Distributed current and voltage sampling function for an electri

Details Distributed current and voltage sampling function for an electri Distributed current and voltage sampling function for an electri

1994-08-26

1996-03-12

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Plural inputs

327 91, 361 93, 364483, G01R 2106, G11C 2702, H02H 318

Patent

active

054989566

ABSTRACT:
A low voltage AC electric power monitoring system includes a processor which samples the current and circuit breaker system includes a processor which samples each of the current components at seventeen samples per cycle to obtain current samples representing a single period of the AC power signal. The processor samples the voltage component at different points in the voltage cycle over several cycles to obtain voltage samples representing a single period of the AC power signal.

REFERENCES:
patent: 4470092 (1984-09-01), Lombardi
patent: 4689172 (1987-08-01), Demeyer
patent: 4710845 (1987-12-01), Demeyer
patent: 4811154 (1989-03-01), Trenkler et al.
patent: 4870351 (1989-09-01), Milkovic
patent: 4996646 (1991-02-01), Farrington
patent: 5031178 (1991-07-01), Hartman
patent: 5289115 (1994-02-01), Germer et al.
Siemens Bulletin SG3169-1; "Microprocessor-Based Tripping System Static Trip III"; Siemens Energy & Automation, Inc., Raleigh, N.C. 27626; 1993.

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