Patents by Inventor Gary W. Scott

Gary W. Scott 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).

  • Publication number: 20200185902
    Abstract: Example embodiments of the invention include a powdered core bead body configured to become an inductive impedance to current signals with high frequencies in a power wire threaded through the powdered core bead body. The signals are detectable by a high frequency voltage sensor that is configured to output an arc fault tripping indication to an arc fault tripping circuit in response to an occurrence of high frequency current signals in the power wire.
    Type: Application
    Filed: December 7, 2018
    Publication date: June 11, 2020
    Applicant: SCHNEIDER ELECTRIC USA, INC.
    Inventors: Andi JAKUPI, Gary W. SCOTT
  • Publication number: 20190386478
    Abstract: Systems and methods for detecting an arc fault in a circuit breaker use a single-coil current rate of change (di/dt) sensor for monitoring both low frequency alternating current (AC) and broadband high frequency noise on a power line. The di/dt sensor is optimized to amplify any broadband high frequency noise, typically from about 1 MHz to 40 MHz, that may be present on the power line. Low frequency signals representing the current being monitored, typically from about 1 Hz to 10 KHz, is provided to an active integrator circuit with a high gain to enable the single-coil sensitivity. To shorten capacitor charge up time of the active integrator circuit, a charging current is provided to the active integrator circuit upon startup of the circuit breaker.
    Type: Application
    Filed: June 15, 2018
    Publication date: December 19, 2019
    Applicant: Schneider Electric USA, Inc.
    Inventors: Hynek RAISIGEL, Gary W. Scott, Michel LAYOUR, Andi JAKUPI
  • Patent number: 8547669
    Abstract: Systems, methods, and devices are presented for mitigating arc fault events in a photovoltaic system. An aspect of this disclosure is directed to a photovoltaic system for generating electrical power. The photovoltaic system includes one or more solar panels, and one or more shuttering assemblies, each of which is configured to selectively limit the quantity of light received by one or more of the solar panels. One or more sensing devices detect characteristics of an arc fault event in the photovoltaic system, and output signals indicative thereof. A control module is operatively connected to the shuttering assemblies and the sensing devices. The control module is configured to direct the one or more shuttering assemblies to reduce the quantity of light received by at least one of the one or more solar panels in response to the output signals indicating there is an arc fault event in the photovoltaic system.
    Type: Grant
    Filed: January 12, 2011
    Date of Patent: October 1, 2013
    Assignee: Schneider Electric USA, Inc.
    Inventors: Brett E. Larson, Gary W. Scott
  • Patent number: 8542021
    Abstract: A fault detection system is provided for a power distribution system having at least first and second line conductors carrying AC currents that are out of phase with each other from a source to a load, and a common neutral conductor. The system includes an arcing fault current sensor comprising a coil wound on a hollow core and coupled to both of the line conductors in a manner that the electrical currents in the line conductors flow in opposite directions inside the hollow core, thus inducing in the coil an output signal that is a function of the difference of the electrical currents in the line conductors. A neutral current sensor produces an output signal representing the magnitude and phase direction of current in the neutral conductor.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: September 24, 2013
    Assignee: Schneider Electric USA, Inc.
    Inventors: Gary W. Scott, Paul A. Reid
  • Patent number: 8319136
    Abstract: A high-speed arc terminator for an electrical power distribution system includes a sealed, evacuated housing, and a controllable mechanical switch having first and second electrically conductive contacts enclosed within the housing and adapted to be coupled to the power distribution system outside the housing. A trigger conductor extends into the housing and has an exposed end near the gap between the contacts when the contacts are in the open position. At least one of the contacts is movable between an open position in which the contacts are separated by a gap, and a closed position in which the contacts engage each other, and an operating mechanism is provided for moving the at least one contact between the open and closed positions. A high voltage source is controllably coupled to the trigger conductor for supplying a high-voltage pulse to the trigger conductor in response to the detection of an arcing fault.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: November 27, 2012
    Assignee: Schneider Electric USA, Inc.
    Inventors: Eldridge R. Byron, Gary W. Scott, Carlton Rodrigues, Jim Ramsey, Philippe Picot
  • Publication number: 20120174961
    Abstract: Systems, methods, and devices are presented for mitigating arc fault events in a photovoltaic system. An aspect of this disclosure is directed to a photovoltaic system for generating electrical power. The photovoltaic system includes one or more solar panels, and one or more shuttering assemblies, each of which is configured to selectively limit the quantity of light received by one or more of the solar panels. One or more sensing devices detect characteristics of an arc fault event in the photovoltaic system, and output signals indicative thereof. A control module is operatively connected to the shuttering assemblies and the sensing devices. The control module is configured to direct the one or more shuttering assemblies to reduce the quantity of light received by at least one of the one or more solar panels in response to the output signals indicating there is an arc fault event in the photovoltaic system.
    Type: Application
    Filed: January 12, 2011
    Publication date: July 12, 2012
    Applicant: Schneider Electric USA, Inc.
