Patents by Inventor Ullrich Hetzler
Ullrich Hetzler has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11112432Abstract: The invention relates to a measuring arrangement (12) for measuring an electric current (I) in the high-current range, in particular in the current range of more than 1 kA, having a low-resistance current sense resistor (1) for measuring current in accordance with four conductor technology and a physically integrated measuring circuit (17) for measuring the voltage which is dropped across the current sense resistor (1). The invention provides several pairs of voltage taps for measuring the electrical voltage which is dropped across the resistor element (4), wherein the pairs of voltage taps are connected to the measuring circuit (17). The invention further provides two busbar connections (13, 14) for connection to two busbars (15, 16). Corrections of the temperature coefficient, the thermoelectric voltage and the offset and also a high sampling rate and resolution allow high-resolution measurement of a DC current in a high AC current.Type: GrantFiled: August 1, 2017Date of Patent: September 7, 2021Assignee: ISABELLENHUETTE HEUSLER GMBH & CO. KGInventors: Ullrich Hetzler, Michael Pollmann
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Patent number: 10964462Abstract: 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 (Type: GrantFiled: January 25, 2017Date of Patent: March 30, 2021Assignee: ISABELLENHÜTTE HEUSLER GMBH & CO. KGInventors: Marcus Escher, Paul Harke, Ullrich Hetzler, Jan Marien
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Patent number: 10901003Abstract: The invention concerns a current measuring device for measuring an electric current (Ip, In) according to the four-wire technology with a low resistance current measuring resistor (RCu1, RCu, R0). The invention also provides for a compensating resistor (Rp) consisting of a fixed resistor connected in parallel with the resistor element (R0) of the low-resistance current measuring resistor (RCu1, RCu, R0) in order to at least partially compensate for the temperature dependence of the resistance value, so that the current measuring device has two current paths, namely a main current path through the resistor element (R0) on the one hand and a secondary current path through the compensating resistor (Rp) on the other hand.Type: GrantFiled: November 3, 2017Date of Patent: January 26, 2021Assignee: Isabellenhuette Heusler GmbH & Co. KGInventor: Ullrich Hetzler
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Patent number: 10748680Abstract: The invention concerns a resistor, in particular a low-resistance current measuring resistor, having two connecting parts made of a conductor material and a resistor element made of a resistance material inserted between the connecting parts, the resistance material having a specific thermal force which generates a specific thermoelectric voltage in the event of a temperature difference between the resistor element on the one hand and the connecting parts on the other hand. The invention additionally provides for a compensating element which in operation generates a thermoelectric voltage which at least partially compensates for the thermoelectric voltage generated by the resistor element. Furthermore, the invention includes a corresponding manufacturing process.Type: GrantFiled: July 3, 2017Date of Patent: August 18, 2020Assignee: ISABELLENHÜTTE HEUSLER GMBH & CO. KGInventor: Ullrich Hetzler
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Publication number: 20200182909Abstract: The invention concerns a current measuring device for measuring an electric current (Ip, In) according to the four-wire technology with a low resistance current measuring resistor (RCu1, RCu, R0). The invention also provides for a compensating resistor (Rp) consisting of a fixed resistor connected in parallel with the resistor element (R0) of the low-resistance current measuring resistor (RCu1, RCu, R0) in order to at least partially compensate for the temperature dependence of the resistance value, so that the current measuring device has two current paths, namely a main current path through the resistor element (R0) on the one hand and a secondary current path through the compensating resistor (Rp) on the other hand.Type: ApplicationFiled: November 3, 2017Publication date: June 11, 2020Inventor: Ullrich HETZLER
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Publication number: 20200166545Abstract: The invention concerns a coaxial resistor (1) having a forward conductor (6) and a return conductor (7) for conducting the current to be measured in opposite directions and having a resistor element made of a resistance material, the resistor element being arranged in the forward conductor (6) or in the return conductor (7) so that the current flows through the resistor element. The invention provides that the cross-section of at least the internal return conductor (7) is rectangular to the direction of current flow, which simplifies the manufacture of the coaxial resistor (1). Errors caused by thermoelectric voltages, TC of the resistor element and inhomogeneous current distribution are eliminated due to the design.Type: ApplicationFiled: June 22, 2018Publication date: May 28, 2020Inventor: Ullrich HETZLER
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Patent number: 10534020Abstract: 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.Type: GrantFiled: November 20, 2015Date of Patent: January 14, 2020Assignee: ISABELLENHÜTTE HEUSLER GMBH & CO. KGInventors: Ullrich Hetzler, Jan Marien, Alexander Wassmann, Eckhard Wendt
