Encapsulated overvoltage protective devices capable of withstanding lightning current, limiting freewheeling and having at least one spark gap

一种保护装置、过电压的技术，应用在用于限制过电流/过电压的紧急保护电路装置、应用火花隙的过压避雷器、专用于火花隙的电路等方向，能够解决降低安全电平、TOV强度下降、不能实现保护目标等问题，达到快速而可靠点火、小滞后时间的效果

Active Publication Date: 2016-10-05
DEENSE EUROPE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Corresponding adaptations to overvoltage protection devices lead to dedicated solutions which however are not suitable for broad and more general protection objectives
By reducing the safety level, the TOV strength decreases and the probability of unplanned outages increases
Protection objectives requiring activation at or below rated voltage cannot be achieved with known solutions

Method used

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  • Encapsulated overvoltage protective devices capable of withstanding lightning current, limiting freewheeling and having at least one spark gap
  • Encapsulated overvoltage protective devices capable of withstanding lightning current, limiting freewheeling and having at least one spark gap
  • Encapsulated overvoltage protective devices capable of withstanding lightning current, limiting freewheeling and having at least one spark gap

Examples

Experimental program
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Embodiment Construction

[0057] figure 1 Shown is a basic block circuit diagram for illustrating the basic configuration of the protection device. The encapsulated spark gap 1 has a conventional ignition device 4 for transient overvoltage protection, said spark gap comprising at least two main electrodes 2 and 3 . The spark gap is ignited via an auxiliary electrode 5 connected to the ignition device 4 . The arrangement meets all requirements for conventional lightning arresters used in low-voltage networks.

[0058] Spark gap 1 can also be activated completely and independently of ignition device 4 via further ignition device 6 . Spark gap 1 can be activated by ignition device 6 likewise by means of auxiliary electrode 5 or alternatively also by means of a separate auxiliary electrode 7 .

[0059] Activation of ignition device 6 absolutely requires a signal at input 8 . In a preferred embodiment, when a signal is present at input 8 , activation of the spark gap is triggered via device 6 only in co...

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Abstract

The invention relates to an encapsulated overvoltage protection device capable of withstanding lightning currents and limiting freewheeling current, comprising at least one spark gap, each of which has at least two main electrodes and an auxiliary electrode, wherein the auxiliary The electrodes are connected to an ignition device for triggering in the event of transient overvoltages. According to the invention, a second ignition device is provided, independent of the first ignition device, which can be activated without the presence of overvoltages or pulse currents, based on the presence of a minimum voltage between the main electrodes of the spark gap spark gap.

Description

technical field [0001] The invention relates to an encapsulated, lightning-current-resistant, freewheeling-limited overvoltage protection device for low-voltage power supply systems, which has at least one spark gap with at least two main electrodes and one auxiliary electrode each, the The auxiliary electrode is connected to an ignition device for triggering in the event of a transient overvoltage. Background technique [0002] The requirements for the transient overvoltage protection of the supply network are derived from the standards (DIN EN 61643-11) and insulation coordination of connections up to terminal equipment (DIN EN 60664-1). The additional use of decentralized power supplies or local energy stores has increasingly led to increased fluctuations in the power supply during normal operation. Due to changing grid conditions, the requirements for TOV strength of overvoltage protection devices continue to increase. The transient overvoltage protection, especially i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01T2/02H01T4/16H01T15/00H02H9/06
CPCH01T2/02H02H9/041H02H9/06H02H3/08
Inventor K·比勒S·施莱特J·埃尔勒A·厄哈德特
Owner DEENSE EUROPE AG
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