The utility model discloses a self -
recovery type
spark gap overvoltage protection device relates to
overvoltage protection tool technical field, including the protection cover, and the inside installation of protection cover has the
ceramic insulation shell, and the outside of
ceramic insulation shell is pasted with the inside of protection cover, and the inside installation of
ceramic insulation shell has the adjusting mechanism, and ceramic insulation shell's inside both sides all install the pressure -reducing mechanism, the utility model discloses the cooperation of two -way screw rod and insulating guide rod, the interval of conductive
electrode plate is controlled conveniently, and the
breakdown voltage size of adjusting device is convenient, through the cooperation of buffer board and spring, the buffer board moves outward and reduces the pressure to the inside when the inside
inert gas expands, and it is convenient to prevent the device from damaging due to the pressure expansion in the inside, through above -mentioned structure has solved the problem that the existing
spark gap overvoltage protection device can only select the device that meets with the protected device's working
voltage and installs according to it when using, and cannot adjust the
breakdown voltage of device.