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:
Feb. 14, 1978
Filed:
Nov. 14, 1974
Werner Kohler, Bentfeld, Holstein, DT;
Siemens Aktiengesellschaft, Munich, DT;
Abstract
A combined current and voltage measuring apparatus for measuring voltage and current on a rod-shaped primary conductor for conducting current at an upper potential includes a cast resin body wherein there is embedded the sensor of a current measuring unit. The case resin body is arranged in surrounding relation to the primary conductor and, in addition to carrying the sensor, it is also utilized as dielectric for the upper potential capacitor of a voltage divider which supplies the amplifier of a capacitive voltage measuring unit. Embedded in the cast resin body is a cylindrical electrode which forms with the rod-shaped primary conductor extending through the electrode the capacitor on the high-voltage side of the capacitive voltage divider. The sensor of the current measuring unit contains a winding without a ferrous core which surrounds the outside of the cylindrical electrode.