Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With coupling means
Patent
1987-06-11
1988-12-13
Smith, Jerry
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With coupling means
324117R, 324117H, G01R 104
Patent
active
047913614
ABSTRACT:
A magnetic flux concentrator comprising spaced pole pieces (4,6) and magnetic shunt (8) bridging the pole pieces within an insulating housing (2) which also contains a magnetoresistive transducer (24) and electronic circuitry (26) for sensing magnetic field intensity between the pole pieces and relating that intensity as electric signals provided at wiring terminals (28) at the exterior of the housing. The pole pieces have magnetic terminal portions adjacent openings in the housing for removable attachment thereto of selected ferrous strap configurations (42,50,52,60) determined by the cross-sectional shape of the electrical conductor (46) in which current flow is to be measured, the respective strap configuration and flux concentrator forming a magnetic loop around the conductor for picking up the magnetic flux induced by current flow in the conductor.
REFERENCES:
patent: 3405355 (1968-10-01), Hebbert
patent: 3693085 (1972-09-01), Beard
patent: 4414543 (1983-11-01), Schweitzer, Jr.
Baran Michael S.
Beihoff Bruce C.
Hastings Jerome K.
Juds Mark A.
Baker Stephen M.
Eaton Corporation
Smith Jerry
Vande Zande L. G.
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