A method of manufacturing a capacitive electrical device is disclosed. The method includes a) bonding a first electrical insulation film with a second electrical insulation film to obtain a single electrical insulation film that has a larger surface area than any of the first electrical insulation film and the second electrical insulation film has alone, b) providing a conductive layer onto the single electrical insulation film, and c) winding the single electrical insulation film and the conductive layer around a shaft to obtain a layer of the single electrical insulation film and a layer of the conductive layer wound onto the shaft, thereby forming the capacitive electrical device.

A method of manufacturing a capacitive electrical device is disclosed. The method includes a) bonding a first electrical insulation film with a second electrical insulation film to obtain a single electrical insulation film that has a larger surface area than any of the first electrical insulation film and the second electrical insulation film has alone, b) providing a conductive layer onto the single electrical insulation film, and c) winding the single electrical insulation film and the conductive layer around a shaft to obtain a layer of the single electrical insulation film and a layer of the conductive layer wound onto the shaft, thereby forming the capacitive electrical device.

Disclosed are an insulated pipe and an insulated bushing. The insulated bushing (1000) includes: an insulator (110) including an intermediate shed member (112), and a lower flange (114) arranged on a lower end of the shed member; a head member (120) connected to an upper end of the insulator, wherein the head member includes an oil conservator (121) connected to the upper end of the insulator and a connecting terminal (122) connected to the oil conservator; and an insulated pipe (100) connected to the lower flange, wherein the insulated pipe includes a upper transformer pipe (101) and a lower oil-immersed pipe (102), and the transformer pipe includes an inner pipe (103), and a conductive layer arranged outside the inner pipe and configured to be grounded. The insulated pipe and the insulated bushing solve the problems of connection and sealing, and save material cost greatly.

A feedthrough includes a first printed circuit board, a first flexible conductive element coupled to and extending from an edge of the first printed circuit board, a second printed circuit board, and a second flexible conductive element coupled to and extending from an edge of the second printed circuit board.

A feedthrough includes a first printed circuit board, a first flexible conductive element coupled to and extending from an edge of the first printed circuit board, a second printed circuit board, and a second flexible conductive element coupled to and extending from an edge of the second printed circuit board.

A multifunctional capacitive-type sleeve with a vacuum arc-extinguishing chamber comprises a sleeve insulation core covered outside the vacuum arc-extinguishing chamber, wherein one ends of two connection terminals are respectively led out from the two ends of the sleeve insulation core, and the other ends of the two connection terminals can be contacted and separated in the vacuum arc-extinguishing chamber to switch on and off a circuit. The multifunctional capacitive-type sleeve with a vacuum arc-extinguishing chamber according to the present invention not only has the function of a sleeve, but also has the function of a disconnector, the sleeve insulation core is internally provided with a vacuum arc-extinguishing chamber to switch on and off the circuit, which can simplify structures of a high-voltage switch and a control cabinet, reduce the device volume, and decrease the device cost.

A multifunctional capacitive-type sleeve with a vacuum arc-extinguishing chamber comprises a sleeve insulation core covered outside the vacuum arc-extinguishing chamber, wherein one ends of two connection terminals are respectively led out from the two ends of the sleeve insulation core, and the other ends of the two connection terminals can be contacted and separated in the vacuum arc-extinguishing chamber to switch on and off a circuit. The multifunctional capacitive-type sleeve with a vacuum arc-extinguishing chamber according to the present invention not only has the function of a sleeve, but also has the function of a disconnector, the sleeve insulation core is internally provided with a vacuum arc-extinguishing chamber to switch on and off the circuit, which can simplify structures of a high-voltage switch and a control cabinet, reduce the device volume, and decrease the device cost.

A system includes a capacitor including: a structure, and one or more capacitive devices at the structure; and an electrically insulating bushing including: a fuse including: a fuse body including a fuse housing, a first fuse end, and a second fuse end, the fuse housing extending from the first fuse end to the second fuse end and defining an interior space, and a fusible element in the interior space, the fusible element electrically connected to the first fuse end and the second fuse end; and an adaptor including: an adaptor body extending from a first adaptor end to a second adaptor end, the adaptor body hermetically sealed to the structure and the second adaptor end configured to receive the first fuse end, and an adaptor connection interface in the adaptor body. The first fuse end is removably connected to the adaptor at the adaptor connection interface.

A system includes a capacitor including: a structure, and one or more capacitive devices at the structure; and an electrically insulating bushing including: a fuse including: a fuse body including a fuse housing, a first fuse end, and a second fuse end, the fuse housing extending from the first fuse end to the second fuse end and defining an interior space, and a fusible element in the interior space, the fusible element electrically connected to the first fuse end and the second fuse end; and an adaptor including: an adaptor body extending from a first adaptor end to a second adaptor end, the adaptor body hermetically sealed to the structure and the second adaptor end configured to receive the first fuse end, and an adaptor connection interface in the adaptor body. The first fuse end is removably connected to the adaptor at the adaptor connection interface.

A method for forming an article of manufacture using additive manufacturing, includes: a processor executing program instructions to: (a) rotate an object continuously about a horizontal axis using a first rotational stage, wherein the object is partially submerged in a bath of energy curable liquid formulation during the rotation; (b) control a rate of rotation of the object to achieve a desired radial thickness of a sub layer of uncured liquid formulation at a desired rotational location on the object; (c) direct an energy source to provide an energy dose onto the object at a desired rotational location, wherein the energy dose is configured to cure and solidify the sub layer; and repeat (a), (b) and (c) until a desired radial thickness of a cured liquid formulation layer is a achieved.