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

Claim 14:
15. A front-end circuit (FEC) for use in a three-phase power meter, the 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 of the three-phase power line, such that the three-phase power meter is configured to determine a power being transferred by a three-phase three-wire power line in a first mode of operation based on only 1) a first phase-to-phase voltage and 2) a second phase-to-phase voltage, and determine a power being transferred by a three-phase four-wire power line in a second mode of operation based on only 1) the first phase-to-phase voltage, 2) the second phase-to-phase voltage, and 3) a phase-to-neutral voltage.