| Patents for G01R 15 - Details of measuring arrangements of the types provided for in groups , or (13,411) |
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| 03/26/1998 | DE19638645A1 Nach dem Prinzip des Pockels-Effekt arbeitende optische Meßvorrichtung für elektrische Feldstärke-/Spannungsmessung mit minimaler Temperaturabhängigkeit According to the principle of the Pockels effect operating optical measuring device for electric field strength / voltage measurement with minimal temperature dependence |
| 03/26/1998 | CA2266596A1 Sensor to measure electrical current intensity and/or voltage |
| 03/25/1998 | EP0831333A1 Device for generating a polygonal light beam of a given polarization |
| 03/25/1998 | EP0830658A1 Self-excited microelectromechanical device |
| 03/25/1998 | CN2277075Y Liquid crystal digital a.c. voltage and current meter |
| 03/24/1998 | US5732167 Optical fiber sensor for measuring a magnetic field or electric current and method for making the same |
| 03/24/1998 | US5731579 Electro-optical voltage sensor head |
| 03/24/1998 | US5729888 Method of making an integrated electrical system |
| 03/18/1998 | EP0829730A1 A circuit for diagnosing the state of an electric load |
| 03/18/1998 | EP0829013A1 Fibre optic transducer |
| 03/18/1998 | CN2276637Y Speratated tong multipurpose meter |
| 03/18/1998 | CN1176392A Ribbon electricity tester |
| 03/17/1998 | US5729477 Method and apparatus for eliminating a disturbing component from a periodic signal, and application to an electronic capacitor voltage transformer |
| 03/17/1998 | US5729211 Assembly for transferring data |
| 03/17/1998 | US5729125 Bridged clamping mechanism for use with circuit condition monitoring devices |
| 03/17/1998 | US5729005 Fiber optic current sensor with bend birefringence compensation |
| 03/12/1998 | DE19640829A1 Circuit arrangement with isolating amplifier and measurement sensor |
| 03/11/1998 | CN1176003A Process and device for measuring magnetic field by Faraday effect while compensating for intensity variations |
| 03/11/1998 | CN1175693A Optic current transformer |
| 03/10/1998 | US5726575 Path for acquiring a voltage pulse, and a method and a system for measuring partial discharges and provided with such a path |
| 03/05/1998 | WO1998009376A1 Frequency-independent voltage divider |
| 03/04/1998 | EP0826971A2 Optical current transformer |
| 03/04/1998 | EP0826970A2 Voltage transducer |
| 03/04/1998 | EP0756710B1 Device for displaying the voltage of a conductor of a high-voltage power supply system |
| 02/26/1998 | WO1998008105A1 Fiber optics apparatus and method for accurate current sensing |
| 02/25/1998 | EP0825449A1 Current measuring method and device |
| 02/25/1998 | EP0825448A2 Measuring device for a metal-encapsulated gas-insulated high voltage installation |
| 02/25/1998 | EP0825447A2 Measuring device for a metal-encapsulated gas-insulated high voltage installation |
| 02/25/1998 | EP0824703A1 Radio-interrogatable current transformer using surface wave technology for high-voltage installations |
| 02/25/1998 | CN1174608A Voltage transformer with increased electric strength |
| 02/25/1998 | CN1174325A Light measuring device and manufacture process thereof |
| 02/19/1998 | WO1998007165A2 Magnetic current sensor |
| 02/19/1998 | DE19632524A1 Threading tool for long flexible sensors used for measuring conductor current |
| 02/19/1998 | CA2261312A1 Magnetic current sensor |
| 02/18/1998 | CN2274777Y Portable universal instrument |
| 02/12/1998 | WO1998005975A1 Method and arrangement for optically detecting an electrical variable |
| 02/12/1998 | WO1998005974A1 Method, device and sensor for capacitive detecting of field and voltage and use thereof |
| 02/12/1998 | CA2261901A1 Method and arrangement for optically detecting an electrical variable |
| 02/12/1998 | CA2261191A1 Method, device and sensor for capacitive detecting of field and voltage and use thereof |
| 02/11/1998 | EP0823638A2 Optical current measurement |
| 02/10/1998 | US5717327 Current sensor |
| 02/10/1998 | US5717326 Current measuring apparatus for measuring current in a wire |
| 02/05/1998 | DE19630989A1 Optical differential protection arrangement e.g. for HV power distribution equipment |
| 02/04/1998 | CN2273866Y Inductance type current sensor |
| 02/04/1998 | CN1172259A Voltage analyzer and determination method using the same |
| 02/03/1998 | US5715058 Method and device for the optical determination of a physical quantity |
| 02/03/1998 | US5714889 Method and device for indicating the direction of rotation of a three-phase system |
| 02/03/1998 | US5714879 Method of and arrangement for regulation of sensitivity in evaluation circuit |
