General Electric Company

Stanley Black Decker, Inc.

Michael Sullivan Tignor

John James Dougherty

Craig Benjamin Williams

Michael B Bradley

Mark Fredrick Culler

Geoff F Butland

Paul T Rajotte

Nataniel Barbosa Vicente

David Geer Fletcher

Michael H Thomas

Geoffrey Freeman Butland

LeeAnne Wambolt

Patrick Salas

Raymond K Seymour

Gregory Paul Lavoie

Thomas M Kowalczyk

Thomas Frederick Papallo, Jr

Henry Hall Mason, Jr

Marshall B Hart

Anthony Robert Ranaudo

Michael Arthur Salvietti

Greg Lavoie

LeAnne Wambolt

Jonathan M Braverman

An automatic door system includes a door controller having a plurality of door operation modes. A door driver mechanism is electrically coupled to the door controller, and operatively coupled to a door. A door system user interface is communicatively coupled to the door controller. The door system user interface has a processor unit configured to store a plurality of door operation schedules, with each door operation schedule having an execution date, an execution time, and a door operation mode of the plurality of door operation modes. The processor unit is configured to execute program instructions to: monitor a current date and time; select as an active operation schedule the door operation schedule having the execution date and the execution time that corresponds to the current date and the current time, and select at the door controller the door operation mode corresponding to that of the active operation schedule.

Automatic door system with door system user interface

A door operator operates a door that is rotatable about an axis of rotation between an open position and a closed position. The door operator comprises an output shaft, a closing assembly, and a motor. The output shaft is rotatable between a first position and a second position, and is coupled to the door such that rotation of the output shaft pivots the door about the axis of rotation and rotation of the door about the axis of rotation rotates the output shaft. The closing assembly is coupled to the output shaft to apply a torque to the output shaft, wherein the torque applied by the closing assembly rotates the output shaft such that the rotation of the output shaft by the closing assembly rotates the door toward the closed position. The motor is coupled to the output shaft via a clutch to selectively apply opening and/or closing torque to the output shaft.

Door operating system

An electronic trip unit for a circuit breaker is disclosed. The electronic trip unit has a processing circuit, and a real time clock circuit that is operational in the absence of current in the circuit breaker. The processing circuit is responsive to input signals representative of a current in the circuit breaker, and the real time clock circuit is in signal communication with the processing circuit. In response to an off event at the circuit breaker following a current flow condition thereat, the real time clock circuit is configured to generate time information relating to the circuit breaker being off as a result of the off event for use by the processing circuit.

Electronic trip unit for circuit breakers

A method for recording and having analyzed waveform data associated with an electronic circuit breaker having an electronic trip unit is disclosed. The electronic trip unit has a communication port and is capable of providing to the communication port a first signal representative of a phase current passing through the circuit breaker, and a second signal representative of a conditional event at the circuit breaker. The method includes facilitating the connection of a waveform recorder device to the communication port of the electronic trip unit; facilitating recording in a first memory of the waveform recorder device in a circular queue fashion information relating to the first signal received from the electronic trip unit; and, in response to the second signal received from the electronic trip unit, facilitating the stopping of the recording in the first memory.

Waveform recorder apparatus and method

A waveform recorder device for mounting to an electronic circuit breaker having an electronic trip unit and a communication port is disclosed. The device includes a connector configured to connect with the communication port, and a processing circuit in signal communication with the connector. The processing circuit is responsive to instructions which, when executed by the processing circuit, facilitate responding to a conditional signal received from the circuit breaker, and in response thereto recording waveform information arising from an additional signal received from the circuit breaker.

An electronic trip unit for a circuit breaker is disclosed. The electronic trip unit has a processing circuit, a real time clock chip, and a power source for powering the real time clock chip in the absence of current in the circuit breaker. The processing circuit is responsive to input signals representative of a current in the circuit breaker, and productive of a trip signal for tripping the circuit breaker. The real time clock chip is in signal communication with the processing circuit. In response to an off event at the circuit breaker following a current flow condition thereat, the real time clock chip is configured to generate time information for use by the processing circuit, which is configured to apply the time information to calculate a cooling effect arising from the circuit breaker being off, thereby providing for thermal memory.

An electronic trip unit for a circuit breaker includes a programmed microprocessor and a module plug in removable signal communication with the microprocessor. The module plug includes a program identifier. The microprocessor recognizes the program identifier and accesses a program of a plurality of programs external to the module plug based on the program identifier. The microprocessor responds to the program to perform a function identified by the module plug. The function identifiable by the module plug includes a communications function, a load monitoring function, a non-tripping ground fault alarm function, a flag function, or any combination thereof.

