The present invention provides an arc-extinguishing device, including an arc-extinguishing chamber, where the arc-extinguishing chamber includes a support, a plurality of arc-extinguishing grid sheets, a first gas-evolving hood, and a second gas-evolving hood; the plurality of arc-extinguishing grid sheets are mounted on the supports, the arc-extinguishing grid sheet has a groove to form a moving track for a moving contact, both sides of the groove extend toward the moving contact respectively to form a first extension leg and a second extension leg, an end and an inner side of the first extension leg are wrapped by the first gas-evolving hood, and an end and an inner side of the second extension leg are wrapped by the second gas-evolving hood; a surface of the gas-evolving hood extending along the inner side of the extension leg toward the groove is referred to as a wrapping surface.

A high voltage center break disconnect switch with two rotatable switch blades each operatively attached to a respective rotatable insulator for opening and closing the switch. A toggle locking drive assembly including a two-sided lever having three pivot points colinearly aligned thereon and two drive links each connected at one end thereof to one of the three pivot points. The two-sided lever connects at the third pivot point to a perpendicularly attached rotating shaft operatively connected to a drive pipe for opening and closing the switch. The drive links are each connected at the other end to a pivot point of a respective one of two levers each operatively mounted to one of the rotatable insulators. When the switch is in the closed position the five pivot points of the locking toggle drive assembly are aligned colinearly in a toggle lock position preventing the switch from unintended opening.

An opening/closing device of an embodiment has first to third movable contacts, first to third transmission mechanisms, first to third containers, a crankshaft, an operating mechanism, and a shock absorbing mechanism. The first to third movable contacts are accommodated in the first to third containers. The first to third transmission mechanisms are connected to the first to third movable contacts. The first to third containers accommodate at least the first movable contact. The crankshaft operates the first to third transmission mechanisms and changes the first to third movable contacts from a closed state to an open state. The operating mechanism is disposed on the side of the first transmission mechanism to rotate the crankshaft. The shock absorbing mechanism is disposed on the side of the third transmission mechanism to absorb a shock of rotational movement of the crankshaft.

A contact device includes a fixed contact, a movable contact, a housing, and an arc extinguishing member. The movable contact moves between a closed position where the movable contact contacts the fixed contact and an open position where the movable contact is separate from fixed contact. The housing houses the fixed contact and the movable contact. The arc extinguishing member is disposed in the housing and discharges an arc extinguishing gas. The arc extinguishing member is disposed facing a gap between the fixed contact and the movable contact when the movable contact is in the open position. The arc extinguishing member has a shape that tapers toward the gap.

A contact device includes a fixed contact, a movable contact, a housing, and an arc extinguishing member. The movable contact moves between a closed position where the movable contact contacts the fixed contact and an open position where the movable contact is separate from fixed contact. The housing houses the fixed contact and the movable contact. The arc extinguishing member is disposed in the housing and discharges an arc extinguishing gas. The arc extinguishing member is disposed facing a gap between the fixed contact and the movable contact when the movable contact is in the open position. The arc extinguishing member has a shape that tapers toward the gap.

The invention relates to a device for operating a switch having an operating lever for moving the switch between the open and closed position and an operating pin arranged to a moving part of the switch, wherein the device comprises a primary shaft, a secondary shaft arranged coaxially with the primary shaft, a coupling arranged between the primary shaft and the secondary shaft, a spring, a control lever extending in a radial direction from the primary shaft, a latch having a disengage lever extending in a radial direction from the primary shaft and a roller movable into the path of the disengage lever to limit rotation of the primary shaft in the first rotational direction; and, a reset lever extending in a radial direction from the secondary shaft.

A drive unit for driving switching contacts of a high-voltage circuit breaker includes an operating element, and a plurality of actuating elements for actuating the switching contacts, at least two of which are disposed at a distance from one another relative to an axis or shaft. A mechanism or lever mechanism transfers a movement of the operating element into corresponding movements of the actuating elements. The mechanism includes at least one shaft, rotatably mounted on the axis, for transferring the movement of the operating element into the corresponding movement of at least one actuating element which is disposed at a distance from the operating element along the axis. The drive unit has a compensation coupling device for compensating for a delay in the transfer of movement between at least two of the actuating elements disposed at a distance from one another relative to the axis.

An arc chute assembly includes a first arc side and a second arc side opposite and spaced apart from the first arc side, each arc side including a first vertical edge, a second vertical edge, and a debris blocker component at the second vertical edge, where the debris blocker component is disposed proximate to the separable contacts and structured to contain debris generated during an interruption; and a plurality of arc plates disposed between the arc sides, the separable contacts disposed within the plurality of arc plates, each arc plate including a base and two legs each extending from the base and comprising a distal element proximate to the separable contacts, where each arc plate is structured to attract and quench an arc generated upon opening of the separable contacts associated with the interruption and the distal element is structured to accelerate the opening of the separable contacts.

An arc chute assembly includes a first arc side and a second arc side opposite and spaced apart from the first arc side, each arc side including a first vertical edge, a second vertical edge, and a debris blocker component at the second vertical edge, where the debris blocker component is disposed proximate to the separable contacts and structured to contain debris generated during an interruption; and a plurality of arc plates disposed between the arc sides, the separable contacts disposed within the plurality of arc plates, each arc plate including a base and two legs each extending from the base and comprising a distal element proximate to the separable contacts, where each arc plate is structured to attract and quench an arc generated upon opening of the separable contacts associated with the interruption and the distal element is structured to accelerate the opening of the separable contacts.

A vacuum interrupter has a toroidal portion at one or both ends that achieves higher dielectric levels and hence higher interruption levels.