Multi-conductor high voltage cable

The invention relates to an electrical cable comprising at least two cable cores, each cable core being encapsulated within a water barrier (8), at least two cable cores being situated within a jacket (10), said jacket (10) being wholly or partly water permeable. In this manner, a unique advantageous pressure adaptive cable structure has been obtained. The open-system cable of the invention provides a unique possibility of adaptive pressure equalization when the high voltage cable is exposed to great pressure from the environment such as that affecting a submarine-cable. Consequently, according to the invention, the permeable outer jacket ensures that water is pressed into the cable in the cavity between the lead-sheathed cable cores and the permeable armor which ensures that the high pressure on the armor will be equalized. On the other hand, if the cable is utilized as an ordinary underground-cable, the pressure on the cable will be kept relatively low, and no pressure equalizer is necessary.