IEC 60332 Tests on insulated wires and cables under fire conditions

Great, considerable damage at person and real value may occure through the combustion of thermoplastic cables. Professional installation of standard cables are operationally safe and doesn´t cause a fire. A fire may spread more or less along cables or the cables may lighted more or less depending on kind of cable type, used insulation and sheathing materials, and installation conditions, caused by appearing of an additional source of fire. As soon as a fire is developed, it is very important, that the flame propagation shall be, reduced or avoided. Those following standards shall be served to tested the flame propagation and flame retardancy of insulated wires and cables.

IEC 60332-2 (acc. to DIN VDE 0472-804, test procedure A)
This standard specifies a method of testing a small insulated wire under fire conditions.

IEC 60332-1 (acc. to DIN VDE 0472-804, test procedure B)
This standard specifies a method of testing a single, vertical insulated wire or cable under fire conditions.
If the test sample melts during the application of the flame, the IEC 332-2 shall be used.

IEC 60332-3 (gen. to with DIN VDE 0472-804, test procedure C)
This standard specifies a method to define the ability of bunched wires or cables to restrain flame
propagation. Practical example have shown, that the test acc. to IEC 60332-1 and -2 may not guarantee a
sufficient safty against spreading of fire. In this reason the IEC 60332-3 tests the spreading of fire or flame
propagation at groupings of cables, which is more practical.

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