Specification for insulating and sheathing materials for cables. Polyethylene sheathing compounds. Thermoplastic medium density polyethylene (MDPE) sheathing compound|Electrical insulating materials, Carbon black, Thermoplastic polymers, Electric cables, Solid electrical insulating materials, Tensile strength, High temperatures, Chemical composition, Temperature, Test duration, Elongation at fracture, Physical properties of materials, Pressure testing, Testing conditions, Polyolefins, Polymers, Polyethylene, Sheathed cables, Insulated cables, Ageing tests, Cable sheaths