Armature connection resistance measuring method and apparatus

Details Armature connection resistance measuring method and apparatus Armature connection resistance measuring method and apparatus

1991-04-02

1992-08-18

Wieder, Kenneth A.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

324545, 324715, G01R 2714, G01R 2708

Patent

active

051402769

ABSTRACT:
A method and apparatus for testing the resistance of armature commutator connections and the resistance values of individual windings uses a pair of independent constant current sources connected across opposite pairs of armature windings through their respective commutator bars. The constant current sources are identical in output current and are connected in opposite polarity to minimize circulating current flowing in other windings of the armature. The voltages developed across windings adjacent the two current sources are combined and are a function of the resistances of the connections between the windings and the commutator bars. The voltages across each constant current source represent the resistance of the winding to which it is connected.

REFERENCES:
patent: 2890407 (1959-06-01), Huehn et al.
patent: 3590373 (1971-06-01), Lake
patent: 3746979 (1973-07-01), Kildishev et al.
patent: 3896376 (1975-07-01), Sinniger
patent: 4651086 (1987-03-01), Domenichini et al.

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