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Overvoltage protection device

A protection device and overvoltage technology, which is applied in the direction of protection, circuit devices, emergency protection circuit devices, etc. that respond to overvoltages, and can solve problems such as large installation space

Pending Publication Date: 2021-11-26
PHOENIX CONTACT GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the relative arrangement of the overvoltage protection components and the additional switches as well as the wiring for the series circuit take up considerable installation space

Method used

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  • Overvoltage protection device
  • Overvoltage protection device

Examples

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Embodiment Construction

[0070] figure 1 A first exemplary embodiment of an overvoltage protection device is shown schematically in plan view, which is designated generally by the reference numeral 100 .

[0071] The overvoltage protection device 100 includes a series circuit including an overvoltage protection component 112 and a protection switch 122 connected in series with the overvoltage protection component 112 .

[0072] The series circuit also has a thermal disconnect 114 . The thermal disconnect device 114 is designed to open or electrically disconnect the overvoltage protective component 112 preferably when the current through the overvoltage protective component 112 exceeds the fault current limit of the thermal disconnect device 114 .

[0073] The overvoltage protection device 100 also includes a monitoring unit 150 . The monitoring unit 150 is designed to detect at least one state parameter of the series circuit, and determine whether there is a fault state in the series circuit based o...

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Abstract

The invention relates to an overvoltage protection device (100). The overvoltage protection device (100) is provided with a series circuit comprising an overvoltage protection component (112) and a protection switch (122) connected in series with the overvoltage protection component (112). The overvoltage protection device (100) further comprises a monitoring unit (150) which is designed to detect at least one state parameter of the series circuit, to determine whether the series circuit has a fault state on the basis of the at least one state parameter, and to activate the protection switch (122) to be switched from a closed state to an open state if the series circuit has a fault state.

Description

technical field [0001] The invention relates to an overvoltage protection device, for example for lightning strike protection. Background technique [0002] Surge protection devices are known in the prior art, which include overvoltage protection modules, such as surge arresters (also technically known as "Surge Protection Devices" or SPDs), which have Integrated thermally activated disconnect device (referred to as thermal disconnect device for short). [0003] Under certain network conditions, there is an unprotected zone, the so-called "Blind-Zone", outside the response of the thermal disconnect device and the response of the connected pre-connected or specified pre-fuse. This means that, for example, at a certain combination of amperage and duration, the closing capacity of the thermal disconnect device may not be sufficient to reliably interrupt an occurring fault current (e.g. freewheeling of an irreversibly conductive SPD). The fault current may also be too low to t...

Claims

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Application Information

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IPC IPC(8): H02H3/04H02H3/05H02H3/10H02H3/20
CPCH02H3/042H02H3/044H02H3/05H02H3/04H02H3/20H02H3/10
Inventor 赫尔诺特·菲尼斯马库斯·菲利普
Owner PHOENIX CONTACT GMBH & CO KG
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