| Patents for G01R 21 - Arrangements for measuring electric power or power factor (6,609) |
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| 10/16/2008 | US20080255782 Devices, Systems, and Methods for Monitoring Energy Systems |
| 10/15/2008 | EP1980862A2 Electronic electricity meter |
| 10/15/2008 | CN201134767Y Portable apparatus capable of displaying power supply efficiency of solar cell |
| 10/14/2008 | US7437333 Method and system for providing an energy cost estimation for a water distribution network |
| 10/14/2008 | CA2336015C Residual current detection device |
| 10/09/2008 | WO2008120282A1 Ac electric quantity measuring device |
| 10/09/2008 | WO2008081047A3 Poly-phase electric energy meter |
| 10/08/2008 | EP1299922B1 Successive log video pad power detector and method |
| 10/08/2008 | CN101282040A Method for real time sorting non-intrusion type electric load |
| 10/08/2008 | CN101281221A High-power microwave water load |
| 10/07/2008 | US7434113 Method of analyzing serial data streams |
| 10/02/2008 | WO2007106795A3 Method and apparatus for changing power class for a powered device |
| 10/02/2008 | US20080243404 Averaging in an Intelligent Electronic Device |
| 10/01/2008 | CN101275977A Power estimation for a semiconductor device |
| 10/01/2008 | CN101275976A Hot-wire anemometer calibration apparatus and method in acoustic field |
| 09/30/2008 | US7430545 Power supply/demand control system |
| 09/30/2008 | US7430512 Method and system for selling lighting solutions |
| 09/25/2008 | WO2008016577A3 System and method for locating and analyzing arcing phenomena |
| 09/25/2008 | US20080234955 Uniform Power Density Across Processor Cores at Burn-In |
| 09/25/2008 | US20080234954 Digital power monitoring circuit and system |
| 09/24/2008 | CN201122171Y Power factor interface monitoring instrument |
| 09/24/2008 | CN101271132A Independent bound attrition pricing method |
| 09/18/2008 | US20080224892 System and method for monitoring and estimating energy resource consumption |
| 09/18/2008 | CA2679471A1 System and method for graphically displaying energy consumption and savings |
| 09/17/2008 | CN201118243Y Low-voltage reactive-load automatic compensation cabinet integrated measuring and controlling device |
| 09/17/2008 | CN101267707A Multipoint voltage and current probe system |
| 09/17/2008 | CN100419436C Four-quadrant power measurement |
| 09/10/2008 | CN101261291A Wattless service pricing method based on fees susceptance |
| 09/09/2008 | US7424377 Power reduction method in an electronic counter |
| 09/04/2008 | US20080215263 Methods, systems, circuits and computer program products for electrical service demand management |
| 09/04/2008 | US20080215262 Polyphase electric energy meter |
| 09/04/2008 | DE19735022B4 Verfahren zur Ermittlung der Wirkleistung von Asynchron-Elektromotoren Method for determining the active power of asynchronous electric motors |
| 09/03/2008 | CN101256210A Three-phase electric energy meter based on NIOS II microprocessor |
| 09/03/2008 | CN101256209A Three-phase electrical energy computation chip based on NIOS II microprocessor |
| 09/02/2008 | US7421348 Predictive emissions monitoring method |
| 08/27/2008 | CN101252281A Method and system for testing electric voltage reactive-load integrated control functions |
| 08/27/2008 | CN100414470C Stationary reactive compensator monitoring system up position machine software layout method and graphic interface structure |
| 08/26/2008 | US7417558 Wireless communications system incorporating intelligent electronic devices |
| 08/26/2008 | US7417420 Switch to bypass optical diode for reducing power consumption of electrical meters |
| 08/26/2008 | US7417419 Method and arrangement for connecting electrical components in an electricity meter |
| 08/21/2008 | US20080198037 Method for Transmission of Data for Controlling an HVDC Transmission Installation |
| 08/20/2008 | CN101248359A 损耗功率的测量 Loss of power measurement |
| 08/19/2008 | US7415370 Method of compressing values of a monitored electrical power signal |
| 08/14/2008 | WO2008095277A1 Hybrid renewable power monitor and data logger |
| 08/14/2008 | US20080195794 Memory management for an intelligent electronic device |
| 08/14/2008 | US20080195562 Automated meter reading system |
| 08/14/2008 | US20080195561 Systems and methods for providing renewable power systems by aggregate cost and usage |
| 08/13/2008 | EP1956380A1 Method and related device for estimating two currents flowing simultaneously through respective windings of a poly-phase electrical load driven in SVM mode |
| 08/13/2008 | EP1285280B1 Solid-state single-phase meter and methods and apparatus for programming such meter |
| 08/13/2008 | CN101241376A Intelligent switch power source power detection and control device |
| 08/13/2008 | CA2574780A1 Optical assemblage for detecting and reading the current in indoor and outdoor low, medium and high voltage systems |
| 08/12/2008 | US7412304 Power system for area containing a set of power consumers |
