'K, tan δ' OF ELECTRO-PORCELAIN DISCS UNDER HIGH VOLTAGE STRESSES.

N NARAYAN

Abstract


Accurate measurements have been carried out of permittivity, tan , versus frequency,field strength and temperature on four types of porcelain. The temperature range was from room temperature to 90' C. The study of the effect of electrodes on K and tan S on flat slmples of porcelain discs, reported in an earlier paper, was extended to include h~gher voltage stresses in view of their importance in these measurements. Indigenous discs have been checked with regard to changes in body composition and firing temperatures against K and tan 6. The investigation brings out the possibility of adapting dielectric measurements for quality control on industrial applications.

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