Patents Assigned to S & C Electric Company
  • Publication number: 20200161065
    Abstract: A switching module for use in a high voltage switch includes: a vacuum interrupter (VI), an elastomeric insulating sleeve disposed around the VI; an insulating housing molded around the VI and the sleeve; and a pair of grading capacitors. Each grading capacitor includes an inner and an outer electrode while insulation between the electrodes is solid insulation of the housing molded at the time when the housing is molded. One of the electrodes is galvanically connected to the fixed contact through a first terminal in the switching module and the other electrode is galvanically connected to the moving contact through a second terminal in the switching module. The capacitance of the first grading capacitor is substantially equal to the capacitance of the second grading capacitor.
    Type: Application
    Filed: October 29, 2019
    Publication date: May 21, 2020
    Applicant: S&C Electric Company
    Inventor: Goran Djogo
  • Publication number: 20200152408
    Abstract: A magnetic module in a circuit interrupting system is configured to generate a blow-on force that pushes a moving contact toward a stationary contact. The magnetic module includes: a coil conductor having an opening through which a moving stem of the moving contact may move, wherein the coil conductor is electrically connected to the moving stem and a first auxiliary conductor, wherein the coil conductor is configured to allow current to flow from the moving stem to the first auxiliary conductor; a plunger attached to an end of the moving stem; and a first magnetic core shaped to fit around a first section of the coil conductor, wherein the first magnetic core is configured, when current flows through the coil conductor to the first auxiliary conductor, to become magnetized, attract the plunger toward the magnetic core, and cause the moving stem of the moving contact to move toward the stationary contact.
    Type: Application
    Filed: October 29, 2019
    Publication date: May 14, 2020
    Applicant: S&C Electric Company
    Inventors: Goran Djogo, Richard George Smith, Daniel Hunter Desmond
  • Publication number: 20200144845
    Abstract: Electrical systems and related operating methods are provided. One exemplary electrical system includes a power conversion system, a plurality of battery strings, a plurality of switching arrangements configured electrically in series between the respective battery strings and an interface to the power conversion system, and a control system coupled to the plurality of switching arrangements. The switching arrangements are operated to electrically connect a selected one of the battery strings to the power conversion system while concurrently isolating remaining battery strings from the power conversion system and the selected battery string.
    Type: Application
    Filed: October 29, 2019
    Publication date: May 7, 2020
    Applicant: S&C Electric Company
    Inventors: Kleber V.C. Facchini, William Wayne Buckner, Stephen Ebert Williams, Benjamin Mayer Stocks
  • Patent number: 10643808
    Abstract: A vacuum switching device may have at least one cup-shaped contact closed by a disc of contact material and a conical mechanical support, which acts to prevent the contact disc from becoming concave. The cup-shaped contact may include a plurality of slots in the sidewalk that extend into the base of the cup, the slots oriented to produce an axial magnetic field when current flows through the contacts. The support may be made of a metal that is a poor conductor of electricity. The narrow end of the cone may be capped by a circular ring or disc, and the wide end may be formed with a flange. The flange may be circular and may be sized and formed to locate the cone centrally in the base of the contact cup. The cone may have apertures to facilitate the evacuation of gas inside the cone.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: May 5, 2020
    Assignee: S&C Electric Company
    Inventor: Leslie Thomas Falkingham
  • Publication number: 20200124642
    Abstract: A capacitive network for use in a voltage sensor includes a first conductor shaped to form a boundary that separates a first interior space and a first exterior space; a second conductor shaped to form a boundary that encircles a second interior space and separates the second interior space from a second exterior space; a third conductor disposed in the second interior space and having a line of sight to the first conductor through an opening in the second conductor; and an external insulator formed around the first conductor and the second conductor in the first exterior space and the second exterior space. A first capacitance is formed between the first conductor and the third conductor, a second capacitance is formed between the second conductor and the third conductor, and conductive material that may collect on the external insulator has negligible effect on the first capacitance and the second capacitance.
