IEC 62821-1:2015 applies to cables with insulation, and sheath if any, based on halogen-free, thermoplastic compound, and having low emission of smoke and corrosive gases when exposed to fire, of rated voltages up to and including 450/750 V used in power installations of nominal voltage not exceeding 450/750 V a.c.
IEC 62821-1 Ed. 1.0 b:2015
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Electric cables – Halogen-free, low smoke, thermoplastic insulated and sheathed cables of rated voltages up to and including 450/750 V – Part 1: General requirements