    Inventors: BRETT E. LARSON, Gary W. Scott
  • Publication number: 20120119751
    Abstract: A fault detection system is provided for a power distribution system having at least first and second line conductors carrying AC currents that are out of phase with each other from a source to a load, and a common neutral conductor. The system includes an arcing fault current sensor comprising a coil wound on a hollow core and coupled to both of the line conductors in a manner that the electrical currents in the line conductors flow in opposite directions inside the hollow core, thus inducing in the coil an output signal that is a function of the difference of the electrical currents in the line conductors. A neutral current sensor produces an output signal representing the magnitude and phase direction of current in the neutral conductor.
    Type: Application
    Filed: November 16, 2010
    Publication date: May 17, 2012
    Applicant: Schneider Electric USA, Inc.
    Inventors: Gary W. Scott, Paul A. Reid
  • Patent number: 8111148
    Abstract: A wireless electrically isolated plug-n-play communications system for branch circuit breakers. The system providing means for automatically connecting the wireless electrically isolated communication system between the branch circuit breaker and a communications strip as the branch circuit breaker is being installed in the load center.
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: February 7, 2012
    Inventors: Kevin L. Parker, Gary B. Pollard, Gary W. Scott
  • Publication number: 20110315662
    Abstract: A high-speed arc terminator for an electrical power distribution system includes a sealed, evacuated housing, and a controllable mechanical switch having first and second electrically conductive contacts enclosed within the housing and adapted to be coupled to the power distribution system outside the housing. A trigger conductor extends into the housing and has an exposed end near the gap between the contacts when the contacts are in the open position. At least one of the contacts is movable between an open position in which the contacts are separated by a gap, and a closed position in which the contacts engage each other, and an operating mechanism is provided for moving the at least one contact between the open and closed positions. A high voltage source is controllably coupled to the trigger conductor for supplying a high-voltage pulse to the trigger conductor in response to the detection of an arcing fault.
    Type: Application
    Filed: June 29, 2010
    Publication date: December 29, 2011
    Applicant: Schneider Electric USA, Inc.
    Inventors: Eldridge R. Byron, Gary W. Scott, Carlton Rodrigues, Jim Ramsey, Philippe Picot
  • Patent number: 7944654
    Abstract: A multi-pole circuit breaker for a power distribution system having multiple line conductors carrying AC currents that are out of phase with each other, and a common neutral conductor, comprises first and second current sensors, a ground fault detection circuit, and an arcing fault detection circuit. The first current sensor is adapted to be coupled to both of the line conductors and to the neutral conductor and produces a first output signal indicative of the resultant of the electrical currents flowing in the line and neutral conductors. The ground fault detection circuit receives the first output signal and produces a trip signal in response to the detection of a ground fault.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: May 17, 2011
    Inventors: Gary W. Scott, Randall J. Gass
  • Publication number: 20100164744
    Abstract: A wireless electrically isolated plug-n-play communications system for branch circuit breakers. The system providing means for automatically connecting the wireless electrically isolated communication system between the branch circuit breaker and a communications strip as the branch circuit breaker is being installed in the load center.
    Type: Application
    Filed: December 30, 2008
    Publication date: July 1, 2010
    Inventors: Kevin L. Parker, Gary B. Pollard, Gary W. Scott
  • Publication number: 20100118451
    Abstract: A multi-pole circuit breaker for a power distribution system having multiple line conductors carrying AC currents that are out of phase with each other, and a common neutral conductor, comprises first and second current sensors, a ground fault detection circuit, and an arcing fault detection circuit. The first current sensor is adapted to be coupled to both of the line conductors and to the neutral conductor and produces a first output signal indicative of the resultant of the electrical currents flowing in the line and neutral conductors. The ground fault detection circuit receives the first output signal and produces a trip signal in response to the detection of a ground fault.
    Type: Application
    Filed: November 10, 2008
    Publication date: May 13, 2010
    Applicant: SQUARE D COMPANY
    Inventors: Gary W. Scott, Randall J. Gass
  • Patent number: 7680561
    Abstract: An intelligent power management system that includes a circuit breaker containing a PLC module that spans open contacts of the circuit breaker to provide a communication path for PLC messages between communication paths on each of the line and load sides of the circuit when the contacts are open. The contacts are motorized to permit remote operation through PLC messaging. Coupled to the PLC module is a controller, which controls the opening and closing of the motorized contacts under user control or via an adaptive load management algorithm that reduces peak power consumption and adapts a set of loads to changed power supply conditions. The controller can also dynamically alter operational current and fault threshold levels on a real-time basis based upon circuit requirements or environmental conditions. The algorithm runs a state machine and also manages loads in a limited power source environment such as when loads are powered by a generator.
    Type: Grant
    Filed: September 14, 2006
    Date of Patent: March 16, 2010
    Assignee: Schneider Electric USA, Inc.