Method and apparatus for accessing and activating accessory functions of electronic circuit breakers

A device for testing for a wiring fault condition is disclosed. The device includes an electrical connector, a first signal generator, a second signal generator, and a user interface. The electrical connector includes first and second contacts that are configured to establish an electrical connection to the wiring. The first signal generator is in signal communication with the electrical connector, and is configured to generate a signal on the wiring and to receive a reflected signal therefrom. The second signal generator is in signal communication with the electrical connector, and is configured to generate a radio frequency signal on the wiring. The user interface is in signal communication with either or both of the first and second signal generators.

Device and method for testing for a wiring fault condition

Improvements to a rating plug for an electronic trip unit of a circuit breaker are disclosed. The rating plug includes a non-volatile memory which has access to current and frame rating information. A microcomputer in the electronic trip unit may receive new current rating information over the World Wide Web from a vendor system to update the current rating information of the rating plug. A program within the circuit breaker may detect errors in the new current rating information and may reject such and revert to a safe mode of operation. A billing system may be connected to the vendor system for calculating charges based on the transmission of the new current rating information. Preferably, the non-volatile memory of the rating plug is programmed at the factory site and a label adhered to the outer case of the rating plug for indicating the current rating. The rating plug may then be inserted within the electronic circuit breaker at the field and the current rating altered as necessary using the remote altering system.

World wide web enabled and digital rating plug

A method and apparatus for rejection of an inappropriate rating plug in an electronic trip unit for a circuit breaker including: a microprocessor programmed to determine an overcurrent condition of the circuit breaker; a nonvolatile memory in operable communication with the microprocessor; the rating plug releasably engaged with the microprocessor, the rating plug includes an identification register; wherein the microprocessor reads the identification register, the identification register includes an identification number; wherein the microprocessor accesses one of a plurality of programs in the nonvolatile memory based on the identification number; and wherein the one of a plurality of programs instructs said microprocessor to perform a validation of said rating plug for operation with said microprocessor.

Digital rating plug for electronic trip unit in circuit breakers

A circuit monitoring system for performing synchronized waveform capture. A waveform capture trigger communication network interconnects a plurality of monitoring devices. The system provides direct device to device trigger communication between monitoring devices in a synchronized group. Power system waveform data is stored in the monitoring device memory of all members of the synchronized group in response to a trigger event initiated by any monitoring device in the synchronized group. High speed trigger communication results in substantially simultaneous waveform capture among the members of the synchronized group.

Power system waveform capture

A trip unit and circuit breaker including the trip unit include phase protection circuits, a ground fault protection circuit, and, a phase current qualification circuit intermediate the phase protection circuits and the ground fault protection circuit, wherein the phase current qualification circuit includes circuitry for determining a minimum ground fault setting for detected phase currents.

Trip unit and circuit breaker to prevent nuissance tripping

An electronic trip unit for a circuit breaker includes: a microprocessor, the microprocessor programmed to determine an overcurrent condition of the circuit breaker; a nonvolatile memory in electronic communication with the microprocessor; a module plug releasably engaged with the microprocessor, the module plug includes an identification register; wherein the microprocessor reads the identification register, the identification register including an identification number; wherein the microprocessor accesses one of a plurality of programs in the nonvolatile memory based the identification number; and wherein the one of a plurality of programs instructs the microprocessor to perform steps necessary to operate one or more functions of the module plug.

Module plug for an electronic trip unit

A verifying trip unit includes a microcontroller providing a plurality of input signals to a logic device for controlling a trip unit actuator. The logic device produces an output signal for controlling a trip unit actuator. In response to the plurality of input signals, the logic device provides an output signal indicative of a function performed on the signals for opening the circuit breaker contacts in an overcurrent condition.

Trip signal verifying method and apparatus

A method for ground fault circuit interruption is disclosed in which the method includes determining a minimum ground fault setting for detected phase currents, comparing the minimum ground fault setting to a customer provided threshold, determining a maximum value between the minimum ground fault setting and the customer provided threshold, and, utilizing the maximum value as a ground fault threshold. A storage medium encoded with machine-readable computer program code for determining a ground fault threshold may include instructions for causing a circuit breaker microprocessor to implement the method. A trip unit and a circuit breaker including the trip unit are also disclosed which may include phase protection circuits, a ground fault protection circuit, and, a phase current qualification circuit intermediate the phase protection circuits and the ground fault protection circuit, wherein the phase current qualification circuit includes circuitry for determining a minimum ground fault setting for detected phase currents.

Growing community of inventors

Watertown, CT, United States of America

Michael Sullivan Tignor