    Type: Application
    Filed: September 24, 2019
    Publication date: April 23, 2020
    Applicant: S&C Electric Company
    Inventor: Goran Djogo
  • Publication number: 20200118776
    Abstract: A pole unit including a vacuum interrupter switch having a fixed contact extending into one end of a vacuum chamber and being electrically coupled to a first terminal, and a moving contact extending into an opposite end of the chamber. A sliding contact is rigidly coupled to the moving contact and slidably coupled to a second terminal. The pole unit also includes an electromagnetic actuator including a coil, a rod coupled to the sliding contact and a spring positioned against the rod. The pole unit further includes a transmitter coil and a receiver coil that are electromagnetically coupled, where the receiver coil is electrically coupled to the actuator and is electrically isolated from the transmitter coil. In this configuration, the interrupter switch, the actuator and the receiver coil are at a line potential and the transmitter coil is at ground potential.
    Type: Application
    Filed: September 24, 2019
    Publication date: April 16, 2020
    Applicant: S&C Electric Company
    Inventors: Henry Kowalyshen, Keith Benson, Tsvetan Rusev
  • Publication number: 20200119546
    Abstract: A control system and method for a feeder, or portion of the distribution grid, which enables fault location, isolation and service restoration without communications between the feeder switches. The method uses definite time coordination between feeder switches and local measurements to determine which switches should open or close in order to isolate the fault and restore service downstream of a faulted section. Time-current characteristics and feeder topology are shared with all switches in the feeder prior to a fault event. When a disturbance occurs, a timer is started at each switch. When a switch measures voltage loss in all three phases, it stops its timer. Each switch evaluates the timer values and, when a particular switch determines based on the time-current characteristics that the immediate upstream switch opened to isolate the fault, that particular switch also opens. Power upstream of the particular switch is then provided by an alternative source.
    Type: Application
    Filed: September 24, 2019
    Publication date: April 16, 2020
    Applicant: S&C Electric Company
    Inventor: Michael Quinlan
  • Publication number: 20200111630
    Abstract: A vacuum switching device may have at least one cup-shaped contact closed by a disc of contact material and a conical mechanical support, which acts to prevent the contact disc from becoming concave. The cup-shaped contact may include a plurality of slots in the sidewalk that extend into the base of the cup, the slots oriented to produce an axial magnetic field when current flows through the contacts. The support may be made of a metal that is a poor conductor of electricity. The narrow end of the cone may be capped by a circular ring or disc, and the wide end may be formed with a flange. The flange may be circular and may be sized and formed to locate the cone centrally in the base of the contact cup. The cone may have apertures to facilitate the evacuation of gas inside the cone.
    Type: Application
    Filed: October 9, 2018
    Publication date: April 9, 2020
    Applicant: S&C Electric Company
    Inventor: Leslie Thomas Falkingham
  • Patent number: 10614531
    Abstract: A system and method for improving operation of power systems using global filtering criteria across multiple reports or dashboards is provided herein. The system and method may receive data regarding electric power system components, along with a filter selection from a power system operator. The operator's filter selection is applied to the received data, and a first summary is generated. Upon receiving a request to generate a second summary, the system and method apply the filters to the received data to generate a second summary without requiring additional filter selection. The power system operator may then use the generated data in operating the power system.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: April 7, 2020
    Assignee: S&C Electric Company
    Inventor: Gokturk Ozer
  • Patent number: 10608393
    Abstract: A cable adapter that is operable to electrically couple an existing switchgear cable used for old switchgear to a connection location on new switchgear. The adapter includes an elbow portion that is configured to be electrically coupled to a connector for the switchgear cable and an extension portion that is electrically coupled to the elbow portion. The adapter also includes a cylindrical connection portion electrically coupled to the extension portion and being configured to be electrically coupled to the new switchgear at the proper location. In one embodiment, the elbow portion, the extension portion and the connection portion combine as a single piece member including an internal conductor, a dielectric insulation rubber layer covering the internal conductor and an outer semi-conductive rubber layer covering the insulation layer, where the rubber layers are molded over the conductor.
