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| Number | Title | Issue Date |
| 8154835 | Power and control unit for a low or medium voltage apparatus A power and control unit for low or medium voltage applications operatively coupable to a low or medium voltage apparatus and to a protection relay having a trip circuit supervision. The power and control unit for low or medium voltage applications according to the ... | 04/10/2012 |
| 8154836 | Line current differential protection upon loss of an external time reference A line current differential protection system that uses an external time reference continues providing protection to a power apparatus upon the loss of the external time reference. An external time reference synchronization mode and a channel based synchronization m... | 04/10/2012 |
| 8068320 | Network unit including network transformer and network protector A network unit includes an enclosure having first and second compartments, plural input terminals, and a primary switch having an input and an output, the input being electrically connected to the input terminals. The output of the primary switch is electrically con... | 11/29/2011 |
| 7986503 | Circuit protection system A circuit protection system is provided that utilizes a single state definition for each of the zones of protection of the circuit to increase computational efficiency. Multiple zone protective functions can be performed on a single zone of protection and can refere... | 07/26/2011 |
| 7751165 | Centrally controlled protection systems having reduced energy let-through mode A centrally controlled protection system is provided. The system includes a plurality of circuit breakers, a plurality of modules, and a central computer. Each of the plurality of breakers are in electrical communication with a respective one of the plurality of mod... | 07/06/2010 |
| 7710698 | Distance protection relay and method A protective relay for an electrical power distribution system and a method. The protective relay includes first and second current transformers arranged to sense a respective current flowing into a power line, and a voltage sensing device arranged to sense the volt... | 05/04/2010 |
| 7710697 | Hybrid system for electronically resetable circuit protection An electrical circuit protection system provides circuit protection in an electrical power distribution system. The electrical circuit protection system according to one embodiment comprises: an automatic reset circuit breaker; a commutation module electrically conn... | 05/04/2010 |
| 7667938 | Power node switching center A circuit fault detector and interrupter which consists of parallel current conduction paths, including a path through a mechanical contactor and a path through a power electronics switch. A fault can be detected by a fault detection circuit within 50 microseconds o... | 02/23/2010 |
| 7656629 | Safety switch for a safety circuit A safety switch for safety circuit arrangement has a control part for processing an input signal and at least one switching element with at least one active and one inactive switching state. The control part controls the switching element in order to generate an out... | 02/02/2010 |
| 7599161 | Relay device and corresponding 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 p... | 10/06/2009 |
| 7583487 | System and method for managing fault in a power system A power control system comprises a plurality of power control groups, with each group comprising a plurality of individual point-of-load regulators each adapted to provide respective regulated voltage outputs. The point-of-load regulators may be selected for inclusi... | 09/01/2009 |
| 7570469 | Dynamically configurable relay element and related methods A dynamically configurable relay element configured to protect an electrical system, including a dynamically calculated relay operating quantity, a dynamically calculated relay pickup setting, a dynamically calculated time dial, a plurality of dynamically calculated... | 08/04/2009 |
| 7561392 | Intrinsically safe data transmission device A process control system (1) comprises at least one process control computer (2) and field units (4) connected thereto via a bus system. An, in particular, intrinsically safe data transmission device (5) is connected between the process c... | 07/14/2009 |
| 7542256 | 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; assi... | 06/02/2009 |
| 7477500 | Method and system for signal and power distribution in a building housing a manufacturing process A power and signal distribution system is adaptable to existing building areas and provides a shielded, low resistance and low inductance grounding structure. The distribution system comprises two or more electrically conductive enclosed channels; one for lower curr... | 01/13/2009 |
| 7460346 | Arc fault detection and confirmation using voltage and current analysis An arc fault in an electrical circuit is detected by recording phase plane plot data of current versus voltage for at least one electrical cycle of an alternating current signal, and applying a phase plane plot arc fault monitoring algorithm to the phase plane plot ... | 12/02/2008 |
| 7460347 | Systems and methods for performing a redundancy check using intelligent electronic devices in an electric power system Provided is an intelligent electronic device-to-intelligent electronic device direct communication system in a power system, for performing a power system data redundancy check therebetween. The communication includes a first intelligent electronic device adapted fo... | 12/02/2008 |
| 7453677 | Power and safety control hub A power and safety control hub, integrating fault tolerant power disconnect control, software monitoring of disconnect and multi-voltage power distribution and disconnect with non-hazardous power control, EMI filtering and multi-circuit current protection in a singl... | 11/18/2008 |
| 7415072 | Drive control for an electric drive with a secure electrical separation of power element and control element The invention relates to a drive control for an electric drive with a secure electrical separation of power element and control element. The aim of the invention is to reduce the number of components such as optic couplers and buffer amplifiers between the power ele... | 08/19/2008 |
| 7394632 | Line interface module A power processing module for supplying power to a motion control device from a power source such as a utility power line, and related method of operation, are disclosed. The power processing module includes a first power input terminal, a first power output termina... | 07/01/2008 |
