High Voltage Cables

APPLICATION:

Medium voltage cable provides a reliable power source in the event of unpredictable power outage situations, power distribution to isolated areas.Medium-voltage cables are used in the industry, power production, power transfer and distribution, and at wind farms. In addition, these medium-voltage cables are used in public transportation infrastructures, for example, to power up train and metro lines.


PROPERTIES:

  • Highly sophisticated Dry Cure Dry Cool (DCDC) Triple Extrusion process
  • Computerized vulcanizing & cooling systems as well as extruder heating control system
  • LSZH outer sheath for low smoke emmission.
  • Voltage Grade - 3.3 KV to 33 KV.

Standard:

  • IS 7098(2)
  • IEC 60502 -2
  • BS 6622/BS 7835

CONSTRUCTION:

Conductor

Compacted stranded - Class 2, Annealed / Plain Copper / Aluminium

Conductor Screening

Conductors for cables rated above 3.3 kV are screened with an extruded layer of semiconducting compound.

Insulation

The insulation shall be of dry – cured XLPE compound

Non - Metallic Insulation Screening

The insulation screening above 3.3 kV Cables consist of a layer of extruded semiconducting compound.

Mettalic Insulation Screening

Bare annealed copper tape / copper wire are applied over insulation screen to carry fault current.

Laying Up.

Insulated cores are laid up together, interstices filled up with non hygroscopic fillers to make the cable circular.

Inner Sheath

The cable cores are provided with a common covering of extruded PVC/PE sheath

Armouring

GI Round wire / Flat wire (Strip) / Double steel tape armouring is applied over the inner sheath in case of three core cables.

Outer Sheath

The cables are provided with an extruded PVC / PE / LSZH / FR / FRLS outer sheath over the armour



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