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Power Cable HT

The behaviour of Electric Cables in presence of fire has been a matter of great concern to all Electrical Engineers involved in Generation, Transmission and Utilisation of electric power. Normally all XLPE Cables have an outer sheath of PVC. Although PVC by itself is flame retarding, it does produce highly toxic and corrosive fumes in the event of fire

Advantages

  • Higher Electrical Strength Retention
  • Higher Short Circuit Rating
  • Better Electrical , Mechanical & Thermal Properties
  • Easy Jointing & Termination

    Conductor

    • Stranded Class 2 - Annealed Plain / Tinned Copper / Aluminium - IS:8130 / IEC 60228/ BS 6360.

    Conductor Screen

    • Extruded semi-conducting compound – IS:7098 Part 2, IEC:60502 Part – 2, BS:6622, BS:7835.

    Insulation

    • XLPE – IS : 7098 Part 2, IEC:60502 Part – 2, BS:6622, BS:7835.
Power Cable HT Power Cable HT Power Cable HT

Capacitance

Approximate Capacitance (Microfarads/km) for Single Core Cables

Size Voltage Grade (kv)
  1.9/3.3 &3.3/3.3 3.8/6.6 6.6/6.6 &6.35/11 11/11 12.7/22 19/33 33/33
35              
50 0.32 0.26 0.22        
70 0.37 0.3 0.24 0.18      
95 0.41 0.34 0.28 0.2 0.19 0.14 0.14
120 0.46 0.38 0.3 0.22 0.2 0.16 0.15
150 0.5 0.4 0.33 0.23 0.22 0.16 0.16
185 0.55 0.44 0.36 0.25 0.24 0.18 0.17
240 0.61 0.49 0.4 0.28 0.26 0.19 0.18
300 0.67 0.51 0.43 0.3 0.28 0.21 0.2
400 0.75 0.52 0.48 0.34 0.31 0.23 0.22
500 0.79 0.56 0.55 0.38 0.35 0.26 0.24
630 0.83 0.64 0.62 0.43 0.4 0.29 0.27
800 0.87 0.71 0.69 0.47 0.44 0.32 0.3
1000 0.88 0.75 0.75 0.51 0.47 0.34 0.32

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