Electronic measuring device for a polyphase network, in particul

Details Electronic measuring device for a polyphase network, in particul Electronic measuring device for a polyphase network, in particul

1981-02-11

1983-10-11

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Polyphase

324127, 324142, G01R 1900, G01R 120

Patent

active

044095457

ABSTRACT:
A device for measuring a quantity such as the electric power in a polyphase alternating current network including at least two phase conductors and a reference conductor, of the type comprising two measuring devices which are associated respectively with the two phases and the outputs from which are connected to a summation device.
A supply circuit connected to one of the phases is associated with the corresponding measuring device, and a device connected to the other phase ensures the supply to the other measuring device and to the summation device, the supply circuit and the supply device being connected through a high-impedance tie circuit, the summation device being supplied if at least one of the phases is under voltage with respect to the reference conductor.

REFERENCES:
patent: 4158810 (1979-06-01), Leskovar

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