General Electric Company

Abb Schweiz Ag

Thomas Frederick Papallo, Jr

Roger J Morgan

Irenaeus S Panus

Ronald G Pekrul

Robert Allan Morris

Roger N Castonguay

Cecil Rivers

Hamon L Craft

Henry J Tucholski

George William Roscoe

Raymond K Seymour

Ahmed Elasser

Gregory Paul Lavoie

Marcelo Esteban Valdes

Radoslaw Narel

William James Premerlani

Randall Lee Greenberg

Theodore Drummond Hill, Iii

Richard L Hein

Bharat S Bagepalli

John James Dougherty

Kanakasabapathi Subramanian

Govardhan Ganireddy

Michael Solomon Idelchik

Aniruddha Dattatraya Gadre

Robert Joseph Caggiano

Mohamed Ahmed Ali

Douglas J Snyder

Thangavelu Asokan

Peter James Greenwood

Mark A Preston

Brian D Lounsberry

Brent Charles Kumfer

Michael Sullivan Tignor

David Geer Fletcher

Mark Fredrick Culler

Linda Yvonne Jacobs

Thomas Gerard Ebben

William H Calder

Bijan Dorri

Jason Edward Harmon

Arlie Russell Martin

Gary Douville

Brian Frederick Mooney

Daniel Edward Delfino

Sriram Ramakrishnan

Khan Mohamed Khirullah Genghis Khan

Joseph Yuan Rao

Keith J Kucinskas

Chanchal Kumar Garg

Dennis Wayne Heath

Jeremy David Smith

Anupam Tiwari

Methods and systems for monitoring devices in a power distribution system are described. In one example, a method for use in a power distribution system including a plurality of devices is described. The method includes receiving a plurality of data signals associated with the power distribution system, determining a measurement error value associated with the power distribution system based on the plurality of data signals, comparing the determined measurement error value to a dynamic threshold, and generating an alert when the determined measurement error value exceeds the dynamic threshold.

Methods and systems for monitoring devices in a power distribution system

In one aspect, an apparatus, such as an electrical system, is provided. The electrical system can include a pair of conductors across which an arc is sporadically supported, the arc including load current from a load circuit. The electrical system can also include an energy source that is separate from the load circuit and configured to selectively charge an electrode assembly. The conductors and electrode assembly can be configured such that the arc, when present, will be lengthened or constricted due to the charge on the electrode assembly.

Apparatus for interrupting current

A load shedding system for operating at least one circuit breaker positioned within an enclosure is described. The load shedding system includes a processor configured to receive a demand signal and to provide a predetermined load shedding signal. The load shedding system also includes at least one load shedding apparatus configured to receive the load shedding signal from the processor. The load shedding apparatus is configured to be coupled to a door of the enclosure. The load shedding apparatus is further configured to be operatively coupled to the at least one circuit breaker and further configured to actuate the at least one circuit breaker in response to the load shedding signal.

Methods, systems, and apparatus for shedding loads from an electrical grid

An electrical distribution system includes at least one circuit breaker device having an electrical interruption system provided with an electrical pathway, at least one micro electro-mechanical switch (MEMS) device electrically coupled in the electrical pathway, at least one hybrid arcless limiting technology (HALT) connection, and at least one control connection. A HALT circuit member is electrically coupled to HALT connection on the circuit breaker device and a controller is electrically coupled to the control connection on the circuit breaker device. The controller is configured and disposed to selectively connect the HALT circuit member and the at least one circuit breaker device via the HALT connection to control electrical current flow through the at least one circuit breaker device.

Electrical distribution system including micro electro-mechanical switch (MEMS) devices

A power equipment protection system includes a circuit breaker, a current sensor configured to measure a current through a circuit, a light sensor configured to detect a light event, and a controller communicatively coupled to the current sensor and to the light sensor, wherein the controller is configured to determine whether the light event originated from operation of the circuit breaker.

Methods, systems, and apparatus for detecting arc flash events using light and time discrimination

An energy management system manages energy consumption of managed device(s) disposed to receive energy via a meter connected to an energy supply, the energy supply. A system controller has a computer processor that instructs the managed device(s) to employ an operational mode based on the priority, the energy need, the demand state, and whether the energy consumption rate of the managed device(s) exceeds energy available from at least one of the external energy source and internal energy source.

Energy management system and method

A leakage current masking device for use with a circuit includes at least one inductive load device coupled to the circuit and configured to supply an inductive load to the circuit, and a processor communicatively coupled to the inductive load device. The processor is configured to receive a signal representative of a current through the circuit, calculate a capacitive leakage current component of the current, and cause the inductive load device to adjust the inductive load supplied to the circuit to reduce the capacitive leakage current component.

Systems, methods, and apparatus for leakage current masking and ground fault detection

A method of circuit breaker control includes determining if a trip event for a circuit breaker has occurred, determining a set of redundancy parameters for the circuit breaker, and transmitting a trip signal and a shunt trip signal to the circuit breaker based on the set of redundancy parameters.