    Inventors: Barry Noel Rodgers, Andy Allen Haun, Robert Joseph Dwulet, Mark John Kocher, Julius Michael Liptak, Alexander Filippenko, Scott Robert Brown, Gary Myron Kuzkin, Gary W. Scott
  • Patent number: 7136265
    Abstract: A method and system for determining whether arcing is present in an electrical circuit includes sensing a change in an alternating current in the circuit and developing a corresponding input signal, analyzing the input signal to determine the presence of broadband noise in a predetermined range of frequencies, and producing a corresponding output signal, and processing the input signal and the output signal in a predetermined fashion to determine whether an arcing fault is present in the circuit. The processing includes determining a type of load connected to the electrical circuit, based at least in part upon the input signal and the output signal, and monitoring high frequency noise in a 20 KHz band for each ? cycle of the alternating current.
    Type: Grant
    Filed: May 13, 2003
    Date of Patent: November 14, 2006
    Assignee: Square D Company
    Inventors: Kon B. Wong, Gary W. Scott, Robert F. Dvorak
  • Patent number: 7068480
    Abstract: A method of determining whether arcing is present in an electrical circuit includes sensing a change in current in the circuit and developing a corresponding input signal, analyzing the input signal to determine the presence of broadband noise in a predetermined range of frequencies, and producing a corresponding output signal, and processing the input signal and the output signal in a predetermined fashion to determine whether an arcing fault is present in the circuit. The processing includes determining a type of load connected to the electrical circuit, based at least in part upon the input signal and the output signal.
    Type: Grant
    Filed: March 27, 2002
    Date of Patent: June 27, 2006
    Assignee: Square D Company
    Inventors: Kon B. Wong, Gary W. Scott
  • Patent number: 6782329
    Abstract: A zone arc fault detection system for detecting arcing faults in a defined zone of an electrical circuit, such as an aircraft circuit, includes a pair of substantially identical parallel insulated conductors for each zone in which arcing is to be detected. A detection zone is defined by the parallel conductors between end points where the two conductors are coupled together. A current sensor is operatively associated with each pair of parallel conductors. The current sensor and conductors are respectively configured and arranged such that the current sensor produces a signal representative of a difference in current between the two conductors.
    Type: Grant
    Filed: January 17, 2001
    Date of Patent: August 24, 2004
    Assignee: Square D Company
    Inventor: Gary W. Scott
  • Publication number: 20040042137
    Abstract: A method and system for determining whether arcing is present in an electrical circuit includes sensing a change in an alternating current in the circuit and developing a corresponding input signal, analyzing the input signal to determine the presence of broadband noise in a predetermined range of frequencies, and producing a corresponding output signal, and processing the input signal and the output signal in a predetermined fashion to determine whether an arcing fault is present in the circuit. The processing includes determining a type of load connected to the electrical circuit, based at least in part upon the input signal and the output signal, and monitoring high frequency noise in a 20 KHz band for each ⅛ cycle of the alternating current.
    Type: Application
    Filed: May 13, 2003
    Publication date: March 4, 2004
    Inventors: Kon B. Wong, Gary W. Scott, Robert F. Dvorak
  • Patent number: 6625550
    Abstract: An arc fault detector system detects arcing faults in an electrical distribution system by monitoring one or more conductors and producing an input signal representing one or more electrical signal conditions in the circuit to be monitored. This input signal is processed to develop signals representing the electrical current flow through the monitored circuit and broadband noise signal components. The system analyzes these signals to determine whether an arcing fault is present, and if so, outputs a trip signal which may be used directly or indirectly to trip a circuit breaker or other circuit interruption device.
    Type: Grant
    Filed: October 26, 1999
    Date of Patent: September 23, 2003
    Assignee: Square D Company
    Inventors: Gary W. Scott, Kon B. Wong
  • Patent number: 6563420
    Abstract: A power line communications apparatus and method for providing communications over power leads connecting two pieces of electrical equipment. One power lead is split into similarly sized first and second parallel conductors. The first and second conductors pass through a current transformer, the first conductor having a load current flow opposite the second conductor with respect to the current transformer. The transmitted communications signal is applied to the secondary of the current transformer and is induced on the primary of the transformer, namely a loop formed by the first and second conductors. A second current transformer serves as a receiving transducer and senses the communications signal on the first and second conductors.
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: May 13, 2003
    Assignee: Square D Company
    Inventors: Scott R. Brown, Gary W. Scott
  • Publication number: 20030072113
    Abstract: A method of determining whether arcing is present in an electrical circuit includes sensing a change in current in the circuit and developing a corresponding input signal, analyzing the input signal to determine the presence of broadband noise in a predetermined range of frequencies, and producing a corresponding output signal, and processing the input signal and the output signal in a predetermined fashion to determine whether an arcing fault is present in the circuit. The processing includes determining a type of load connected to the electrical circuit, based at least in part upon the input signal and the output signal.
    Type: Application
    Filed: March 27, 2002
    Publication date: April 17, 2003
    Inventors: Kon B. Wong, Gary W. Scott