Disclosed is a method of reconditioning a vacuum interrupter that comprises determining whether the vacuum interrupter is suitable for reconditioning. Where the vacuum interrupter is suitable for reconditioning, the method comprises reducing pressure inside vacuum interrupter using magnetron pumping, and/or forming at least one hole in an endcap of a vacuum envelope of the vacuum interrupter, cleaning components of the vacuum interrupter inside the vacuum envelope by introducing at least one cleaning solution into the interior of the vacuum envelope through the at least one hole in the endcap, removing the cleaning solution from the interior of the vacuum envelope, installing a plug in the at least one hole, wherein the plug has getter material on a surface thereof facing the interior of the vacuum envelope, and vacuum sealing the plug to the at least one hole such that a vacuum is re-established in the interior of the vacuum envelope.

Disclosed is a method of reconditioning a vacuum interrupter that comprises determining whether the vacuum interrupter is suitable for reconditioning. Where the vacuum interrupter is suitable for reconditioning, the method comprises reducing pressure inside vacuum interrupter using magnetron pumping, and/or forming at least one hole in an endcap of a vacuum envelope of the vacuum interrupter, cleaning components of the vacuum interrupter inside the vacuum envelope by introducing at least one cleaning solution into the interior of the vacuum envelope through the at least one hole in the endcap, removing the cleaning solution from the interior of the vacuum envelope, installing a plug in the at least one hole, wherein the plug has getter material on a surface thereof facing the interior of the vacuum envelope, and vacuum sealing the plug to the at least one hole such that a vacuum is re-established in the interior of the vacuum envelope.

The occurrence of an upward streamer is effectively suppressed by reducing a positively charged region formed around a lightning protection device as much as possible.

The lightning protection device includes: an inner electrode body 2 which is grounded; an outer electrode body 3 which is provided so as to enclose the inner electrode body 2 with a predetermined gap G from the inner electrode body 2; an electrical insulator S which is provided in the gap G to hold the inner electrode body 2 and the outer electrode body 3 in a state of being electrically insulated from each other; and a support body for the inner electrode body, in which the inner electrode body 2 is formed in a substantially spherical shape, the outer electrode body 3 is formed in a spherical shell shape similar to an outer surface shape of the inner electrode body 2, and substantially an entire surface of the inner electrode body 2 is covered by the outer electrode body 3.

Disclosed herein is a method of reconditioning a vacuum interrupter that comprises determining whether the vacuum interrupter is suitable for reconditioning. Where the vacuum interrupter is suitable for reconditioning, the method comprises optionally reducing pressure inside vacuum interrupter using magnetron pumping, and/or forming at least one hole in an endcap of a vacuum envelope of the vacuum interrupter, cleaning components of the vacuum interrupter inside the vacuum envelope by introducing at least one cleaning solution into the interior of the vacuum envelope through the at least one hole in the endcap, removing the cleaning solution from the interior of the vacuum envelope, installing a plug in the at least one hole, wherein the plug has getter material on a surface thereof facing the interior of the vacuum envelope, and vacuum sealing the plug to the at least one hole such that a vacuum is re-established in the interior of the vacuum envelope.

This disclosure concerns a disconnector device for a surge arrester. The disconnector device comprises a housing encompassing a cavity and a disconnector unit provided inside the cavity. The disconnector device is connectable to the surge arrester and to ground potential. The housing forms an inner housing of a housing unit. The housing unit comprising an inner housing and an outer housing. The at least one ventilation opening of the inner housing is fluidly connected to the at least one further ventilation opening of the outer housing such that a labyrinth with a gas escape path for the gases from the operating disconnector cartridge is formed.

In a described example, an apparatus includes: an integrated circuit die having multiple terminals; a leadframe having leads for external connections, at least some of the leads electrically coupled to at least one of the multiple terminals of the integrated circuit die; a first electrode having a first end portion; a second electrode having a second end portion positioned proximal to and spaced apart from the first end portion of the first electrode, the first end portion and the second end portion spaced by a spark gap; encapsulation material surrounding the integrated circuit die to form a packaged integrated circuit having a cavity surrounding the first end portion, the second end portion, and the spark gap so that the first end portion of the first electrode, the second end portion of the second electrode and the spark gap are spaced from the encapsulation material.

This disclosure concerns a disconnector device for a surge arrester. The disconnector device comprises a housing encompassing a cavity and a disconnector unit provided inside the cavity. The disconnector device is connectable to the surge arrester and to ground potential. The housing forms an inner housing of a housing unit. The housing unit comprising an inner housing and an outer housing. The at least one ventilation opening of the inner housing is fluidly connected to the at least one further ventilation opening of the outer housing such that a labyrinth with a gas escape path for the gases from the operating disconnector cartridge is formed.

An improved triggered arc flash arrester includes a shield apparatus disposed within an interior of an evacuated envelope and includes a first shield element and a second shield element. A plurality of conductors are partially disposed within the interior and are separated from one another by a gap. A first element of the shield apparatus is situated adjacent the envelope and is structured to protect the envelope from damage due to the high temperature plasma that results from an arc across the gap. A second element of the shield apparatus is interposed between the gap and at least a portion of the first element and is structured to protect the at least portion of the first element from damage due to an arc across the gap.

An arrester including a metal oxide varistor (MOV) disc and a spark gap assembly electrically connected in series with the MOV disc. The spark gap assembly includes a spark gap and a frequency-dependent grading capacitor electrically connected in parallel with the spark gap.

An arrester including a metal oxide varistor (MOV) disc and a spark gap assembly electrically connected in series with the MOV disc. The spark gap assembly includes a spark gap and a frequency-dependent grading capacitor electrically connected in parallel with the spark gap.