How does contamination affect cable oil and how can it be prevented?

Answers

  • October 1, 2024 at 5:43 pm by Jessica Mitchell

    Contamination impacts cable oil by:

    Reducing Dielectric Strength: Water and particles lower the oil’s ability to insulate.
    Increasing Electrical Losses: Impurities can create conductive paths, leading to leakage currents.
    Accelerating Degradation: Contaminants promote oxidation and acid formation.
    Corrosion: Water and acids can corrode metal components.
    Prevention methods:

    Sealing Systems: Ensure cable joints and terminations are properly sealed.
    Desiccant Breathers: Use on oil reservoirs to prevent moisture ingress.
    Regular Maintenance: Perform oil purification and system inspections.
    Handling Practices: Use clean equipment and containers when sampling or adding oil.

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