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. 02, 2018
Filed:
Jul. 06, 2015
Fuji Electric Fa Components & Systems Co., Ltd., Tokyo, JP;
Satoshi Machida, Gunma, JP;
FUJI ELECTRIC FA COMPONENTS & SYSTEMS CO., LTD., Tokyo, JP;
Abstract
An insulation monitoring device that carries out insulation monitoring of a power system or load apparatus using, for example, an Igr method includes a table in which a monitoring setting value Irref greater than a resistance component error current flowing in accordance with the sum of the electrical capacitance of a capacitor configuring a noise filter on the input side of the load apparatus and the ground insulation capacitance of the power system is set in advance in accordance with an operating schedule of the load apparatus, a monitoring setting value computing unit that outputs the monitoring setting value Iread from the table in accordance with a current time according to a clock, and an insulation evaluation unit that detects an insulation failure caused by a decrease in ground insulation resistance when a resistance component current extracted by an Iextraction unit exceeds the monitoring setting value I.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile