A bushing comprises an electrical conductor and a condenser body through which the electrical conductor extends, wherein the condenser body comprises electrically insulating layers and electrically conducting layers, wherein the electrically insulating layers comprise an oil-impregnated paper comprising at least one of a thermally upgraded paper and a paper comprising synthetic fibers.

Disclosed is a capacitor bushing and a method of manufacturing the same. The capacitor bushing includes insulating layers (20), formed by winding insulating fibers (22) around the outer side of a central conductor (10), and conductive layers (30) between the insulating layers (20). The wefts (34) and warps (36) that constitute the conductive fibers (32) are manufactured by sequentially forming a first coating layer (38) and a second coating layer (38) on the surface of a core wire (37). The wefts (24 and 34) and the warps (26 and 36) of the insulating fibers (22) and the conductive fibers (32) extend obliquely with respect to the longitudinal direction of the central conductor (10). The wefts (24 and 34) and the warps (26 and 36) form a polygonal or circular shape. The present invention has a merit in that bubbles are prevented from being generated in the filling layers (40).

Disclosed is a capacitor bushing and a method of manufacturing the same. The capacitor bushing includes insulating layers (20), formed by winding insulating fibers (22) around the outer side of a central conductor (10), and conductive layers (30) between the insulating layers (20). The wefts (34) and warps (36) that constitute the conductive fibers (32) are manufactured by sequentially forming a first coating layer (38) and a second coating layer (38) on the surface of a core wire (37). The wefts (24 and 34) and the warps (26 and 36) of the insulating fibers (22) and the conductive fibers (32) extend obliquely with respect to the longitudinal direction of the central conductor (10). The wefts (24 and 34) and the warps (26 and 36) form a polygonal or circular shape. The present invention has a merit in that bubbles are prevented from being generated in the filling layers (40).

A high-voltage device has an inner conductor and an insulating member that surrounds the inner conductor along the longitudinal direction thereof. In order to increase the reliability of the high-voltage device, at least one optical waveguide rests against the inner conductor in at least some sections, extends out of the insulating member and can be connected to an evaluation unit for recording measured temperature values. Furthermore a method measures a temperature of the inner conductor of the high-voltage device.

A high-voltage device has an inner conductor and an insulating member that surrounds the inner conductor along the longitudinal direction thereof. In order to increase the reliability of the high-voltage device, at least one optical waveguide rests against the inner conductor in at least some sections, extends out of the insulating member and can be connected to an evaluation unit for recording measured temperature values. Furthermore a method measures a temperature of the inner conductor of the high-voltage device.

The present disclosure relates to a wound electrical component comprising a wound body comprising a plurality of wound layers of a web of an electrically insulating material around a longitudinal axis of the body. The wound body comprises a plurality of electrically conducting layers of an electrically conducting material, each printed onto a respective separate area of the web in the wound body. An edge zone of at least one of the plurality of electrically conducting layers is connected to a printed high permittivity layer of a high permittivity material along said edge zone such that at least a part of the high permittivity layer extends, printed on the web, beyond the edge zone.

The present disclosure relates to a wound electrical component comprising a wound body comprising a plurality of wound layers of a web of an electrically insulating material around a longitudinal axis of the body. The wound body comprises a plurality of electrically conducting layers of an electrically conducting material, each printed onto a respective separate area of the web in the wound body. An edge zone of at least one of the plurality of electrically conducting layers is connected to a printed high permittivity layer of a high permittivity material along said edge zone such that at least a part of the high permittivity layer extends, printed on the web, beyond the edge zone.

A bushing for a power system, comprising: a conductor, and a condenser core, wherein the condenser core comprises a dielectric sheet and a plurality of disjoint regions of electrically conducting material provided on the dielectric sheet, wherein the dielectric sheet and the electrically conducting material form a wound structure around the conductor, wherein in at least one region the electrically conducting material is a semiconducting material, wherein the semiconducting material extends more than one turn around the conductor, whereby the at least one region has overlapping edges in the radial direction, and wherein the dielectric sheet extends between the overlapping edges whereby a capacitance is formed between the overlapping edges, which capacitance is partly defined by an overlap length of the overlapping edges and which capacitance forms part of a resonance circuit of the at least one region, wherein the overlap length is such that the resonance circuit has a resonance frequency contained in a very fast transient, VFT, spectrum.

A bushing for a power system, comprising: a conductor, and a condenser core, wherein the condenser core comprises a dielectric sheet and a plurality of disjoint regions of electrically conducting material provided on the dielectric sheet, wherein the dielectric sheet and the electrically conducting material form a wound structure around the conductor, wherein in at least one region the electrically conducting material is a semiconducting material, wherein the semiconducting material extends more than one turn around the conductor, whereby the at least one region has overlapping edges in the radial direction, and wherein the dielectric sheet extends between the overlapping edges whereby a capacitance is formed between the overlapping edges, which capacitance is partly defined by an overlap length of the overlapping edges and which capacitance forms part of a resonance circuit of the at least one region, wherein the overlap length is such that the resonance circuit has a resonance frequency contained in a very fast transient, VFT, spectrum.

A large-capacitance insulating core, a high-voltage electrical appliance and a multi-functional high-voltage bushing. The insulating core is internally provided with a capacitance increasing structure. The capacitance increasing structure is a plurality of capacitive screen sets formed by a forward capacitive screen set and a reverse capacitive screen set that are alternatively arranged and in parallel connection. The forward capacitive screen set includes a plurality of capacitive screens arranged alternatively with insulating layers, an innermost capacitive screen of the forward capacitive screen set is connected to a high potential, and an outermost capacitive screen is connected to a low potential. The reverse capacitive screen set includes a plurality of capacitive screens arranged alternatively with insulating layers, an innermost capacitive screen of the reverse capacitive screen set is connected to a low potential, and an outermost capacitive screen is connected to a high potential; and an innermost capacitive screen set and an outermost capacitive screen set in the plurality of capacitive screen sets of the capacitance increasing structure are both the forward capacitive screen sets, and can satisfy the voltage-sharing and large-capacitance requirements simultaneously. The high-voltage electrical appliance and the multi-functional high-voltage bushing include the large-capacitance insulating core.