Patent ID: 9482711
Filing Date: 2016-11-01
CPC Classification: G01R

Claim Text:
1. Apparatus for detecting faults in the delivery of electrical power to electrical loads, comprising: a plurality of load electrical connections arranged to deliver electrical power from an electrical power source to each of a plurality of electrical loads; a plurality of electrical switches each connected to an associated one of the load electrical connections; a diagnostic device, wherein the diagnostic device applies a test electrical signal to a first one of the load electrical connections in an operational mode of the apparatus when a first switch of the plurality switches is in an off state, the first switch connected to the first one of the load electrical connections; a control logic unit operable, when the first switch in an off state, to deliver a control signal which puts other switches in an off state; a detector connected to the load electrical connections and operable to detect, when the test electrical signal is applied to the first one of the load electrical connections, and the control signal has been applied to the other switches to put the other switches in the off state, whether, in response, an electrical output indicating a short circuit connection to the first load electrical connection is produced on any other of the load electrical connections connected to the other switches in the off state.