| Patents for H02H 1 - Details of emergency protective circuit arrangements (5,580) |
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| 11/03/2009 | CA2452378C System for estimating the frequency of the power signal on a power transmission line |
| 10/29/2009 | WO2009130210A1 Arc detector and associated method for detecting undesired arcs |
| 10/29/2009 | CA2721906A1 Arc detector and associated method for detecting undesired arcs |
| 10/28/2009 | EP2112735A1 Arc detector and associated method for detecting undesired arcs |
| 10/28/2009 | CN101568983A Improved coupler |
| 10/28/2009 | CN101568400A Wide range static neutralizer and method |
| 10/27/2009 | US7609493 ESD protection circuit and method for lowering capacitance of the ESD protection circuit |
| 10/27/2009 | CA2303603C Voltage sensing arrangement |
| 10/27/2009 | CA2278379C Apparatus sensitive to arc amplitude for envelope detection of low current arcs |
| 10/22/2009 | DE102008019673A1 Schutzanordnung zum Schutz sicherheitsrelevanter Elektronikschaltungen vor Fehlfunktionen Protection order to protect security-sensitive electronic circuits against malfunctions |
| 10/21/2009 | CN101562328A Residual current circuit breaker |
| 10/20/2009 | US7606018 Surge absorbing circuit |
| 10/20/2009 | US7606017 Protection device: surge suppressing conductor |
| 10/15/2009 | WO2009126669A2 Quarter wave stub surge suppressor with coupled pins |
| 10/15/2009 | US20090257166 Transient Voltage Protection Device, Material, and Manufacturing Methods |
| 10/14/2009 | EP2109202A2 Multifunctional residential circuit breaker |
| 10/14/2009 | CN101556301A 多功能住宅电路断路器 Multifunctional residential circuit breaker |
| 10/14/2009 | CN100550554C Three or four pole low-voltage power switch provided with rogowski coils |
| 10/07/2009 | CN100547414C Apparatus and method employing an optical fiber for closed-loop feedback detection of arcing faults |
| 10/06/2009 | US7599164 Lightning protection system for aircraft composite structure |
| 10/06/2009 | US7599160 Electrostatic discharge protection circuits |
| 10/06/2009 | US7598748 Inverter system |
| 10/01/2009 | WO2009120324A2 Arc fault root-cause finder system and method |
| 10/01/2009 | WO2009118048A1 Phasor estimation during current transformer saturation |
| 10/01/2009 | US20090244800 Surge protection apparatus and methods |
| 10/01/2009 | CA2719418A1 Arc fault root-cause finder system and method |
| 09/30/2009 | CN101547563A Closed loop backdrilling system |
| 09/30/2009 | CN101547562A Closed loop backdrilling system |
| 09/30/2009 | CN101547561A Closed loop backdrilling system |
| 09/30/2009 | CN100546141C A self-supplied electronic protection device for automatic circuit-breakers |
| 09/30/2009 | CN100546140C High impedance fault detection |
| 09/24/2009 | US20090237855 Devices and System for Electrostatic Discharge Suppression |
| 09/23/2009 | EP2102668A2 Electrically insulated current measuring device, electronic trigger, and circuit breaker comprising such a device |
| 09/23/2009 | CN100544148C Aircraft applicable circuit imbalance detection and circuit interrupter |
| 09/22/2009 | US7593209 MOV failure mode identification |
| 09/22/2009 | US7593206 Lightening conductor |
| 09/22/2009 | US7593204 On-chip ESD protection circuit for radio frequency (RF) integrated circuits |
| 09/22/2009 | US7592820 Isolated measurement circuit for sensor resistance |
| 09/16/2009 | CN101536281A A relay-to-relay direct communication system and method in a electric power system |
| 09/16/2009 | CN100541954C Electronic protection devices for automatic circuit-breakers |
| 09/16/2009 | CN100541953C Circuit-breaker and its protector |
| 09/16/2009 | CN100541948C Spark gap comprising an optically triggered power semiconductor component |
| 09/15/2009 | US7589944 Electrostatic discharge protection structures for high speed technologies with mixed and ultra-low voltage supplies |
| 09/11/2009 | WO2009110786A1 Detecting an interference level in an electrical mains supply distribution network |
| 09/10/2009 | US20090225488 PON Transceiver with a Surge Protection Circuit |
| 09/09/2009 | EP2099110A1 Method for testing an arc fault detector |
| 09/09/2009 | EP0917753B1 A device for supervising in a high voltage converter station |
| 09/09/2009 | CN100539343C Electronic trip unit with user-adjustable sensitivity to current spikes |
