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SPECIFICATION & CONSTRUCTION
1KV cables are designed and manufactured based on the national (IS) & international (IEC, BS) standards and project based customer specifications. Following are the standard stages of cable design & manufacturing.
| ELEMENT | XLPE | PVC/HR PVC |
| CONDUCTOR | THE CURRENT CARRYING COMPONENT : Nishant offer cables with Electrolytic Copper (Plain or Tinned) & Aluminium conductor in form of Solid, Stranded Circular, Compacted Circular and Shaped as per IS 8130, IEC 60228 & BS EN 60228. The sector shaped conductor are manufactured with pre-spiral lay which gives compact shape to the cable with reduced dia at laid up stage. |
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| INSULATION | XLPE, the 90 deg.C thermoset dielectric, is applied as insulation over the conductor by extrusion process. Cross Linked Polyethyelene (XLPE) as per IS 7098-1, IEC 60502-1, BS 7655. |
Thermoplastic dielectric, is applied as insulation over the conductor by extrusion process. We offer both general purpose PVC of 70 deg.C (Type A) and Heat Resistant PVC of 85 deg.C (Type C) Poly-Vinyl Chloride (PVC) as per IS 5831, IEC 60502-1, BS 7655.Low Smoke Zero Halogen (LSZH) as per IEC 60502-1. |
| LAYING UP OF CORES |
The multi-cores are Laid-up with appropriate tooling to form a compact circular shape, PVC fillers can be applied (wherever necessary) to provide circular shape. |
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| INNERSHEATH | THE BEDDING FOR ARMOUR : PVC / LSZH innersheath is applied as a protection over the laid up cores, Innersheath can be offered in 2 forms Extruded or Taped. Extruded PVC bedding of ST2/LSZH PVC as per IS 5831, IEC 60502-1, BS 7655. Taped Bedding of Thermoplastic tape to be compatible with temperature rating of the cable as per IS 7098-1, IEC 60502-1. |
PVC / LSZH innersheath is applied as a protection over the laid up cores, Innersheath can be offered in 2 forms Extruded or Taped. Extruded PVC bedding of ST2/LSZH PVC as per IS 5831, IEC 60502-1, BS 7655. Taped Bedding of Thermoplastic tape to be compatible with temperature rating of the cable as per IS 7098-1, IEC 60502-1. |
| ARMOUR | Galavnised Steel Round Wire as per IS 3975, IEC 60502-1, BS 10257. Galavnised Steel Flat Strip as per IS 3975, IEC 60502-1. For Single Core cables to be used in AC circuits Aluminium Round Wire or Flat Strip armour is provided to avoid magnetic hysteresis losses. For cables to be used in mines, required armour conductance (may be 75% to 40%) can be achieved by Double wire armour or by incorporating Tinned Copper Wires with Galvanised Steel Wires. |
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| OUTERSHEATH | PVC / LSZH outersheath is applied by extrusion process generally Black in colour with sequential length marking and required details Printed with non-contact ink jet printer. Poly-Vinyl Chloride (PVC) as per IS 5831, IEC 60502-1, BS 7655.Low Smoke Zero Halogen (LSZH) as per IEC 60502-1. |
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