Abstract: An insulator arrangement for supporting a conductor with an enclosure has an insulator fixedly connected at one end with the conductor. The insulator has another end portion mounted to a first shock absorber. The first shock absorber is further mounted with an access cover to permit displacement of the conductor and the insulator relative to the access cover. The insulator arrangement has second shock absorbers mounting the access cover to the enclosure permitting relative displacement between the access cover, which supports the insulator and conductor, and the enclosure.

Abstract: A polyphase bus bar mounting structure mounted to a support structure is disclosed. The support structure may comprise any of a rack, wall or a segment of a wind turbine tower. The polyphase bus bar mounting structure has a plurality of cylindrical tubular conductors arranged substantially parallel to each other. Each of the tubular conductors has first and second opposing end portions adapted for connection with conductors of other polyphase bus bar mounting structures. Insulation surrounds each of the tubular conductor. The bus bar mounting structure has first and second connectors. The first connector fixedly mounts the cylindrical tubular conductors adjacent the first end portions thereof to the support structure. The second connector flexibly mounts the cylindrical tubular conductors adjacent the second end portions thereof to the support structure.

Abstract: A reversing switch for use in a multi-phase electrical system, and in particular a three phase electrical system has a conductor for linking the input and output of one of the three phases. The reversing switch has two phase switches for reversing polarity. Each phase switch has a pair of stationary contacts and a moveable contact for reversing phase by switching between the stationary contacts. The moveable contacts of each phase switch are moveable in unison by a motor and associated transmission during switching of the reversing switch between first and second modes of operation of opposite polarity.

Abstract: An insulator arrangement for supporting a conductor with an enclosure has an insulator fixedly connected at one end with the conductor. The insulator has another end portion mounted to a first shock absorber. The first shock absorber is further mounted with an access cover to permit displacement of the conductor and the insulator relative to the access cover. The insulator arrangement has second shock absorbers mounting the access cover to the enclosure permitting relative displacement between the access cover, which supports the insulator and conductor, and the enclosure.

Abstract: A polyphase bus bar mounting structure mounted to a support structure is disclosed. The support structure may comprise any of a rack, wall or a segment of a wind turbine tower. The polyphase bus bar mounting structure has a plurality of cylindrical tubular conductors arranged substantially parallel to each other. Each of the tubular conductors has first and second opposing end portions adapted for connection with conductors of other polyphase bus bar mounting structures. Insulation surrounds each of the tubular conductor. The bus bar mounting structure has first and second connectors. The first connector fixedly mounts the cylindrical tubular conductors adjacent the first end portions thereof to the support structure. The second connector flexibly mounts the cylindrical tubular conductors adjacent the second end portions thereof to the support structure.

Abstract: A power plant has a generator that is cooled by hydrogen gas. The power plant has a terminal compartment for housing stator terminals of the generator and conductor connections of a main bus taking electrical power away from the power plant. The power plant has a generator auxiliary equipment compartment that is distinct from the terminal compartment. The generator auxiliary equipment compartment receives tap connections that draw power from the main bus. The main bus comprises isolated phase bus duct, one for each phase. Electrically insulating sealing bushings are located in each phase of the isolated phase bus duct between the connections with the stator terminals and the tap connections to seal against the escape of hydrogen gas from the terminal compartment into the generator auxiliary equipment compartment.

Abstract: A switch has a first electrical terminal, a second electrical terminal spaced from the first electrical terminal and an elongate conductive switch blade for bridging the terminals. The switch blade has a first end portion pivotally connected with the first electrical terminal for movement of the switch blade between open and closed positions. The switch blade has a second end portion positioned adjacent the second electrical terminal when in the closed position. A plurality of elongate fingers are secured by spring loading to the second end portion of the switch blade. The fingers are arranged adjacent to each other along opposing sides of the second end portion to form an open jaw structure that extends from the second end portion of the switch blade and makes wiping electrical contact with the second electrical terminal as the switch blade is moved into the closed position.

Abstract: A switch has a first electrical terminal, a second electrical terminal spaced from the first electrical terminal and an elongate conductive switch blade for bridging the terminals. The switch blade has a first end portion pivotally connected with the first electrical terminal for movement of the switch blade between open and closed positions. The switch blade has a second end portion positioned adjacent the second electrical terminal when in the closed position. A plurality of elongate fingers are secured by spring loading to the second end portion of the switch blade. The fingers are arranged adjacent to each other along opposing sides of the second end portion to form an open jaw structure that extends from the second end portion of the switch blade and makes wiping electrical contact with the second electrical terminal as the switch blade is moved into the closed position.

Abstract: A power plant has a generator that is cooled by hydrogen gas. The power plant has a terminal compartment for housing stator terminals of the generator and conductor connections of a main bus taking electrical power away from the power plant. The power plant has a generator auxiliary equipment compartment that is distinct from the terminal compartment. The generator auxiliary equipment compartment receives tap connections that draw power from the main bus. The main bus comprises isolated phase bus duct, one for each phase. Electrically insulating sealing bushings are located in each phase of the isolated phase bus duct between the connections with the stator terminals and the tap connections to seal against the escape of hydrogen gas from the terminal compartment into the generator auxiliary equipment compartment.