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:
Jan. 06, 2015
Filed:
Sep. 16, 2011
Young-chul Kim, Seoul, KR;
Soon-suk Kim, Gangdong-gu, KR;
Young-Chul Kim, Seoul, KR;
Soon-Suk Kim, Gangdong-gu, KR;
Weal Electro Co., Ltd, Seoul, KR;
Abstract
A ground leakage current measurement apparatus in an ungrounded DC power system including positive and negative electric lines includes a switching unit configured to perform switching to supply measurement power to a positive side ground resistor and a negative side ground resistor by using power of the electric lines; a measurement unit connected between the switching unit and the ground and configured to measure at least one of positive and negative side ground leakage currents; and a control unit configured to control the switching unit to discriminate a positive side ground leakage current operation and a negative side ground leakage current operation of the measurement unit.