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.
A METHOD AND SYSTEM FOR MONITORING ELECTRICAL INSULATION RESISTANCE IN AN ELECTRIC SYSTEM
2019-01-03
Patent
Electronic Resource
English
Method and system for monitoring electrical insulation resistance in an electric system
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