Heat Resistant Annealed 300mm2 Pvc Insulated Copper Cable

Construction details

conductor

The conductor is made of electrolytic grade aluminum/copper, in line with IS: 8130: 1984 Class 1 and Class 2 standards
Insulation (IS: 5831-1984)
PVC Type A: General insulation for fixed installation cables.
PVC Type C: Heat-resistant (HR) insulation.

Core recognition

The core wire is identified by the following different colors:
Single core: red, yellow, blue, black or any color according to customer requirements

Two cores: red and black

Three cores: red, yellow and blue

Three and a half cores: red, yellow, blue and black neutral cores.

Quad core: red, yellow, blue and black

Five-core cable: red, yellow, blue, black and gray.

Six nuclei and above: the two adjacent nuclei (count and direction) in each layer are blue and yellow, and the rest are gray. The same sequence as above, and the indelible printing of core numbers, or all cores of the same color have an indelible numbered contrast color on each core. Other colors agreed with purchasers and manufacturers, with digital codes.

layout

According to the above color scheme, stack the core wires with appropriate right-hand wires.

Inner sheath

According to the agreement between the supplier and the buyer to use thermoplastic materials, the laminated core is provided by wrapping or extrusion. The material used should be compatible with the temperature rating of the PVC cable.

Armor

Armour is provided on the inner sheath to prevent mechanical damage. Armor usually uses galvanized steel wire or steel belt. The armor should be properly left-handed on the inner sheath. The minimum coverage of the armor should be 90%. In single-core cables used in AC systems, non-magnetic hard aluminum wires should be used for armoring. If the diameter of the inner sheath does not exceed 13 mm (greater than 13 mm), round steel wire is used. Use flat steel tape armor. Different sizes of round wires can also be provided according to specific requirements.

PVC jacket

The outer sheath should be sheathed on the inner sheath or stacked cores. If an outer sheath is provided on the laminated core, the average thickness of the outer sheath should be the sum of the nominal thickness of the outer sheath and the minimum thickness of the inner sheath specified in IS:1554 (Part-1)-1988 The sheath specified in the standard.