A bellows assembly for a vacuum interrupter. The bellows assembly including an outer cylindrical shell surrounding an opening spring, a spring plate, a contact spring. The bellows assembly further including a bellows. Wherein the bellows assembly reciprocates a moveable contact of the vacuum interrupter to prevent arcing between a pair of contacts and biasing the pair of contacts apart from each other.

An induction-controlled switch having a vacuum bulb comprising a vacuum chamber and a switch comprising first and second electrodes. The first switch comprising first and second electrodes and further having a first actuator slidably mounted in a first direction and rigidly attached to the first electrode. The first actuator comprising a first armature. A second actuator comprising a second armature. A first control member comprising a first coil configured to simultaneously generate a switching current in the first armature and a current in the second armature via the first coil, so as to separate or bring into contact the first and second electrodes and so as to move the first and second actuators in opposite ways along the first direction.

An induction-controlled switch having a vacuum bulb comprising a vacuum chamber and a switch comprising first and second electrodes. The first switch comprising first and second electrodes and further having a first actuator slidably mounted in a first direction and rigidly attached to the first electrode. The first actuator comprising a first armature. A second actuator comprising a second armature. A first control member comprising a first coil configured to simultaneously generate a switching current in the first armature and a current in the second armature via the first coil, so as to separate or bring into contact the first and second electrodes and so as to move the first and second actuators in opposite ways along the first direction.

According to one embodiment, a Vacuum interrupter includes a pair of electrodes provided such that their electrode opposed surfaces face each other, and an undulating structure provided in at least one of the electrode opposed surfaces. The undulating structure includes one or more projections which project from the electrode opposed surface, and depressions provided so as to be adjacent to the projections, respectively. The projections and the depressions are alternately provided in a direction crossing the electrode opposed surface. In a conducting state in which the electrodes are in contact with each other, the projections are in contact with the opposite electrode opposed surface.

According to one embodiment, a Vacuum interrupter includes a pair of electrodes provided such that their electrode opposed surfaces face each other, and an undulating structure provided in at least one of the electrode opposed surfaces. The undulating structure includes one or more projections which project from the electrode opposed surface, and depressions provided so as to be adjacent to the projections, respectively. The projections and the depressions are alternately provided in a direction crossing the electrode opposed surface. In a conducting state in which the electrodes are in contact with each other, the projections are in contact with the opposite electrode opposed surface.

A current switch including a main contact including an electrically conductive knife, and an electrically insulating element, fitted in a mobile manner on a first portion of electric line in order to alternatively follow an opening movement and a closing movement; a shunt branch including a first part electrically connected to a second portion of the line, including a vacuum interrupter configured to be actuated alternatively between an open state and a closed state, a second part fitted in a mobile manner on the first part and configured to actuate the vacuum interrupter. During the opening movement, the electrically conductive knife acts upon the second part in order to actuate the vacuum interrupter, and during the closing movement, the electrically insulating element acts upon the second part without actuating the vacuum interrupter).

A current switch including a main contact including an electrically conductive knife, and an electrically insulating element, fitted in a mobile manner on a first portion of electric line in order to alternatively follow an opening movement and a closing movement; a shunt branch including a first part electrically connected to a second portion of the line, including a vacuum interrupter configured to be actuated alternatively between an open state and a closed state, a second part fitted in a mobile manner on the first part and configured to actuate the vacuum interrupter. During the opening movement, the electrically conductive knife acts upon the second part in order to actuate the vacuum interrupter, and during the closing movement, the electrically insulating element acts upon the second part without actuating the vacuum interrupter).

A vacuum interrupter includes at least one insulating body, a fixed contact, a fixed contact flange, a moving contact having a longitudinal axis of the moving contact, a moving contact flange, a moving contact bearing, and a bellows. The fixed contact is stationarily disposed in the fixed contact flange, the moving contact is moveably guided in the moving contact bearing and the moving contact is moveably secured to the moving contact flange by the bellows. The bellows is secured to the moving contact flange by a first bellows end and the bellows is secured to the moving contact by a second bellows end. An increased pressure resistance of the vacuum interrupter against ambient pressures over 1 bar is achieved by a sleeve which is secured to the moving contact against movements along the longitudinal axis of the moving contact, and which is guided through the moving contact bearing.

A vacuum valve includes: an insulation container; a fixed-side electrode including a fixed-side contact, a fixed-side longitudinal magnetic-field coil generating a magnetic field on a surface of the fixed-side contact in an axial direction, and a fixed-side spacer; and a movable-side electrode including a movable-side contact, a movable-side longitudinal magnetic-field coil generating a magnetic field on a surface of the movable-side contact in the axial direction, and a movable-side spacer. The fixed-side longitudinal magnetic-field coil and the movable-side longitudinal magnetic-field coil each include an outer ring portion having an arc shape and a power feeding portion protruding from an end of the outer ring portion. The fixed-side or movable-side contact is brazed to the power feeding portion. The fixed-side and movable-side spacers are made of a material with lower conductivity than materials of the fixed-side and movable-side longitudinal magnetic-field coils, or made of an insulator.

The disclosure discloses an optical path system for detecting a vacuum degree of a vacuum switch and a method thereof. In the optical path system, a plasma excitation unit excites pulsed laser along an excitation optical path to bombard a shielding case of a vacuum switch to be detected, so as to generate laser plasma; an optical path focusing unit focuses the excitation optical path and a collection optical path to focus the pulsed laser on the shielding case of the vacuum switch to be detected; the optical path focusing unit includes a visible laser device for generating visible light and an adjustment device for adjusting the excitation optical path; an image collection unit collects a laser plasma image and a visible light spot focusing image; the image collection unit includes a gated detector for collecting the visible light spot image and the laser plasma image via the collection optical path; a vacuum degree detection unit is connected with the image collection unit to process the laser plasma image and extract characteristic parameters; and the vacuum degree detection unit includes a processing module for obtaining, according to a relation between the characteristic parameters and a vacuum degree, the vacuum degree of the vacuum switch to be detected.

image collection unit collects a laser plasma image and a visible light spot focusing image; the image collection unit includes a gated detector for collecting the visible light spot image and the laser plasma image via the collection optical path.