Patents by Inventor Nitesh Ranjan
Nitesh Ranjan 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: 11699559Abstract: The present invention relates to a device for interrupting non-short circuit currents only, and in particular relates to a disconnector, more particularly high voltage disconnector, or to an earthing switch, more particularly make-proof earthing switch, and further relates to a low voltage circuit breaker. The device comprises at least two contacts movable in relation to each other between a closed state and an open state and defining an arcing region, in which an arc is generated during a current interrupting operation and in which an arc-quenching medium comprising an organofluorine compound is present. According to the application, a counter-arcing component is allocated to the arcing region, the counter-arcing component being designed for counteracting the generation of an arc and/or being designed for supporting the extinction of an arc.Type: GrantFiled: July 1, 2021Date of Patent: July 11, 2023Assignee: HITACHI ENERGY SWITZERLAND AGInventors: Denis Tehlar, Martin Seeger, Nitesh Ranjan, Patrick Stoller, Raffael Buehler, Jan Carstensen
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Patent number: 11450448Abstract: The present invention relates to the use of a linear octafluorobutene as a dielectric compound in an environmentally safe dielectric-insulation or arc-extinction fluid for an apparatus for the generation, the transmission, the distribution and/or the usage of electrical energy.Type: GrantFiled: September 24, 2018Date of Patent: September 20, 2022Assignee: HITACHI ENERGY SWITZERLAND AGInventors: Charles Doiron, Thomas Alfred Paul, Branimir Radisavljevic, Nitesh Ranjan, Anna Di-Gianni, Saskia Scheel
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Publication number: 20210327665Abstract: The present invention relates to a device for interrupting non-short circuit currents only, and in particular relates to a disconnector, more particularly high voltage disconnector, or to an earthing switch, more particularly make-proof earthing switch, and further relates to a low voltage circuit breaker. The device comprises at least two contacts movable in relation to each other between a closed state and an open state and defining an arcing region, in which an arc is generated during a current interrupting operation and in which an arc-quenching medium comprising an organofluorine compound is present. According to the application, a counter-arcing component is allocated to the arcing region, the counter-arcing component being designed for counteracting the generation of an arc and/or being designed for supporting the extinction of an arc.Type: ApplicationFiled: July 1, 2021Publication date: October 21, 2021Inventors: Denis Tehlar, Martin Seeger, Nitesh Ranjan, Patrick Stoller, Raffael Buehler, Jan Carstensen
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Patent number: 11087939Abstract: The present invention relates to a device for interrupting non-short circuit currents only, and in particular relates to a disconnector, more particularly high voltage disconnector, or to an earthing switch, more particularly make-proof earthing switch, and further relates to a low voltage circuit breaker. The device comprises at least two contacts movable in relation to each other between a closed state and an open state and defining an arcing region, in which an arc is generated during a current interrupting operation and in which an arc-quenching medium comprising an organofluorine compound is present. According to the application, a counter-arcing component is allocated to the arcing region, the counter-arcing component being designed for counteracting the generation of an arc and/or being designed for supporting the extinction of an arc.Type: GrantFiled: January 27, 2020Date of Patent: August 10, 2021Assignee: ABB Power Grids Switzerland AGInventors: Denis Tehlar, Martin Seeger, Nitesh Ranjan, Patrick Stoller, Raffael Buehler, Jan Carstensen
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Patent number: 10991528Abstract: A load-break switch has a housing holding insulation gas at ambient pressure; a first main contact and a second main contact being movable relative to each other in an axial direction of the switch; a first arcing contact and a second arcing contact being movable relative to each other in the axial direction and defining an arcing region where an arc is formed during a current breaking operation, wherein the arcing region is located radially inward from the first main contact; a pressurizing system pressurizing a quenching gas during the current breaking operation; and a nozzle system arranged to blow the pressurized quenching gas onto the arc. The first main contact includes at least one pressure release opening to allow gas flow in a radial outward direction. A total area of the pressure release opening suppresses a reduction of gas flow out of the pressure release opening.Type: GrantFiled: June 12, 2018Date of Patent: April 27, 2021Assignee: ABB Schweiz AGInventors: Nitesh Ranjan, Elham Attar, Jan Carstensen, Magne Saxegaard, Martin Kristoffersen, Ståle Talmo, Stanley Lohne, Michael Schwinne, Martin Seeger
