Arrangement for electrical measurement

Details Arrangement for electrical measurement Arrangement for electrical measurement

1990-11-27

1992-06-23

Wieder, Kenneth A.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Plural inputs

324 74, 324110, G01R 1900

Patent

active

051246244

ABSTRACT:
An arrangement for electrical measurement ascertains "subordinate" quantities, and is also "main" quantities with great accuracy and safety against falsification. An active energy to be measured is a main quantity, and a subordinate quantity is at least one of the following quantities: effective value of the voltage (u.sub.N) or of the current (i.sub.N), volt hours, volt square hours, ampere hours, ampere square hours, active power, reactive power, reactive energy, apparent output, apparent energy or power factor. The arrangement may comprise a voltage sensor (8), a voltage/current-converter (9), a multiplier (10), a current/voltage-converter (11), two analog/digital-converts (12 and 15), a signal/frequency-converter (13), a counter (14), an interface circuit (4), and an indicator (7), wherein the current/voltage-converter (11) consists of a constant current source (16) and a further multiplier (17).

REFERENCES:
patent: 4056774 (1977-11-01), Shum
patent: 4079313 (1978-03-01), Callan
patent: 4217634 (1980-08-01), Dalley
patent: 4420721 (1983-12-01), Dorey
patent: 4434400 (1984-02-01), Halder
patent: 4528458 (1985-07-01), Nelson
patent: 4615009 (1986-09-01), Battodetti et al.
patent: 4766370 (1988-08-01), Carr
patent: 4931725 (1990-06-01), Hutt
patent: 4937520 (1990-06-01), Arseneau et al.
Abstract of JP-A-57 63 461 Apr. 16, 1982, by Ikeda.

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