Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With coupling means
Patent
1989-12-21
1992-06-23
Karlsen, Ernest F.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With coupling means
174139, 324117R, G01R 120
Patent
active
051246422
ABSTRACT:
A power line post insulator has a housing that encloses two inductive sensors that transversely straddle a recess which receives the power conductor. Wires connect the sensors additively with respect to voltages induced by currents in the conductor between the sensors. The sensors may each include one or two additively connected coils.
REFERENCES:
patent: 3251014 (1966-05-01), Stein, Jr.
patent: 3386059 (1968-05-01), Stein, Jr. et al.
patent: 4717872 (1988-01-01), Wagner et al.
patent: 4839600 (1989-06-01), Kuustra
Karlsen Ernest F.
Sigma Instruments Inc.
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