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surge arrester

An arrester and overvoltage technology, which is applied in the direction of spark gap overvoltage arresters, circuits, electrical components, etc., can solve the problem of damage, damage to electrical components and instruments, etc., to reduce load, small mechanical load, and eliminate subsequent The effect of current

Active Publication Date: 2018-10-12
PHOENIX CONTACT GMBH & CO KG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, in known surge arresters (for example in all gas-blown spark gaps) there is the inherent problem that ionized gases exiting the channels can damage or damage devices located in the surge arrester. electrical components and instruments directly surrounding the

Method used

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Embodiment Construction

[0031] Figures 1 to 4 shows a surge arrester 1 according to the invention, wherein, at Figure 4 An exploded view of the surge arrester 1 is shown in , so that the individual components of the surge arrester 1 can be seen. The surge arrester 1 according to the invention is especially intended for use between the neutral line N and the ground PE, so that the surge arrester 1 must have a surge current discharge capability of up to 100 kA 10 / 350 μs. In addition, it must be possible to reliably dissipate grid follow-on currents up to 100 A.

[0032] Surge arrester 1 has a cylindrical housing 2 , in the interior of which two electrodes 3 , 4 are arranged axially opposite one another. The housing 2 here is made of steel and has a cup-shaped first housing part 2a and a housing cover 2b which is screwed into the first housing part 2a. As a result, a pressure-resistant and at the same time very compact housing is provided. The two electrodes 3 , 4 delimit an arc combustion chamber...

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Abstract

The invention relates to a surge arrester (1) for use in the power supply of low-voltage networks, in particular for use between a neutral conductor N and a potential equalization means PE, comprising a cylindrical housing (2), two electrodes (3, 4) arranged axially opposite each other, and an arc chamber (5) formed inside the housing (2), wherein the arc chamber (5) is axially bounded by the two electrodes (3, 4) and a spark gap is formed between the two electrodes (3, 4) such that an arc is produced when the spark gap between the two electrodes (3, 4) is ignited. In the case of the surge arrester according to the invention, the blowing out of ionized gases can be dispensed, because two chambers (6, 7) are formed within the housing (2), each of which two chambers is connected to the arc chamber (5) by means of two channels (8, 9) such that hot ionized gas can flow from the arc chamber (5) into the chambers (6, 7) after the ignition of the spark gap, wherein the volume of the two chambers (6, 7) together is greater than the volume of the arc chamber (5) and wherein the two chambers (6, 7) are arranged on opposite sides of the arc chamber (5) in a longitudinal direction of the housing (2) and each have an axial and a radial distance from the arc chamber (5).

Description

technical field [0001] The invention relates to a surge arrester for use in the current supply of a low-voltage network, in particular for use between the neutral line N and the earth PE, with a cylindrical housing, two Axially opposite electrodes and an arc combustion chamber formed in the interior of the housing, wherein the arc combustion chamber is axially delimited by the two electrodes and a spark gap is formed between the two electrodes, so that when the spark gap is ignited An arc is generated between two electrodes. Background technique [0002] If an overvoltage occurs above the upper tolerance limit of the corresponding rated voltage, the associated devices, devices and lines must be short-circuited with earth in the shortest possible time. For this purpose, different structural elements are used depending on the location of use (protective field) and the type of instruments and installations to be protected. In this case, the individual structural elements are ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01T1/02H01T1/20H01T2/02H01T4/12
CPCH01T1/02H01T1/20H01T2/02H01T4/12
Inventor M.迪泰特T.迈尔
Owner PHOENIX CONTACT GMBH & CO KG
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