System and method for detecting an earth ground fault of an external power supply connected to a vehicle

摘要

A system and method is provided for determining the existence of a ground fault connection within a vehicle. An electrical connector may be provided for electrically connecting the vehicle to an external Alternating Current (AC) power source. The electrical connector includes a three phase electrical connector configured to receive a corresponding input voltage signal on a phase, neutral, and earth connection. A controller being configured to determine whether a faulty earth connection exists between the vehicle and the AC power source the phase connection does not exceed the predetermined phase threshold when referenced to the earth connection and the neutral connection does not exceed the predetermined neutral threshold when referenced to the earth connection or the phase connection exceeds the predetermined phase threshold when referenced to the earth connection and the neutral connection exceeds the predetermined neutral threshold when referenced to the earth connection.