What is the difference between MV and HV cables?

MV (medium voltage) and HV (high voltage) cables are types of electrical cables used for different applications.

MV cables typically range from 1kV to 72.5kV and are used for power distribution in urban and rural areas, underground, overhead, and even underwater. They are usually insulated with cross-linked polyethylene (XLPE) or ethylene propylene rubber (EPR) and can handle high levels of electrical current.

On the other hand, HV cables are designed for high voltage applications ranging from 72.5kV to 550kV. These cables are used to transmit power over long distances, typically across power grids. Due to the very high voltage under which they operate, HV cables are typically insulated with oil-filled paper and are often housed inside protective metal pipes or conduits to prevent electrical interference.

In summary, the primary difference between MV and HV cables is their operating voltage range. MV cables are designed for lower voltage applications typically used for power distribution in urban and rural areas, while HV cables are designed for high voltage transmission over long distances. The insulation materials and protective measures employed in production and installation of the cables also differ between the two types.