Back to results
US 5,124,642 AGranted
Power line post insulator with dual inductor current sensor
AssigneeSigma Instruments, Inc.
InventorThomas I. Marx
Life of this patent
Estimating the term…
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.
Claims14
A line post insulator for a power conductor, comprising:
- a line post insulator housing for insulating a conductor, said housing having a substantially hollow interior and being closed from above;
- said insulator housing forming an elongated recess insulated from the hollow interior for receiving a power conductor;
- a pair of inductive means inside the hollow interior for responding to currents and mounted on opposite sides of the insulated elongate recess of said line post housing in positions to have voltages induced therein by a conductor in the recess;
- and
- conductive means for connecting said inductive means additively relative to voltages induced by currents in a conductor in the recess.
2 more elements
A line post insulator for a power conductor, comprising:
- a line post housing for insulating a conductor, said housing having a substantially hollow interior and being closed from above;
- said insulator housing forming an elongated recess insulated from the hollow interior for receiving a power conductor and substantially fixing the power conductor and the insulator housing relative to each other;
- sensing means in the interior of said housing for sensing currents in a conductor located in the recess through the insulator housing;
- said sensing means including a pair of inductive means inside the hollow interior for responding to currents and mounted on opposite sides of the insulated elongate recess in positions to have the voltages induced therein by a conductor in the recess;
- and
- conductive means for connecting said inductive means additively relative to the voltage induced by currents in a conductor in the recess.
3 more elements
Dependencies are inferred from the claim text.