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Patent number: 10964498Abstract: A gas-insulated low- or medium-voltage load break switch includes: a housing defining a housing volume for holding an insulation gas at an ambient pressure; a first arcing contact and a second arcing contact arranged within the housing volume, the first and second arcing contacts being movable in relation to each other along an axis of the load break switch and defining a quenching region in which an arc is formed during a current breaking operation; a pressurizing system having a pressurizing chamber arranged within the housing volume for pressurizing a quenching gas from an ambient pressure p0 to a quenching pressure pquench during the current breaking operation; and a nozzle system arranged within the housing volume for blowing the pressurized quenching gas in a subsonic flow pattern from the pressurization chamber onto the arc formed in the quenching region during the current breaking operation.Type: GrantFiled: December 3, 2018Date of Patent: March 30, 2021Assignee: ABB Schweiz AGInventors: Bernardo Galletti, Elham Attar, Jan Carstensen, Magne Saxegaard, Martin Kristoffersen, Martin Seeger, Michael Schwinne, Nitesh Ranjan, Patrick Stoller
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Publication number: 20200161064Abstract: The present invention relates to a device for interrupting non-short circuit currents only, and in particular relates to a disconnector, more particularly high voltage disconnector, or to an earthing switch, more particularly make-proof earthing switch, and further relates to a low voltage circuit breaker. The device comprises at least two contacts movable in relation to each other between a closed state and an open state and defining an arcing region, in which an arc is generated during a current interrupting operation and in which an arc-quenching medium comprising an organofluorine compound is present. According to the application, a counter-arcing component is allocated to the arcing region, the counter-arcing component being designed for counteracting the generation of an arc and/or being designed for supporting the extinction of an arc.Type: ApplicationFiled: January 27, 2020Publication date: May 21, 2020Inventors: Denis Tehlar, Martin Seeger, Nitesh Ranjan, Patrick Stoller, Raffael Buehler, Jan Carstensen
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Publication number: 20200126742Abstract: A gas-insulated load break switch and a gas-insulated switchgear having a gas-insulated load break switch.Type: ApplicationFiled: June 12, 2018Publication date: April 23, 2020Inventors: Nitesh Ranjan, Elham Attar, Jan Carstensen, Magne Saxegaard, Martin Kristoffersen, Ståle Talmo, Stanley Lohne, Michael Schwinne, Martin Seeger
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Patent number: 10553376Abstract: The present invention relates to a device for interrupting non-short circuit currents only, and in particular relates to a disconnector, more particularly high voltage disconnector, or to an earthing switch, more particularly make-proof earthing switch, and further relates to a low voltage circuit breaker. The device comprises at least two contacts movable in relation to each other between a closed state and an open state and defining an arcing region, in which an arc is generated during a current interrupting operation and in which an arc-quenching medium comprising an organofluorine compound is present. According to the application, a counter-arcing component is allocated to the arcing region, the counter-arcing component being designed for counteracting the generation of an arc and/or being designed for supporting the extinction of an arc.Type: GrantFiled: October 13, 2017Date of Patent: February 4, 2020Assignee: ABB Schweiz AGInventors: Denis Tehlar, Martin Seeger, Nitesh Ranjan, Patrick Stoller, Raffael Buehler, Jan Carstensen
