METHOD AND APPARATUS FOR DETECTING A FAULT IN A SUPPLY LINE

摘要

Apparatus and method for detecting a discontinuity or irregularity in a neutral return line of a supply line of an electrical power distribution network is disclosed. The electrical power distribution network includes the neutral return line, an active line and an earth return. The apparatus includes means for measuring a property associated with the supply line and means for comparing a result of the measuring with a reference to provide an indication of the discontinuity or irregularity. The property includes a complex impedance associated with the neutral return line and ambient electrical noise, and the property is different when the network includes the neutral return line compared to when the network does not include the neutral return line.