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. 29, 2013
Filed:
Nov. 18, 2010
Hirotoshi Watanabe, Tsu, JP;
Tatsuya Mukai, Tsu, JP;
Shiro Mori, Tsu, JP;
Naoki Fukuo, Tsu, JP;
Kiyosi Gotou, Amagasaki, JP;
Kouji Kakiuchi, Tsu, JP;
Shinichi Nakamura, Tsu, JP;
Hirotoshi Watanabe, Tsu, JP;
Tatsuya Mukai, Tsu, JP;
Shiro Mori, Tsu, JP;
Naoki Fukuo, Tsu, JP;
Kiyosi Gotou, Amagasaki, JP;
Kouji Kakiuchi, Tsu, JP;
Shinichi Nakamura, Tsu, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A branch wire Lfrom the voltage detection circuitis inserted in the zero-phase-sequence current transformer ZCT in the direction from the load side to the external power supply side. For this configuration, the zero-phase-sequence current transformer ZCT is to detect unbalance of the sum of current flowing in the first and second conductive wires L, Land the current flowing in the branch wire L. Therefore, the present invention can accurately detect occurrence of electrical leakage.