Classification by voltage resistance level of power cables:
Low voltage cable: cables with voltage levels of 6kV and below
Medium and high voltage cable: cables with voltage levels of 6kV and above, 35kV and below
High voltage cable: cables with voltage levels of 66kV and above
Classification by insulation medium of power cables:
Oil-impregnated paper dielectric cable: mostly cables with medium and high voltage levels
Non-drip paper dielectric cable: mostly cables with medium and high voltage levels
Cross-linked polyethylene (XLPE) dielectric cable: mostly cables with medium and high voltage levels
Other rubber and plastic dielectric cables: mostly cables with medium and high voltage levels and low voltage levels
Oil-filled cable: mostly cables with high voltage levels
Classification by structural type:
Cables without outer metal shielding layer: mostly low voltage cables
Cables with outer metal shielding layer: mostly cables with medium and high voltage levels and above
Cables with metallic inner sheath: mostly cables with high voltage levels
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