| 09/08/2009 | US7586729 Surge arrester having a discharge element |
| 09/03/2009 | WO2009106425A1 Monitoring device |
| 09/03/2009 | WO2008155065A3 Device for the operation of electronic circuits on a high-voltage potential |
| 09/02/2009 | EP2096731A2 Opening-and-closing member control device |
| 09/02/2009 | EP1464102B1 High speed transfer system |
| 09/02/2009 | EP1384300B1 Monitoring apparatus |
| 09/02/2009 | EP1205015B1 Cvt transient filter |
| 09/02/2009 | EP1105955B1 Circuit for detecting an inadmissibly high current in an output stage |
| 09/02/2009 | CN101523678A Voltage measurements of electrically conducting elements in systems for controlling electrical processes |
| 09/01/2009 | US7583489 Tungsten shorting stub and method of manufacture |
| 09/01/2009 | US7583485 Electrostatic discharge protection circuit for integrated circuits |
| 08/27/2009 | WO2009104971A1 Electronic dc circuit breaker |
| 08/26/2009 | CN101514791A Lightning protective street lamp structure |
| 08/26/2009 | CN100533902C A method and an apparatus for supervising the operation of current transformers |
| 08/26/2009 | CN100533897C Apparatus for high surge voltage protection |
| 08/26/2009 | CN100533605C Assembly with super-high-temperature releasing mechanism and pressure-sensitive resistor |
| 08/26/2009 | CN100533161C Method and apparatus for identifying intermittent earth fault |
| 08/25/2009 | US7579963 Electronic protection devices for circuit-breakers and corresponding programming method |
| 08/25/2009 | CA2482797C Protective relay with synchronized phasor measurement capability for use in electric power systems |
| 08/20/2009 | US20090207535 Arc fault detector |
| 08/19/2009 | CN101512861A Method and differential protection device for generating fault signal for displaying fault of current transformer secondary circuit |
| 08/18/2009 | US7576966 Method and system for electrical bonding of fuel tank penetrations |
| 08/18/2009 | US7576964 Overvoltage protection circuit of output MOS transistor |
| 08/18/2009 | US7576960 Circuit protection device with automatic monitoring of operation fault |
| 08/12/2009 | EP1695248A4 High level arc fault detector |
| 08/12/2009 | EP1281225B1 Method and system for providing voltage support to a load connected to a utility power network |
| 08/12/2009 | CN100526888C Differential current measuring apparatus, tripping device and switchgear |
| 08/05/2009 | EP2084548A1 Flashover analysis tool |
| 08/05/2009 | EP2084547A1 Method and device for detection of a loose connection |
| 08/04/2009 | US7570474 System, apparatus and method for automatically facilitating the discharge of static electricity from an apparatus |
| 08/04/2009 | US7570473 Surge absorber |
| 08/04/2009 | US7570470 Self-powered communications link for smart circuit breakers |
| 07/30/2009 | WO2009094151A1 Method and apparatus for testing afci device for series arc detection |
| 07/30/2009 | CA2712919A1 Method and apparatus for testing afci device for series arc detection |
| 07/29/2009 | EP2082466A2 Systems and methods for arc fault detection |
| 07/29/2009 | CN101496248A Devices, systems, and methods for adaptive RF sensing in arc fault detection |
| 07/29/2009 | CN100521432C Grounding leakage circuit breaker |
| 07/28/2009 | US7567423 Pressure assisted wafer holding apparatus and control method |
| 07/28/2009 | US7567417 Automatically quenching surge arrester arrangement and use of such a surge arrester arrangement |
| 07/23/2009 | WO2009090143A1 Electronic protection unit for automatic circuit breakers and relative process |
| 07/23/2009 | WO2009089995A1 Residual current device |
| 07/23/2009 | WO2009089994A1 Arc protection module |
| 07/23/2009 | US20090185322 Combination current sensor and relay |
| 07/23/2009 | US20090185321 Device and method for the extended protection of electric lines |
| 07/23/2009 | US20090184748 Voltage regulator |
| 07/22/2009 | EP2080207A1 Improved coupler |
| 07/22/2009 | EP1212821B1 Residual current device sensitive to universal-current |
| 07/22/2009 | CN100517895C Electrostatic discharge circuit and method therefor |
| 07/21/2009 | US7564669 Protective device |
| 07/21/2009 | US7564664 ESD protection circuit for a high frequency circuit |
| 07/21/2009 | US7564663 Active limiter with integrated sensor |
| 07/16/2009 | US20090180233 Detector for precursive detection of electrical arc |