33results about How to "Small transition resistance" patented technology

The invention relates to electric connecting equipment (1) which comprises the components of a flat busbar (2) with a through opening, wherein the through opening extends through the first surface side (9) and the second surface side (10) of the flat busbar; a cable receiving component (3) which is used for conductively connecting the cable with the flat busbar; a screw (7), wherein the rod (8) ofthe screw is guided from the second surface side through the through opening of the flat busbar and through the contact area (5) of the cable receiving component; a nut (11) which is screwed on the rod of the screw, wherein the contact area of the cable receiving component is at least indirectly clamped between the nut and the first surface side through the nut; and contact elements (6,14,19,24)which is connected with the flat busbar material in a combined manner in annular combining areas (16,21,25) which surround the through opening, and furthermore the contact area of the cable receivingcomponent is directly placed on the contact component. The invention further relates to a method for manufacturing the electric connecting equipment.

The invention relates to a calculation method of short-circuit current contributed by an alternating-current system during the direct-current fault of a multi-end alternating current/direct current hybrid distribution network. The method includes the following steps that: 101, a post-direct-current inter-pole short-circuit fault equivalent circuit of the alternating current/direct current hybrid distribution network is provided according to the characteristics of fault current and contribution made by the alternating-current system to the fault current after an inter-pole short-circuit fault of a direct-current line occurs, wherein the equivalent circuit is composed of an alternating-current voltage source 301, an alternating-current system equivalent resistor 302, an alternating-current system equivalent inductor 303, a converter station direct-current side capacitor 206, direct-current line resistors 304 and 306, and direct-current line inductors 305 and 307; 102, an analytical expression of the short-circuit current contributed by the alternating-current system is derived according to the analysis of the step 101; and 103, the calculation method of the short-circuit current contributed by the alternating-current system during the direct-current fault of the multi-end alternating current/direct current hybrid distribution network is provided according to the analysis of the step 102, the steady-state average value, transient peak value time and transient peak value of the method are calculated.

The invention relates to a sensor element (110), particularly for capturing a property of a gas in a measuring gas space. The sensor element (110) comprises at least one solid electrolyte layer (116) having at least one ceramic solid electrolyte material (118) and at least one electrode (112) contacting the solid electrolyte layer (116) directly or indirectly. The electrode (112) comprises at least one ceramic material (122) and at least one metal material (120). The electrode (112) has a lateral extension and has structuring (126, 140) extending parallel and/or perpendicular to the lateral extension within the lateral extension. The structuring (126, 140) is designed to enlarge an electrode surface of the electrode (112).

The invention relates to a distribution network fault line selection method based on zero-mode current multi-order difference transformation and belongs to the technical field of power system relay protection. When feeder lines in a distribution network are in a single-phase earth fault, zero-mode current traveling wave data, recorded into a short time window, of the feeder lines are extracted for multi-order difference transformation; if a first nonzero value achieved after transformation is carried out is greater than zero, it is judged that the feeder lines are in the single-phase earth fault; if the first nonzero value is smaller than zero, it is judged that the feeder lines are not in the single-phase earth fault. By the utilization of the zero-mode current data, in the short time window, of the feeder lines after the fault occurs, at the moment, an arc suppression coil does not compensate for a system, so that the method avoids influence on the compensation effect of the arc suppression coil, and fault feeder lines can be judged out accurately and reliably.

The invention relates to supporting means for an elevator system comprising a plurality of tension-bearing elements arranged parallel to each other and a jacket. The tension-bearing elements are surrounded by the jacket, wherein the tension-bearing elements extend along a longitudinal axis of the supporting means. The jacket is at least partially removed from the tension-bearing elements in a segment of the longitudinal axis of the supporting means. Contact elements for electrically contacting the tension-bearing elements are fastened to the tension-bearing elements in said segment.

The invention discloses a high-frequency transient component direction longitudinal protection method and system. The method is characterized by through extracting voltage and current high-frequency transient component data at a protection installation position, calculating the phase relation of a voltage and current high-frequency transient component according to Hilbert-Huang conversion, and realizing internal and external fault determination of a UHVDC power transmission system line; and on the basis of identifying a fault in a direct current line area, carrying out simple logic processingat the fault directions of the two sides of an anode and a cathode so that a fault pole can be selected without a complicated fault selection pole scheme. For various fault types, the faults in the line area and outside the line area can be accurately identified, and fault pole selection can be performed. The protection method is less affected by the factors of a transition resistor, a fault distance and the like.