| 7375941 | Protective relay capable of protection applications without protection settings The current differential relay operates without adjustable settings, and includes a phase current differential element with a predetermined threshold, responsive to local phase current values and remote phase current values, to detect three-phase faults and producin... | 05/20/2008 |
| 7372808 | Redundant transmission of protection commands between remote tripping devices In a method and a device for redundant transmission of protection commands between remote tripping devices (1, 8), useful information which represents a protection command or a rest signal is transmitted by a first remote tripping device (1) in at leas... | 05/13/2008 |
| 7372682 | System and method for managing fault in a power system A power control system comprises a plurality of power control groups, with each group comprising a plurality of individual point-of-load regulators each adapted to provide respective regulated voltage outputs. The point-of-load regulators may be selected for inclusi... | 05/13/2008 |
| 7369380 | Highly available dual serial bus architecture In a highly available storage system, an enclosure includes first and second power supplies, and first and second controller boards. Each of the first and second controller boards includes first and second serial bus controllers. First and second serial buses are co... | 05/06/2008 |
| 7365451 | Power converter A power converter that can continue to operate after suffering a partial failure. The power converter includes multiple array transformers; normally-on switches connected respectively in series with the ends of each of the primary windings of the array transformers;... | 04/29/2008 |
| 7363520 | Techniques for providing power to a set of powerable devices An improved power supply subsystem, which is automatically updatable, includes a first power supply having a first power circuit, a first controller adapted to control operation of the first power circuit, a first interface adapted to connect the first controller to... | 04/22/2008 |
| 7358627 | Electronic control systems and methods An apparatus in an electronic control system allows two or three wire operation. A power supply can supply power to the enclosed circuitry in both two and three wire installations. Two separate zero cross detectors are used such that timing information can be collec... | 04/15/2008 |
| 7355859 | DC power port in a rack A direct current (DC) power port is included in a rack to provide DC power to electrical equipment external to the rack. ... | 04/08/2008 |
| 7352282 | Communication system A communication system includes a power line, a plurality of PLC networks connected to the power line in common, and an electronic control unit for controlling an electric equipment, connected to the power line between the PLC networks. The electronic control unit i... | 04/01/2008 |
| 7352549 | Method of automatically recognizing an electrical system The subject matter of the present invention is a method of automatically recognizing an electrical system by which both the voltage of an electrical system (2) and the phase angle between phases of the system are monitored so that human technical failure upon... | 04/01/2008 |
| 7352550 | Method of detecting run-dry conditions in fuel systems Systems, methods, and apparatus for fault detection and interruption in power lines are provided. Circuitry is implemented via software and hardware that is configured to sense an operational aspect of a power line, such as current levels in a three-phase power line... | 04/01/2008 |
| 7353407 | Methods and apparatus for provisioning phantom power to remote devices An apparatus provisions power from a power budget to remote devices configured to obtain phantom power. The apparatus includes, among other things, a controller which is configured to identify a power demand for a remote device (e.g., a power demand based on an actu... | 04/01/2008 |
| 7342758 | Method and system for detecting stand-alone operation of a distributed generating system A method and a system for detecting stand-alone operation of a distributed generating system having a generating source connected in shunt with an independent power distribution system via a first branch breaker are proposed. A voltage or a frequency signal on the i... | 03/11/2008 |
| 7339353 | Power system for managing power from multiple power sources A power source system including a power distribution apparatus has an energy management system for managing the provision of power from multiple power sources to multiple electrical devices. The power distribution apparatus may have a combination of primary and seco... | 03/04/2008 |
| 7336461 | Method for determining the moment of closure of a circuit breaker on a high voltage line A method for determining the reclose time of a circuit breaker on a three-phase high-voltage electric network after separation of contacts 7A, 8A, 7B, 8B, 7C, 8C in the presence of a fault on one of the three phases A, B or ... | 02/26/2008 |
| 7337081 | Metering device with control functionality and method thereof A metering device of a power substation and method are provided for operating on a secondary analog waveform output by a transformer assembly receiving a primary waveform. The method includes stepping down the secondary waveform and generating a corresponding output... | 02/26/2008 |
| 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 |
| 7315234 | Load control apparatus and load control system A load control apparatus is connected to a master station through a power line supplied with direct-current power. The load control apparatus is driven by the direct-current power supplied from the power line to communicate with the master station through the power ... | 01/01/2008 |
| 7312539 | Output suppressing method of a plurality of dispersed power sources and dispersed power source managing system Regarding output suppression control of a plurality of dispersed power sources linked to a high-voltage-to-low-voltage transformer of a commercial power system, the partiality of the output suppression of a plurality of dispersed power sources is eliminated and, cos... | 12/25/2007 |
| 7309993 | Three- or four-pole low-voltage power switch with Rogowski coils operating as current sensors A three or four pole low-voltage power switch is disclosed wherein the switch is partly provided with a device for detecting ground faults. For this purpose, the current vectorial sum must be produced in the three or four conductors of a monitored network. For the s... | 12/18/2007 |
