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:
Feb. 09, 2021
Filed:
Dec. 22, 2015
Volvo Truck Corporation, Gothenburg, SE;
Tomas Gustafsson, Mölndal, SE;
VOLVO TRUCK CORPORATION, Gothenburg, SE;
Abstract
A method for monitoring electrical insulation resistance in an electric system includes: supplying electric power from an external power supply via a first conductor and a second conductor; feeding the electric power to the electric system via a first current collector and a second current collector, each of which are configured to be electrically connected to the electric system via a first main contactor and a second main contactor, respectively; and monitoring the insulation resistance by means of an insulation resistance monitoring unit associated with a control unit and connected to each of the main contactors. The method further includes: maintaining the main contactors in a closed state when the current collectors are disconnected from the conductors, thereby allowing monitoring of the insulation resistance; opening the main contactors and subsequently connecting the current collectors to the conductors; and closing the main contactors thereby allowing monitoring of the insulation resistance. An arrangement for monitoring electrical insulation resistance in an electric system is also provided.