Patent
Overvoltage protection apparatus with monitoring function
Durth Rainer,Pförtner Steffen +1 more
TLDR
In this article, an overvoltage protection apparatus with monitoring function having a parallel circuit of two branch circuits is presented, where the first branch circuit has a first OV protection device and a second overvoltages protection device that are connected in series.Abstract:
The object of the invention is an overvoltage protection apparatus with monitoring function having a parallel circuit of two branch circuits, wherein the first branch circuit has a first overvoltage protection device and a second overvoltage protection device that are connected in series, wherein the second branch circuit has a third device and a fourth device that are connected in series, wherein the first overvoltage device and the third device have a first shared voltage potential during operation, and wherein the second overvoltage device and the fourth device have a second shared voltage potential during operation, wherein a first measuring tap is provided between the first overvoltage protection device and the second overvoltage protection device and wherein a second measuring tap is provided between the third device and the fourth device, with a signal being derived from the voltage between the first measuring tap and the second measuring tap that provides state information in relation to the first overvoltage protection device and the second overvoltage protection deviceread more
Citations
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Patent
Ground fault minimization
Isaac S. Frampton,Adam Larson +1 more
TL;DR: In this article, a circuit for minimizing energy provided to a ground fault includes a source, a multiple switches, an output filter, and a controller, which is configured to generate a switch signal for the switches for a minimum energy state of the output filter and in response to the ground fault signal.
Patent
Robust inverter topology
Isaac S. Frampton,Adam Larson +1 more
TL;DR: An inverter system includes an inverter controller and at least one surge protection device as mentioned in this paper, which is configured to operate multiple switches to provide an alternating current to an output, while the surge protection devices are configured to limit a voltage on a direct current link of the inverter.
Patent
Separating device for an overvoltage protection element
TL;DR: In this paper, a separating device for an overvoltage protection element and a thermal disconnector is proposed, where the separating device has a first insulating layer and a second insulation layer.
References
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Patent
Electrical surge suppressor and dual indicator apparatus
John J Misencik,Roy O. Wiley +1 more
TL;DR: In this paper, a surge suppressor and dual indicator apparatus can be contained within a wiring device such as a receptacle, which can be used to avoid hazardous overvoltages on the varistors.
Patent
Automatic surge suppressor disconnect protection system
TL;DR: In this paper, the first surge suppressor disconnect protection circuit is coupled to a signal adjuster at the phase and neutral line terminals of an AC source and to the AC neutral terminal for rectifying AC to generate a DC signal.
Patent
Surge protection device with thermal protection, current limiting, and failure indication
TL;DR: In this paper, a surge protection device that makes use of metal oxide varistors (MOVs) to limit the magnitude of electrical surges in single phase or multi-phase power distribution networks is described.
Patent
Integral sensor for monitoring a metal oxide varistor
TL;DR: In this paper, a body of sintered metal oxide material having first and second opposed surfaces and a third surface disposed therebetween is considered, and a pair of third electrodes are positioned on opposite sides of the surface interconnecting the first two opposed surfaces whereby the monitoring path intersects the main conductive path.
Patent
Method for detecting a failed ZnO disk in a surge arrester network
TL;DR: In this article, a method of detecting failed disks in power-system surge arresters comprising a network of at least two parallel-coupled stacks of series-couple ZnO varistors is proposed.