Integrated corona fault detection

摘要

A power distribution cabinet (10) includes a housing having walls (12) that define an interior space for housing electric components. A capacitive sensor (24) is located on an interior surface of one or more of the walls (12). The capacitive sensor (24) includes a first conductive layer (28b) located proximate to the interior surface of the wall (12), a second conductive layer (28a) located distal from the interior surface of the wall (12), and a dielectric layer (30) located between the first and second conductive layers (28b,28a). First and second output terminals (32) are connected to the first and second conductive layers (28b,28a) of the capacitive sensor (24) to provide an output representative of displacement current within the power distribution cabinet (10).