    Type: Grant
    Filed: February 18, 2019
    Date of Patent: March 31, 2020
    Assignee: S&C Electric Company
    Inventors: Bethany K McDearmon, Karl M Bogacz, Michael R Maroney, David J Beseda
  • Publication number: 20200099217
    Abstract: Fault protection devices for electrical distribution systems and related reclosing methods are provided. One exemplary method of reclosing a switching element of a fault protection device after fault detection involves pulsing the switching element closed to enable a temporary current flow through the fault protection device and verifying absence of a fault condition based at least in part on the temporary current flow using a testing fault detection threshold. After verifying the absence of the fault condition, the method closes the switching element to enable current flow through the fault protection device, monitors the current flow through the fault protection device for the fault condition using the testing fault detection threshold for a transition period, and monitors the current flow through the fault protection device for the fault condition using a different fault detection threshold after the transition period.
    Type: Application
    Filed: September 6, 2019
    Publication date: March 26, 2020
    Applicant: S&C Electric Company
    Inventors: Michael John Meisinger, David Francis Klein
  • Patent number: 10600593
    Abstract: An alternating current vacuum switching device for switching an electrical circuit under load and no load conditions, and optionally short-circuit conditions is disclosed. The switching device comprises: a vacuum evacuated housing; first and second electrodes within the housing; and an actuator for moving the first electrode relative to the second electrode to mechanically engage and disengage the electrodes to perform a switching function, wherein the first electrode is wholly located within the vacuum evacuated housing such that movement of the switching function occurs solely within the housing. By having movement of the switching function solely within the housing, the reliability of the vacuum switching device is improved.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: March 24, 2020
    Assignee: S&C Electric Company
    Inventor: Leslie Thomas Falkingham
  • Patent number: 10593497
    Abstract: A system and method for changing protection settings groups for relays in a micro-grid between a grid-connected settings group and an islanded settings group. The method changes a power source relay from the grid-connected settings group to the islanded settings group before the micro-grid is disconnected from the utility grid, disconnects the micro-grid from the utility grid, and then changes a load relay from the grid-connected settings group to the islanded settings group after the micro-grid is disconnected from the utility grid. The method also changes the load relay from the islanded settings group to the grid-connected settings group before the micro-grid is connected to the utility grid, connects the micro-grid to the utility grid, and then changes the power source relay from the islanded settings group to the grid-connected settings group after the micro-grid is connected to the utility grid.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: March 17, 2020
    Assignee: S&C Electric Company
    Inventors: Paul Michael Pabst, Michael James Higginson
  • Patent number: 10587109
    Abstract: An air-termination adapter that encloses an air-termination connection assembly to electrically isolate components that are at hazardous voltages and allow the air-termination connection assembly to be coupled to a dead-front termination for electrical equipment. In one embodiment, the adapter includes an outer body having a lower conical section, a middle cylindrical section and an upper cylindrical connection section all defining an internal chamber. The air-termination connection assembly extends into the chamber from the bottom of the lower section and is coupled to a connector rod at one end. The connector rod is coupled to a connector associated with a conical interface in the connection section to provide the dead-front termination to the electrical equipment.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: March 10, 2020
    Assignee: S&C Electric Company
    Inventors: Michael R. Maroney, Phillip J. Fahey, David J. Beseda
  • Publication number: 20200075235
    Abstract: A current transformer assembly for harvesting power from a primary conductor, such as a power line, for operating electronics, where the assembly is secured to the conductor while the conductor is connected. The assembly includes a current transformer having a transformer structure with a central opening that accepts the primary conductor and a spindle member for accepting a current transformer magnetic tape operating as the core of the current transformer. The assembly also includes a tape carrier secured to the structure on which the transformer tape is wound, and a winding device operable to unwind the transformer tape from the tape carrier and wind the tape onto the spindle member.
