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| Number | Title | Issue Date |
| 8189311 | Circuit breaker control 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 th... | 05/29/2012 |
| 8144442 | Power protection in a multi-level power hierarchy Embodiments of a multi-level power hierarchy are described. This power hierarchy contains a higher level, which includes a first sub-circuit, and a lower level, which includes a second sub-circuit and a third sub-circuit. Moreover, the second sub-circuit and the thi... | 03/27/2012 |
| 8111492 | Apparatus, system, and method for creating one or more slow-speed communications channels utilizing a real-time communication channel An intelligent electronic device creates one or more virtual communications channels using unused or dedicated bits from a primary real-time communications channel. The virtual communications channels are used to transport low-speed information, such as executable c... | 02/07/2012 |
| 7952846 | Power line communication method In an electric power transmission network, comprising several substations interconnected by power transmission lines, a communication device of a substation communicates over a power transmission line to a communication device of a neighboring substation by using co... | 05/31/2011 |
| 7751166 | Advanced feeder architecture with automated power restoration A method and apparatus for restoring power to loads connected to a feeder powered by a power source. The feeder is provided with a plurality of switching devices and a master electronic device which is in operative communication with the switching devices and has a ... | 07/06/2010 |
| 7701683 | Apparatus, system, and method for sharing output contacts across multiple relays A power system device-to-device direct communication system comprises a first intelligent electronic device with a processor and a transmit module. Software within the processor maintains a list of “virtual outputs,” which correspond to a number of data channels... | 04/20/2010 |
| 7576963 | Circuit protection system A protection system for a power distribution system with one or more zones that includes at least one power-switching device connected to a power or current sensing device and a communications device. The power-switching device is communicatively coupled to at least... | 08/18/2009 |
| 7570470 | Self-powered communications link for smart circuit breakers A circuit breaker communication system is provided including a circuit breaker, an electronic module to record and store data associated with the operation of the circuit breaker, and a portable communication unit for downloading the stored data. The portable commun... | 08/04/2009 |
| 7570471 | Circuit breaker trip unit with zone selective interlock and system monitoring A zone-selective-interlocking system for an electrical power distribution system that has at least one upstream breaker and at least one downstream breaker is provided. Each breaker in the power distribution system has a zone-selective-interlocking circuit that incl... | 08/04/2009 |
| 7561393 | Circuit protection system A method of protecting a circuit having power switching devices that includes communicating a current in at least one secondary switching device to at least one master switching device and determining a presence of a fault condition within at least a first zone base... | 07/14/2009 |
| 7463467 | Relay-to-relay direct communication system and method in an electric power system Provided is a system relay-to-relay direct communication system and method in a power system. The relay-to-relay direct communication system includes a first protective relay having a first transmit module where the first transmit module includes a first microcontro... | 12/09/2008 |
| 7436641 | Device and system for wireless communications with a circuit breaker A device and system for the wireless communication with a circuit breaker is provided which allows for obtaining data associated with a circuit breaker to quickly and easily access information associated with the trip event. The circuit breaker contains an electroni... | 10/14/2008 |
| 7373421 | Method and apparatus of preventing physical layer from establishing unsupported links Methods and apparatus for preventing unsupported links between a host device and a link partner over a network is disclosed. In one embodiment, a link control signal is employed to release the reset of the candidate PHY, place a candidate PHY of the host device in a... | 05/13/2008 |
| 7369921 | Power distribution expert system A power distribution expert system is provided to determine an optimal power distribution configuration, and also to determine an optimal transition path to reach said optimal configuration. An exemplary first set of rules is provided to determine an optimal power d... | 05/06/2008 |
| 7368830 | Polyphase power distribution and monitoring apparatus A polyphase power distribution and monitoring apparatus having sets of outputs for each phase of power and monitors for each phase of power disposed in the housing. Each monitor provides a visible display of current for an associated phase of power and an audible al... | 05/06/2008 |
| 7369389 | Electronic trip unit for circuit breakers 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 i... | 05/06/2008 |
| 7369904 | Integration method for automation components A method for integrating a number of automation components into an industrial controller with a uniform running level model of the runtime system. The basic clock of the running level model is devised from either an internal timer, an internal clock of a communicati... | 05/06/2008 |
| 7342474 | Circuit breaker configured to be remotely operated A circuit breaker configured to be remotely operated is disclosed. The circuit breaker includes a set of main contacts configured to connect between an electrical source and an electrical load, an operating mechanism in operable communication to open and close the m... | 03/11/2008 |
| 7340355 | Compensated current differential relaying method and system for protecting transformer Disclosed is a compensated current differential relaying method and system for protecting a transformer more correctly by calculating and estimating an exciting current including a core-loss current and a magnetizing current, and, in particular, to a compensated cur... | 03/04/2008 |
| 7330488 | System, method, and article of manufacture for synchronizing time of day clocks on first and second computers A system, method, and article of manufacture for synchronizing first and second time-of-day clocks on first and second computers, respectively, are provided. The first and second computers have first and second network interface cards with third and fourth clocks, r... | 02/12/2008 |
