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

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:

• 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.

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:

• 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.

An overvoltage protection device comprising:

• 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.