Abstract: An electrical device including a first cylindrical capacitor, a first terminal electrically coupled to one end of the first capacitor, a first electrical line electrically coupled to the first terminal and a first annular conductive end shield formed over the first terminal and being electrically coupled to the first terminal and the one end of the first capacitor, where the first end shield has a greater diameter than the diameter of the first capacitor. The device also includes a second cylindrical capacitor, a second terminal electrically coupled to one end of the second capacitor, a second electrical line electrically coupled to the second terminal and a second annular conductive end shield formed over the second terminal and being electrically coupled to the second terminal and the one end of the second capacitor, where the second end shield has a greater diameter than the diameter of the second capacitor.

Abstract: A transformer assembly including a transformer that is part of an underground residential power distribution circuit and that provides fault isolation and restoration. The transformer assembly includes an enclosure enclosing a primary winding and a secondary winding. The transformer assembly also includes first and second switching devices mounted to a panel of the enclosure, where each switching device includes an outer housing, a transformer interface electrically coupled to the primary winding, a connector interface electrically coupled to a first connector and a vacuum interrupter having a fixed contact and a movable contact. The fixed contact is electrically coupled to the connector interface or the transformer interface and the movable terminal is electrically coupled to the other connector interface or the transformer interface.

Abstract: An insulating rotary diaphragm for a vacuum interrupter (VI) electrical switch. The insulating diaphragm is designed for use in underground or pad-mounted VI switches where an external lever is rotated by a line worker to manually open the switch. A torsional insulating rod is coupled between a switch actuator and the external lever, and the diaphragm maintains constant contact with the insulating rod and an outer housing when the lever and rod are rotated, thus ensuring adequate isolation between the actuator and the lever. The diaphragm deforms torsionally when the lever and rod are rotated. This configuration allows the actuator to be at medium voltage, eliminates the need for a translational insulating rod between the medium voltage switch components and the lever, and thereby reduces the overall length of the VI switch.

Abstract: A switching device that is part of a transformer in an underground residential power distribution circuit and provides fault isolation and restoration. The switching device includes a transformer interface for coupling the device to the transformer and a connector interface for coupling the device to a connector. The device also includes a vacuum interrupter having a fixed terminal and a movable terminal, where the fixed terminal is electrically coupled to the connector interface and the movable terminal is electrically coupled to the transformer interface. A control rod is coupled to the movable terminal, an actuator assembly is coupled to the control rod and is operable to move the control rod to open and close the vacuum interrupter. A capacitor is electrically coupled to the fixed terminal, and provides an interface for power line communications signals, voltage sensing, help determine power flow direction and help determine the distance to a fault.

Abstract: An insulating rotary diaphragm for a vacuum interrupter (VI) electrical switch. The insulating diaphragm is designed for use in underground or pad-mounted VI switches where an external lever is rotated by a line worker to manually open the switch. A torsional insulating rod is coupled between a switch actuator and the external lever, and the diaphragm maintains constant contact with the insulating rod and an outer housing when the lever and rod are rotated, thus ensuring adequate isolation between the actuator and the lever. The diaphragm deforms torsionally when the lever and rod are rotated. This configuration allows the actuator to be at medium voltage, eliminates the need for a translational insulating rod between the medium voltage switch components and the lever, and thereby reduces the overall length of the VI switch.

Abstract: A fault interrupting switching device that is part of a transformer in an underground residential power distribution circuit and provides fault isolation and restoration. The switching device includes a vacuum interrupter having a fixed terminal and a movable terminal, where the fixed terminal is electrically coupled to a transformer interface and the movable terminal is electrically coupled to a connector interface. A control rod is coupled to the movable terminal and an actuator assembly is coupled to the control rod and is operable to move the control rod to open and close the vacuum interrupter. An electronics assembly electrically is coupled to the movable terminal, and includes a high voltage capacitor and an energy storage capacitor, where the high voltage capacitor provides power to operate the actuator when the vacuum interrupter is open and the energy storage capacitor provides power to the electronics assembly when the vacuum interrupter is closed.

Abstract: A switching device that is part of a transformer in an underground residential power distribution circuit and provides fault isolation and restoration. The switching device includes a transformer interface for coupling the device to the transformer and a connector interface for coupling the device to a connector. The device also includes a vacuum interrupter having a fixed terminal and a movable terminal, where the fixed terminal is electrically coupled to the connector interface and the movable terminal is electrically coupled to the transformer interface. A control rod is coupled to the movable terminal, an actuator assembly is coupled to the control rod and is operable to move the control rod to open and close the vacuum interrupter. A capacitor is electrically coupled to the fixed terminal, and provides an interface for power line communications signals, voltage sensing, help determine power flow direction and help determine the distance to a fault.

Abstract: A transformer assembly including a transformer that is part of an underground residential power distribution circuit and that provides fault isolation and restoration. The transformer assembly includes an enclosure enclosing a primary winding and a secondary winding. The transformer assembly also includes first and second switching devices mounted to a panel of the enclosure, where each switching device includes an outer housing, a transformer interface electrically coupled to the primary winding, a connector interface electrically coupled to a first connector and a vacuum interrupter having a fixed contact and a movable contact. The fixed contact is electrically coupled to the connector interface or the transformer interface and the movable terminal is electrically coupled to the other connector interface or the transformer interface.

