| Patents for G01R 15 - Details of measuring arrangements of the types provided for in groups , or (13,411) |
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| 12/30/1998 | EP0887648A2 Discriminating circuit for differentiating between high voltage DC and high voltage AC |
| 12/23/1998 | WO1998058285A1 Integrated optical waveguide system |
| 12/23/1998 | WO1998058268A1 Fiber optic interferometric sensor |
| 12/23/1998 | EP0886147A1 Device for obtaining a current-proportional magnetic induction at the position of a magnetic field sensor |
| 12/23/1998 | EP0866975A4 Electro-optic voltage sensor |
| 12/22/1998 | US5852395 Rogovski coil |
| 12/22/1998 | US5851842 Measurement system and measurement method |
| 12/16/1998 | EP0883815A1 Apparatus for measuring a.c. current in a cable |
| 12/16/1998 | CN1202249A Concatenated magneto-optic field sensors |
| 12/15/1998 | US5850140 Electric field sensor having sensor head with unbalanced electric field shield to shield branched optical waveguides against an applied electric field |
| 12/10/1998 | WO1998040753A3 High voltage installation with a device for transmitting signals |
| 12/09/1998 | EP0882989A1 Electro-optical sensing device with a voltage divider unit |
| 12/09/1998 | CN2300108Y Multi-unit combined Hall zero-detection heavy current measuring apparatus |
| 12/08/1998 | US5847570 Low jitter trigger circuit for electro-optic probing apparatus |
| 12/08/1998 | US5847560 Process and device for measuring an alternating electric current with temperature compensation |
| 12/06/1998 | CA2239077A1 Electro-optical sensor with grounded voltage divider |
| 12/02/1998 | EP0804739B1 Electricity measurement apparatus and method |
| 12/02/1998 | CN1200810A Voltmeter suitable for medium/high-voltage installations, with a surface wave device |
| 12/01/1998 | US5844410 Device for optically measuring physical quantity in power equipment and method of manufacturing the same |
| 12/01/1998 | US5844409 Method and system for measuring an electric current with two light signals propagating in opposite directions, using the Faraday effect |
| 11/25/1998 | EP0786091B1 Process and device for measuring an alternating electric quantity with temperature compensation |
| 11/25/1998 | CN1199861A Capacitive transformer in metal all-closed gas insulating high voltage system |
| 11/24/1998 | US5841272 Frequency-insensitive current sensor |
| 11/24/1998 | US5841031 Method and apparatus for evaluation and inspection of composite-repaired structures |
| 11/24/1998 | CA2052599C System for linearizing a non-linear sensor output |
| 11/19/1998 | WO1998052055A1 Generator and method for measuring the voltage of same |
| 11/19/1998 | WO1998052054A1 Current transformer for alternating current measurements in the low voltage range |
| 11/19/1998 | WO1998052053A1 Voltage detector for measurement and protection purposes for use in medium-voltage switch gear |
| 11/19/1998 | WO1998052052A2 Magnet core |
| 11/19/1998 | DE19739815C1 Magnetic field sensor with core made of weakly magnetic material |
| 11/19/1998 | DE19719970A1 Generator und Verfahren zur Messung einer Generatorspannung Generator and method for measuring a generator voltage |
| 11/19/1998 | DE19719521A1 Spannungssensor für Meß- und Schutzwerke für Mittelspannungsschaltanlagen Voltage sensor for measuring and protection works for medium voltage switchgear |
| 11/18/1998 | EP0878087A2 Non-invasive powerline communications system |
| 11/18/1998 | EP0783700B1 Device for measuring an electric current |
| 11/17/1998 | CA2124484C Electrostatic voltmeter |
| 11/11/1998 | EP0679128B1 An apparatus forming a junction box comprising a shunt busbar disposed therein |
| 11/11/1998 | CN2297004Y Power device for multimeter |
| 11/11/1998 | CN1198532A 220 KV active optical fibre voltage transformer |
| 11/10/1998 | US5835257 Magneto-optical element and optical magnetic field sensor using the same |
| 11/10/1998 | US5834973 Voltage isolation circuit for a measurement channel |
| 11/10/1998 | US5834939 Hand-held ignition voltage tester |
| 11/10/1998 | US5834935 Electronic instrument |
| 11/10/1998 | US5834934 Inductive current sensor with reduced influence of spurious gaps and electrical apparatus including it |
| 11/10/1998 | US5834933 Method for magnetooptic current measurement and magnetooptic current-measuring device |
| 11/10/1998 | US5834931 RF current sensor |
| 11/04/1998 | EP0875765A1 Voltage isolation circuit for a measurement channel |
| 11/04/1998 | EP0875052A1 Modular core, self-powered powerline sensor |
| 11/04/1998 | EP0874998A1 Optical measuring method and device for measuring a magnetic alternating field with an expanded measuring range and good linearity |