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Publication number: 20190237226Abstract: The invention concerns a resistor, in particular a low-resistance current measuring resistor, having two connecting parts made of a conductor material and a resistor element made of a resistance material inserted between the connecting parts, the resistance material having a specific thermal force which generates a specific thermoelectric voltage in the event of a temperature difference between the resistor element on the one hand and the connecting parts on the other hand. The invention additionally provides for a compensating element which in operation generates a thermoelectric voltage which at least partially compensates for the thermoelectric voltage generated by the resistor element. Furthermore, the invention includes a corresponding manufacturing process.Type: ApplicationFiled: July 3, 2017Publication date: August 1, 2019Inventor: Ullrich Hetzler
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Publication number: 20190170791Abstract: The invention relates to a measuring arrangement (12) for measuring an electric current (I) in the high-current range, in particular in the current range of more than 1 kA, having a low-resistance current sense resistor (1) for measuring current in accordance with four conductor technology and a physically integrated measuring circuit (17) for measuring the voltage which is dropped across the current sense resistor (1). The invention provides several pairs of voltage taps for measuring the electrical voltage which is dropped across the resistor element (4), wherein the pairs of voltage taps are connected to the measuring circuit (17). The invention further provides two busbar connections (13, 14) for connection to two busbars (15, 16). Corrections of the temperature coefficient, the thermoelectric voltage and the offset and also a high sampling rate and resolution allow high-resolution measurement of a DC current in a high AC current.Type: ApplicationFiled: August 1, 2017Publication date: June 6, 2019Inventors: Ullrich HETZLER, Michael POLLMANN
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Publication number: 20190066890Abstract: 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 (Type: ApplicationFiled: January 25, 2017Publication date: February 28, 2019Inventors: Marcus Escher, Paul Harke, Ullrich Hetzler, Jan Marien
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Patent number: 10161966Abstract: The invention relates to a U-shaped resistor (1), in particular a low-resistance current-measuring resistor (1), comprising a first connection part (2) made of a conductive material having a first current contact surface for conducting an electrical current (I) into the resistor (1), and comprising a second connection part (3) made of a conductive material having a second current contact surface for conducting the current (I) out of the resistor (1), as well as comprising a resistor element (4) made of a resistor material, wherein the resistor element (4) is arranged in the direction of current flow between the first connection part (2) and the second connection part (3), such that the electrical current (I) flows through the electrical resistor (1). The current (I) perpendicularly enters or leaves the connections parts (2, 3) via their outer surfaces.Type: GrantFiled: July 22, 2015Date of Patent: December 25, 2018Assignee: Isabellenhuette Heusler GmbH & Co. KGInventor: Ullrich Hetzler
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Patent number: 10151779Abstract: The invention relates to a measuring resistor (1), in particular a low-resistance current-measuring resistor, comprising two terminal parts (2, 3) that consist of a conductor material for introducing and discharging a current, and a resistor element (4) that consists of a resistor material, wherein the resistor element (4) is arranged between the two terminal parts (2, 3) in the direction of the current and current flows through the resistor element (4). According to one variant of the invention, the measuring resistor (1) has several pairs of voltage-measuring contacts (7) for measuring the voltage falling across the resistor element (4) in order to be able to compensate metrologically for inhomogeneities in the current density.Type: GrantFiled: February 17, 2014Date of Patent: December 11, 2018Assignee: Isabellenhuette Heusler GmbH & Co., LGInventor: Ullrich Hetzler
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Patent number: 9972424Abstract: The invention relates to a composite material strip for producing an electric component, in particular a resistor, in particular a low-resistance current-measuring resistor, comprising a first material strip (4) made of a copper-containing material, in particular a copper-containing conductor material, for later forming a first connection part of the electric component and comprising a second material strip (3) for later forming a second connection part of the electric component. The first material strip (4) and the second material strip (3) are electrically and mechanically connected together along a longitudinal seam, wherein the second material strip (3) consists of an aluminum-containing material, in particular an aluminum-containing conductor material. The invention further relates to a corresponding production method and to a corresponding component.Type: GrantFiled: September 25, 2015Date of Patent: May 15, 2018Assignee: Isabellenhuette Heusler GmbH & Co. KGInventor: Ullrich Hetzler
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Publication number: 20180024168Abstract: 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.Type: ApplicationFiled: November 20, 2015Publication date: January 25, 2018Applicant: ISABELLENHÜTTE HEUSLER GMBH & CO. KGInventors: ULLRICH HETZLER, JAN MARIEN, ALEXANDER WASSMANN, ECKHARD WENDT