Abstract: A cable adapter that is operable to electrically couple an existing switchgear cable used for old switchgear to a connection location on new switchgear. The adapter includes an elbow portion that is configured to be electrically coupled to a connector for the switchgear cable and an extension portion that is electrically coupled to the elbow portion. The adapter also includes a cylindrical connection portion electrically coupled to the extension portion and being configured to be electrically coupled to the new switchgear at the proper location. In one embodiment, the elbow portion, the extension portion and the connection portion combine as a single piece member including an internal conductor, a dielectric insulation rubber layer covering the internal conductor and an outer semi-conductive rubber layer covering the insulation layer, where the rubber layers are molded over the conductor.

Abstract: An air-termination adapter that encloses an air-termination connection assembly to electrically isolate components that are at hazardous voltages and allow the air-termination connection assembly to be coupled to a dead-front termination for electrical equipment. In one embodiment, the adapter includes an outer body having a lower conical section, a middle cylindrical section and an upper cylindrical connection section all defining an internal chamber. The air-termination connection assembly extends into the chamber from the bottom of the lower section and is coupled to a connector rod at one end. The connector rod is coupled to a connector associated with a conical interface in the connection section to provide the dead-front termination to the electrical equipment.

Abstract: An air-termination adapter that encloses an air-termination connection assembly to electrically isolate components that are at hazardous voltages and allow the air-termination connection assembly to be coupled to a dead-front termination for electrical equipment. In one embodiment, the adapter includes an outer body having a lower conical section, a middle cylindrical section and an upper cylindrical connection section all defining an internal chamber. The air-termination connection assembly extends into the chamber from the bottom of the lower section and is coupled to a connector rod at one end. The connector rod is coupled to a connector associated with a conical interface in the connection section to provide the dead-front termination to the electrical equipment.

Abstract: A cable adapter that is operable to electrically couple an existing switchgear cable used for old switchgear to a connection location on new switchgear. The adapter includes an elbow portion that is configured to be electrically coupled to a connector for the switchgear cable and an extension portion that is electrically coupled to the elbow portion. The adapter also includes a cylindrical connection portion electrically coupled to the extension portion and being configured to be electrically coupled to the new switchgear at the proper location. In one embodiment, the elbow portion, the extension portion and the connection portion combine as a single piece member including an internal conductor, a dielectric insulation rubber layer covering the internal conductor and an outer semi-conductive rubber layer covering the insulation layer, where the rubber layers are molded over the conductor.

Abstract: A conductor assembly for establishing a connection to a power distribution unit is disclosed. The conductor assembly includes one or more conductors have a conductive rod. Each end of the conductive rod has an end forming a ball member. The conductor assembly also includes a connector having a clamp mechanism to receive the ball member of the conductive rod. A fastener threadably couples with a conductor on power distribution unit to rigidly secure the conductor assembly to the electrical equipment units.

Abstract: A conductor assembly for establishing a connection to a power distribution unit is disclosed. The conductor assembly includes one or more conductors have a conductive rod. Each end of the conductive rod has an end forming a ball member. The conductor assembly also includes a connector having a clamp mechanism to receive the ball member of the conductive rod. A fastener threadably couples with a conductor on power distribution unit to rigidly secure the conductor assembly to the electrical equipment units.

Abstract: A busbar assembly for interconnecting electrical equipment units is disclosed. The busbar assembly includes one or more conductors have a conductive rod. Each end of the conductive rod has an end forming a ball member. The busbar assembly also includes two or more connectors having a clamp mechanism to receive the ball member of the conductive rod. A fastener threadably couples with a conductor on an electrical equipment unit to rigidly secure the busbar assembly to the electrical equipment units.

Abstract: An electrical equipment connector having a replaceable bushing for an electrical power connector is disclosed. The replaceable bushing includes an insulator body having a tapered exterior surface formed on the first end, and a tapered interior surface formed in a second end. A conductor body extends through the insulator body and has a through bore with a counterbore at one end. A captured bolt in the counterbore engages a threaded tap in a conductor body disposed in the housing such that the tapered interior surface fits over and conforms to a tapered exterior surface on the housing connector.

Abstract: A busbar assembly for interconnecting electrical equipment units is disclosed. The busbar assembly includes one or more conductors have a conductive rod. Each end of the conductive rod has an end forming a ball member. The busbar assembly also includes two or more connectors having a clamp mechanism to receive the ball member of the conductive rod. A fastener threadably couples with a conductor on an electrical equipment unit to rigidly secure the busbar assembly to the electrical equipment units.

Abstract: An electrical equipment connector having a replaceable bushing for an electrical power connector is disclosed. The replaceable bushing includes an insulator body having a tapered exterior surface formed on the first end, and a tapered interior surface formed in a second end. A conductor body extends through the insulator body and has a through bore with a counterbore at one end. A captured bolt in the counterbore engages a threaded tap in a conductor body disposed in the housing such that the tapered interior surface fits over and conforms to a tapered exterior surface on the housing connector.

Abstract: A method and arrangement is provided to form a gas-tight joint between an end flange and a tubular rod. The joint is formed via a heat-shrink process to provide an interference fit. The rod is provided with grooves to retain adhesive during the assembly process.

Abstract: A method and arrangement is provided to form a gas-tight joint between an end flange and a tubular rod. The joint is formed via a heat-shrink process to provide an interference fit. The rod is provided with grooves to retain adhesive during the assembly process.