This part of IEC 62821 applies to cables with insulation, and sheath if any, based on halogenfree, thermoplastic compound, and having low emission of smoke and corrosive gases when exposed to fire， of rated voltages Ug/U up to and including 450/750 V used in power installations of nominal voltage not exceeding 450/750 V a.c.
NOTE For some types of flexible cable the term “cord” is used.
The particular types of flexible cables are specified in IEC 62821-3. The code designations of these types of cables are given in Annex A.
The test methods specified in this standard and in IEC 62821-3 are given in IEC 60227-2,IEC 60332-1-2，IEC 60684-2，IEC 60754-1 and IEC 60754-2, and in the relevant parts of IEC 60811, and in IEC 61034-2 and in IEC 62821-2.
