It is provided an interrupter assembly for power distribution systems that is improved in terms of at least one of compactness, durability, synchronicity and dielectric withstand.

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.

A central module for a three-phase electrical switching device, comprising a central plinth intended to bear a central switch module and a front face comprising control/command members for the switching device. The central plinth comprises rear fixing means capable of fixing a rear plinth intended to bear two rear switch modules, lateral fixing means capable of fixing two lateral plinths intended to each bear a lateral switch module, an actuation mechanism intended to actuate a central switch module, and means for transmitting movements of the actuation mechanism toward the rear plinth and the lateral plinths to be able to actuate the rear and lateral switch modules. A three-phase electrical switching device comprising such a central module is also disclosed.

Switch gear for interconnecting a plurality of power transmission lines including a number of high voltage switches arranged in three phase unitized relationship for routing power. The switches are each pre-mounted on a transverse beam which is operatively attached between two oppositely disposed longitudinal parallel beams forming a unitized switch assembly with a common base structure with a transformable parallelogram outer perimeter which may be attached in the field to a support structure. The outer perimeter of the common base structure of the unitized assembly transformable common base can be transformed with a power actuator from a rectangular configuration to a rhomboid configuration that permits the width of the unitized assembly to be reduced so that the assembly can be transported by truck to an installation site and then the switch assembly may be transformed back to the rectangular configuration with the final width for installation at the site.

A switchgear system operable at voltages up to 27 kV includes an enclosure containing atmospheric air and a loadbreak module disposed within the enclosure. The loadbreak module includes a loadbreak module housing made of a solid dielectric material, a vacuum interrupter enclosed within the loadbreak module housing and having a fixed contact and a movable contact, and an interchange electrically connected to the movable contact. The vacuum interrupter is operable to selectively break or establish an electrical pathway between the interchange and a terminal in response to movement of the movable contact relative to the fixed contact. The switchgear system further includes a bushing coupled to the enclosure and a disconnect switch electrically connected in series between the loadbreak module and the bushing. The disconnect switch includes a disconnect switch housing made of a solid dielectric material.

The present invention concerns a gas insulated circuit breaker system. The system comprises a base station, an insulating column, a transition elbow and an interrupting chamber. With the placement of motion transferring mechanisms in the base station and the transition elbow, the system allows the opening and closing of the integrated circuit breaker within the interrupting chamber in a compact and efficient configuration from a link to an external control module in the base station.

A three-position disconnector switch includes: an earthing contact; a power out contact; a power in contact; a first piston; and a second piston. In a connected switch position the first piston makes an electrical connection with the power out contact and the second piston makes an electrical connection with the power out contact and the power in contact. In a disconnected switch position the first piston makes an electrical connection with the power out contact and the second piston makes an electrical connection with the power out contact. In an earthed switch position the first piston makes an electrical connection with the earthing contact and with the power out contact and the second piston makes an electrical connection with the power out contact.

An operating mechanism for opening and closing at least two contacts simultaneously is provided. The operating mechanism includes a base frame and a bridge body having an elongate contact surface with a length and a width. The elongate contact surface is configured to extend in a length direction over and be in contact with operating rods of the at least two contacts. The operating mechanism further includes a first reaction arm extending substantially parallel to the length of the elongate contact surface and a second reaction arm extending parallel to the first reaction arm and at a distance of the first reaction arm in the direction perpendicular to the elongate contact surface. The operating mechanism also includes a rod mechanism of two links and a cam arranged on a shaft.

A medium-voltage switchgear system includes a three-phase circuit breaker having first, second and third single-phase vacuum interrupters connected between respective first, second and third single-phase inputs and first, second and third single-phase outputs. Magnetic actuators are connected to first, second and third single-phase vacuum interrupters, which are configured to receive an interrupt signal and in response, actuate the respective vacuum interrupter connected thereto into an open circuit condition. A controller circuit is connected to each of the first, second and third magnetic actuators and generates an interrupt signal in response to a detected single-phase overcurrent or fault on a single-phase circuit and interrupt that single-phase circuit on which the single-phase overcurrent or fault occurred and maintain power on the remaining two single-phase circuits over which a single-phase overcurrent or fault was not detected.

A circuit breaker includes a pole unit with a first and second electrodes. A linkage also extends from the pole unit. A linear actuator is operably connected to the pole unit. A Thomson coil or other high-speed actuator is also operably connected to the linkage. When the circuit breaker is closed, no gap is provided between them. To open the electrodes, the high-speed actuator first acts on the linkage by moving the linkage at a speed that is greater than a speed by which the linear actuator can move the linkage. The linear actuator can then actuate and increase a distance between the electrodes. A gap is provided between the pole unit and at least one of the actuators when the breaker is closed. This gap is reduced or eliminated when the breaker is open.