Patents by Inventor HARTMUT NIEMANN

HARTMUT NIEMANN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for measuring the current level of an alternating current
    Patent number: 8836319
    Abstract: A method for measuring a current level of an alternating current uses a current transformer having a measurement winding and a test winding. The resistance of the test winding is measured, the temperature of the test winding and therefore of the measurement winding is determined therefrom, and a value for a current level measured on the measurement winding is corrected using that temperature.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: September 16, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventor: Hartmut Niemann
  • METHOD FOR MEASURING THE CURRENT LEVEL OF AN ALTERNATING CURRENT
    Publication number: 20120105052
    Abstract: A method for measuring a current level of an alternating current uses a current transformer having a measurement winding and a test winding. The resistance of the test winding is measured, the temperature of the test winding and therefore of the measurement winding is determined therefrom, and a value for a current level measured on the measurement winding is corrected using that temperature.
    Type: Application
    Filed: October 29, 2010
    Publication date: May 3, 2012
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventor: HARTMUT NIEMANN