VACUUM ARRESTER Russian patent published in 2018 - IPC H01T1/20 H01J17/64 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and high-current electronics, in particular to the switching means, and is a vacuum arrestor controlled by focused optical radiation, and can be used for switching high-current high-voltage electrical systems. In a sealed dielectric shell, including an optically transparent window, a coaxial electrode system is disposed, consisting of electrodes of identical shape, each of which is made with a through hole on the symmetry axis of the arrester, and a target made of a refractory material and located on the axis of symmetry of the arrester at the point of focus beyond the interelectrode gap. Pressure inside the shell is 10^-4-10^-2 Thor (10^-2-10⁰ Pa). Control radiation from the pulsed optical radiation source is focused on the target, as a result of which the UV and VUV radiation from the plasma, forming at the surface of the target, ionizes the residual gases inside the shell, creates a conducting medium in the interelectrode space and switches the discharger.

EFFECT: technical result is an increase in the life, reliability and stability of the vacuum arrester.

4 cl, 2 dwg