A vacuum switching device may have at least one cup-shaped contact closed by a disc of contact material and a conical mechanical support, which acts to prevent the contact disc from becoming concave. The cup-shaped contact may include a plurality of slots in the sidewalk that extend into the base of the cup, the slots oriented to produce an axial magnetic field when current flows through the contacts. The support may be made of a metal that is a poor conductor of electricity. The narrow end of the cone may be capped by a circular ring or disc, and the wide end may be formed with a flange. The flange may be circular and may be sized and formed to locate the cone centrally in the base of the contact cup. The cone may have apertures to facilitate the evacuation of gas inside the cone.

A vacuum switching device may have at least one cup-shaped contact closed by a disc of contact material and a conical mechanical support, which acts to prevent the contact disc from becoming concave. The cup-shaped contact may include a plurality of slots in the sidewalk that extend into the base of the cup, the slots oriented to produce an axial magnetic field when current flows through the contacts. The support may be made of a metal that is a poor conductor of electricity. The narrow end of the cone may be capped by a circular ring or disc, and the wide end may be formed with a flange. The flange may be circular and may be sized and formed to locate the cone centrally in the base of the contact cup. The cone may have apertures to facilitate the evacuation of gas inside the cone.

The present disclosure relates to a contact point monitoring module for a vacuum circuit breaker and a vacuum circuit breaker comprising the same. The present disclosure provides a vacuum circuit breaker comprising a push rod assembly which is coupled to a movable electrode of a vacuum interrupter and moves the movable electrode up or down to make a movable contact in a contact closed state or a contact open state, wherein the vacuum circuit breaker comprises a linear sensor which is coupled to a lower side of the push rod assembly and senses displacement according to a moving direction of the push rod; and a sensor holder which is installed adjacent to the lower side of the push rod assembly and is coupled to the linear sensor to process a signal transferred from the linear sensor.

The present application discloses a DC vacuum interrupter and the application. The cup-shaped contact of the vacuum interrupter is in a transverse magnetic field. The magnetic core is placed in the contact cup. The magnetic core inside the cup of the contact works with the permanent magnets outside the vacuum interrupter to generate transverse magnetic fields in multiple directions between the contacts. While the contacts are open, the arc burns and moves rapidly along the ring shaped contacts under the transverse field along the tangent line of the contacts. While the arc moves rapidly along the ring-shaped contacts, the arc column passes the permanent magnets structure and works with the magnetic core to generate multi-polar transverse magnetic field. While the arc column makes a turn, the number of the transverse fields which are cut by the arc is same with the number of the permanent magnets set.

A vacuum circuit breaker comprises a vacuum interrupter operable between a closed state and an open state, and an actuator. The actuator comprises a piezoelectric driving element that is expandable and contractable along an expansion axis in response to an electrical input signal. The actuator further comprises a mechanical amplifying structure extendable along an actuation axis and being mechanically coupled to the piezoelectric driver such that expansion or contraction of said piezoelectric driving element causes the amplifying structure to extend or retract along the actuation axis. The mechanical amplifying structure is coupled to the vacuum interrupter for operating the vacuum interrupter between said closed and open states.

A vacuum valve according to embodiments of the present disclosure, comprising: an electrode having a first surface which a hollow part is formed on, which electrode spiral electrode slits which slantingly cross an axial direction are formed on outer circumference of, a conductor fixed on a second surface of the electrode, which second surface is opposite side of the first surface, a contact point having a first concavity which opens to the conductor side, which contact point is fixed on the first surface of the electrode, and a connecting plate whose resistivity is lower than one of the contact point, which connecting plate is disposed inside the first concavity, and connecting plate slits which extend inward from circumference as a starting point are formed on, wherein central axes of the connecting plate slits incline in a rotatory direction of the spiral of the electrode slits.

A contact disc of a contact element for a vacuum switch is provided, which includes predominantly of a first conductive material or composite material and has a plurality of inlets distributed over the circumference and made of a second material with a lower level of conductivity relative to the first material or composite material, which, during a switching process of the vacuum switch, bring about the formation of a magnetic field and thereby a movement of an arising arc on a predefined path and/or an extensive propagation of the arc. A production method for a contact disc of this type is also provided.

A contact carrier of a contact element for a vacuum switch is provided, which includes predominantly of a first conductive material or composite material and has a plurality of inlets of a second material distributed over the circumference, which bring about the formation of a magnetic field and thereby a movement of an arising arc on a predefined path during a switching process of the vacuum switch, wherein the second material has a lower level of conductivity relative to the first material or composite material and is introduced into the first material during the shaping of the contact carrier basic form. A production method for a contact carrier of this type is also provided.

A contact assembly for use in a vacuum interrupter includes a contact disc of a first electrically conductive material, a coil, and a contact support. The coil is made from a second electrically conductive material and includes multiple helical sections that are oriented axially with respect to a common central axis. Each of the helical sections includes a proximal end and a distal end such that each of the helical sections is connected at the proximal end to a base made from the second electrically conductive material and is connected at the distal end to the contact disc. The contact support is centered axially within the coil and extends from the base to the contact disc.

An exemplary vacuum interrupter for a circuit breaker arrangement including a cylindrically shaped insulating part, within which a pair of electrical contact parts are coaxially arranged and surrounded concentrically by the insulating part. The electrical contact parts can be configured to initiate a disconnection arc only between corresponding inner contact elements after starting a disconnection process, and corresponding outer contact elements can be configured to commutate the arc from the inner contact elements to the outer contact elements until the disconnection process is completed, wherein each inner electrical contact element is designed as a TMF-like contact element for generating mainly a transverse magnetic field, and each outer electrical contact element is designed as an AMF-like contact element for generating mainly an axial magnetic field.