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Device for transferring overvoltage and use thereof

A technology of overvoltage and response voltage, applied in circuits dedicated to spark gaps, overvoltage arresters with spark gaps, spark gaps with auxiliary triggering devices, etc., can solve problems such as damage to gas arresters

Active Publication Date: 2022-04-05
EPCOS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the amperage of the following current is several thousand amperes, the fuse of the power supply will work in this case, but the gas arrester will not in the case of the common current flow time of several milliseconds until the fuse operates. may be damaged

Method used

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  • Device for transferring overvoltage and use thereof
  • Device for transferring overvoltage and use thereof
  • Device for transferring overvoltage and use thereof

Examples

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Embodiment Construction

[0037] In the exemplary embodiments and figures, identical, similar or identically acting elements can be provided with the same reference signs in each case. The illustrated elements and their dimensional relationship to each other should not be considered to be to correct scale, rather, the various elements, such as layers, components, devices and regions, are drawn for better presentation and / or for better understanding. may be shown exaggerated.

[0038] exist figure 1 An embodiment of a device 100 for diverting an overvoltage is shown in . The device 100 is used in an electrical installation and / or in an electrical network, the conductors 90 of which are indicated by dashed lines. There may be more conductors than the two shown conductors 90 . For example, these conductors 90 may be part of an AC grid or a DC grid.

[0039] The device 100 has a first arrester unit 1 and a second arrester unit 2 which are connected in series between a first potential node 91 and a refe...

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PUM

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Abstract

The invention relates to a device (100) for transferring overvoltage, comprising: a first arrester unit (1) having at least one first gas-filled surge arrester (10); and a second arrester unit (2) having at least one second gas-filled surge arrester (20), the first arrester unit and the second arrester unit being connected in series to one another between a first potential node (91) and a reference potential node (99), the first surge arrester and the second surge arrester being different, the first arrester unit has a larger response voltage than the second arrester unit, and the first arrester unit has a smaller arcing voltage than the second arrester unit. The invention also relates to the use of the device (100) in an electrical system or in an electrical network.

Description

technical field [0001] A device for diverting an overvoltage is described. Also described is the use of the device in electrical installations or in power grids. Background technique [0002] In order to limit dangerous or undesired overvoltages in electrical lines and electrical installations which may be caused, for example, by lightning strikes, overvoltage protection devices in the form of surge arresters are used. These overvoltage protection devices help avoid damage to lines and equipment due to overvoltage. For example, there are gas-filled surge arresters, so-called gas arresters, in which the overvoltage is suppressed by self-ignition of the gas discharge and thus by arc discharge. An arc is formed in the arrester within a few nanoseconds after reaching the arrester response voltage, which can also be called response voltage or ignition Voltage. Due to the high current carrying capacity of this arc, the overvoltage is effectively shorted. [0003] In the case ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01T2/02H01T4/16
CPCH01T4/16H01T15/00G01R19/165H02H3/325
Inventor E·多尔施F·维尔纳
Owner EPCOS AG
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