Abstract: The invention relates to a current measuring resistor (1) for measuring an electrical current, in particular in the kA range, in a high-voltage network. The current measuring resistor (1) according to the invention comprises two connection parts (2, 3) for conducting the electrical current in and out and a resistance element (4) made of a low-impedance resistive material. The resistance element (4) is arranged between the two connection parts (2, 3) in the direction of current flow and is joined to the two connection parts (2, 3), such that the electrical current to be measured flows through the resistance element (4) during operation and produces a voltage drop across the resistance element (4). According to the invention, the connection parts (2, 3) and the resistance element (4) each have a substantially round cross section, in particular a substantially circular cross section, in a section plane perpendicular to the direction of current flow of the electrical current.

Abstract: The invention relates to a sensor (S), in particular for an electrical network of an electrically driven vehicle, in particular in an electric car. The sensor according to the invention comprises first of all a measuring device (ME) for current measurement and/or for voltage measurement in the electrical network, in particular with a low-resistance current sense resistor for current measurement according to the four-wire technique. Furthermore, the sensor (S) according to the invention comprises an integrated insulation monitoring device (ME, IQ, Rk, S3) for monitoring an electrical insulation of high-side and/or low-side of the electrical network. The sensor (S) according to the invention is characterized by the fact that the insulation monitoring device (ME, IQ, Rk, S3) operates actively and impresses measurement pulses into the electrical network for insulation monitoring.

Abstract: The invention relates to a current measuring apparatus for redundant measurement of an electric current (I) with a low-resistance current measuring resistor (1) for current measurement according to the four-lead technique and with a magnetic field sensor (14). The invention provides that the electric current (I) to be measured in the current measuring apparatus is divided into a main current path with a main current (11) and a secondary current path with a secondary current (12), the main current path and the secondary current path together forming a parallel circuit. The low-resistance current measuring resistor (1) is arranged in the main current path and has the main current (11) flowing through it, while the magnetic field sensor (14) is arranged in the secondary current path and measures the secondary current (12).

Abstract: The invention relates to a production method for an electrical resistance element (for example a shunt) with the following steps: —providing a resistance alloy in powder form, and—forming the resistance element from the powdered resistance material. The invention also relates to a correspondingly produced resistance element.

Abstract: The present invention concerns a layer structure comprising: a substrate having a glass or ceramic surface, a layer A at least partially covering the glass or ceramic surface of the substrate, wherein layer A comprises a glass in which at least two mutually different elements are contained as oxides, and a layer B at least partially covering the layer A. Layer B comprises: a resistance alloy having a temperature coefficient of electrical resistance less than 150 ppm/K, and optionally a glass containing at least two mutually different elements as oxides. Layer B contains not more than 20 weight percent of glass based on the total weight of layer B.

Abstract: The invention relates to a current measuring resistor (1) for measuring an electrical current, in particular in the kA range, in a high-voltage network. The current measuring resistor (1) according to the invention comprises two connection parts (2, 3) for conducting the electrical current in and out and a resistance element (4) made of a low-impedance resistive material. The resistance element (4) is arranged between the two connection parts (2, 3) in the direction of current flow and is joined to the two connection parts (2, 3), such that the electrical current to be measured flows through the resistance element (4) during operation and produces a voltage drop across the resistance element (4). According to the invention, the connection parts (2, 3) and the resistance element (4) each have a substantially round cross section, in particular a substantially circular cross section, in a section plane perpendicular to the direction of current flow of the electrical current.

Abstract: The invention relates to a production method for an electrical resistance element (for example a shunt) with the following steps: -providing a resistance alloy in powder form, and -forming the resistance element from the powdered resistance material. The invention also relates to a correspondingly produced resistance element.

Abstract: The invention concerns a manufacturing method for an electrical resistor (1), in particular for a low-resistance current measuring resistor, with the following steps (S1-S4): a) providing a plate-shaped base part (9) for the resistor (1), the base part (9) having a certain thickness and corresponding to the thickness a certain value of an electrical component characteristic (R), the thickness-dependent electrical component characteristic (R) preferably being the electrical resistance (1) of the base part (9), the sheet resistance or the transverse resistance, and b) rolling the base part (9) with a certain degree of rolling (AG), the thickness of the base part (9) decreasing in accordance with the degree of rolling (AG) and the value of the component characteristic (R) changing accordingly, c) measuring the thickness-dependent electrical component characteristic (R) on the rolled base part (9), and d) adaptation of the degree of rolling (AG) as a function of the measured electrical component characteristic (

Abstract: The invention relates to a thermoelectric module for thermoelectric current generation, in particular in an exhaust gas system of an internal combustion engine, with a base plate and a plurality of thermocouples each with two legs, the thermocouples being electrically connected in series and mounted on the base plate. The invention provides that the base plate consists of a metallic material. This enables a low-cost production, allows substantially larger formats and makes the thermoelectric module mechanically much less sensitive than a conventional base plate made of ceramic. Furthermore, the invention includes a corresponding production method.

Abstract: The invention relates to a connecting element (4, 5), in particular a screw (4) or a nut (5), for mechanically connecting components (1, 2), the connecting element (4, 5) consisting at least partially of a material with a mechanical tensile strength of at least 350 MPa. According to the invention, the material of the connecting element (4, 4?, 5, 8) has an electrical conductivity of at least 50% IACS. The invention also relates to a corresponding production method for a connecting element (4, 5) of this type.

Abstract: The present invention concerns a layer structure comprising: a substrate having a glass or ceramic surface, a layer A at least partially covering the glass or ceramic surface of the substrate, wherein layer A comprises a glass in which at least two mutually different elements are contained as oxides, and a layer B at least partially covering the layer A. Layer B comprises: a resistance alloy having a temperature coefficient of electrical resistance less than 150 ppm/K, and optionally a glass containing at least two mutually different elements as oxides. Layer B contains not more than 20 weight percent of glass based on the total weight of layer B.

