Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With coupling means
Patent
1974-11-14
1978-02-14
Rolinec, Rudolph V.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With coupling means
174143, 324127, 324133, G01R 120, G01R 1900
Patent
active
040741931
ABSTRACT:
A combined current and voltage measuring apparatus for measuring voltage and current on a rod-shaped primary conductor for conducting current at an upper potential includes a cast resin body wherein there is embedded the sensor of a current measuring unit. The case resin body is arranged in surrounding relation to the primary conductor and, in addition to carrying the sensor, it is also utilized as dielectric for the upper potential capacitor of a voltage divider which supplies the amplifier of a capacitive voltage measuring unit. Embedded in the cast resin body is a cylindrical electrode which forms with the rod-shaped primary conductor extending through the electrode the capacitor on the high-voltage side of the capacitive voltage divider. The sensor of the current measuring unit contains a winding without a ferrous core which surrounds the outside of the cylindrical electrode.
REFERENCES:
patent: 2724821 (1955-11-01), Schweitzer, Jr.
patent: 3372333 (1968-03-01), Esch
patent: 3396339 (1968-08-01), Miram
patent: 3524133 (1970-08-01), Arndt
patent: 3715742 (1973-02-01), Schweitzer, Jr.
patent: 3746935 (1973-07-01), Wagenaar et al.
Karlsen Ernest F.
Rolinec Rudolph V.
Siemens Aktiengesellschaft
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