The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 12, 1999
Filed:
Oct. 20, 1997
Reinhard Maier, Herzogenaurach, DE;
Wolf-Eckhart Bulst, Munchen, DE;
Thomas Ostertag, Ulm, DE;
Oliver Sczesny, Aschheim, DE;
Wolfgang Schelter, Uttenreuth, DE;
Leonhard Reindl, Stephanskirchen, DE;
Werner Ruile, Munchen, DE;
Gerd Scholl, Munchen, DE;
Jurgen Michel, Munchen, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A radio-interrogated, surface-wave technology current transformer for high/medium-voltage systems includes a magnetosensitive element connected to a surface-wave structure of a surface-wave configuration as a termination of the surface-wave structure. A response signal of the surface-wave configuration is information regarding current strength/direction and phase of the current instantaneously flowing through the system, which is evaluated by a ground station. By virtue of the radio transmission, there is no electrical insulation problem, and the use of a radio-interrogated surface-wave configuration makes that part of the overall current transducer which is at high potential into a passive element of the same.