High Voltage TechniqueU=200 kV was applied to the oil-insulated (Ɛroil=2.5) coaxial cylindrical electrode system with inner radius r1=8 cm and outer radius R=15 cm.a) Calculate the maximum field strength.b) In order to reduce the maximum field strength in the oil layer, if the inner electrode surface is coated with a solid insulating material with a thickness of 1 cm and relative dielectric constant Ɛr=5, what will be the maximum field strength in the remaining oil layer.Answers:a) Emax=39.77 kV/cmb) Emin=39 kV/cm

Ans (1) Maximum field strength .Emax Emax = Vr ln Rr ------ 1) Where ; Emax = Maximum field strength…

Answered: High Voltage Technique U=200 kV was…

Introductory Circuit Analysis (13th Edition)

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ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

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High Voltage Technique

U=200 kV was applied to the oil-insulated (Ɛ_roil=2.5) coaxial cylindrical electrode system with inner radius r₁=8 cm and outer radius R=15 cm.

a) Calculate the maximum field strength.
b) In order to reduce the maximum field strength in the oil layer, if the inner electrode surface is coated with a solid insulating material with a thickness of 1 cm and relative dielectric constant Ɛ_r=5, what will be the maximum field strength in the remaining oil layer.

Answers:

a) Emax=39.77 kV/cm

b) Emin=39 kV/cm

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