Overvoltage protection device with a measuring device for monitoring overvoltage protection elements
First Claim
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; and
an 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.
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Accused Products
Abstract
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.
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Citations
21 Claims
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1. An overvoltage protection device comprising:
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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; and an 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for operating a measuring arrangement for indirect monitoring of triggering of a short-circuit spring of a gas-filled overvoltage arrester, which can be short-circuited, with a temperature-measuring arrangement, which is in thermal contact with the gas-filled overvoltage arrester, which can be short-circuited, said method comprising the following steps:
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measuring a first temperature value at a first moment in time, measuring a second temperature value at a second moment in time, which is different from the first moment in time, identifying, on the basis of the measured first temperature value and on the basis of the measured second temperature value, whether the short-circuit spring has been triggered, and upon identifying that the short-circuit spring has been triggered, indicating the identification. - View Dependent Claims (17, 18, 19)
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20. An overvoltage protection device with one or more overvoltage protection elements and a measuring arrangement for monitoring the overvoltage protection elements, the overvoltage protection device comprising:
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an evaluating arrangement, which is designed to count pulse-like overvoltage events which are arrested by the overvoltage protection element, wherein the evaluating arrangement is connected via a light-measuring arrangement to the overvoltage protection element, and/or an arrangement for identifying a current which is flowing for a long period time and which is flowing through the overvoltage protection element; wherein the overvoltage protection device additionally comprises; an evaluating arrangement, which, based on the counted pulses and/or an identified current which is flowing for a long period of time, determines whether the overvoltage protection element is still operational, has sustained previous damage or is unusable and a first alarm arrangement, which indicates whether the overvoltage protection element is still operational, has sustained previous damage or is unusable; wherein the measuring arrangement is also coupled for the indirect monitoring of a short-circuit spring of a gas-filled overvoltage arrester, and wherein the overvoltage protection device further 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, based on temperature values that have been measured at different times, identifies whether the short-circuit spring has been triggered, and a second alarm arrangement, which indicates the identification of a triggered short-circuit spring, wherein the alarm is implemented by the evaluating arrangement.
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21. An overvoltage protection device comprising:
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one or more overvoltage protection elements, wherein at least one of the one or more overvoltage protection elements includes a gas-filled overvoltage arrester; a measuring arrangement for monitoring the one or more overvoltage protection elements, wherein the measuring arrangement is also coupled for indirect monitoring of a short-circuit spring of a gas-filled overvoltage arrester; a first evaluating arrangement, which, based on the counted pulses and/or an identified current which is flowing for a long period of time, determines whether the overvoltage protection element is still operational, has sustained previous damage or is unusable, and a first alarm arrangement, which indicates whether the overvoltage protection element is still operational, has sustained previous damage or is unusable; a temperature-measuring arrangement, which is in thermal contact with the gas-filled overvoltage arrester, which can be short-circuited, a second evaluating arrangement, which, based on temperature values that have been measured at different times, identifies whether the short-circuit spring has been triggered; a second alarm arrangement, which indicates the identification of a triggered short-circuit spring, wherein the alarm is implemented by the evaluating arrangement; wherein the overvoltage protection device further comprises; a second evaluating arrangement, which is designed to count pulse-like overvoltage events which are arrested by the overvoltage protection element, wherein the evaluating arrangement is connected via a light-measuring arrangement to the overvoltage protection element, and/or an identifying arrangement for identifying a current which is flowing for a long period time and which is flowing through the overvoltage protection element.
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Specification