Method and apparatus for comparing load current in an electrical

Details Method and apparatus for comparing load current in an electrical Method and apparatus for comparing load current in an electrical

1995-06-07

1997-07-01

Snow, Walter E.

Electricity: measuring and testing

Electromechanical switching device

Circuit breaker

324132, 324140R, G01R 3102, G01R 31327

Patent

active

056442386

ABSTRACT:
A method and apparatus for measuring and recording peak RMS electrical current over multiple moving-average time periods provides current-flow information in the same units used to characterize electrical system distribution components--primarily overcurrent protective devices such as fuses and circuit breakers. Rather than reporting current-flow information based on a series of brief observations of a few line cycles or seconds, short duration RMS current-flow information in multiple geometrically increasing time intervals is calculated and accumulated to form longer duration RMS values of current. The resulting set of peak RMS current-flow values properly characterizes both the long and short term heating effects of the electrical current in the circuit under inspection, and is used in direct side-by-side comparisons with manufacturer provided data for specific distribution components in the evaluation of usage versus capacity and other functions relevant to distribution system design.

REFERENCES:
patent: 4035809 (1977-07-01), Jacobsen
patent: 4368519 (1983-01-01), Kennedy
patent: 4426651 (1984-01-01), Muellner et al.
patent: 4559496 (1985-12-01), Harnder, Jr. et al.
patent: 4581705 (1986-04-01), Gilker et al.
patent: 4620150 (1986-10-01), Germer et al.
patent: 4631625 (1986-12-01), Alexander et al.
patent: 4654588 (1987-03-01), Munday
patent: 5144226 (1992-09-01), Rapp
patent: 5164660 (1992-11-01), Carl, Jr.
patent: 5245496 (1993-09-01), Kim et al.

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