Answered: #5: a) A single-core cable has a…

#5: a) A single-core cable has a conductor diameter of 3cm and insulation thickness of 0-6 cm. If the specific resistance of insulation is 5 x 1012 ohm -cm, calculate the insulation

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter4: Transmission Line Parameters

Section: Chapter Questions

Problem 4.1P: The Aluminum Electrical Conductor Handbook lists a dc resistance of 0.01558 ohm per 1000 ft at 20C...

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Concept explainers

Dielectric Breakdown

A dielectric is a material with low electrical conductivity and so is classified as an insulator. Dielectric materials are used to block the flow of electricity through them, allowing them to behave as an insulators. They can also be used to store electric charge or improve capacitance.Dielectrics have no free electrons for conduction because electrons are tightly bound to the nucleus. Because dielectrics contain a small number of electrons for electrical conductivity, they have a dipole. The two primary roles of dielectrics in electrical devices are insulation and electrical energy storage. An electric field polarizes the dielectric, and the polarization of the molecules allows dielectric materials to store charge.

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DH5:
a) A single-core cable has a conductor diameter of 3cm and insulation thickness of 0-6 cm. If
the specific resistance of insulation is 5x 1012 ohm -cm, calculate the insulation
resistance for a 3 km length of the cable.

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