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LT XLPE Power Cable

Conductor

FGIL cables are made with both aluminium and copper conductors. The conductors are made from electrolytic-grade, high-purity aluminium and copper, conforming to IS 8130, and are available in Solid circular,Compacted circular, non-compacted circular and compacted shaped.

Insulation
  • FGIL XLPE cables are specially manufactured with high dielectric grade cross-linked polyethylene insulation, which is applied through an extrusion process.
  • FGIL XLPE cables are manufactured using an XLPE compound formulated with antioxidants to enhance thermal and oxidative stability.
  • XLPE insulated cables are designed to operate continuously at temperatures up to 90°C and can withstand short circuit temperatures of up to 250°C for short durations.
Core Identification

The cores are identified by different colours :

  • Single core: Red, Yellow, Blue, Black or Natural
  • Two core: Red & Black
  • Three core: Red, Yellow & Blue
  • Four core: Red, Yellow, Blue & Black
  • Three and half core: Red, Yellow, Blue for Phase Core and Black for Reduced Neutral Core
  • Five Core: Red, Yellow, Blue, Black & Grey
  • Six Core & Above: All core Grey with Black numbering
Laying Up :

In multicore cables, the cores are laid up according to the above colour scheme.

Inner Sheath

Laid-up cores are provided with a bedding of thermoplastic material to protect against mechanical damage.”

Armouring :

Armouring is applied over the inner sheath to provide protection against mechanical damage. Typically, the armouring consists of galvanized steel wires or strips. For single-core cables used in AC systems, non-magnetic hard-drawn aluminium wires or strips are employed as armouring material. For cables with a calculated diameter under armouring not exceeding 13 mm, armouring shall consist of round wires. For cables with a calculated diameter under armouring greater than 13 mm, armouring may consist of either round wires or strips.

For Single Core cables used in AC circuits Aluminium Round Wire or Flat Strip armour is provided to avoid magnetic hysteresis losses.

Outer Sheath :

All FGIL Cables are provided with PVC outer sheath. FGIL cables are manufactured with various characteristic of sheathing compounds.

Heat Resistant compound for sheath ST2
Flame retardant Compound FR
Flame retardant Low Smoke & Halogen FR-LSH
Low Smoke Halogen Free LSHF
UV radiation Resistance compound
Anti Rodent and Anti Termite Compound.

PVC compounds used for FGIL cables are available in various grades to meet the specifications of IS 5831.

Fire Performance – Critical Applications:

For enhanced fire safety, the following special PVC sheath compounds may be used:

  • FR (Flame Retardant): Designed to resist the spread of fire.
  • FR-LSH (Flame Retardant Low Smoke & Halogen): Limits smoke density and halogen gas emissions during combustion — ideal for indoor/public environments like hospitals, metros, and high-rise buildings.
Advantages Of XLPE Cables
  1. Higher Current Rating.
  2. Higher Short Circuit Rating.
  3. For a short time it can withstand maximum 130˚C and is favourable to endure short circuit stresses.
  4. The low dielectric loss is a significant advantage
  5. The excellent mechanical features of the insulation improves the protection against external effects.
  6. The resistance of the XLPE to acids, alkalies is outstanding and is often compensating the adverse environmental influences.
  7. Longer Service Life.
  8. Light in weight
  9. Has better resistance to most chemicals, oils, acids, etc.
  10. Can be installed along cable routes without elevation limitations
Product Code

As per IS 7098 (Part I) 1988, the codes are :

 

Constituent Code
Aluminium conductor A
XLPE insulation 2X
Steel round wire armour W
Non-magnetic round wire armour Wa
Steel strip armour F
Non-magnetic strip armour Fa
Double steel strip armour FF
Double steel round wire armour WW
PVC Outer sheath Y
Polyethylene outer sheath 2Y
LSHF Outer sheath 2
Application

The cables are suitable for used on AC Single phase or Three phase (Earthed or Unearthed) syatem for rated voltage upto and including 1100 Volts. These cables can be used on DC systems for rated voltage upto and including 1500 Volts to earth.

Quality Assurance

Fort Gloster always aim to achive satisfaction of customer, For that Fort Gloster has up to date laboratory facillities.
In the manufacture of cables, intelligent efforts are incorporated to achive quality. For a quality end product, Control starts from proper design of the product. All raw materials are selected carefully and only materials of high quality are used in Fort gloster product.

Test

Fort Gloster is self sufficient to carry out all Routine, Acceptance & Type Tests in its own laboratory. It has world class Testing facilities for Routine,Acceptance & Type Tests

Routine Test:

(i) High Voltage Test
(ii) Conductor Resistance Test

Type Test:

The cable samples are type tested in-house to ensure conformance as to various standards.
(i) Electrical Tests
(ii) Physical and mechanical Tests
(iii) Special Tests
(iv) Chemical & Fire Tests