An assembly of one or more electrical conductors held together with an overall sheath is known as LT power cables. This assembly is used for electrical power transmission and distribution purpose.RK Industries Pvt. Ltd. has established a firm reputation in India’s PVC & PE Cable Industry. Cross-linked polyethylene (XLPE) is known to be a thermosetting compound. It softens at the crystal melting point of polyethylene (85°C to 115°C) and becomes an elastic rubber-like consistency, and retains this property until the temperature rises to 250°C to 300°C. These cables are designed and manufactured as per current, voltage, operating maximum temperature and purpose of applications desired by a customer.
Conductor
The Conductor is the material that carries current. It can be of different materials (Aluminum/Copper). In the cable industry, it is preferred to use copper and aluminum conductors for LT power cables. Conductors in these cables can be Stranded / Solid / Circular shaped-Aluminum / Copper.
Insulator
An Insulator is the part of the cable which covers the conductor so that current won’t come out and create any electric fault. Insulators can be a wire (color) or any insulated material. The Insulated material over conductor can be PVC (Poly Vinyl Chloride) and XLPE (Cross-Linked Polyethylene) or any kind of rubber. The type of Insulation depends on operating temperature.
Sheath
The sheath is basically a cover which protects the power cable. The material used in the sheath is Polyvinyl Chloride (PVC), Rubber and often the same material as the bedding(Tinned Copper Wire which acts as mechanical protection too). The main work of sheath is to protect the cables from mechanical, climatic, electrical and chemical. The outer sheath is protection offered to cable not much electrically but more mechanically. Besides these, LT power cable has other parts too which are Armouring and Beading (Inner Sheath).
Advantages
Applications
Advantages
Specially folded construction protects from external weather elements
Moulded plastic extension pieces for fixing on the walls
Melded-in fins for ventilation
Holes on sides for heat dissipation
Moulded-in projections for fixing MCB, switches, etc.
Applications
Dielectric losses are very less in these cables.
LT power cable is flexible, lightweight, and fire-resistant in nature.
These cables can carry a high current with high short circuit rating 250°C as against 160°C for PVC.