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


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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