| 01/22/1998 | WO1998002754A1 Fiber optic current sensor with bend birefringence compensation |
| 01/22/1998 | CA2258602A1 Fiber optic current sensor with bend birefringence compensation |
| 01/21/1998 | CN1171157A Current transducers |
| 01/20/1998 | US5710512 Structure and production process for secondary voltage detector for engine |
| 01/15/1998 | WO1998001763A1 Process for standardising the intensity of optical sensors used for measuring periodically oscillating electric or magnetic field intensities |
| 01/15/1998 | CA2260055A1 Process for standardising the intensity of optical sensors used for measuring periodically oscillating electric or magnetic field intensities |
| 01/13/1998 | US5708407 For measuring the current flowing through an electric conductor |
| 01/08/1998 | DE19624922A1 Optical measuring process for measuring alternating quantity |
| 01/07/1998 | EP0815456A1 Electrical current sensor |
| 01/07/1998 | EP0815455A1 Active optical current measuring system |
| 01/07/1998 | EP0815454A1 Voltage transformer |
| 01/07/1998 | CN1036945C Microwave probe-needle for coplanar integrated cricuit chip |
| 12/30/1997 | US5703928 Method of sensing a signal in a pair of wires |
| 12/30/1997 | US5703491 Voltage detection apparatus |
| 12/30/1997 | US5703481 Apparatus for detecting digital carrier signals on telephone cables |
| 12/24/1997 | WO1997048987A1 Temperature calibration process for an optical magnetic field measurement device and measurement device calibrated by this process |
| 12/24/1997 | CA2258231A1 Temperature calibration process for an optical magnetic field measurement device and measurement device calibrated by this process |
| 12/23/1997 | US5701073 Direct current measuring apparatus and method employing flux diversion |
| 12/17/1997 | EP0740796B1 Current sensor including magnetic sensors |
| 12/16/1997 | US5699461 Optical fiber sensors and method for making the same |
| 12/16/1997 | US5698984 Adaptive digital filter for improved measurement accuracy in an electronic instrument |
| 12/16/1997 | US5698831 Integrated electrical system |
| 12/11/1997 | WO1997046891A1 Method of testing a connection which includes a conductor in an integrated circuit |
| 12/10/1997 | EP0811170A1 Process and device for measuring a magnetic field by faraday effect while compensating for intensity variations |
| 12/10/1997 | EP0811168A1 Voltage transformer with increased electric strength |
| 12/10/1997 | CN2270234Y Digital multimenter with reading reporting function by voice |
| 12/10/1997 | CN2270233Y Multifunctional practical multimeter |
| 12/09/1997 | US5696858 Fiber Optics apparatus and method for accurate current sensing |
| 12/09/1997 | US5696491 Self-excited microelectromechanical device |
| 12/09/1997 | US5696441 Linear alternating current interface for electronic meters |
| 12/04/1997 | DE19722471A1 Wide bandwidth current and impedance meter |
| 12/03/1997 | EP0810442A1 Magneto optical current sensor |
| 12/03/1997 | EP0721670B1 Current sensor comprising a magnetoresistive strip and method of production |
| 12/03/1997 | EP0721590B1 Method and device for measuring an electric current using two oppositely directed light signals and making use of the faraday effect |
| 12/03/1997 | CN2269594Y High voltage nuclear phase stick |
| 11/26/1997 | EP0809115A2 Voltage measuring instrument and voltage measuring method using the same |
| 11/26/1997 | EP0808460A1 Current-detection coil for a current transformer |
| 11/26/1997 | CN2268981Y Current transformer |
| 11/26/1997 | CN1165954A 电流传感器 Current Sensors |
| 11/25/1997 | US5691837 Garnet |
| 11/20/1997 | DE19644483C1 High voltage insulator for high voltage lines |
| 11/19/1997 | CN1165560A Device for sensing of electric discharges in a test object |
| 11/13/1997 | WO1997042510A1 Current sensor, in particular for low currents |
| 11/13/1997 | DE19648199A1 Detecting cooking point of cooking position with conducting track temp. sensor |
| 11/13/1997 | DE19648196A1 Detecting cooking point of cooking position with conducting track temp. sensor |
| 11/13/1997 | DE19647987A1 Detecting cooking point of cooking position with conducting track temp. sensor |
| 11/13/1997 | DE19647985A1 Detecting cooking point of cooking position with conducting track temp. sensor |
| 11/13/1997 | DE19643698A1 Detecting cooking point of cooking position with conducting track temp. sensor |
| 11/12/1997 | EP0806675A1 Electrooptical current sensor with an optical fibre |
| 11/12/1997 | EP0806674A2 Current compensated current sensor |
| 11/12/1997 | CN2267464Y Current sensing device used for current measuring sampling |
| 11/12/1997 | CN2267463Y Portable type balls interval arrangement for measuring properties of high voltage electricity |