Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Eddy current rotor
Patent
1984-03-19
1985-10-15
Krawczewicz, Stanley T.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Eddy current rotor
G01R 1102
Patent
active
045477302
ABSTRACT:
A light load adjustment for an electric meter includes a frame attachable to a core of a voltage coil and a pole-shading element slideable with respect to the frame. The pole-shading element includes a windowed plate or a pair of tabs interposeable between the core of the voltage coil and the rotatable disk and effective to change the direction and magnitude of the torque applied to the rotatable disk of the electric meter at light load. A single adjusting screw for the light load adjustment is placed in one of its two alternative positions. In either of its two alternative positions, rotation of the head of the adjusting screw by a worker facing the head produces a displacement of the windowed plate or tabs which tends to change the disk speed in a sense which is consistent with the convention for the relationship between the direction of rotation of an adjustment and the change in disk speed.
REFERENCES:
patent: 2352965 (1944-07-01), Mendelsohn
patent: 3493862 (1970-02-01), Ramsey
patent: 3496466 (1970-02-01), Takabayashi
patent: 4423375 (1983-12-01), Ramsey
patent: 4424484 (1984-01-01), Ramsey
patent: 4424485 (1984-01-01), Zisa
Brunson Robert E.
General Electric Company
Krawczewicz Stanley T.
Solis Jose M.
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