Device for measuring ground connection resistance and onboard charger for a vehicle provided with such a device

摘要

A device for measuring resistance of a ground tap and a charger for an on-board vehicle including the device. The device includes a current source and an ammeter disposed on a first electrical branch, provided to link a phase of a power supply network with the ground of the installation; a second electrical branch provided to link a neutral wire of the power supply network with the ground of the installation, including a resistor across terminals of which is connected a voltmeter, and a first capacitor in series with the resistor; and a third electrical branch is provided for linking the neutral wire of the network with the ground of the installation, and including, on the third branch, in parallel with the first capacitor and with the first resistor, a second capacitor of higher value than the first capacitor.

主权项

1. A device for measuring a ground resistance of an apparatus comprising:
a current source and an ammeter arranged on a first electrical branch and configured to connect a phase of a power supply network with a ground of the apparatus; a second electrical branch configured to connect a neutral wire of the power supply network with the ground of the apparatus, the second electrical branch having a resistor having terminals at which a voltmeter is connected, and a first capacitor in series with the resistor; a third electrical branch configured to connect the neutral wire of the network with the ground of the apparatus, the third electrical branch having, in parallel with the first capacitor and the resistor, a second capacitor of higher value than the first capacitor.