US Patent 7683642 Apparatus and method for metering contact integrity

An arrangement for use in connection with an electricity meter includes an electricity meter housing and at least one connection between a first conductor and a second conductor carrying line voltage. The arrangement further includes a processing circuit that is configured to obtain a first voltage measurement within the meter housing on a first side of the at least one connection, and to obtain a second voltage measurement on a second side of the at least one connection. The processing circuit is further configured to determine a value corresponding to an impedance across the at least one connection.