A medium or high voltage electrical device and method of maintaining the composition of an insulating gas mixture in a medium or high voltage electrical device, where the device comprises a sealed chamber, said sealed chamber comprising electrical components; a gas mixture ensuring electrical insulation and/or extinguishing of electrical arcs produced in this chamber, wherein the gas mixture comprises at least one insulating gas and at least one dilution gas; and a receptacle, said receptacle comprising an opening, at least one wall, wherein at least one wall is a heatable wall, and wherein said receptacle is positioned to receive liquefied gas; the device further comprising a heating element for heating the heatable receptacle wall; and a dielectrically and thermally insulating layer located between the heatable receptacle wall and the chamber.

An enclosure for a circuit breaker that includes a particle trap that is integrated into at least one foot of the enclosure. The enclosure can be configured to house a circuit interrupter and seal a dielectric insulating medium within an interior region of the enclosure. The particle trap can include an opening that extends through at least an inner side of a wall of the enclosure and into an adjacent foot such that the opening is in fluid communication with the interior region of the enclosure. Additionally, the opening of the particle trap can radially extend within both the wall of the enclosure and the foot between a first side and a second side of the particle trap.

An enclosure for a circuit breaker that includes a particle trap that is integrated into at least one foot of the enclosure. The enclosure can be configured to house a circuit interrupter and seal a dielectric insulating medium within an interior region of the enclosure. The particle trap can include an opening that extends through at least an inner side of a wall of the enclosure and into an adjacent foot such that the opening is in fluid communication with the interior region of the enclosure. Additionally, the opening of the particle trap can radially extend within both the wall of the enclosure and the foot between a first side and a second side of the particle trap.

A switching arrangement has a plurality of at least two contact arrangements and a blasting arrangement for blasting the contact arrangements with insulation gas. The at least two contact arrangements each have a first contact piece and a second contact piece which can be moved relative to one another in order to form an electrical connection when the first contact piece and the second contact piece are in contact and to form an insulation zone when the contact pieces are isolated from one another. The blasting arrangement has at least two blowing volumes, wherein a first contact arrangement can be supplied with insulation gas by a first blowing volume and wherein a second contact arrangement can be supplied with insulation gas by a second blowing volume.

A switching arrangement has a plurality of at least two contact arrangements and a blasting arrangement for blasting the contact arrangements with insulation gas. The at least two contact arrangements each have a first contact piece and a second contact piece which can be moved relative to one another in order to form an electrical connection when the first contact piece and the second contact piece are in contact and to form an insulation zone when the contact pieces are isolated from one another. The blasting arrangement has at least two blowing volumes, wherein a first contact arrangement can be supplied with insulation gas by a first blowing volume and wherein a second contact arrangement can be supplied with insulation gas by a second blowing volume.

There is a gas circuit breaker that can reduce deterioration in insulation performance and current breaking performance due to unnecessary gas generated from arc-extinguishing gas sprayed to an arc. The gas circuit breaker includes a sealed container 8 in which the arc-extinguishing gas is enclosed, a first fixed contactor portion 2 fixed to the sealed container 8, a second fixed contactor portion 4 fixed to the sealed container 8, and a movable contactor portion 3 which moves between the first fixed contactor portion 2 and the second fixed contactor portion 4, to conduct and break current between the first fixed contactor portion 2 and the second fixed contactor portion 4, in which an arc generated between a fixed arc contactor 21 provided to the first fixed contactor portion 2 and a movable arc contactor 31 provided to the movable contactor portion 3 at a time of current breaking action is extinguished by spraying the arc-extinguishing gas, the gas circuit breaker includes a gas chamber 5 configured to accumulate the unnecessary gas generated from the arc-extinguishing gas sprayed to the arc, the sealed container 8 is formed by joining ends of the two hollow truncated cone portions 82 and 83, each having a large opening diameter, with the cylindrical portion 82 therebetween, and the gas chamber 5 is formed inside the cylindrical portion 81 forming the sealed container 8.

There is a gas circuit breaker that can reduce deterioration in insulation performance and current breaking performance due to unnecessary gas generated from arc-extinguishing gas sprayed to an arc. The gas circuit breaker includes a sealed container 8 in which the arc-extinguishing gas is enclosed, a first fixed contactor portion 2 fixed to the sealed container 8, a second fixed contactor portion 4 fixed to the sealed container 8, and a movable contactor portion 3 which moves between the first fixed contactor portion 2 and the second fixed contactor portion 4, to conduct and break current between the first fixed contactor portion 2 and the second fixed contactor portion 4, in which an arc generated between a fixed arc contactor 21 provided to the first fixed contactor portion 2 and a movable arc contactor 31 provided to the movable contactor portion 3 at a time of current breaking action is extinguished by spraying the arc-extinguishing gas, the gas circuit breaker includes a gas chamber 5 configured to accumulate the unnecessary gas generated from the arc-extinguishing gas sprayed to the arc, the sealed container 8 is formed by joining ends of the two hollow truncated cone portions 82 and 83, each having a large opening diameter, with the cylindrical portion 82 therebetween, and the gas chamber 5 is formed inside the cylindrical portion 81 forming the sealed container 8.

A gas insulated switchgear includes: a gas-tight housing; at least one shaft extending through an opening in the gas-tight housing, which shaft is partially rotatable and/or translatable; a sealing means arranged in the opening for sealing the shaft relative to the gas-tight housing, the sealing means including a sealing bellows having a first mounting rim on one axial end, a second mounting rim on an other axial end, and a bellow body in between the first and second mounting rims; and a mounting ring mounted coaxially to the shaft. The sealing bellows is arranged around the shaft, with the first mounting rim to the housing and with the second mounting rim to the mounting ring.

An electrical apparatus containing an adsorbent, includes a housing, an adsorbent cover, an adsorbent and a locating bolt. The housing is cylindrical and has at least one locating hole. The adsorbent cover is installed in the housing, and has an annular groove in a circumferential direction, with the locating hole being opposite the groove. An outer diameter of a groove edge is the same as an inner diameter of the housing, while the diameter of a middle part of the groove is less than the inner diameter of the housing. The adsorbent is placed in the groove. The locating bolt passes through the locating hole and extends into the groove. The electrical apparatus has a simple structure. Since installation on a flange is not needed, a flange on the housing that is connected to an adsorbent container is dispensed with. The cost of the adsorbent container and housing are reduced.

An electrical apparatus containing an adsorbent, includes a housing, an adsorbent cover, an adsorbent and a locating bolt. The housing is cylindrical and has at least one locating hole. The adsorbent cover is installed in the housing, and has an annular groove in a circumferential direction, with the locating hole being opposite the groove. An outer diameter of a groove edge is the same as an inner diameter of the housing, while the diameter of a middle part of the groove is less than the inner diameter of the housing. The adsorbent is placed in the groove. The locating bolt passes through the locating hole and extends into the groove. The electrical apparatus has a simple structure. Since installation on a flange is not needed, a flange on the housing that is connected to an adsorbent container is dispensed with. The cost of the adsorbent container and housing are reduced.