Key Features of Xlpe Insulated And Pvc Sheathed Single Core Armoured Cable

• Conductor: Copper conductors are made from high conductivity Copper rods of 8 mm diameter. The rod is drawn to required sizes for the construction of conductors of different areas of cross section conforming to BS 6360.
• Insulation: Cross linkable polyethylene compound [GP 8] conforming to SS 7655:Section 1.3 is insulated over conductor by extrusion process with required thickness of insulation conforming to SS 5467
• Identification of core colours: number of cores 1 for Red or Black, 2 for Red and Black, 3 for Red, Yellow and Blue and 4 for Red, Yellow, Blue and Black.
• Laying up: Cores are laid up with right hand lay in the outermost layer in the sequence of above core colours. Interstices, if necessary, are covered with non hygroscopic fillers and covered with a binder tape for compactness and to maintain reasonably round shape.
• Bedding: Single core armoured cables have extruded PVC bedding.
• Armour: Single core cables for use on A.C systems, are armoured with single layer of aluminium wires
• Oversheath: Over sheaths are extruded with Black PVC compound of type 9 of BS 7655:Section 4.2 When specified anti termite properties can be provided on the over sheath.
• Packing, storage and handling: Cables for power supplies are always packed in appropriate sizes of strong and seasoned wooden drums designed to withstand long distance transit and preservation in stores.
• Basis of current rating: The ratings are in accordance with ERA Report 69-30 Part V which is in conformity to IEC-287.
• Minimum installation radius: Circular copper conductors = 6 D and Shaped copper conductors = 8 D [D is the tabulated overall diameter of the cable].
• Conditions of laying:
• Continuous operating temperature of conductor 90° C
• Ambient Temperature 30° C
• Ground Temperature 15° C
• Depth of laying in ground 0.5 m
• Thermal resistivity of ground 12011 C cm/W