Insulating a power cable splice with using an elastomeric material practically impermeable to oil and water

摘要

Protection device for power cables with impregnated- paper-based insulation is disclosed. The protection device for a power cable (3) has an insulation (4) based on oil-impregnated paper. An external protection (15) comprises a barrier layer (11) placed in contact with the insulator (4) and made of an oil-impermeable elastomer material having a permittivity of between 2 and 100.The elastomer material is practically impermeable to water vapour and has a Mooney viscosity of between 12 and 90 at 100°C.