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Surge protection device with circuit breaking device

A technology of surge protector and circuit breaking device, which is applied in the direction of circuit device, emergency protection circuit device, and protection reacting to overcurrent, etc., and can solve fire accidents, thermal breakdown of surge protector, and failure of surge protector and other issues to achieve safe release and ensure safe operation

Inactive Publication Date: 2019-12-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] These two forms of circuit breakers do not have the function of automatic closing, and many problems have occurred in actual operation: for example, the circuit breakers connected in series on the surge protector are disconnected because they cannot withstand the lightning impact, resulting in the failure of the surge protector; or When a circuit breaker with a large flow rate is selected, it cannot be disconnected under power frequency current, which will cause thermal breakdown of the surge protector and even cause a fire accident
[0008] It can be seen that there is currently a lack of a reliable surge protector with a circuit breaker that is easy to install and use.

Method used

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  • Surge protection device with circuit breaking device
  • Surge protection device with circuit breaking device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] to combine figure 1 As shown, a surge protector with a circuit breaker includes a controller 1 , an automatic reclosing module 2 , a surge suppressor 3 and a current detector 4 . in:

[0034] The controller 1 can adopt a commonly used programmable controller to realize the control of other components.

[0035] The auto-reclosing module 2 , the surge suppressor 3 and the current detector 4 are sequentially connected through wires, and a current discharge path is formed through the auto-reclosing module 2 , the surge suppressor 3 and the current detector 4 .

[0036] Through the above-mentioned current discharge path, discharge of lightning current can be realized. In addition, when the power frequency current flows through and the discharge current exceeds the rated current value, the automatic reclosing module 2 realizes opening to ensure the safe operation of the equipment.

[0037] The automatic reclosing module 2 and the current detector 4 are respectively connect...

Embodiment 2

[0055] Embodiment 2 describes a surge protector with a circuit breaking device. The surge protector is different from the above embodiment 1 except for the following technical features, and other technical features can refer to the above embodiment 1.

[0056] The surge protector in Embodiment 2 also includes an indicator light a for displaying closing information and an indicator light b for displaying opening information, which is convenient for displaying closing and opening state information.

[0057] After the controller 1 sends an opening or closing command to the automatic reclosing module 2, the corresponding indicator light is turned on at the same time.

Embodiment 3

[0059] This embodiment 3 also refers to a surge protector with a circuit breaker. Except for the following technical features of the surge protector, which are different from the above-mentioned embodiment 1 or 2, other technical features can refer to the above-mentioned embodiment 1 or 2.

[0060]The surge protector in Embodiment 3 also includes an indicator light c for indicating lightning current and an indicator light d for indicating power frequency current, so as to display whether lightning current or power frequency current passes through.

[0061] After the current detector 4 measures and analyzes that the current flowing through the surge protector is a lightning current or a power frequency current, it is uploaded to the controller 1 in time, and the controller 1 controls the corresponding indicator light to light up.

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Abstract

The invention discloses a surge protection device (SPD) with a circuit breaking device. The SPD comprises a controller, an auto-reclosing module, a surge suppressor and a current detector, wherein theauto-reclosing module, the surge suppressor and the current detector are connected successively through wires, and form a current discharge path; the auto-reclosing module and the current detector are connected to and controlled by the controller. The SPD of the present invention can safely discharge lightning current when a lightning strike occurs, can be quickly turned off when a power-frequency current discharge value exceeds a rated current value, is turned on after being turned off, and contributes to the safe operation of equipment.

Description

technical field [0001] The invention relates to a surge protector, in particular to a surge protector with a circuit breaking device. Background technique [0002] The voltage-limiting surge protector is a thermal breakdown product that is prone to aging. Frequent lightning and overvoltage can cause the internal power frequency leakage current to gradually increase, and eventually thermal breakdown occurs. [0003] In order to reduce the above-mentioned faults of the voltage-limiting surge protector, the standard requires that a circuit breaker be connected in series with the voltage-limiting surge protector to prevent and reduce the occurrence of illegal power-off accidents caused by damage to the surge protector. [0004] At present, the conventional surge protector does not have a circuit breaker, and a circuit breaker needs to be connected in series after the surge protector. This method is not only cumbersome to install, but also takes up the space of the surge protecto...

Claims

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Application Information

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IPC IPC(8): H02H9/04H02H3/02H02H3/08H02H3/06
CPCH02H3/025H02H3/066H02H3/08H02H9/041
Inventor 刘璇高剑张长秀刘宝全毕晓蕾姜辉刘娟
Owner CHINA PETROLEUM & CHEM CORP