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Explosion-proof type combined over-voltage protector large in energy capacitance

An overvoltage and explosion-proof technology, which is applied in the direction of emergency protection circuit devices, emergency protection circuit devices, electrical components, etc. for limiting overcurrent/overvoltage, can solve the problem of shortened life expectancy of protectors, accelerated valve aging, Frequent action of protectors and other problems, to solve the concerns of safe operation of equipment, reduce phase-to-phase overvoltage, and achieve good voltage limiting effects

Inactive Publication Date: 2014-11-05
安徽恒凯电力保护设备有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] However, with the expansion of the system and the widespread use of cables and nonlinear loads, the operating overvoltage and resonance overvoltage are becoming more and more serious, resulting in more and more frequent protector actions, accelerated aging of the valve plate, and also made the protector's Life expectancy shortened accordingly
As a result, under other abnormal conditions such as system resonance overvoltage, the protector itself collapses, which in turn causes a phase-to-phase short circuit in the switch cabinet, which brings great economic losses to users

Method used

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  • Explosion-proof type combined over-voltage protector large in energy capacitance
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Embodiment Construction

[0019] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0020] refer to Figure 1-2 , this specific embodiment adopts the following technical solutions: a large-capacity explosion-proof composite overvoltage protector, including a base 1, a fuse 2, a zinc oxide non-linear resistor 3, a discharge gap 4 and a ceramic ring 5, and the base 1 is provided with The ceramic ring 5 is provided with a discharge gap 4 between the ceramic rings 5, and the discharge gap 4 is connected to the fuse 2 through a zinc oxide non-linear resistor 3, and a valve plate is arranged inside the ceramic ring 5. The zinc oxide non-linear resistor 3 and the discharge gap 4 are connected in series.

[0021] The three-phase combined overvoltage protector of this specific embodiment is an overvoltage protector composed of four zinc ...

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Abstract

The invention discloses an explosion-proof type combined over-voltage protector large in energy capacitance and relates to an over-voltage protector. The over-voltage protector comprises a base, a fuse wire, a zinc oxide non-linear resistor, a discharging gap and porcelain rings. The base is provided with the porcelain rings. The discharging gap is formed between the porcelain rings and connected with the fuse wire through the zinc oxide non-linear resistor. Valve plates are arranged in the porcelain rings. The zinc oxide non-linear resistor is connected with the discharging gap in series. According to the over-voltage protector, by optimizing the performance index of the over-voltage protector, the over-voltage absorbing capacitance is increased; the over-voltage protector has the additional over-voltage action counting and automatic fault separating functions, the complex periodic detection work is omitted, and engineers do not need to worry about the safe operation of equipment.

Description

technical field [0001] The invention relates to an overvoltage protector, in particular to a large-capacity explosion-proof composite overvoltage protector. Background technique [0002] The large-capacity explosion-proof compound overvoltage protector product has successfully solved the problem of equipment insulation damage caused by the operation overvoltage caused by the vacuum switch breaking due to the protection function between phases and phases. It has made great contributions to my country's electric power industry. [0003] However, with the expansion of the system and the widespread use of cables and nonlinear loads, the operating overvoltage and resonance overvoltage are becoming more and more serious, resulting in more and more frequent protector actions, accelerated aging of the valve plate, and also made the protector's Life expectancy is correspondingly shortened. As a result, under other abnormal conditions such as system resonance overvoltage, the protec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/06
Inventor 姜坛王善立
Owner 安徽恒凯电力保护设备有限公司
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