53results about How to "Reduced current carrying capacity" patented technology

A connection arrangement having an outer conductive structure arranged at least partly or completely in a cutout of an electrical insulation layer is provided. An inner conductive structure is arranged at the bottom of the cutout on one side of the insulation layer. The inner conductive structure adjoins the outer conductive structure in a contact zone. A contact area is arranged at the outer conductive structure on the other side of the cutout. The contact zone and the contact area do not overlap. The bottom of the cutout is arranged to overlaps at least half of the contact area, to provide a step in the insulation layer at the edge of the cutout outside a main current path between the contact area and the inner conductive structure.

A III-nitride based field effect transistor obtains improved performance characteristics through manipulation of the relationship between the in-plane lattice constant of the interface of material layers. A high mobility two dimensional electron gas generated at the interface of the III-nitride materials permits high current conduction with low ON resistance, and is controllable through the manipulation of spontaneous polarization fields obtained according to the characteristics of the III-nitride material. The field effect transistor produced can be made to be a nominally on device where the in-plane lattice constants of the material forming the interface match. A nominally off device may be produced where one of the material layers has an in-plane lattice constant that is larger than that of the other layer material. The layer materials are preferably InAlGaN / GaN layers that are particularly tailored to the characteristics of the present invention.

The invention discloses a control circuit of a motor comprising at least two sensing chips and at least two groups of winding groups, wherein the sensing chips are connected electrically with each other, and the winding groups respectively comprise a first winding and a second winding, one end of the first winding is connected with one end of the second winding electrically, while the other endsof the first winding and the second winding are electrically connected with the corresponding sensing chips. In addition, the invention also discloses a motor with the control circuit.

The invention discloses an impedance composite superconducting fault current limiter based on a novel superconducting material. The superconducting fault current limiter comprises a square iron core (18), wherein an MgB2 superconducting winding (11) is arranged on the upper side of the iron core (18) and connected with a reactor (10) in parallel; a high temperature superconducting winding (17) isarranged on the lower side of the iron core (18) and connected with a direct current voltage source (13) in series; and a magnetic switch (16) and a value adjustable first resister (12) are connectedin series between the high temperature superconducting winding (17) and the direct current voltage source (13) to form a first circuit. Under the condition of satisfying the line current-carrying capacity, the superconducting fault current limiter uses the fewest superconductors, can improve the inductive impedance level in case of fault, and also can reduce voltage loss in normal operation and ensure the reliability of operation.

The invention relates to a control cable for a flame-retardant fireproof boat and a manufacturing method thereof. Flame-retardant fireproof ethylene propylene rubber insulating layers are uniformly extruded on the peripheries of stranded copper conductors in a wrapping way to form control cable insulated cores; a plurality of control cable insulated cores are stranded mutually to form a control cable core; the periphery of the control cable core is coated with a low-intensity non-woven fabric longitudinally-covered layer; an inner jacket is extruded on the periphery of the low-intensity non-woven fabric longitudinally-covered layer in a wrapping way; the periphery of the inner jacket is coated with an armor braid; and an outer jacket is extruded on the periphery of the armor braid in a wrapping way. The cable disclosed by the invention adopts the low-intensity non-woven fabric longitudinally-covered layer of which the shape is completely in fit with that of each control cable insulated core, so that gaps between the low-intensity non-woven fabric longitudinally-covered layer and the control cable insulated cores are eliminated, flame can be conveniently prevented from being spread and transferred inwards under the burning condition, and resistance to impregnation of humidity can be enhanced; and meanwhile, the low-intensity non-woven fabric longitudinally-covered layer can ensure that the inner jacket and the insulated cores are not adhered, so that the insulated cores are not damaged when the jacket is stripped in the constructing process.

The invention relates to a power cable for a flame-retardant fireproof boat and a manufacturing method thereof. Flame-retardant fireproof ethylene propylene rubber insulating layers are uniformly extruded on the peripheries of stranded copper conductors in a wrapping way to form power cable insulated cores; a plurality of power cable insulated cores are stranded to form a power cable core; the periphery of the power cable core is coated with a low-intensity non-woven fabric longitudinally-covered layer; an inner jacket is extruded on the periphery of the low-intensity non-woven fabric longitudinally-covered layer in a wrapping way; the periphery of the inner jacket is coated with an armor braid; and an outer jacket is extruded on the periphery of the armor braid in a wrapping way. The cable disclosed by the invention adopts the low-intensity non-woven fabric longitudinally-covered layer of which the shape is completely in fit with that of each power cable insulated core, so that gaps between the low-intensity non-woven fabric longitudinally-covered layer and the power cable insulated cores are eliminated, flame can be conveniently prevented from being spread and transferred inwards under the burning condition, and resistance to impregnation of humidity can be enhanced; and meanwhile, the low-intensity non-woven fabric longitudinally-covered layer can ensure that the inner jacket and the insulated cores are not adhered, so that the insulated cores are not damaged when the jacket is stripped in the constructing process.