| 08/07/2008 | WO2007127978A3 Lighting performance power monitoring system |
| 08/07/2008 | US20080186013 Poly-Phase Electric Energy Meter |
| 08/06/2008 | CN201096835Y Power measuring device for three-phase power meter |
| 08/06/2008 | CN201096812Y Intelligent load device for automatic test |
| 08/06/2008 | CN101238624A System and method for centralized monitoring of distributed power transformer |
| 08/05/2008 | US7409304 Method of calculating effective power relating to capacitor, method of measuring effective power consumed by capacitor, capacitor selection method, calculation apparatus for calculating effective power relating to capacitor, and recording medium storing the calculation program therefor |
| 07/31/2008 | US20080183407 System and method for testing power intensify of rfid tags |
| 07/31/2008 | US20080183317 Building management system |
| 07/31/2008 | US20080180274 Method and apparatus for collecting and displaying consumption data a from a meter reading system |
| 07/30/2008 | CN101231312A Apparatus and method for improving the accuracy of instrument transformers |
| 07/24/2008 | US20080177488 Method and apparatus for analyzing power consumption |
| 07/24/2008 | US20080177487 Estimating static power consumption of integrated circuits using logic gate templates |
| 07/23/2008 | EP1947464A1 Power detector insensitive to standing waves of a microwave signal transmitted by a mismatched waveguide |
| 07/23/2008 | CN101226411A Power consumption measuring and control method for sound system switch power source as well as special device thereof |
| 07/23/2008 | CN101226214A Natural poikilothermia intelligent positioning system for foundation microwave radiometer |
| 07/17/2008 | WO2007106162A3 Energy budget manager |
| 07/17/2008 | WO2007098322A3 Apparatus and methods of using card based programmable controllers |
| 07/17/2008 | US20080172192 Intelligent Electronic Device with Board-Range High Accuracy |
| 07/17/2008 | US20080172191 Method and system for managing energy in sensor network environment using spanning tree |
| 07/16/2008 | CN101221199A Equipotential high-tension electric energy measuring apparatus of authigenic power supply |
| 07/16/2008 | CN100403036C Electric power measuring method and its measuring device |
| 07/10/2008 | WO2008081047A2 Poly-phase electric energy meter |
| 07/10/2008 | WO2008081046A2 Polyphase electric energy meter |
| 07/10/2008 | WO2008059528A3 A prepaid smart card operated electronic energy meter with online load optimizer for solar power application |
| 07/10/2008 | WO2008052223A3 Apparatus and method for mapping a wired network |
| 07/10/2008 | DE102007001221A1 Multiphase electrical energy meter has microcontroller with input piece that contains separate input channels for current input signals with high resolution analog digital converter |
| 07/09/2008 | CN101216510A High voltage electric energy direct metered system and method |
| 07/08/2008 | US7398168 Method and system for monitoring power flow through an electric power transmission line |
| 07/03/2008 | WO2008078108A2 Magnetic field indicator and utility meter incorporating the same |
| 07/02/2008 | CN101210941A Large power converter subsequent lockout overcurrent, subsequent power loss and overcurrent test method |
| 07/02/2008 | CN100399035C Apparatus and method for measuring power consmption |
| 06/26/2008 | WO2008052162A3 Electrical power system control communications network |
| 06/26/2008 | WO2008036303A3 Wide-area protection and control using power system data having an associated time component |
| 06/26/2008 | US20080154801 System and Method for Creating a Geothermal Roadway Utility with Alternative Energy Pumping Billing System |
| 06/26/2008 | US20080154523 Intelligent Electronic Device Having Network Access |
| 06/25/2008 | EP1936391A1 Apparatus and method for improving the accuracy of instrument transformers |
| 06/25/2008 | CN201078821Y Power outlet |
| 06/25/2008 | CN101206234A Device and method for measuring photo-electric electric power |
| 06/25/2008 | CN101206233A Electric plating power meter |
| 06/24/2008 | US7392143 Monitoring and fault diagnosis of single-and multi-converter power systems |
| 06/19/2008 | DE102006058925A1 Vorrichtung zur Bestimmung und/oder Überwachung einer Prozessgröße Apparatus for determining and / or monitoring a process variable |
| 06/18/2008 | EP1931690A2 System and method for array and string level monitoring of a grid-connected photovoltaic power system |
| 06/18/2008 | CN101203934A System and method for analyzing power flow in semiconductor plasma generation systems |
| 06/18/2008 | CN100395940C Field bus based electric energy computing system |
| 06/17/2008 | US7389189 System and method for a self-healing grid using demand side management techniques and energy storage |
| 06/12/2008 | US20080140326 Estimation of real-time power system quantities using time-synchronized measurements |
| 06/12/2008 | US20080140263 Method for predicting a power curve for a wind turbine |
| 06/11/2008 | CN101196542A Method for testing actual operating power of computer |