Overvoltage protection device with a measuring device for monitoring overvoltage protection elements

摘要

Systems and methods for overvoltage protection are disclosed. According to one illustrative implementation, an overvoltage protection device is provided having one or more overvoltage protection elements and a measuring device for monitoring the overvoltage protection elements. Further, the measuring device may include an evaluation device, which is designed to count pulse-like overvoltage events which are arrested by the overvoltage protection element, wherein the evaluation device is connected to the overvoltage protection element via a light-measuring device and/or a device for identifying a current flow. In further implementations, overvoltage protection devices may comprise an evaluation device which, on the basis of the counted pulses and/or an identified current flow, may determine whether the overvoltage protection element is still operational, is previously damaged, or is unusable, and/or an alarm device, which indicates whether the overvoltage protection element is still operational, is previously damaged, or is unusable.

主权项

1. An overvoltage protection device comprising:
one or more overvoltage protection elements, including a gas-filled overvoltage arrester, which can be short-circuited, as an overvoltage protection element; and a measuring arrangement for monitoring the overvoltage protection elements, wherein the measuring arrangement comprises:
a temperature-measuring arrangement, which is in thermal contact with the gas-filled overvoltage arrester, which can be short-circuited;an evaluating arrangement, which identifies whether the short-circuit spring has been triggered on the basis of a measured first temperature value and a second temperature value, which are measured by the measuring arrangement at a first moment in time and a second moment in time, which is different from the first moment in time, respectively; andan alarm arrangement, which provides indication as to whether the short-circuit spring has been triggered, wherein the evaluating arrangement is adapted to generate the indication;wherein the measuring arrangement is adapted for indirectly monitoring triggering of a short circuit spring of the gas-filled overvoltage arrester.