Compare Oil filled cable and Solid cable

 

Solid cable	Oil cable
As the thickness of insulation is more, the size and weight of the cable is more	As the thickness of dielectric ( insulation ) is less, the size and weight of the cable is less
Less current carrying capability	As the thermal resistance of the cable is less, heat dissipation increases and this will result in current carrying capacity increases
Void formation is done above rated voltage	Possibility of void formation is less due to pressure of oil
Possibility of earth fault is more	Earth fault occurs rarely
Maximum permissible stress increases	Less
Impregnation of paper is not proper	More perfect impregnation
Less cost	Costly as compared to solid cable
Cable laying is easy	Cable laying is difficult
Maintenance is not difficult	Maintenance is difficult

 

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