| 7327815 | Method for synchronizing several digital input signals The invention relates to a method for synchronizing a plurality of digital input signals which are formed by sampling with the aid of a dedicated operating clock in each case. In order to be able to carry out such a method reliably with a relatively low outla... | 02/05/2008 |
| 7327128 | Switching power supply transient suppression A number of output phases of a switching power supply are controlled, to regulate its output. An under-voltage condition is responded to, by overriding the control of the output phases, forcing some or all of the phases on, depending on a detected magnitude of a cha... | 02/05/2008 |
| 7324006 | Remote display ammeter for power plug or power strip A power strip is providing including a housing coupled to a first end portion of a power supply cord, the housing having an electrical receptacle mounted thereto and connected to the power supply cord, the power supply cord having a second end connectable to a power... | 01/29/2008 |
| 7324876 | System for remotely controlling energy distribution at local sites A power management system and associated method includes provision of local wireless energy control units at remote sites for controlling power delivery to customer loads, and a central station with a wireless transmitter for broadcasting commands to the wireless en... | 01/29/2008 |
| 7319922 | Protective device and method for installation of a protective function in a protective device A protective device for an electrical power distribution network has: means for processing measured values from measurement appliances for the power distribution network, means for initiating switching commands by means of primary appliances for the power distributi... | 01/15/2008 |
| 7319717 | Device and method for enabling communications signals using a medium voltage power line In one embodiment, a device for enabling communications signals over a medium voltage power line includes a first modem, a second modem, a third modem, and one or more switches. The first modem is electrically coupled to a medium voltage power line and is adapted to... | 01/15/2008 |
| 7312964 | Ground-fault monitor for multiple circuits A ground fault monitor for an electrical system having a plurality of branch circuits each having a respective ground conductor extending to a service panel that includes a ground connection to which the ground conductors are electrically connected. The ground fault... | 12/25/2007 |
| 7304403 | Power signaling based technique for detecting islanding conditions in electric power distribution systems A signaling system for detecting power line discontinuity in a power distribution system having a local power generator in a feeder line employs a signal generator that provides a local generator control signal with a preset protocol continuously and is located in t... | 12/04/2007 |
| 7301738 | Method and apparatus for minimally invasive network monitoring A method and apparatus for monitoring a communication network is provided. The network includes a plurality of node electronics units communicatively coupled to at least one central control processing unit through at least one network wherein each network includes a... | 11/27/2007 |
| 7301440 | Power line communication system and method The present invention provides a device for providing communications through power lines comprised of multiple conductors by transmitting the data signals through a plurality of the conductors. One embodiment of the present invention may be comprised of a transmit c... | 11/27/2007 |
| 7301739 | Ground-fault circuit-interrupter system for three-phase electrical power systems A ground-fault circuit-interrupter method and system for three-phase electrical power systems including a plurality of GFCI units and a processor forming a ground-fault circuit interrupting system for use in a three-phase power distribution network including a three... | 11/27/2007 |
| 7301742 | Method and apparatus for accessing and activating accessory functions of electronic circuit breakers 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 ac... | 11/27/2007 |
| 7295133 | Electrical circuit monitoring device The present invention is directed to a method of (1) providing continuous monitoring of various operating and environmental characteristics using RFID technology or similar wireless technology and (2) capturing data on historical events that have occurred on the cir... | 11/13/2007 |
| 7289920 | Method and apparatus for capture of grid characteristics corresponding to fluctuation events The techniques described herein allow a wind turbine generator system to automatically capture voltage waveform data corresponding to a voltage disturbance event. Data corresponding to a period preceding the voltage disturbance event, during the event and a period o... | 10/30/2007 |
| 7282893 | Method and apparatus for generator control A generator control circuit is provided that includes a first circuit (44) monitoring a generator voltage change rate and producing a first output when the voltage change rate is above a first level, a second circuit (48) monitoring a generator current... | 10/16/2007 |
| 7271660 | Selectively adding auxiliary frequency compensation depending on the behaviour of an output transistor of a rail-to-rail operational amplifier A frequency compensation device for providing added compensation to an operational amplifier, such as a bipolar or MOS rail-to-rail output operational amplifier, when the output device of the operational amplifier is in saturation. The device comprises a detector ci... | 09/18/2007 |
| 7268987 | Motor starter device A motor starter device having an elongated base provided with power poles acted upon by a contactor part and a protection part. The base houses power current lines 15 and their control mechanism 20. Two movable linkages (30, 40) are associated w... | 09/11/2007 |
| 7269753 | Mapping power system components Power system components are mapped using a controller and a data collection system. The controller is operable to transmit a first power system component ID for the first power system component to a second power system component, wherein the second power system comp... | 09/11/2007 |
| 7266426 | Autonomous control unit-based control system capable of active diagnostics A control system capable of detecting an anomaly in a controlled distribution network, and related method of detecting an anomaly, are disclosed. The control system includes a plurality of autonomous control units associated with elements of a distribution network, ... | 09/04/2007 |
| 7265957 | Restoring electrical load to distribution feeder circuits Automatically de-energizing and re-energizing a section of a distribution feeder circuit includes detecting, using a module of a protective device, whether a section of a distribution feeder circuit upstream of the protective device has been de-energized and whether... | 09/04/2007 |
