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A facility for electrical contact resistance measurement

H. D. Maheshappa, J. Nagaraju, M. V. Krishnamurthy

Open publisher page 7 citations

Abstract

A test facility was developed for directly measuring the electrical contact resistance of switch gear contacts of real sizes under different environmental conditions and contact pressures. It can measure contact resistance to an order of one-tenth of a μΩ. It sources a constant current in the order of mA and hence avoids initial arcing across contacts. Experiments were conducted on brass–brass samples with different contact pressures and the results are in agreement with published theoretical calculations.

About this research paper

What this paper is about

A test facility was developed for directly measuring the electrical contact resistance of switch gear contacts of real sizes under different environmental conditions and contact pressures. It can measure contact resistance to an order of one-tenth of a μΩ. It sources a constant current in the order of mA and hence avoids initial arcing across contacts. Experiments were conducted on brass–brass samples with different contact pressures and the results are in agreement with published theoretical calculations.

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OpenAlex reports 7 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

A test facility was developed for directly measuring the electrical contact resistance of switch gear contacts of real sizes under different environmental conditions and contact pressures. It can measure contact resistance to an order of one-tenth of a μΩ. It sources a constant current in the order of mA and hence avoids initial arcing across contacts. Experiments were conducted on brass–brass samples with different contact pressures and the results are in agreement with published theoretical calculations.

Key concepts: Brass, Electrical contacts, Contact resistance, Electric arc, Materials science, Electrical resistance and conductance, Nuclear engineering, Metallurgy

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