Encapsulated surge protection device capable of carrying lightning currents and limiting follow currents and comprising at least one spark gap

A protection device and overvoltage technology, applied in emergency protection circuit devices for limiting overcurrent/overvoltage, overvoltage arresters using spark gaps, circuits dedicated to spark gaps, etc., can solve the problem of reducing safety levels, Problems such as reduced TOV strength, unsuitability for broad and more general protection objectives, etc., to achieve fast and reliable ignition, small lag time

Active Publication Date: 2015-04-08
デーンエスエープルスツェオーカーゲー
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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 surge protection device capable of carrying lightning currents and limiting follow currents and comprising at least one spark gap
  • Encapsulated surge protection device capable of carrying lightning currents and limiting follow currents and comprising at least one spark gap
  • Encapsulated surge protection device capable of carrying lightning currents and limiting follow currents and comprising 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 surge protection device capable of carrying lightning currents and limiting follow currents and comprising at least one spark gap, which has in each case at least two main electrodes and one auxiliary electrode, which is connected to a starting device for triggering in the event of transient surges. The invention provides a second starting device which is independent of the first starting device and which can activate the spark gap without the need for the presence of surges or pulse currents on the basis of the presence of a minimum voltage between the main electrodes of the spark gap.

Description

technical field [0001] The invention relates to an encapsulated, lightning-current-resistant, freewheeling-limited overvoltage protection device according to the preamble of claim 1 , having at least one spark gap with at least two main electrodes each and an auxiliary electrode connected to an ignition device for triggering in the event of a transient overvoltage. Background technique [0002] The requirements for 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 in the case of spark gaps, is therefore ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01T2/02H01T4/16H01T15/00H02H9/06
CPCH02H9/06H02H9/041H01T15/00H01T2/02H01T4/16H02H3/08
Inventor K·比勒S·施莱特J·埃尔勒A·厄哈德特
Owner デーンエスエープルスツェオーカーゲー
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