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:
Oct. 14, 2014
Filed:
May. 18, 2010
Takafumi Ishii, Tokyo, JP;
Masanobu Yoshidomi, Nagoya, JP;
Takafumi Ishii, Tokyo, JP;
Masanobu Yoshidomi, Nagoya, JP;
JX Nippon Oil & Energy Corporation, Tokyo, JP;
Yoshidomi Electric, Aichi, JP;
Nippon Yusen Kabushiki Kaisha, Tokyo, JP;
Monohakobi Technology Institute, Tokyo, JP;
Abstract
An object is to detect an insulation failure of a DC circuit with high sensitivity and in safety by means of a simple detection circuit. An insulation resistance measurement device of this invention is a device for measuring an insulation resistance to ground of a DC source circuit and is provided with connection terminals for connections to a positive electrode and a negative electrode of a series power supply, switch elements connected between the connection terminals and the ground potential and configured to switch connections between the connection terminals and the ground potential, resistive elements connected through the switch elements between the connection terminals respectively, and the ground potential, and a voltage detection unit for detecting voltage drops in the resistive elements.