| Patents for G01R 15 - Details of measuring arrangements of the types provided for in groups , or (13,411) |
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| 06/10/1999 | WO1999028756A1 Method of measuring current while applying a voltage and apparatus therefor |
| 06/10/1999 | DE19755887A1 Voltage transformer especially for gas-insulated medium voltage switch and control-gear |
| 06/09/1999 | EP0921404A2 High frequency characteristics measurement method for dielectric materials and high frequency circuit design method |
| 06/02/1999 | EP0919790A2 Optical sensor apparatus and signal processing circuit used therein |
| 06/02/1999 | EP0748452B1 Method of manufacturing a faraday-effect sensing coil with stable birefringence |
| 05/27/1999 | WO1998005975A8 Method and arrangement for optically detecting an electrical variable |
| 05/27/1999 | DE19853513A1 Combined multimeter and pyrometer for measuring temperature of a surface, current, voltage, resistance and capacitance |
| 05/27/1999 | DE19749986A1 Metal-encapsulated, gas-insulated HV switchgear apparatus |
| 05/26/1999 | EP0918224A2 Signal processing circuit for electro-optic probe |
| 05/26/1999 | CN2321104Y Current transformer avoiding or indicating fraudulent use of electricity |
| 05/26/1999 | CN1217472A Electric field sensor |
| 05/25/1999 | US5907426 Stabilizing device for optical modulator |
| 05/19/1999 | EP0916098A1 Fiber optics apparatus and method for accurate current sensing |
| 05/19/1999 | EP0916095A1 Method and arrangement for optically detecting an electrical variable |
| 05/19/1999 | CN2319815Y Double incident light path back type optical current sensor head |
| 05/14/1999 | WO1999023497A1 Improvements relating to current indicators |
| 05/14/1999 | WO1998052052A3 Magnet core |
| 05/14/1999 | CA2309064A1 Improvements relating to current indicators |
| 05/14/1999 | CA2216201A1 A load and supply status indicator |
| 05/12/1999 | EP0915345A2 Electrical apparatus, in particular a surge arrester, provided with fault current display |
| 05/12/1999 | CN2318638Y AC current converter |
| 05/11/1999 | US5903696 Multimode optical waveguides, waveguide components and sensors |
| 05/06/1999 | WO1999022204A1 Brillouin/erbium fibre laser current monitor using elliptically polarizing fibre |
| 05/06/1999 | EP0913695A2 Multimeter with current sensor |
| 05/06/1999 | EP0912902A1 Method, device and sensor for capacitive detecting of field and voltage and use thereof |
| 05/06/1999 | DE19747416A1 Method of optical detection of narrow band monofrequent electric measurement parameter |
| 05/06/1999 | DE19747391A1 Method of controlling electricity meter |
| 05/05/1999 | CN1215839A Multimeter with current sensor |
| 04/29/1999 | WO1999021279A1 Circuit for regulating the current supplied to an electromechanical component in a motor vehicle |
| 04/28/1999 | EP0911636A2 Electro-optic sampling apparatus |
| 04/28/1999 | EP0910801A1 Process for standardising the intensity of optical sensors used for measuring periodically oscillating electric or magnetic field intensities |
| 04/28/1999 | EP0910798A1 Fiber optic current sensor with bend birefringence compensation |
| 04/28/1999 | EP0811170B1 Process and device for measuring a magnetic field by faraday effect while compensating for intensity variations |
| 04/28/1999 | CN1215473A Measuring device for measuring electric currents in a force-loaded current conductor |
| 04/27/1999 | US5898890 Method for transferring data between devices by generating a strobe pulse and clamping a clock line |
| 04/27/1999 | CA2148961C Linear alternating current interface for electronic meters |
| 04/20/1999 | US5896257 Two sensor for over-current protection and current sensing configuration motor control |
| 04/20/1999 | US5896035 Electric field measuring apparatus |
| 04/20/1999 | US5896028 Non-contact type sensor driven from a single power supply for allowing a compact configuration and reduced power consumption |
| 04/20/1999 | US5896027 Current ratio device for use in forming a current transformer |
| 04/20/1999 | US5895912 Method and device for measuring an alternating electric quantity with temperature compensation by fitting |
| 04/14/1999 | EP0786092B1 Optical measuring process and device for measuring an electric a.c. voltage or an electric alternating field with temperature compensation |
| 04/13/1999 | US5894224 Method of testing a connection which includes a conductor in an integrated circuit |
| 04/08/1999 | WO1999017129A1 Fiber optics apparatus and method for accurate current sensing |
| 04/08/1999 | WO1999006844A3 Magnetic current sensing and short circuit detection in plate structure |
