Abstract: A bushing structure for a switchgear includes a mounting portion constructed and arranged to mount the bushing structure. A barrel portion extends from the mounting portion and is coaxial there-with. The barrel portion includes a plurality of undulations in a peripheral surface thereof to increase creepage distance. A primary contact is disposed within and extends a length of the barrel portion. The primary contact has a first end constructed and arranged to be contacted by a movable contact of the switchgear and a second end constructed and arranged to be connected with a busbar.

Abstract: A switchgear includes a circuit breaker housing defining a circuit breaker compartment. A bushing has first and second portions and extends through an opening in a rear wall of the housing so that the first portion is disposed in the circuit breaker compartment and the second portion is disposed beyond the exterior of the rear wall and external of the circuit breaker compartment. The bushing has a hollow primary contact. A current transformer is mounted on the second portion of the bushing. A fastener structure has a portion that extends through the hollow primary contact. The fastener structure couples the primary contact to a busbar in a removable manner. When the fastener structure is decoupled from the primary contact, the bushing and the at least one current transform can be accessed from the front of the housing and moved through the opening in the rear wall, for maintenance.

Abstract: A switchgear includes a circuit breaker housing defining a circuit breaker compartment. A bushing has first and second portions and extends through an opening in a rear wall of the housing so that the first portion is disposed in the circuit breaker compartment and the second portion is disposed beyond the exterior of the rear wall and external of the circuit breaker compartment. The bushing has a hollow primary contact. A current transformer is mounted on the second portion of the bushing. A fastener structure has a portion that extends through the hollow primary contact. The fastener structure couples the primary contact to a busbar in a removable manner. When the fastener structure is decoupled from the primary contact, the bushing and the at least one current transform can be accessed from the front of the housing and moved through the opening in the rear wall, for maintenance.

Abstract: Side panels for a compartment of a switchgear include a first panel structure and a second panel structure that is identical to the first panel structure. Each panel structure has a body with symmetric surface features in the body. Certain of the surface features are offset from a plane of symmetry of the body. The first panel structure is constructed and arranged to define a left side of the compartment and the second panel structure, upon proper orientation, is constructed and arranged to define an opposing, right side of the compartment.

Abstract: A switchgear includes a housing having a wall separating a circuit breaker compartment from a bus/cable compartment. A plurality of bushings is provided. Each bushing has first and second portions. Each bushing extends through the wall so that the first portion is disposed in the circuit breaker compartment and the second portion is disposed in the bus/cable compartment. Each second portion has an extension. At least one current transformer is mounted on the extension of the second portion of each bushing. The extensions are constructed and arranged so that a phase to phase distance is 180 mm or less. Such a configuration also decreased the overall size of the switchgear.

Abstract: A bushing structure for a switchgear includes a mounting portion constructed and arranged to mount the bushing structure. A barrel portion extends from the mounting portion and is coaxial there-with. The barrel portion includes a plurality of undulations in a peripheral surface thereof to increase creepage distance. A primary contact is disposed within and extends a length of the barrel portion. The primary contact has a first end constructed and arranged to be contacted by a movable contact of the switchgear and a second end constructed and arranged to be connected with a busbar.

Abstract: Side panels for a compartment of a switchgear include a first panel structure and a second panel structure that is identical to the first panel structure. Each panel structure has a body with symmetric surface features in the body. Certain of the surface features are offset from a plane of symmetry of the body. The first panel structure is constructed and arranged to define a left side of the compartment and the second panel structure, upon proper orientation, is constructed and arranged to define an opposing, right side of the compartment.

Abstract: Isolation structure is provided for electrically isolating a busbar mounted to a post insulator by a fastener via a busbar mounting hole. The busbar has insulating material covering the busbar except for surfaces defining the mounting hole. The isolation structure includes an electrically insulating sleeve constructed and arranged to be disposed around a portion of a periphery of the fastener and to be received in the busbar mounting hole. At least first and second electrically insulating washers each have a bore that receives the insulating sleeve. The insulating washers are constructed and arranged to engage with the surfaces defining the mounting hole on opposing sides of the busbar so as to sandwich the busbar between the first and second insulating washers.

Abstract: A switchgear includes a housing having a wall separating a circuit breaker compartment from a bus/cable compartment. A plurality of bushings is provided. Each bushing has first and second portions. Each bushing extends through the wall so that the first portion is disposed in the circuit breaker compartment and the second portion is disposed in the bus/cable compartment. Each second portion has an extension. At least one current transformer is mounted on the extension of the second portion of each bushing. The extensions are constructed and arranged so that a phase to phase distance is 180 mm or less. Such a configuration also decreased the overall size of the switchgear.

Abstract: In a multi-axis machine tool comprising a first slide way (2a) and a second slide way (2b) set apart one from the other and extending parallel along a longitudinal axis (X), a machining station (3) delimited laterally by the slide ways (2a, 2b), a cross member (4) presenting opposite ends (4a, 4b) each coupled to a respective slide way (2a, 2b), and a machining head (5) mounted to the cross member (4) and positionable over the machining station (3), at least the cross member (4) is fashioned from a low thermal expansion material.

Abstract: In a multi-axis machine tool comprising a first slide way (2a) and a second slide way (2b) set apart one from the other and extending parallel along a longitudinal axis (X), a machining station (3) delimited laterally by the slide ways (2a, 2b), a cross member (4) presenting opposite ends (4a, 4b) each coupled to a respective slide way (2a, 2b), and a machining head (5) mounted to the cross member (4) and positionable over the machining station (3), at least the cross member (4) is fashioned from a low thermal expansion material.

Abstract: In a multi-axis machine tool comprising a slide way aligned on a longitudinal axis, a traveling column coupled via one end with the slide way, an arm mounted slidably to the column and traversable at least in a first direction normal to the longitudinal axis of the slide way, and a machining head carried by the arm, the material used for the arm is one typified by low thermal expansion.

Abstract: In a multi-axis machine tool comprising a slide way aligned on a longitudinal axis, a traveling column coupled via one end with the slide way, an arm mounted slidably to the column and traversable at least in a first direction normal to the longitudinal axis of the slide way, and a machining head carried by the arm, the material used for the arm is one typified by low thermal expansion.