Patents by Inventor Stefan Lecheler
Stefan Lecheler 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: 11837420Abstract: A system for short-circuiting or grounding low-voltage and/or medium-voltage installations. The system includes at least one fault detection unit for detecting an arc and at least one signal-processing unit for processing signals from the at least one fault detection unit. The signal-processing unit is or can be connected to the fault detection unit for signal transmission. The system further includes at least one control unit which is or can be connected to the signal-processing unit for signal transmission, an electrical energy storage device in or on the control unit, and at least one fast-switching switching element having a mechanical energy store.Type: GrantFiled: March 24, 2020Date of Patent: December 5, 2023Assignee: Siemens AktiengesellschaftInventors: Stefan Lecheler, Martin Bindrich, Juergen Einschenk, Karsten Freundt
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Publication number: 20230335350Abstract: A method of operating a spring-loaded drive of a medium-voltage switchgear system includes at least the following steps: measuring a drive current of an electric auxiliary drive for loading a drive spring of the spring-loaded drive of the medium-voltage switchgear system; loading the drive spring by the electric auxiliary drive; creating an evaluation data set in accordance with the measured drive current; comparing the evaluation data set with an expectation; and outputting a maintenance signal in accordance with a result of the comparison. There is also described a spring-loaded drive and a medium-voltage switchgear system having a spring-loaded drive of this type.Type: ApplicationFiled: June 9, 2021Publication date: October 19, 2023Inventors: Stefan Lecheler, Malte Georg Hirte
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Publication number: 20220181106Abstract: A system for short-circuiting or grounding low-voltage and/or medium-voltage installations. The system includes at least one fault detection unit for detecting an arc and at least one signal-processing unit for processing signals from the at least one fault detection unit. The signal-processing unit is or can be connected to the fault detection unit for signal transmission. The system further includes at least one control unit which is or can be connected to the signal-processing unit for signal transmission, an electrical energy storage device in or on the control unit, and at least one fast-switching switching element having a mechanical energy store.Type: ApplicationFiled: March 24, 2020Publication date: June 9, 2022Inventors: Stefan Lecheler, Martin Bindrich, Juergen Einschenk, Karsten Freundt
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Patent number: 11095109Abstract: Disclosed is a device for recognizing an arcing fault in incident light that includes a sensor for detecting absorption lines of the incident light, and an evaluation unit which generates an evaluation signal when characteristic absorption lines are detected.Type: GrantFiled: May 23, 2016Date of Patent: August 17, 2021Assignee: SIEMENS AKTIENGESELLSCHAFTInventor: Stefan Lecheler
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Patent number: 10796832Abstract: A method and a device determine a movement profile of a solenoid plunger in a solenoid for monitoring a plunger-type armature movement for changes. The solenoid is an electromagnet in which a magnetic field can be generated by an electrical coil and a measuring unit is connected to the electrical coil. The method includes measuring a current profile with respect to time when the solenoid is operated, examining a measured current profile with respect to time for a position of a first reversal point in respect of time after operation of the solenoid and a current intensity, and assigning the position of the first reversal point to a movement end of the plunger-type armature.Type: GrantFiled: April 24, 2017Date of Patent: October 6, 2020Assignee: Siemens AktiengesellschaftInventors: Stefan Lecheler, Mario Schaefer
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Patent number: 10388475Abstract: A switch, in particular a grounding switch, is for quickly establishing a ground connection and for extinguishing an arc fault for a switching system. The grounding switch includes at least one fixed contact having a first cable feed, a moving contact, a contact guide having a second cable feed, and a mechanical energy store. In the opened state, an insulating distance between the fixed contact and the moving contact, is filled with insulation liquid, at least in part. The switch further includes a triggering device and a locking mechanism.Type: GrantFiled: May 19, 2016Date of Patent: August 20, 2019Assignee: SIEMENS AKTIENGSELLSCHAFTInventors: Martin Boettcher, Thomas Erlwein, Karsten Freundt, Sarai Gonzalez, Christian Heinrichs, Stefan Lecheler, Dorothea Pohlmann, Werner Schmidt
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Publication number: 20190156982Abstract: A method and a device determine a movement profile of a solenoid plunger in a solenoid for monitoring a plunger-type armature movement for changes. The solenoid is an electromagnet in which a magnetic field can be generated by an electrical coil and a measuring unit is connected to the electrical coil. The method includes measuring a current profile with respect to time when the solenoid is operated, examining a measured current profile with respect to time for a position of a first reversal point in respect of time after operation of the solenoid and a current intensity, and assigning the position of the first reversal point to a movement end of the plunger-type armature.Type: ApplicationFiled: April 24, 2017Publication date: May 23, 2019Inventors: STEFAN LECHELER, MARIO SCHAEFER
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Publication number: 20180212416Abstract: Disclosed is a device for recognizing an arcing fault in incident light, comprising a sensor for detecting absorption lines of the incident light, and an evaluation unit which generates an evaluation signal then characteristic absorption lines are detected.Type: ApplicationFiled: May 23, 2016Publication date: July 26, 2018Applicant: Siemens AktiengesellschaftInventor: Stefan LECHELER
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Publication number: 20180144890Abstract: A switch, in particular a grounding switch, is for quickly establishing a ground connection and for extinguishing an arc fault for a switching system. The grounding switch includes at least one fixed contact having a first cable feed, a moving contact, a contact guide having a second cable feed, and a mechanical energy store. In the opened state, an insulating distance between the fixed contact and the moving contact, is filled with insulation liquid, at least in part. The switch further includes a triggering device and a locking mechanism.Type: ApplicationFiled: May 19, 2016Publication date: May 24, 2018Applicant: Siemens AktiengesellschaftInventors: Martin BOETTCHER, Thomas ERLWEIN, Karsten FREUNDT, Sara GONZALEZ, Christian HEINRICHS, Stefan LECHELER, Dorothea POHLMANN, Werner SCHMIDT
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Patent number: 7815129Abstract: An apparatus and method are disclosed for continuously delivering and non-intermittently introducing a liquid into a main flow. An exemplary apparatus includes a supply line, a delivery line, a delivery device for delivering a mass flow of the liquid from the supply line to the delivery line, and at least one atomizing element communicating with the delivery line. A branch line which branches off from the delivery line can be arranged in the delivery direction downstream of the delivery device and upstream of the atomizing element, at least one changeover and/or regulating member for shutting off and/or throttling the branch line being arranged in combination with the branch line.Type: GrantFiled: July 28, 2006Date of Patent: October 19, 2010Assignee: Alstom Technology LtdInventors: Stefan Lecheler, Rolf Dittmann
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Publication number: 20070001026Abstract: An apparatus and method are disclosed for continuously delivering and non-intermittently introducing a liquid into a main flow. An exemplary apparatus includes a supply line, a delivery line, a delivery device for delivering a mass flow of the liquid from the supply line to the delivery line, and at least one atomizing element communicating with the delivery line. A branch line which branches off from the delivery line can be arranged in the delivery direction downstream of the delivery device and upstream of the atomizing element, at least one changeover and/or regulating member for shutting off and/or throttling the branch line being arranged in combination with the branch line.Type: ApplicationFiled: July 28, 2006Publication date: January 4, 2007Applicant: Alstom Technology Ltd.Inventors: Stefan Lecheler, Rolf Dittmann