Patent ID: 11940476
Assignee: ANALOG DEVICES INTERNATIONAL UNLIMITED COMPANY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A three-phase power meter, comprising:
a front-end circuit (FEC) configured for coupling to a three wire or a four wire three-phase power line comprising a plurality of conductors, and to generate a plurality of signals indicative of voltages between respective pairs of conductors; and
a processing unit, coupled to the FEC, and configured to receive the plurality of signals, and to determine power being transferred by the three-phase power line,
wherein the power meter is configured to operate in a first mode of operation, in order to determine the power being transferred by a three wire three-phase power line, and in a second mode of operation, in order to determine the power being transferred by a four wire three-phase power line, and
wherein the FEC is configured to determine the power being transferred in the first mode of operation based on only a first phase-to-phase voltage and a second phase-to-phase voltage, and
wherein the FEC is configured to determine the power being transferred in the second mode of operation based on only the first phase-to-phase voltage, the second phase-to-phase voltage, and a phase-to-neutral voltage.