Electric cables, low-hazard toxicity WASTE GAS

摘要

The invention relates to cable technology, namely to designs of electric cables with plastic insulation and sheath. The cable comprises at least one conductive wire having successive superimposed extruded insulation and an outer sheath, insulation and outer casing are made from polymer compositions with an oxygen index of not less than 28% and the equivalent measure of combustion product toxicity polymeric materials at least 121 g / m³. The cable may further comprise on top of conductors of the winding at least one ribbon stekloslyudosoderzhaschey superimposed overlap. The insulation of the cable can be made of polyvinyl chloride composition lowered fire danger mark Lousgran 1010. The outer cable sheath may be made of polyvinyl chloride composition lowered fire danger mark Lousgran 2010 or PPO Lousgran 20-35T. Isolation and / or outer sheath may also be made of silicone rubber containing no halogen, with toxicity index T is not less than 121 g / m³. The cable may further comprise a top conductor or insulation in the core of twisted insulated conductors of the winding of at least one organic or inorganic tape. Also in all embodiments of the cable may further comprise a top core twisted insulated conductors with an extruded inner sheath toxicity index of not less than 121 g / m³Which may be made from Polyvinylchloride composition reduced fire hazard Lousgran mark 3010. Also in all embodiments of the cable may further comprise on top of the insulation and / or over further superimposed over the twisted core of insulated conductors in the inner shell, a metal screen of copper wires or copper strips. Also, the cable may further comprise a top core or insulation over stranded insulated conductors in a core and an inner cladding in the form of armor winding of the metal strip superimposed overlapping or superimposed in spiral form metal wires. The technical result - increasing fire safety performance of the cable.