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Publication number: 20170243679Abstract: The invention relates to a composite material strip for producing an electric component, in particular a resistor, in particular a low-resistance current-measuring resistor, comprising a first material strip (4) made of a copper-containing material, in particular a copper-containing conductor material, for later forming a first connection part of the electric component and comprising a second material strip (3) for later forming a second connection part of the electric component. The first material strip (4) and the second material strip (3) are electrically and mechanically connected together along a longitudinal seam, wherein the second material strip (3) consists of an aluminum-containing material, in particular an aluminum-containing conductor material. The invention further relates to a corresponding production method and to a corresponding component.Type: ApplicationFiled: September 25, 2015Publication date: August 24, 2017Applicant: Isabellenhuette Heusler GmbH & Co. KGInventor: Ullrich HETZLER
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Publication number: 20170212148Abstract: The invention relates to a U-shaped resistor (1), in particular a low-resistance current-measuring resistor (1), comprising a first connection part (2) made of a conductive material having a first current contact surface for conducting an electrical current (I) into the resistor (1), and comprising a second connection part (3) made of a conductive material having a second current contact surface for conducting the current (I) out of the resistor (1), as well as comprising a resistor element (4) made of a resistor material, wherein the resistor element (4) is arranged in the direction of current flow between the first connection part (2) and the second connection part (3), such that the electrical current (I) flows through the electrical resistor (1). The current (I) perpendicularly enters or leaves the connections parts (2, 3) via their outer surfaces.Type: ApplicationFiled: July 22, 2015Publication date: July 27, 2017Inventor: Ullrich HETZLER
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Patent number: 9437353Abstract: The invention relates to a resistor, in particular a low-resistance current-measuring resistor, comprising a first connection part (1) that consists of a conductor material for introducing an electrical current (I), a second connection part (2) that consists of a conductor material for discharging said electrical current (I), and a resistor element (3) that consists of a resistor material and is arranged between the two connection parts (1, 2) in the direction of the current, also comprising a resistor coating (7) that consists of a metallic material for the purpose of achieving protection from corrosion, and/or improving solderability. According to the invention, the metallic coating (7) is applied directly to the entire free surface of the resistor element (3) without any insulation layer.Type: GrantFiled: June 5, 2013Date of Patent: September 6, 2016Assignee: Isabellenhuette Heusler GmbH & Co. KGInventor: Ullrich Hetzler
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Patent number: 9435832Abstract: The invention relates to an electronic component (1), in particular a current sensor, having a resistance element (5) made of a resistance material, a first connection part (3) made of a conductor material for introducing an electrical current into the resistance element (5), and a second connection part (4) made of a conductor material for discharging the electrical current from the resistance element (5). According to the invention, the component (1) has a temperature-measuring device (8) for measuring a temperature difference between the resistance element (5), on the one hand, and at least one of the two connection parts (3, 4), on the other hand, in order to derive the current from the temperature difference.Type: GrantFiled: February 5, 2016Date of Patent: September 6, 2016Assignee: Isabellenhuette Heusler GmbH & Co. KGInventor: Ullrich Hetzler
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Publication number: 20160154035Abstract: The invention relates to an electronic component (1), in particular a current sensor, having a resistance element (5) made of a resistance material, a first connection part (3) made of a conductor material for introducing an electrical current into the resistance element (5), and a second connection part (4) made of a conductor material for discharging the electrical current from the resistance element (5). According to the invention, the component (1) has a temperature-measuring device (8) for measuring a temperature difference between the resistance element (5), on the one hand, and at least one of the two connection parts (3, 4), on the other hand, in order to derive the current from the temperature difference.Type: ApplicationFiled: February 5, 2016Publication date: June 2, 2016Inventor: Ullrich HETZLER
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Publication number: 20160041206Abstract: The invention relates to a measuring resistor (1), in particular a low-resistance current-measuring resistor, comprising two terminal parts (2, 3) that consist of a conductor material for introducing and discharging a current, and a resistor element (4) that consists of a resistor material, wherein the resistor element (4) is arranged between the two terminal parts (2, 3) in the direction of the current and current flows through the resistor element (4). According to one variant of the invention, the measuring resistor (1) has several pairs of voltage-measuring contacts (7) for measuring the voltage falling across the resistor element (4) in order to be able to compensate metrologically for inhomogeneities in the current density.Type: ApplicationFiled: February 17, 2014Publication date: February 11, 2016Inventor: Ullrich HETZLER