Rectangular shunt with measurement compensation system

Details Rectangular shunt with measurement compensation system Rectangular shunt with measurement compensation system

1987-03-18

1988-05-10

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With coupling means

338 49, H01C 700, G01R 1900, G01R 120

Patent

active

047438460

ABSTRACT:
In order to reduce errors between the measured current by a rectangular shunt and the shunt output signal voltage, such errors being due primarily to skin effect and the proximity of the shunt to the current circuit to be measured, the present invention proposes a shunt having a measuring system which compensates for these error causing effects. The shunt utilizes a measurement circuit following a path which reduces the difference between the potential produced across the shunt and the form of a current which passes therethrough. The path of the measuring circuits starts from the center of the resistive material of the shunt and progresses towards the outer surface of the resistive material in accordance with a function which is non-monotonic and which can even follow a curved path. More particularly, the shunt has a rectangular geometry to permit the maximum heat dissipation which is produced by the shunt in its continuous operating mode under ambient conditions.

REFERENCES:
patent: 846969 (1907-03-01), Wohl
Conference: IEEE 1980 Power Engg. Soc. Summer Mtg., Minneapolis, "Elimination of the Skin Effect Error in Heavy-Current Shunts", pp. 1-6.

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