| 11/03/1998 | US5831485 In a low cost digital signal measuring apparatus |
| 11/03/1998 | US5831426 Magnetic current sensor |
| 11/03/1998 | US5831425 Bus bar structure for electrical junction box |
| 11/03/1998 | US5831259 Electrooptical transducer utilizing photoluminescent conjugate oligomers |
| 10/29/1998 | WO1998048525A2 An arrangement in a subscriber line interface circuit |
| 10/29/1998 | WO1998048287A1 Device with wide pass band for measuring electric current intensity in a conductor |
| 10/29/1998 | CA2288907A1 An arrangement in a subscriber line interface circuit |
| 10/28/1998 | EP0874244A2 Procedure and apparatus for measuring electric currents in conductors |
| 10/28/1998 | CN2296065Y Outdoor dry high voltage current and voltage mutual inductor |
| 10/21/1998 | CN1196487A Improved coil for AC current sensor |
| 10/20/1998 | US5825175 Of an electrical measuring device |
| 10/15/1998 | WO1998045867A2 Unit for switching electrical energy |
| 10/15/1998 | WO1998045861A1 Subassembly for switching electric energy |
| 10/07/1998 | EP0869369A2 Capacitive voltage transducer for a metal-encapsulated gas-insulated high voltage installation |
| 10/07/1998 | EP0868666A1 Current sensing device |
| 10/07/1998 | EP0868644A1 Multi-dimensional capacitive transducer |
| 10/06/1998 | US5818706 High-voltage generator with shielded measuring resistors |
| 10/06/1998 | US5818247 Method and apparatus for testing internal circuit |
| 10/06/1998 | US5818243 Meter for measuring a current |
| 10/06/1998 | US5818216 For detecting a current flow through an electric conductor |
| 10/01/1998 | DE19712078A1 Circuit for selecting measuring range, e.g. for digital multimeter |
| 09/30/1998 | EP0867743A2 Optical fiber modulator having an optical fiber having poled portion serving as an electrooptic element and method for making same |
| 09/30/1998 | EP0867725A1 Current sensor |
| 09/30/1998 | EP0866975A1 Electro-optic voltage sensor |
| 09/30/1998 | EP0866974A2 Optical measuring process and optical measuring arrangement for measuring an alternating quantity with intensity scaling |
| 09/29/1998 | US5815391 Current sensing circuit for pulse width modulated motor drive |
| 09/29/1998 | US5814983 Method for sensing DC current and sensor for carrying out same |
| 09/24/1998 | DE19716477A1 Verfahren und Einrichtung zur Messung einer elektrischen Spannung Method and device for measuring an electric voltage |
| 09/24/1998 | DE19711990A1 Hochspannungsanlage mit einer Vorrichtung zur Übertragung von Signalen High-voltage system having a device for transmitting signals |
| 09/24/1998 | DE19710742A1 Summation current transformer arrangement e.g. for fault-current and difference current circuit-breakers |
| 09/23/1998 | EP0866509A2 Hand held instrument with safety locked battery compartment |
| 09/23/1998 | EP0866338A1 Coil for an AC current sensor |
| 09/23/1998 | EP0865610A2 Optical measurement method and optical measurement device for measuring an alternating magnetic field with intensity normalization |
| 09/22/1998 | US5811965 DC and AC current sensor having a minor-loop operated current transformer |
| 09/22/1998 | US5811964 Method and device for measuring an electrical alternating quanity with temperature compensation |
| 09/17/1998 | WO1998040754A1 Mounting structure of electric parts on circuit board |
| 09/17/1998 | WO1998040753A2 High voltage installation with a device for transmitting signals |
| 09/16/1998 | EP0864098A2 Process and device for measuring a quantity, in particular an electric current, with a high measurement resolution |
| 09/16/1998 | CN1193386A Shunt assembly for current measurement |
| 09/15/1998 | US5808415 Apparatus for sensing RF current delivered to a plasma with two inductive loops |
| 09/11/1998 | WO1998039662A1 Method and device for measuring an electrical voltage |
| 09/09/1998 | EP0862744A1 Concatenated magneto-optic field sensors |
| 09/09/1998 | EP0791178B1 Current transducers |
| 09/03/1998 | WO1998038517A1 Circuit to measure electrical measurement variables by means of light signals of differing wavelengths |
| 09/03/1998 | WO1998020658A3 Non-invasive powerline communications system |
| 09/02/1998 | EP0861442A2 Current measurement in turbogenerators |
| 08/27/1998 | DE19807913A1 Test probe for measuring instrument |
| 08/27/1998 | DE19807912A1 Rotary-type switch and test meter |
| 08/27/1998 | DE19705767A1 Stromsensor nach dem Kompensationsprinzip Current sensor according to the compensation principle |
| 08/26/1998 | EP0860050A1 Frequency-independent voltage divider |
| 08/26/1998 | EP0859961A1 Current sensor assemblies |
| 08/26/1998 | EP0748300B1 Holder for annealing fiber optic coils |