Electrical Cables
In the cables, the location of fault is usually found out by comparing

The capacitances of insulated conductors
The inductance of conductors
All of the listed here
The resistance of the conductor

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Electrical Cables
Capacitance grading of cable implies

Capacitance required to be introduced at different lengths to counter the effect of inductance
Use of dielectrics of different permeabilities
Grading according to capacitance of cables per km length
Cables using single dielectric in different concentrations

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