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LT XLPE Power Cables
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We offer excellent quality LT XLPE Power Cables, which are used in varied industrial practices. After conducting several physical and chemical tests, we ensure that these cables are resistant to chemical and corrosive gases. These are economical and with their high insulation resistance, they are ideal for transmission and distribution of power. Our LT XLPE Power Cables have long life as compared to the conventional PVC cables thus are in high demand in the market.
Features :- Chemical resistant
- Corrosion resistant
- Shock proof
- Easy to use
| - Insulation resistant
- Ideal for transmission and distribution of power
- Thermostatic as it is made of Polyethylene
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Applications :- Commercial sector
- Industrial sector
- Residential circuits
- Transformers
- Electricity boards
Features :- LT-XLPE Cables have longer life as compared to conventional PVC Cables.
- LT-XLPE Cables have a higher conductor temperature rating i.e. 90°C
- LT-XLPE Cables have a higher emergency overload capacity 120°C.
- Max. temperature limit under short circuit conditions for LT-XLPE Cables is 250°C
- Hence XLPE Cables have higher short circuit rating.
- Insulation resistance of LT-XLPE Cable is excellent & superior to Identical PVC Cables.
- LT-XLPE Cables have high corrosion resistance in polluted atmosphere.
- LT-XLPE Cables have better properties of resistance to chemical and corrosive gases.
- LT-XLPE Cables have low installation cost because of light weight, dimensions and are far more flexible.
- Jointing of LT-XLPE Cables is easier and quicker.
General Construction - LT XLPE / PVC Power Cables
LT XLPE/PVC Pwer Cables'GEMSCAB' PVC insulated Cables are manufactured confirming to IS:1554/Part-1/1988 and XLPE Insulated as per IS:7098/Part-1/1988.
Conductor The conductor of power cables is made from EC grade aluminium or annealed electrolytic copper. All conductors conform to IS: 8130. The conductors are solid / stranded / compact circular / sector shaped.
Insulation In PVC Power Cables the conductor is insulated with the poly vinyl chloride covering over conductor as insulation by extrusion process and In XLPE Power Cables cross linked polyethylene covering as insulation over conductor by extrusion process.
For identification of cores the following colour scheme is adopted.- 1 Core : Red, Black, Yellow, Blue
- 2 Cores : Red & Black
- 3 Cores : Red, Yellow & Blue
- 3.5 & 4 Cores : Red, Yellow, Blue & Black (Reduced Neutral Core in case of 3.5 Core
Laying Up
In multicore cables, cores are laid up together with a suitable lay, the outer most layer is laid up in right hand and successive layer with opposite lay. The interstices are filled with non-hygroscopic material wherever necessary to make the laid-up cores circular.
Inner Sheath
The laid up cores are provided with the PVC inner sheath by extrusion or by wrapping of PVC Tape. Single core cables do not have inner sheath.
Armouring
Armouring is applied over inner sheath incase the calculated diameter over inner sheath does not exceed 13 mm, the armour consists of galvanized round steel wires. Where the calculated diameter over the inner sheath is greater than 13 mm the armour generally consists of flat steel. If required, the cable can be manufactured with steel wire where calculated diameter of cable exceeds 13 mm. Single core cables are provided with Aluminium Wire/Strip armouring.
Outer Sheath
Outer Sheath is of PVC compound applied by extrusion over Insulation in case of unarmoured single core cables, over inner sheath in case of unarmoured multicore cables & over armouring in case of armoured cables.
The name'GEMSCAB' is embossed on the outer sheath of the cable at regular intervals. The word ELECTRIC is also embossed to distinguish these cables from Mining Cables. The FRLS/FR cables bear an additional legend FRLS or FR as the case may be. Any other information required by the customer can also be embossed.
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FLOW CHART FOR MANUFACTURING PROCESS & QUALITY CONTROL CHECKS FOR XLPE CABLES CONFORMING TO IS:7098(PART-1)1988.
FLOW CHART FOR MANUFACTURING PROCESSES & QUALITY CONTROL CHECK FOR PVC CABLES
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