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A protection circuit device

A technology for protection circuits and safety devices, applied in emergency protection circuit devices, circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, etc., which can solve problems such as difficulties in providing displays

Active Publication Date: 2019-08-02
PHOENIX CONTACT GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But these structural elements are also subject to the same constraints as previously stated for the arrester
In particular, it has to be determined that it is becoming more and more difficult to provide displays as the size of the structure becomes smaller

Method used

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  • A protection circuit device
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Embodiment Construction

[0043] As long as the drawings are referred to below, the same reference signs are used for the same elements. Unless otherwise specified, each of the aspects described below can be applied to all the embodiments. As long as the indefinite article is used below, it is not intended to be limited to individual elements, but the plural of elements is always also included, unless expressly stated otherwise.

[0044] Although an AC voltage system is shown in the figures described below, the circuit arrangement can also be used in a three-phase current or DC voltage system. That is, in the common circuit diagram ( figure 1 and 3 ), the notation L-N is exemplarily used. These circuits between other potentials (eg L-L, L-N, L-PE, NPE, L+-L-, L+-PE, L--PE) can also be used.

[0045] According to the protection circuit device of the present invention such as figure 1 and figure 2 Shown in has at least one surge arrester VDR1.

[0046] Furthermore, the protective circuit arrangem...

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PUM

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Abstract

The invention discloses a protective circuit device, which has an overvoltage discharger (VDR1), a thermal safety device (F2), and a current safety device (F1), wherein the thermal safety device and the current safety device are connected in series and constituting a first current branch, further comprising a heating element (R1), a first mechanically prestressed thermal isolation point (F5) in thermal connection with said heating element (R1), wherein said heating element and said second A thermal isolation point is connected in series and constitutes a second current branch, wherein the first current branch and the second current branch are connected in parallel, wherein the parallel circuit is connected to the overvoltage arrester ( VDR1 ) are connected in series, and the thermal isolation point is in mechanical effective connection with a display device.

Description

technical field [0001] The invention relates to a protection circuit device. Background technique [0002] Overvoltage protective equipment used to protect functional networks shall be equipped with isolating devices according to IEC 61643-11, paragraph 7.2.5.1. In this case, the request of the isolating device must be indicated by a corresponding status display. [0003] Various protective circuit arrangements for varistors are known from the prior art. [0004] Different types of display forms are known, such as mechanical displays by means of sliding or oscillating devices, which are thermally connected directly to the protective element and are prestressed, for example by means of springs, and for example by means of display devices, Such as LED electronic display. [0005] These displays are usually connected directly to the arrester and are activated in the event of an impermissible heating of the arrester. [0006] A disadvantage of the known mechanical displays i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H3/20
CPCH02H3/20H01H37/00H02H9/042H01C7/126
Inventor 柏格·彼得拉姆瑟尔·克里斯蒂安
Owner PHOENIX CONTACT GMBH & CO KG