Electronic three-phase four-wire system watt-hour meter

Details Electronic three-phase four-wire system watt-hour meter Electronic three-phase four-wire system watt-hour meter

1975-05-30

1978-05-30

Rolinec, Rudolph V.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Polyphase

324111, 324142, G01R 2106, G01R 1116

Patent

active

040925900

ABSTRACT:
An electronic three-phase four-wire system watt-hour meter equipped with a single operational circuit which multiplies the voltage and the current of each phase of a three-phase alternating current power source of which electric energy is to be measured. Electronic switches are provided which work on voltage and electronic switches are provided which work on current in each phase. Said electronic switches are cyclically opened and closed by three-phase pulse signals provided for control. The operational circuit produces, in the form of a current, an output corresponding to the sum of the electric power of each phase of said three-phase alternating current source.

REFERENCES:
patent: 2302474 (1942-11-01), Rich
patent: 2615063 (1952-10-01), Brown
patent: 2998569 (1961-08-01), Legatti et al.
patent: 3286178 (1966-11-01), Ultcht
patent: 3794917 (1974-02-01), Martin et al.

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