An electrical plug (1), a rigid holder, a system consisting of an electrical plug and a holder, and a method of making a connection between an electrical plug and a holder, are proposed, said electrical plug comprising a housing (2) and a spring clamp connection for connection of a flexible electric conductor (10) to the end piece of a rigid holder (20). The spring clamp connection is made out of a clamp spring (3) made of flat spring material, comprising a contact leg (5) and a clamp leg (4). The clamp leg is bent closed in the manner of a loop onto the end of the contact leg and comprises a clamp opening (6) through which the end of the contact leg protrudes. A clamp edge (8) of the clamp opening located opposed to the clamp leg, together with the clamp leg itself, forms a clamp location in which the electric conductor passed through the clamp opening is clamped before the plug is-mounted on the holder. After mounting of the plug on the holder, the holder extends through the clamp opening between the contact leg and the electric conductor, and the holder and clamp spring are so braced against each other that the electric conductor is clamped between the clamp edge and the holder, thereby forming an electrical connection between holder and electric conductor.

The invention relates to a conveyor system (1), comprising two frame profiles (2, 3) which run such that they are spaced apart from one another, a plurality of motorized conveyor rollers (4) which are arranged in between, an insulator (19) which runs along the at least one frame profile (2) with a plurality of receptacles which are open on the longitudinal side, and a plurality of electric conductors (20) which are arranged in the insulator (19) and are connected electrically to drive electronics of the conveyor rollers (4), wherein in each case one electric conductor (20) is mounted in in each case one receptacle. The form factor f of an electric conductor (20), which is defined as a quotient of the circumference of a circle which is equivalent in area to the cross section of the electric conductor (20) and of the circumference of said cross section of the electric conductor (20), is selected here in the range from f = 0.88 to f = 1.00.

The present invention relates to a plug-type connection (1) for an electrical connection between a first line (2) and a second line (3), comprising a contact bolt (4) which can be connected to the first line (2), a collet (5) which can be connected to the second line (3) and has a cutout (6) for inserting the contact bolt (4), has a conical collet outer face (7) and has at least n slots (8) for forming n clamping jaws, where n≥1, and a clamping ring (9) with a conical clamping ring inner face (10) against which the conical collet outer face (7) bears, wherein the at least one clamping jaw can be clamped against the contact bolt (4) as a result of a relative movement between the collet (5) and the clamping ring (9).

The invention discloses a novel steel-aluminum composite contact rail expansion joint, comprising a sliding rail structure which are formed by sequentially connecting rail webs of a left sliding rail,a middle sliding rail and a right sliding rail through a fishtail clamping plate, wherein the fishtail clamping plate is slidably connected with the rail web of the left sliding rail and the rail webof the right sliding rail, and is fixedly connected with the rail web of the middle sliding rail; and main soft copper bands are arranged on rail bottoms of the left sliding rail, the right sliding rail and the middle sliding rail. Furthermore, due to the adoption of copper-aluminum transition plates, the main soft copper bands, pressing plates, auxiliary soft copper bands, partition plates, limiting sleeves, connecting transition blocks and so on, the defect of the expansion joint in the curve performance of the line is solved, and the condition that the mechanical connection, electrical performance and compensation ability can meet the requirements can be ensured. The needs of lateral current receiving can be met and the requirement on boundary can be reduced; and a current collecting shoe of the train can smoothly scratch across the current receiving surface of the expansion joint to ensure the current continuing smoothness of the contact rail.

The invention provides a continuous preparation method of a copper cladded aluminium composite bus. The continuous preparation method comprises following steps: raw material on-line surface cleaning,raw material aluminium continuous rehabilitation extruding and recrystallization, raw material copper continuous cladding raw material aluminium and blank material moulding, moulded blank material continuous deformation and temperature compensation, large deformation rate thermal state finish rolling, on-line finishing and on-line heat treatment, continuous rolling and off-line annealing, and straightening leveling and scaling cutting. The copper cladded aluminium composite bus prepared using the continuous preparation method possesses characteristics such as low copper aluminium transition resistance, high bonding strength, and excellent copper layer uniformity; copper aluminum layering is not caused through machining such as bending, shearing, stamping, and distortion, and excellent ductility and mouldability are achieved.