Circuit breaker control

A motor control center communication system configured to interface with a communication network. The system includes a plurality of motor control units (MCUs), and a MCU controller configured to transmit and receive data signals via the communication network to and from, the plurality of MCUs. Each of the plurality of MCUs includes a magnetic contactor having electrical contacts operable between open and closed positions, and a local control module operatively connected to the associated magnetic contactor and to the MCU controller, and configured to monitor a status of the electrical contacts, transmit the monitored status information to the MCU controller, and actuate the associated magnetic contactor based on data signals received from the MCU controller.

Motor control center communication system

A device and method to determine the presence of a ground fault that distinguishes between the capacitive portion of the currents to ground, and the resistive portion of the currents to ground by ascertaining aspects of the voltage and residual current waveforms.

Ground fault detection device

An arc flash system for a circuit breaker and a method of operation is provided. The arc flash system includes a first sensor such as a photo-detector and a second sensor that detects a circuit breaker parameter. The arc flash system is responsive to signals from the first sensor and second sensor to determine if an arc flash event is occurring to avoid nuisance tripping of the circuit breaker.

Arc flash detection system, apparatus and method

A method of operating a relay device, in an electrical circuit comprising first and second main circuit breakers, and a bus tie circuit breaker connecting the first and second main circuit breakers, the method comprising computing a first positive sequence current phasor for the first main circuit breaker and a second positive sequence current phasor for the second main circuit breaker computing a first positive sequence voltage phasor for the first main circuit breaker and a second positive sequence voltage phasor for the second main circuit breaker; computing a correction of the first positive sequence voltage and second positive sequence voltage to a line-to-neutral phase angle reference if there is any rotation in a potential transformer connection; determining a fault has occurred when a magnitude of a current through at least one of the first main circuit breaker or the second main circuit breaker exceeds a predetermined threshold; determining a phase angle difference by comparing the phase angle of the positive sequence current phasor with the phase angle of the positive sequence voltage phasor for both the first main circuit breaker or the second main circuit breaker having the magnitude of current determined to have exceeded the predetermined level; and determining the fault is located upstream or downstream of the first main circuit breaker or the second main circuit breaker having the magnitude of current determined to have exceeded the predetermined level, if the phase angle difference is determined to be above a predetermined amount.

Relay device and corresponding method

A method of operating a relay device, the method comprising the steps of: providing main circuit-breakers and a bus-tie-breaker connecting the main-circuit-breakers; defining a partial-differential-zone comprising a main circuit breaker and the bus-tie breaker; assigning a first value to the direction of the fault current flowing into the partial differential zone;&#x2014;assigning a second value to the direction of the fault currents flowing out of the partial-differential-zone, wherein the first value is not equal to the second value;&#x2014;comparing the values assigned to the fault currents; determining if the fault currents are flowing into the partial differential zone; and determining if at least two of the fault-currents is flowing in a different direction with respect to the partial-differential-zone wherein one of the fault currents is flowing into the partial-differential-zone and one of the fault currents is flowing out of the partial differential zone.

An electrically isolating iso bearing for a circuit breaker is provided that comprises an inner surface, an outer surface, and a body extending therebetween, said inner surface comprising a pair of bosses and a pair of openings, said outer surface comprising at least one boss, said body comprising a pair of rotor protective flaps.

Apparatus for electrically isolating circuit breaker rotor components

A panelboard configured for distributing electricity from a power source, the panelboard comprising circuitry for distributing the electricity from the power source, the circuitry comprising a plurality of branch circuits for distributing electricity to associated loads; a plurality of branch circuit breakers, each branch circuit breaker intermediate the power source and the plurality of branch circuits; and an electronic control module for controlling the main circuit breaker and the plurality of branch circuit breakers, the electronic control module provides a protection function and a monitoring function of the circuitry, each branch circuit breaker of the plurality of branch circuit breakers includes; a pair of separable contacts, an electromagnetic actuator in electrical communication with the electronic control module for operably controlling the pair of separable contacts, and a current transformer configured to sense current on the circuitry to one of the associated loads. A method is also described for providing overcurrent protection and control to an electric circuit with a single controller, the method comprising: receiving a trip setting value selected for each branch circuit of a plurality of branch circuits; storing the trip setting value in non-volatile memory; receiving a plurality of sensed signals from a current sensing device employed in the each branch circuit indicating a current therethrough; processing the plurality of sensed signals to detect an overcurrent condition in the each branch circuit; and generating a trip signal to an electromagnetic device coupled to separable contacts employed in each circuit breaker of the each branch circuit for interrupting current therein when an overcurrent condition is detected.

Compact low AMP electronic circuit breaker or residential load center

Growing community of inventors

Farmington, CT, United States of America

Thomas Frederick Papallo, Jr