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Publication number: 20190115174Abstract: A gas-insulated low- or medium-voltage load break switch includes: a housing defining a housing volume for holding an insulation gas at an ambient pressure; a first arcing contact and a second arcing contact arranged within the housing volume, the first and second arcing contacts being movable in relation to each other along an axis of the load break switch and defining a quenching region in which an arc is formed during a current breaking operation; a pressurizing system having a pressurizing chamber arranged within the housing volume for pressurizing a quenching gas from an ambient pressure p0 to a quenching pressure pquench during the current breaking operation; and a nozzle system arranged within the housing volume for blowing the pressurized quenching gas in a subsonic flow pattern from the pressurization chamber onto the arc formed in the quenching region during the current breaking operation.Type: ApplicationFiled: December 3, 2018Publication date: April 18, 2019Inventors: Bernardo Galletti, Elham Attar, Jan Carstensen, Magne Saxegaard, Martin Kristoffersen, Martin Seeger, Michael Schwinne, Nitesh Ranjan, Patrick Stoller
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Publication number: 20190027268Abstract: The present invention relates to the use of a linear octafluorobutene as a dielectric compound in an environmentally safe dielectric-insulation or arc-extinction fluid for an apparatus for the generation, the transmission, the distribution and/or the usage of electrical energy.Type: ApplicationFiled: September 24, 2018Publication date: January 24, 2019Inventors: Charles Doiron, Thomas Alfred Paul, Branimir Radisavljevic, Nitesh Ranjan, Anna Di-Gianni, Saskia Scheel
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Patent number: 9903903Abstract: A method for deriving at least one operating parameter of a fluid-insulated electrical apparatus, in particular of gas-insulated switchgear. The operating parameter is dependent on a dielectric breakdown strength of an insulation fluid of the electrical apparatus. The insulation fluid includes at least three components that are assigned to at least a first and a second component group such that at least one component group comprises at least two components. The component groups differ in their weighted average values of the molecular masses of the components in the respective component groups. At least one quantity which is indicative of the concentration of the first component group and of the concentration of the second component group is determined from the insulation fluid, e.g. by measuring one or more measurement variables with one or more sensors. The operating parameter is then derived using the at least one quantity.Type: GrantFiled: June 13, 2014Date of Patent: February 27, 2018Assignee: ABB Technology AGInventors: Axel Kramer, Thomas Alfred Paul, Navid Mahdizadeh, Nitesh Ranjan
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Publication number: 20180040442Abstract: The present invention relates to a device for interrupting non-short circuit currents only, and in particular relates to a disconnector, more particularly high voltage disconnector, or to an earthing switch, more particularly make-proof earthing switch, and further relates to a low voltage circuit breaker. The device comprises at least two contacts movable in relation to each other between a closed state and an open state and defining an arcing region, in which an arc is generated during a current interrupting operation and in which an arc-quenching medium comprising an organofluorine compound is present. According to the application, a counter-arcing component is allocated to the arcing region, the counter-arcing component being designed for counteracting the generation of an arc and/or being designed for supporting the extinction of an arc.Type: ApplicationFiled: October 13, 2017Publication date: February 8, 2018Inventors: Denis Tehlar, Martin Seeger, Nitesh Ranjan, Patrick Stoller, Raffael Buehler, Jan Carstensen
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Patent number: 9837230Abstract: Gas-insulated high voltage puffer breaker comprising a puffer unit with a movable piston running in a puffer cylinder and delimiting a puffer volume. A piston and a first contact member are attached to a piston stem. A piston and a first contact member are attached to a piston stem. An electric arc is extinguishable in an arcing zone when the first contact member moves from a first position to a second position. The puffer volume is fluidly connected to a gas nozzle by a gas channel such that the puffer volume comprises the gas channel as well as a portion of the puffer cylinder. The gas channel is provided radially outside of the puffer cylinder between a puffer cylinder wall delimiting the puffer cylinder and a wall structure of the puffer unit.Type: GrantFiled: December 2, 2016Date of Patent: December 5, 2017Assignee: ABB Schweiz AGInventors: Markus Bujotzek, Angelos Garyfallos, Philipp Simka, Emmanouil Panousis, Nitesh Ranjan
