Abstract: An underarm gang operated vacuum break switch (underarm switch) has an electrically live portion under a mounting arm, which provides advantages over the standard vacuum break switch, which have the electrically live portion above the mounting arm. Because the non-electrified mounting arm is above the electrified portion, the underarm switch is safer for perching birds and other wildlife. The nature of the underarm switch also provides other benefits including a disconnect blade that when opened creates a visual gap to ensure electrical discontinuity along with a safety locking arm tied to deactivating the underarm switch. Adding to the safety measures is a visual indicator that shows an electrician when the switch is live and safe to open the disconnect blade. Other safety measures include a shock absorber assembly and inertia slowing mass protecting electrical contacts within the vacuum break switch from failing.

Abstract: A group-operated switching system for multi-phase electrical transmission lines including a number of inline axial switches for opening and closing circuits to control electrical flow through the transmission lines. The switches include axially mounted load break vacuum interrupters and are mechanically and electrically isolated from each other and from a control box. The control box communicates with the inline switches via RF communications. Power for the switch electronics and operations can be provided from line power, a battery, or a capacitive source.

Abstract: A pole part for a medium or high voltage circuit breaker includes: an insert in an insulating housing; and a compensation layer between the insert and the insulating housing. The compensation layer includes a potting material on an epoxy or polyurethane basis, with a shore hardness of 12 to 90 shore A.

Abstract: A vacuum switch includes two mutually spaced apart bases and a vacuum interrupter disposed between the bases and connected to the bases. A first switching element is disposed in the vacuum interrupter. A second switching element is movable between a first switching position, in which the second switching element galvanically or electrically conductively contacts the first switching element, and a second switching position, in which the second switching element is separated from the first switching element. Each of a plurality of rod-shaped supporting elements has a first end section connected to the first base and a second end section connected to the second base. The bases and the support elements form a support cage which surrounds and supports the vacuum interrupter.

Abstract: An embedded pole part for medium or high voltage use, with a vacuum interrupter which is embedded into an insulating resin, wherein a current and/or voltage sensor with sensor housing is integrated inside the insulating resin. In order to overcome the problems of the art, and to enhance the accuracy of voltage measurement, a metal grid is implemented into the insulating resin, which is arranged between the sensor housing of the current and/or voltage sensor and the outer surface of the insulating resin.

Abstract: The present disclosure relates to a vacuum interrupter capable of easily installing a central arc shielding plate in alignment without biasing in a radial direction. The vacuum interrupter includes a protruding guide unit protruding from a stationary electrode seal cup in a perpendicular direction to guide the installation of the central arc shielding plate such that the central arc shielding plate can be aligned in a radial direction.

Abstract: A switchgear assembly includes a vacuum interrupt chamber and a short-circuiting system arranged in the vacuum interrupt chamber. To enable rapid switching with physically simple means, a vacuum area of the vacuum interrupt chamber in which a fixed contact piece is placed is subdivided via a membrane, which is provided with a breaking line and which can be penetrated by a moving piston system to the contact piece during switching. The switchgear assembly can be utilized in a low-voltage, medium-voltage or high-voltage assembly.

Abstract: A contact is for a vacuum interrupter. The contact includes a contact member having a generally planar mating surface with a planar contact plane and a plurality of purposely introduced undulations therein. The undulations are structured to contact a plurality of purposely introduced undulations of another contact member. The undulations are in a dimension perpendicular to the planar contact plane. The planar contact plane has a diameter. The undulations have a depth substantially smaller than the diameter of the planar contact plane.

Abstract: The present disclosure relates to a vacuum interrupter capable of easily installing a central arc shielding plate in alignment without biasing in a radial direction. The vacuum interrupter includes a protruding guide unit protruding from a stationary electrode seal cup in a perpendicular direction to guide the installation of the central arc shielding plate such that the central arc shielding plate can be aligned in a radial direction.

Abstract: Disclosed is a bushing terminal of a vacuum circuit breaker used for interrupting current, which includes: a terminal body having a cylinder that can be inserted into the interior of a contactor and annular protrusions formed to be protrude from an outer circumferential surface of the cylinder; and a flange having an insertion hole through which the cylinder is inserted, wherein the annular protrusions are plastic-deformed so as to be fixed to the insertion hole of the flange.

Abstract: The invention relates to a vacuum switch, especially a vacuum circuit breaker, for medium and high voltages, comprising a mobile switch unit arranged inside a vacuum switch compartment (1) and provided with mutually mobile elements including a contact tappet (17), an insulator (18), and a driving or switching rod (11) introduced into the vacuum switch compartment (1) by means of metal bellows. Said vacuum switch also comprises a fixed contact inserted into the housing of the vacuum switch compartment (1). The upper end of the insulator (18) is fixed to the contact tappet (17), and the lower end of the insulator (18) is fixed to the driving or switching rod (11). The contact tappet (17) is connected to a conductor (8) by a flexible, electroconductive connection (20), said conductor being electroconductively connected to at least one laterally arranged output contact (6).

Abstract: A vacuum interrupter includes a number of insulative tubes having a first open end and a second open end; a first end member secured to the first open end; a second end member secured to the second open end; a fixed contact mounted on a fixed electrode extending through the second end member; a retainer; and a movable contact. The retainer includes a rigid retainer having a plurality of legs and an opening, and an insulative bushing having a smaller opening. The insulative bushing is molded over a portion of the rigid retainer. The smaller opening is within the opening of the rigid retainer and is structured to receive a movable electrode. The movable contact is mounted on the movable electrode extending through the first end member and through the smaller opening. The movable contact is capable of axially reciprocating into and out of contact with the fixed contact.

