Electricity: measuring and testing – Testing and calibrating electric meters
Patent
1980-01-29
1981-06-02
Karlsen, Ernest F.
Electricity: measuring and testing
Testing and calibrating electric meters
G01R 1132
Patent
active
042713900
ABSTRACT:
A self-contained meter tester that provides the ability to test the efficiency of an electric watt-hour meter at the operational site by isolating the meter from the normally connected time-varying load, passing a known voltage through the meter to a calibrated constant load and measuring the known load with the meter to check its operational accuracy. In another aspect of the invention, the meter tester includes the ability to independently measure the constant load and for adjusting the same to a selected value.
REFERENCES:
patent: 1942258 (1934-01-01), Rutter et al.
Musson et al.; "Recent Developments . . . "; Proc. of the IEE; vol. 97; Part II; No. 56; Apr. 1950; pp. 97-107.
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