window 12 and an exhaust port 111 (see figure 1 ). The overvoltage protection element 3 is a varistor, and is provided with a first pin 311 and a second pin 312 (see Figure 7 ), the first pin 311 is connected to the first electrode 8, and the second pin 312 is connected or separated from the second electrode 7 through the disconnecting device. The box body 2 is made of nylon, one side of which is provided with a cavity for installing the voltage protection element 3, the upper right top of the other side is provided with an arc extinguishing chamber outlet 201, the upper...

Embodiment 2

[0055] In this embodiment, the high-safety surge protector consists of a casing 1 , an overvoltage protection element 3 inside the casing, a disconnection device 4 , an arc extinguishing device 5 , an indicating device 6 and a box body 2 . The difference from Embodiment 1 is that: the exhaust port 111 is arranged on the upper right side of the housing shell 11 (see figure 2 ); the outlet 201 of the arc extinguishing chamber is set on the upper right side of the box body 2 (see Figure 4 , Figure 8 , Figure 9 with Figure 10 ).

Embodiment 3

[0057] In this embodiment, the high-safety surge protector consists of a casing 1 , an overvoltage protection element 3 inside the casing, a disconnection device 4 , an arc extinguishing device 5 , an indicating device 6 and a box body 2 . The difference from Embodiment 1 is that the exhaust port 111 is arranged on the right side of the housing shell 11 (see image 3 ); the outlet 201 of the arc extinguishing chamber is set on the upper right side of the box body 2 (see Image 6 , Figure 14 , Figure 15 with Figure 16); one side of the box body 2 is provided with a cavity for installing the voltage protection element 3, the upper right side of the other side is provided with an arc extinguishing chamber outlet 201, the upper left is provided with a first limiting wall 202, and the lower left is provided with There is a third spacer wall 206, a second spacer wall 203 is provided on the lower right, a chute for installing a slider is provided on the left side of the first s...

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Abstract

A high-security surge protection device comprises an outer shell, at least one excess voltage protection element, a release device, an arc-control device and a box body. The excess voltage protection element is arranged inside the outer shell, and the release device is used for separating the excess voltage protection element from an alternating current or direct current circuit, or equipment. The arc-control device is used for extinguishing the electric arc generated in the separation process of the excess voltage protection element and the alternating current or direct current circuit, or the equipment. The release device is formed by a pressure spring, a metal spring sheet, a slider and a soft conductor. The arc-control device is formed by an arc-control chute sheet set, a first arc striking sheet, a second arc striking sheet, a rotating block and a torsional spring. The rotating block is of a strip-shaped block, an electric arc reflecting plate is arranged on one end portion of the rotating block, an installation hole is formed in the other end portion of the rotating block, and an arc-control cavity is formed in the position, close to the electric arc reflecting plate, of the rotating block. The arc-control chute sheet set is installed in an arc-control chamber surrounded by the box body and the outer shell. One end of the first arc striking sheet is connected to or close to the left end of the arc-control chute sheet set, and one end of the second arc striking sheet is connected to or close to the right end of the arc-control chute sheet set.

Description

technical field [0001] The invention belongs to protection devices for electronic and electric equipment, in particular to a surge protector. Background technique [0002] With the development of industries such as electric power and communication, the application range of surge protectors is becoming wider and wider, and the number of failures in applications is increasing. When the surge protector is degraded or overloaded, if it cannot be safely separated from the AC or DC circuit and equipment in time, accidents such as fire will occur. Therefore, the safety of the surge protector under the condition of deterioration or overload has attracted more and more attention. [0003] CN 102132467A discloses a surge arrester with at least one discharge element, although the movement of its conductor segments or conductive bridges can be encroached by its movable insulating part during or immediately before the short-circuit state of the surge arrester In order to prevent or supp...

Claims

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Application Information

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IPC IPC(8): H01H83/10H01H71/20H01H9/34
CPCH01H9/34H01H71/20H01H83/10H01H9/32H01H33/08H01H33/42H01H2223/038H01H2235/01
Inventor 李天密王雪颖王伟任怡杨国华
Owner SICHUAN ZHONGGUANG LIGHTNING PROTECTION TECH
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