Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Plural inputs
Patent
1995-06-23
1997-03-25
Wieder, Kenneth A.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Plural inputs
318798, 318729, 318812, 318799, 324772, H02P 742, G01R 1900
Patent
active
056148178
ABSTRACT:
A method for determining the real power of an electrical drive, preferably an electrical fitting drive, includes subtracting an ohmic or resistive power loss in a stator of the drive from a measured real power. It is intended that an ohmic or resistive power loss in a connecting line of the drive also be subtracted. A device for determining the real power of an electrical drive includes line pairs each connecting two connecting lines remotely from the drive, to a DC voltage source. A known ohmic or non-reactive resistor is inserted into one of the lines in each case. Each of the lines is connected on the side of the ohmic or non-reactive resistor facing toward the drive, through a voltmeter, to the other line. The voltmeters are connected to an evaluation unit.
REFERENCES:
patent: 4355274 (1982-10-01), Borbeau
patent: 4602200 (1986-07-01), Walker
patent: 4823067 (1989-04-01), Weber
patent: 5428283 (1995-01-01), Kalman et al.
patent: 5471134 (1995-11-01), Oudillet et al.
patent: 5483111 (1996-01-01), Kuznetsov
Bowser Barry C.
Greenberg Laurence A.
Lerner Herbert L.
Siemens Aktiengesellschaft
Wieder Kenneth A.
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