ELECTRICAL CABLE WITH SEMICONDUCTING UPPER LAYER DIFFERENT FROM SHEATH Russian patent published in 2015 - IPC H01B7/36 

FIELD: electricity.

SUBSTANCE: invention relates to a medium-voltage or high-voltage cable for transfer and distribution of electrical energy. An electrical power cable has external semiconducting layer (24) extruded around the outermost layer of sheath (22) of the cable and is in contact with it. Sheath (22) can have multiple polymer layers (22-1, 22-2). Semiconducting layer (24) differs from the outermost layer of sheath (22), which is located directly under it, at least by colour and possibly also by texture, as well as thickness of semiconducting layer (24) comprises up to 20% of total thickness of sheath (22) and semiconducting layer (24).

EFFECT: observable properties of semiconducting layer (24) and the outermost layer of sheath (22) reduce hazard of unintentional damage to sheath (22) at removal of semiconducting layer (24) for sheath integrity tests.

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