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Publication number: 20170084412Abstract: Gas-insulated high voltage puffer breaker comprising a puffer unit with a movable piston running in a puffer cylinder and delimiting a puffer volume. A piston and a first contact member are attached to a piston stem. A piston and a first contact member are attached to a piston stem. An electric arc is extinguishable in an arcing zone when the first contact member moves from a first position to a second position. The puffer volume is fluidly connected to a gas nozzle by a gas channel such that the puffer volume comprises the gas channel as well as a portion of the puffer cylinder. The gas channel is provided radially outside of the puffer cylinder between a puffer cylinder wall delimiting the puffer cylinder and a wall structure of the puffer unit.Type: ApplicationFiled: December 2, 2016Publication date: March 23, 2017Inventors: Markus Bujotzek, Angelos Garyfallos, Philipp Simka, Emmanouil Panousis, Nitesh Ranjan
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Patent number: 9590397Abstract: An apparatus for the generation, the distribution or the usage of electrical energy, the apparatus including a housing enclosing an insulating space and an electrical component arranged in the insulating space. The insulating space contains a dielectric insulation gas including an organofluorine compound A. The apparatus further includes a molecular sieve arranged such as to come into contact with the insulation gas. The molecular sieve has an average pore size y greater than the molecular size of at least one decomposition product of the organofluorine compound A generated during operation of the apparatus. The adsorption capability of the molecular sieve for organofluorine compound A is lower than for the at least one decomposition product. The apparatus further includes at least one desiccant arranged such as to come into contact with the insulation gas.Type: GrantFiled: April 6, 2015Date of Patent: March 7, 2017Assignee: ABB Technology AGInventors: Thomas Alfred Paul, Navid Mahdizadeh, Patrick Stoller, Axel Kramer, Oliver Cossalter, Stephan Grob, Nitesh Ranjan, Javier Mantilla, Mathias-Dominic Buergler, Francia Galindo-Lozano
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Publication number: 20150214701Abstract: An apparatus for the generation, the distribution or the usage of electrical energy, the apparatus including a housing enclosing an insulating space and an electrical component arranged in the insulating space. The insulating space contains a dielectric insulation gas including an organofluorine compound A. The apparatus further includes a molecular sieve arranged such as to come into contact with the insulation gas. The molecular sieve has an average pore size y greater than the molecular size of at least one decomposition product of the organofluorine compound A generated during operation of the apparatus. The adsorption capability of the molecular sieve for organofluorine compound A is lower than for the at least one decomposition product. The apparatus further includes at least one desiccant arranged such as to come into contact with the insulation gas.Type: ApplicationFiled: April 6, 2015Publication date: July 30, 2015Inventors: Thomas Alfred Paul, Navid Mahdizadeh, Patrick Stoller, Axel Kramer, Oliver Cossalter, Stephan Grob, Nitesh Ranjan, Javier Mantilla, Mathias-Dominic Buergler, Francia Galindo-Lozano
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Publication number: 20140306718Abstract: A method for deriving at least one operating parameter of a fluid-insulated electrical apparatus, in particular of gas-insulated switchgear. The operating parameter is dependent on a dielectric breakdown strength of an insulation fluid of the electrical apparatus. The insulation fluid includes at least three components that are assigned to at least a first and a second component group such that at least one component group comprises at least two components. The component groups differ in their weighted average values of the molecular masses of the components in the respective component groups. At least one quantity which is indicative of the concentration of the first component group and of the concentration of the second component group is determined from the insulation fluid, e.g. by measuring one or more measurement variables with one or more sensors. The operating parameter is then derived using the at least one quantity.Type: ApplicationFiled: June 13, 2014Publication date: October 16, 2014Inventors: Axel Kramer, Thomas Alfred Paul, Navid Mahdizadeh, Nitesh Ranjan