Abstract: The invention relates to a coupling for electrically and mechanically connecting medium-voltage or high-voltage components, in particular for voltages of 1 kV to 52 kV, comprising a first connecting piece for mechanically and electrically connecting a medium-voltage or high-voltage component, in particular for connecting to a complementary connecting piece of a bushing of a switchgear cabinet, and a second connecting piece for mechanically and electrically connecting another medium-voltage or high-voltage component, in particular for connecting to a complementary connecting piece of an electrical cable, wherein the two connecting pieces of the coupling belong to complementary connection types, which fit together mechanically, and comprising a low-resistance current sensing resistor, which is built into the coupling and electrically connected between the first connecting piece and the second connecting piece in order to measure a current flow between the first connecting piece and the second connecting piece.

Abstract: The invention concerns a manufacturing method for an electrical resistor (1), in particular for a low-resistance current measuring resistor, with the following steps (S1-S4): a) providing a plate-shaped base part (9) for the resistor (1), the base part (9) having a certain thickness and corresponding to the thickness a certain value of an electrical component characteristic (R), the thickness-dependent electrical component characteristic (R) preferably being the electrical resistance (1) of the base part (9), the sheet resistance or the transverse resistance, and b) rolling the base part (9) with a certain degree of rolling (AG), the thickness of the base part (9) decreasing in accordance with the degree of rolling (AG) and the value of the component characteristic (R) changing accordingly, c) measuring the thickness-dependent electrical component characteristic (R) on the rolled base part (9), and d) adaptation of the degree of rolling (AG) as a function of the measured electrical component characteristic (

Abstract: The invention relates to a punched part for producing an electrical resistor, in particular a current measuring resistor, comprising a resistor element (9) consisting of a low-resistance resistive material (for example Manganin®) and two electrical connection parts (10, 11) consisting of a conductor material (for example copper), wherein the resistor element (9) is arranged between the two electrical connection parts (10, 11) in the direction of current flow in such a way that the electrical current flows through the resistor element (9). In accordance with the invention, the punched part additionally has a landing area (14) for providing an integrated circuit (16) on the landing area (14) of the punched part. Furthermore, the invention comprises a current sensor comprising such a punched part and a corresponding production method.

Abstract: The invention relates to a coupling for electrically and mechanically connecting medium-voltage or high-voltage components, in particular for voltages of 1 kV to 52 kV, comprising a first connecting piece for mechanically and electrically connecting a medium-voltage or high-voltage component, in particular for connecting to a complementary connecting piece of a bushing of a switchgear cabinet, and a second connecting piece for mechanically and electrically connecting another medium-voltage or high-voltage component, in particular for connecting to a complementary connecting piece of an electrical cable, wherein the two connecting pieces of the coupling belong to complementary connection types, which fit together mechanically, and comprising a low-resistance current sensing resistor, which is built into the coupling and electrically connected between the first connecting piece and the second connecting piece in order to measure a current flow between the first connecting piece and the second connecting piece.

Abstract: The invention relates to a connecting element (4, 5), in particular a screw (4) or a nut (5), for mechanically connecting components (1, 2), the connecting element (4, 5) consisting at least partially of a material with a mechanical tensile strength of at least 350 MPa. According to the invention, the material of the connecting element (4, 4?, 5, 8) has an electrical conductivity of at least 50% IACS. The invention also relates to a corresponding production method for a connecting element (4, 5) of this type.

Abstract: The invention relates to a punched part for producing an electrical resistor, in particular a current measuring resistor, comprising a resistor element (9) consisting of a low-resistance resistive material (for example Manganin®) and two electrical connection parts (10, 11) consisting of a conductor material (for example copper), wherein the resistor element (9) is arranged between the two electrical connection parts (10, 11) in the direction of current flow in such a way that the electrical current flows through the resistor element (9). In accordance with the invention, the punched part additionally has a landing area (14) for providing an integrated circuit (16) on the landing area (14) of the punched part. Furthermore, the invention comprises a current sensor comprising such a punched part and a corresponding production method.

Abstract: The invention relates to a measuring system for measuring electrical measurement variables (I1, I2, I3, U12, U23, U13) in an electrical installation, in particular in a medium voltage installation or in a high voltage installation, including a plurality of sensors (1-3, 8-10) which each measure at least one electrical measurement variable (I1, I2, I3, U12, U23, U13) and output a measurement signal corresponding to the measurement variable (I1, I2, I3, U12, U23, U13), and including a central evaluating unit (7, 14) which receives the measurement signals from the sensors (1-3, 8-10).

Abstract: A magnetic sensor having at least a first and at least a second structure of soft-magnetic material that are spatially separated and define a first gap therebetween. The first and second structure of soft-magnetic material are adapted to form a gap magnetic field pointing in a direction substantially perpendicular to the elongation of the first gap in the vicinity of the first gap in response to an external magnetic field. Additionally, the magnetic sensor comprises at least a first magnetoresistive layered structure that is positioned in the vicinity of the first gap including inside the first gap and that is sensitive to the gap magnetic field.

Abstract: A magnetic sensor having at least a first and at least a second structure of soft-magnetic material that are spatially separated and define a first gap therebetween. The first and second structure of soft-magnetic material are adapted to form a gap magnetic field pointing in a direction substantially perpendicular to the elongation of the first gap in the vicinity of the first gap in response to an external magnetic field. Additionally, the magnetic sensor comprises at least a first magnetoresistive layered structure that is positioned in the vicinity of the first gap including inside the first gap and that is sensitive to the gap magnetic field.