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OwnerErickson Bruce Meyers, Bryan Douglas Holterinventors
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Apparatus is disclosed for detecting a discontinuity or irregularity in a neutral return line of an electrical power distribution network including the neutral return line, an active line and an earth return. The apparatus includes means for measuring a voltage change associated with a deliberate switching of a known impedance in the electrical network wherein the voltage change is due to a discontinuity or impedance irregularity in the neutral return line and means for implementing an algorithm for identifying the discontinuity or impedance irregularity in presence of allowable variations in nominal supply voltage to the electrical network including voltage changes resulting from network operations that mimic or hide a discontinuity or impedance irregularity in the neutral return line. The apparatus also includes means for comparing a result of the measuring with a reference to provide an indication of the discontinuity or impedance irregularity. A method for detecting a discontinuity or irregularity in a neutral return line of an electrical power distribution network is also disclosed.
Apparatus for detecting a discontinuity or irregularity in a neutral return line of an electrical power distribution network including said neutral return line, an active line and an earth return, said apparatus including:
A method for detecting a discontinuity or irregularity in a neutral return line of an electrical power distribution network including said neutral return line, an active line and an earth return, said method including:
A method according to claim wherein said algorithm is implemented to discriminate a network that includes said neutral return line from a network that does not include said neutral return line in presence of anomalies in said supply voltage.
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Dependencies are inferred from the claim text.