Abstract:
The invention relates to a medium voltage switchgear with interlocking device corresponding with a actuator drive, which operates a switching element via a mechanical coupling element, wherein the switching drive is movable in two end position as well as in a freely selectable middle position until which the interlocking is active between the middle position and a particular end position. In order to keep the interlocking active over a certain range of the actuator travel, the invention is, that the mechanical coupling element comprises an element which axis is inclinable to the actuation axis of the drive during operation in that way, that in both end positions as well as in the middle position, the long axis of this element is inclined to the actuation axis of the drive.
Abstract:
A pushrod assembly 10 for a circuit breaker comprises a pushrod 12 with an insulating body 16, an insulating housing 14 surrounding the push rod 12, a first insulating shield 32 connected to the pushrod 12 and a second insulating shield 34 connected to the housing 14. The first insulating shield 32 and the second insulating shield 34 are arranged inside the housing 14 such that an electrical path through a fluid 26 inside the housing 14 is longer than the distance of a first end 18 and a second end 22 of the push rod 12.
Abstract:
Subsea housing (1) for medium voltage vacuum circuit breaker (6) in high pressure environment, wherein the vacuum circuitbreaker (6) is assembled on a separate platform (7) which is to be inserted into a ceramic cylidrical high pressure withstanding housing (1,2), this in order to enhance the assembling and the pressure tightness in high pressure environment, the invention is, that the subassembly is mounted on a separate inserted platform, which is insertable and fixable inside the tubelike outer housing. figure 1
Abstract:
The invention relates to a circuit-breaker for switching medium-voltage to high-voltage circuits, comprising a pole part (1) having a cup-shaped housing (4) made of insulating material for accommodating an interrupter insert (3) operated by a drive rod (12), wherein the cup-shaped housing () is divided in an upper housing part (5) in which the interrupter insert (3) is arranged and a lower housing part (6) for accommodating a magnetic actuator (2), wherein the drive rod (12) of the interrupter insert (3) is coaxially arranged to an armature (13) of the magnetic actuator (2).