Abstract: A system and method for an electric pole part apparatus, includes an electric interruption unit; a heat sink; and a heat pipe arrangement; wherein the heat pipe arrangement comprises a plurality of heat pipes enclosed at least partially by an outer housing; wherein a first end of the heat pipe arrangement is connected to the heat sink; and wherein a second end of the heat pipe arrangement is connected to the electric interruption unit.

Abstract: A system and method for an electric pole part apparatus, includes an electric interruption unit; a heat sink; and a heat pipe arrangement; wherein the heat pipe arrangement comprises a plurality of heat pipes enclosed at least partially by an outer housing; wherein a first end of the heat pipe arrangement is connected to the heat sink; and wherein a second end of the heat pipe arrangement is connected to the electric interruption unit.

Abstract: A medium voltage circuit breaker includes: vacuum interrupters; and a drive, the drive being provided with a magnetic actuator with a yoke, and an anchor. At least the yoke or the anchor includes a movable part, the movable part of the drive being coupled to a movable part of a switch, and the yoke being provided with an actuation coil. The actuation coil can be driven actively by activation with electrical energy. The yoke is provided with at least one passive coil, which is coupled with the actuation coil only inductively, and with at least one permanent magnet, arranged inside or at the yoke, by which magnetic flux will be further concentrated and/or enhanced towards an airgap to the anchor.

Abstract: Exemplary embodiments relate to a medium voltage switchgear with interlocking device associated with an actuator drive, which operates a switching element via a mechanical coupling element. The switching drive is movable in two end positions until which the interlocking is active between a freely selectable middle position and a specified end position. In order to keep the interlocking active over a certain range of the actuator travel, the mechanical coupling element includes a force flux element that is rotatable during operation of the drive from OFF to ON. In this way, the region where the interlocking shifts from unlocked to locked can freely be chosen by the shape of the force flux element.

Abstract: A vacuum circuit breaker for the use in high pressure environments, has at least one vacuum interrupter with at least one moving contact and at least one fixed contact inside the vacuum interrupter, and external contact points at the vacuum interrupter. The vacuum circuit breaker can be used under the high-pressure environmental conditions through the use of at least one vacuum interrupter arranged in a pressure tight container, wherein the electrical contacting is realized via a high voltage bushings through the container wall, and the pressure tight container is at least partially filled with insulating oil.

Abstract: Exemplary embodiments relate to a medium voltage switchgear with interlocking device associated with an actuator drive, which operates a switching element via a mechanical coupling element. The switching drive is movable in two end positions until which the interlocking is active between a freely selectable middle position and a specified end position. In order to keep the interlocking active over a certain range of the actuator travel, the mechanical coupling element includes a force flux element that is rotatable during operation of the drive from OFF to ON. In this way, the region where the interlocking shifts from unlocked to locked can freely be chosen by the shape of the force flux element.

Abstract: A pushrod assembly for a circuit breaker having a pushrod with an insulating body, an insulating housing surrounding the push rod, a first insulating shield connected to the pushrod and a second insulating shield connected to the housing. The first insulating shield and the second insulating shield are arranged inside the housing such that an electrical path through a fluid inside the housing is longer than the distance of a first end and a second end of the push rod.

Abstract: A pushrod assembly for a circuit breaker having a pushrod with an insulating body, an insulating housing surrounding the push rod, a first insulating shield connected to the pushrod and a second insulating shield connected to the housing. The first insulating shield and the second insulating shield are arranged inside the housing such that an electrical path through a fluid inside the housing is longer than the distance of a first end and a second end of the push rod.

Abstract: A circuit-breaker is provided for switching medium-voltage to high-voltage circuits. The circuit breaker includes a pole part having a cup-shaped housing made of insulating material for accommodating an interrupter insert operated by a drive rod. The cup-shaped housing is divided into an upper housing part in which the interrupter insert is arranged, and a lower housing part for accommodating a magnetic actuator. The drive rod of the interrupter insert is coaxially arranged to an armature of the magnetic actuator.