Abstract: The disclosure relates to a voltage assembly having at least one short circuiting device in which a moving contact piece can be closed onto a fixed contact piece. In order to prevent breakdown at least two separated vacuum zones are arranged along a moving path of the fixed contact piece.

Abstract: A apparatus for detecting a high pressure condition within a high voltage vacuum device includes a microcircuit embedded within the vacuum containment that transmits a wireless signal upon detection of a high pressure condition and/or light generated by arcing between the electrical contacts of the high voltage device. The wireless signal can be transmitted via RF or optical means. The microcircuit is powered by energy sources produced within the vacuum device such as magnetic fields generated by current flow through the device, or light generated by arcing between the contacts. Alternatively, the microcircuit can be powered RF or optical signals transmitted to the microcircuit from outside the vacuum device.

Abstract: A switchgear assembly includes a vacuum interrupt chamber and a short-circuiting system arranged in the vacuum interrupt chamber. To enable rapid switching with physically simple means, a vacuum area of the vacuum interrupt chamber in which a fixed contact piece is placed is subdivided via a membrane, which is provided with a breaking line and which can be penetrated by a moving piston system to the contact piece during switching. The switchgear assembly can be utilized in a low-voltage, medium-voltage or high-voltage assembly.

Abstract: Disclosed is a bushing terminal of a vacuum circuit breaker used for interrupting current, which includes: a terminal body having a cylinder that can be inserted into the interior of a contactor and annular protrusions formed to be protrude from an outer circumferential surface of the cylinder; and a flange having an insertion hole through which the cylinder is inserted, wherein the annular protrusions are plastic-deformed so as to be fixed to the insertion hole of the flange.

Abstract: A apparatus for detecting a high pressure condition within a high voltage vacuum device includes a microcircuit embedded within the vacuum containment that transmits a wireless signal upon detection of a high pressure condition and/or light generated by arcing between the electrical contacts of the high voltage device. The wireless signal can be transmitted via RF or optical means. The microcircuit is powered by energy sources produced within the vacuum device such as magnetic fields generated by current flow through the device, or light generated by arcing between the contacts. Alternatively, the microcircuit can be powered RF or optical signals transmitted to the microcircuit from outside the vacuum device.

Abstract: A method for detecting a high pressure condition within a high voltage vacuum device includes detecting the position of a movable structure such as a bellows. The position at high pressures can be detected optically by the interruption of a light beam reflected by a hemispherically shaped reflector. The hemispherical reflector allows the source light fiber to oriented parallel to the detection light fiber, providing a more compact and efficient fiber routing.

Abstract: A method for detecting a high pressure condition within a high voltage vacuum device includes detecting the position of a movable structure such as a bellows. The position at high pressures can be detected optically by the interruption of a light beam reflected by a hemispherically shaped reflector. The hemispherical reflector allows the source light fiber to oriented parallel to the detection light fiber, providing a more compact and efficient fiber routing.

Abstract: A method for detecting a high pressure condition within an interrupter includes measuring the intensity of light emitted from an arc created by contacts within the interrupter, comparing the measured intensity with a predetermined value, and providing an indication when the measured intensity exceeds the predetermined value.

Abstract: A high voltage electric switch includes an insulated housing with an opening therethrough and an interior surface. The housing has an upper open end and a lower open end. A conductive upper terminal pad has a downwardly extending bar, wherein the upper terminal pad encloses the upper open end. A vacuum interrupter has a stationary stem that is electrically connected to the bar, and a moving stem extending in a direction opposite the stationary stem. A dielectric material is permanently bonded to at least a portion of the vacuum interrupter and substantially fills any voids between the vacuum interrupter and the interior surface. The dielectric material and the vacuum interrupter are selectively removable from the housing when the upper terminal pad is removed. A moving end assembly is connected to the moving stem and includes a highly conductive outer sleeve which receives a high strength inner sleeve having a cross-hole therethrough.

Abstract: A terminal structure of a vacuum circuit breaker is capable of effectively radiating heat when conducting electricity.

Abstract: The current interchange includes a housing disposed on a high voltage circuit interrupter. The movable switch contact extends into the housing with a guide member attached to the end of the movable switch contact. The housing includes a base attached to one of the terminals of the interrupter and includes a pair of guide rods extending into the housing for guiding engagement with the guide member. A pair of electrical cables extend helically around the guide rods and have one end attached to the base and another end attached to the guide member to provide an electrical path between the movable switch contact and the terminal. The electrical cables produce an axial magnetic field which maintains the metallic vapor produced by the interruption of the circuit between the contacts to reduce the transport of ions from the gap and reduce the current chop.

Abstract: A vacuum switch has a vacuum interrupter which can be actuated by a drive device using a lever arrangement. A two-armed drive lever is mounted in a pivotable fashion on the displaceable connection bolt of the vacuum interrupter and interacts with a stop face against which the drive lever can be rested by a contact spring. In order to compensate contact-breaking forces, a loop-shaped, flexible strip conductor is used which is arranged between the two legs of the drive lever in such a way that one leg of the strip conductor rests on a central part of the drive lever while the other leg is supported in a fixed manner. The current-loop and lever assembly is suitable for the construction of compact power switches.