Following the previous post in which we focus on the definition and composition of electrical cables, today we see their classification according to different criteria:
- low voltage cables (up to 50 V).
- low voltage cables (up to 1000 V).
- medium voltage cables (up to 30 kV).
- high voltage cables (up to 66 kV).
- very high voltage cables (above 770 kV).
- conductors: Copper, aluminum or other metal.
- isolations: Plastics, elastomeric, impregnated paper or fluid viscous oil.
- protections: Screens, armor and covers.
Number of conductors
- unipolar: A single conductor wire.
- bipolar: 2 conductor wires.
- tripolar: 3 conductor wires.
- tetra polar: 4 conductor wires
- Almelec (alloy of aluminum, magnesium)
- Constantan, copper alloy
Conductor wire flexibility
Conductor wire insulation
- Thermoplastic insulation: Those where the material applied does not suffer chemical changes.
- Thermostable insulation: They are transformed upon extrusion, chemically. Therefore, they allow a higher service temperatures, thanks to they are more stable if they changes.
Could you add any additional criteria related to electrical wires clasification, please? We would really appreciate your contribution.