Submersible cables (also called 3core Flat cables) are designed for use in underground, under-water or on wet surface. These cables are manufactured with conductor using annealed exposed copper wires of electrolytic position, bunched correctly to confirm required flexibility. The conductor is additionally protected with thermo set type Cross Linked Polyethylene insulation with standardized thickness with each of the core colours in red, yellow and blue by using most modern equipment and extrusion modus operandi. The cover with uniform thickness of Heat and Moisture Resistant type PVC compound formulated and manufactured in-house, is extruded over these coloured cores in a flat formation. The colour of the sheath is black.
Higher current rating: It can withstand continuous conductor temperature of 90 degree Celsius as against 70 degree Celsius for PVC. This means higher current carrying capacity and hence it is possible to use one size lower than that of PVC for the same current. These cables can withstand extreme voltage fluctuations.
Higher overload capacity: it can withstand up to 130 degree during emergency overloading as against 120 degree for PVC. Hence, in case of emergency it can sustain for longer period of time compared to PVC.
Higher short circuit rating: It can withstand up to 250 degree Celsius under short circuit condition as against 160 degree C for PVC.
Lighter in weight and smaller bending radius: It has lower density than PVC which makes them lighter in weight and hence the bending radius is smaller than that of PVC.
Lower Di-electric constant and power factor: It results in saving in power losses which means saving in costs.
Better impact, abrasion, corrosion resistance: It is safer than PVC cables against mechanical damage, abrasion & corrosion.
Easier jointing and termination: It requires no special skills or equipment for jointing and termination.
Application: These cables enjoy longer and trouble free life and are ideally suitable for the giving the power connection in submersible pump motors used mainly for agricultural purpose and for ground water pumping in cities.