| 04/08/1999 | WO1999002997A3 Dc and ac current sensor with discontinuous sampling |
| 04/07/1999 | EP0907084A2 Optical fibre voltage sensor for overhead high-voltage installations |
| 04/06/1999 | US5892430 Self-powered powerline sensor |
| 04/01/1999 | WO1999015907A1 Current measuring element with a hall sensor |
| 04/01/1999 | WO1999015906A1 Combined current/voltage transformer for low level signals |
| 04/01/1999 | DE19741417A1 Strommessgerät mit Hallsensor Flow meter with Hall sensor |
| 03/31/1999 | EP0905522A2 Device for measuring a measurement value from a predetermined measuring range |
| 03/31/1999 | EP0904550A1 Temperature calibration process for an optical magnetic field measurement device and measurement device calibrated by this process |
| 03/31/1999 | CN1212520A Method and apparatus for producing temperature stable frequency at reduced cost |
| 03/30/1999 | US5890096 Unconventional measurement transformer |
| 03/25/1999 | WO1999014772A1 Transformer system provided with a decoupling system |
| 03/25/1999 | WO1999014605A1 A current monitor system and a method for manufacturing it |
| 03/25/1999 | WO1999014604A1 Voltage divider |
| 03/24/1999 | EP0903585A2 Input ranging circuit for an electronic instrument |
| 03/24/1999 | EP0845107B1 Measurement system for electric disturbances in a high-voltage switchboard plant |
| 03/23/1999 | US5886510 Circuit for diagnosing the state of an electrical load |
| 03/18/1999 | DE19740664A1 Transformer arrangement with isolating device |
| 03/18/1999 | DE19740428A1 Current transformer toroidal coil with circular winding cross-section |
| 03/16/1999 | US5883508 Voltage transformer with voltage divider for measuring voltage in medium high and high voltage installations |
| 03/11/1999 | DE19736602A1 Current transducer unit |
| 03/10/1999 | EP0901231A2 Method and apparatus for producing a temperature stable frequency at reduced cost |
| 03/10/1999 | CN1210644A Non-invasive powerline communications system |
| 03/10/1999 | CN1210605A Modular core, self-powered powerline sensor |
| 03/09/1999 | US5880827 Measurement System with large dynamic range |
| 03/04/1999 | WO1999010750A1 Self powered current sensor |
| 03/03/1999 | CN1209541A Portable meter with safety inter-locked battery box |
| 02/25/1999 | WO1999009566A1 Magnetic flux concentration device |
| 02/24/1999 | EP0897542A1 Current sensor, in particular for low currents |
| 02/23/1999 | US5874848 Electric current sensor utilizing a compensating trace configuration |
| 02/18/1999 | WO1999008120A1 Method for measuring a magnetic field and device for carrying out said method |
| 02/16/1999 | US5872876 Optical fibre sensor element |
| 02/16/1999 | CA2138822C Dc current sensor |
| 02/11/1999 | WO1999006844A2 Magnetic current sensing and short circuit detection in plate structure |
| 02/11/1999 | DE19729453A1 Isolating amplifier for measuring electrical values |
| 02/09/1999 | US5869751 Multi-dimensional capacitive transducer |
| 02/04/1999 | WO1999005690A1 Current transformer for three-phase systems |
| 02/03/1999 | CN2306512Y Static single-phase electric energy meter |
| 02/03/1999 | CN1206834A Current measuring element capable of automatic zero-setting |
| 01/28/1999 | WO1999003709A1 Current measurement module for an internal combustion engine starter device |
| 01/28/1999 | WO1998048525A3 An arrangement in a subscriber line interface circuit |
| 01/28/1999 | DE19731170A1 Stromwandler für Drehstromsysteme Current transformers for AC systems |
| 01/27/1999 | EP0893696A2 Arrangement for measuring an AC current |
| 01/27/1999 | EP0815454B1 Voltage transformer |
| 01/26/1999 | CA2111617C Current sensor for medical devices including connector cables |
| 01/21/1999 | WO1999002997A2 Dc and ac current sensor with discontinuous sampling |
| 01/21/1999 | WO1998045867A3 Unit for switching electrical energy |
| 01/20/1999 | EP0891557A1 Measuring device for measuring electric currents in a force-loaded current conductor |
| 01/20/1999 | EP0811168B1 Voltage transformer with increased electric strength |
| 01/19/1999 | CA2094014C Arc detection system |
| 01/14/1999 | WO1999001773A1 Electric current pick-up shoe |
| 01/13/1999 | CN2304126Y Micro-power sampling digital power-transmission device |
| 01/12/1999 | US5859529 Voltage transformer with increased electric strength |
| 01/07/1999 | EP0889490A2 Current transformer for a metal-encapsulated gas-insulated high voltage installation |
| 01/07/1999 | DE19723130A1 Leakage current display arrangement for electrical conductors in house |
| 01/06/1999 | CN2303369Y Assembling type low voltage current transformer |