Power factor meter

Details Power factor meter Power factor meter

1979-01-15

1981-06-09

Tokar, Michael J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Phase comparison

324 83D, G01R 2500

Patent

active

042727235

ABSTRACT:
An improved solid state power factor monitoring device is disclosed. The device is isolated from the operator and requires no grounding lead or other direct connection to ground for monitoring power factor in high voltage alternating current carrying power lines. A zero crossing switch is used in combination with sensors and amplifiers to actuate a counter to determine the phase relation between current and voltage in the conductor as a representation of power factor.

REFERENCES:
patent: 2249166 (1941-07-01), Parker et al.
patent: 3514695 (1970-05-01), Skarshaug
patent: 3588710 (1971-06-01), Masters
patent: 3701013 (1972-10-01), Gilmore
patent: 3873919 (1975-03-01), Vosteen
patent: 3874616 (1975-04-01), Buser

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