The invention discloses a rapid line selection method for a single-phase earth fault of a low-current grounding system. The method comprises the steps of firstly collecting the three-phase current instantaneous values at all feeder outlets of a substation in real time; secondly, calculating zero-sequence current instantaneous values of lines according to the current instantaneous values, and solving a second derivative of each zero-sequence current instantaneous value by utilizing an interpolation method; then, finding out the maximum value and minimum value points of the second derivative ofthe instantaneous value of each zero-sequence current instantaneous value of each line within 3ms by taking the fault occurrence moment as a zero moment; and finally, solving the zero-sequence currentchange trend characteristic quantity of each line, and finding out the line with the maximum characteristic quantity, i.e., judging the line as a fault line. The method is slightly influenced by theline length, the transition resistance and an arc suppression coil, and the single-phase earth fault line selection can be rapidly carried out.

A cable lug device (300) and connection terminal (100) having a cable lug device (300), the connection terminal having a conductor receptacle (115), a clamping device (101) and a current bar receptacle (110a). On the connection terminal is provided a cable lug device (100) having a cable lug body (301) and, provided thereon, a cable receptacle (302) for fastening a connection cable (303). The cable lug body (301) has a current bar (310) that is inserted in a current bar receptacle (110a) of the connection terminal (100) and serves there as a current bar (110) for contacting a conductor (126).

The invention relates to a battery cell connector (2) for battery cells (4) connected in series. The battery cell connector includes a first connecting element (2a) for establishing a connection witha first battery pole (6a) of a first battery cell (4a), and a second connecting element (2b) for establishing a connection with a second battery pole (6b) of a second battery cell (4b). The connectingelements (2a, 2b) are constructed corresponding to each other's shapes and can be connected in series with each other so that a contact surface (8) surrounding the battery cells (4) can be maximizedto ensure effective cooling of the battery cells (4).

The invention relates to a partition insulator consisting of an essentially disc-shaped insulation body, comprising a fastening flange, preferably metallic, and at least one electrode that is preferably rotationally symmetrical and that passes through said insulating body in an axial manner. The cross-section thereof, is greater in the central plane of the insulation body than in the region of the surfaces of the insulating body that are opposite each other. In order to enable said partition insulator to be used with high electric powers, and to also have high safety reserves that are adequate for load switching, and a high mechanical compressive strength with the highest possible rupture pressure, said insulator body has a thickness that reduces in all directions from the centre thereof to the outside. In order to ensure high mechanical strength, said partition insulator is fitted with electrodes and the largest cross-section in the central section thereof rests in the region of the central plane of the insulating body, and said cross-section has no point that is smaller than on the ends of the electrodes.

The present invention concerns a communication system with monitored input state of an input device. The input device has an input connection, a ground connection and an input circuit connected between the input connection and the ground connection. The input circuit is designed to detect an input signal. A sensor device is also provided, which is connected to the input connection and optionally the ground connection. The communication system also has a current-increasing device connected to the input connection and the ground connection, which is designed to furnish an increased current for the input circuit for an adjustable time period as a function of the voltage lying on the input connection. A power supply is also provided to supply power to the sensor device.

A semiconductor lamp (1) comprises a housing (2) in which a driver (3) is accommodated and at least one contact pin (6) protruding from the housing (2) outwards, wherein the contact pin (6) is tubular and riveted to the housing (2) and the driver (3) is connected to the contact pin (6) via an electrically conductive connection element (12) which is inserted into a cavity (13) of the contact pin (6). A method serves for producing a semiconductor lamp (1), wherein at least one tubular contact pin (6) is inserted into a feedthrough (5) of a housing (2) from outside till the contact pin (6) abuts the housing (2), the contact pin (6) is next riveted with the housing (2) on the inside and a driver (3) is inserted into the housing (2), whereby an electrically conductive connection element (12) is inserted into the contact pin (6). The invention is particularly applicable to LED retrofit lamps for replacing bipin halogen lamps, in particular MR16 lamps.

The invention relates to an assembly comprising two copper sheets, which are connected to each other by means of a screw connection, wherein the screw has been screwed directly into the copper sheets without screw holes having been provided, and to a method for producing said assembly.