    Type: Application
    Filed: August 30, 2019
    Publication date: March 5, 2020
    Applicant: S&C Electric Company
    Inventors: Alejandro Montenegro, Raphael Guio, Claire Schauble
  • Publication number: 20200076208
    Abstract: An energy storage system comprising a main bus, a transfer bus, and a pair of anti-parallel thyristors electrically coupled to the main bus and the transfer bus. The system also includes a first and second group of battery cells electrically coupled to the main bus and the transfer bus, and a switching network including a plurality of switches that selectively connect the first and second groups of battery cells to the main bus and the transfer bus. A controller controls the position of the switches and a bias voltage applied to the first and second thyristors so as to seamlessly transition power from the first group of battery cells to the second group of battery cells when the group of battery cells are being discharged and seamlessly transition power between the first group of battery cells and the second group of battery cells when the battery cells are being charged.
    Type: Application
    Filed: May 7, 2019
    Publication date: March 5, 2020
    Applicant: S&C Electric Company
    Inventors: Stephen E. Williams, David G. Porter
  • Publication number: 20200075282
    Abstract: A fuse link includes a conductive terminal component having a cylindrical insertion region with a knurled region formed therein and a fusible element electrically coupled thereto. A tubular sheath is configured to form a press-fit connection with the knurled region such that the tubular sheath substantially encloses the fusible element. The inner radius, the wall thickness, and the length of the tubular sheath are together configured to remain substantially intact when the fusible link experiences a first overload event within a first range of fault current values and burst when the fusible link experiences an overload event within a second range of fault current values that is greater than the first range.
    Type: Application
    Filed: November 8, 2019
    Publication date: March 5, 2020
    Applicant: S&C Electric Company
    Inventors: Christopher LETTOW, Jorge MONTANTE, Hector ROMAN, Richard G. SMITH
  • Patent number: 10581235
    Abstract: Methods and systems are provided for automatically coordinating protection settings for relays within an electrical power distribution network. A method includes using a graph traversal mechanism to analyze geographical-based equipment data that contains information about overcurrent relays within the electrical power distribution network. A customizable rule base is applied to protection guidelines. Protection settings are determined based upon the applied customizable rule base and the direction of fault current flow from each source. The determined protection settings are used for the overcurrent relays to control switches in the electrical power distribution network in response to a detected fault.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: March 3, 2020
    Assignee: S&C Electric Company
    Inventors: John Seuss, Yoav Sharon
  • Patent number: 10535993
    Abstract: A method for correcting protection settings in a relay provided in a micro-grid between a grid-connected settings group when the micro-grid is electrically coupled to a utility grid and an islanded settings group when the micro-grid is disconnected from the utility grid. The method determines whether the micro-grid is connected to the utility grid and what settings group the relay is in. The method changes the settings group of the relay to the grid-connected settings group if a time that the micro-grid is connected to the utility grid and the relay is in the islanded settings group exceeds a predetermined time and changes the settings group of the relay to the islanded settings group if the time that the micro-grid is not connected to the utility grid and the relay is in the grid-connected settings group exceeds the predetermined time.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: January 14, 2020
    Assignee: S&C Electric Company
    Inventors: Paul Michael Pabst, Michael James Higginson, Keith Moses
  • Patent number: 10504678
    Abstract: A remote access pull rig for opening a fuse associated with a power distribution system is provided. The remote access pull rig includes a base adapted to be coupled to the fuse and a first leg coupled to the base. The first leg includes a first clamp. The remote access pull rig also includes a second leg coupled to the base. The first leg and the second leg extend along a longitudinal axis of the remote access pull rig, and the second leg including a second clamp. The remote access pull rig includes an arm coupled to the base. The arm extends along an axis transverse to the longitudinal axis and includes a third clamp.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: December 10, 2019
    Assignee: S&C Electric Company
    Inventors: Richard George Smith, Christopher Lettow