PRODUCT

Conductors of Insulated Cables

    IEC 60228 

    Solid aluminium and solid aluminium alloy conductors (Class1)

    Stranded circular non-compacted conductors,Stranded compacted circular conductors and stranded shaped conductors (class 2);Flexible conductors (classes 5 and 6)

    − plain or metal-coated annealed copper(coated with a thin layer of suitable metal, such as tin or tin alloy); 
    − aluminium or aluminium alloy.


Application:

Conductors of Insulated Cables Specifies the nominal cross-sectional areas, in the range 0,5 mm2 to 2 500 mm2, for conductors in electric power cables and cords of a wide range of types. These conductors include solid and stranded copper, aluminium and aluminium alloy conductors in cables for fixed installations and flexible copper conductors.

Classification: 

The conductors have been divided into four classes, 1, 2, 5 and 6. Those in classes 1 and 2 are intended for use in cables for fixed installations. Classes 5 and 6 are intended for use in flexible cables and cords but may also be used for fixed installations. 

Materials 

− plain or metal-coated annealed copper(coated with a thin layer of suitable metal, such as tin or tin alloy); 
− aluminium or aluminium alloy.

− Class 1: solid conductors. 

− Class 2: stranded conductors. 

− Class 5: flexible conductors. 

− Class 6: flexible conductors which are more flexible than class 5.


Solid conductors (class 1)

Solid aluminium and solid aluminium alloy conductors of sizes 10 mm2 to 35 mm2 shall be of circular cross-section. Larger sizes shall be of circular cross-section for single-core cables and may be of either circular or shaped cross-section for multi-core cables. 

Solid copper conductors shall be of circular cross-section. Solid copper conductors having nominal cross-sectional areas of 25 mm2 and above are for particular types of cable, e.g. mineral insulated, and not for general purposes.


Stranded circular non-compacted conductors (class 2)

Stranded aluminium or aluminium alloy conductors shall have a cross-sectional area not less than 10 mm2. The wires in each conductor shall all have the same nominal diameter.

Stranded compacted circular conductors and stranded shaped conductors (class 2)
Stranded compacted circular aluminium or aluminium alloy conductors shall have a nominal cross-sectional area not less than 10 mm2. Stranded shaped copper, aluminium or aluminium alloy conductors shall have 
a nominal cross-sectional area of not less than 25 mm2.


Flexible conductors (classes 5 and 6)
shall consist of plain or metal-coated annealed copper.The wires in each conductor shall have the same nominal diameter.



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