APPLICATION

These cables are suitable for control purpose or measuring circuits, in generating stations, sub-stations, industrial installations etc. as well as for railway signalling. The can be installed indoors or outdoors, in air or in cable ducts.

Type YWY/YFY

Armoured 1.5 and 2.5 sq.mm copper conductors up to 61 cores

APPLICATION

These cables are suitable for control purposes or measuring circuits in generating stations, sub-stations, industrial installations etc., as well as for railway signalling. On account for armouring, the cables can withstand rough installations and operation conditions and tensile stresses. These can be laid in water or buried direct in the ground, even on steep slopes. They can also be installed indoors or outdoors, in air or in cable ducts.

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TROPODUR POWER CABLES 1100 V AS PER IS:1554 (PART I)-1988

Following cables for special applications are also available on enquity:-

Type AYY

Unarmoured Single-core with Aluminium conductors up to 1000 sq.mm.

APPLICATION

Light weight and small permissible bending radii makes single core TROPODUR Cables very easy to install. These cables are therefore particularly useful in power stations and sub-stations where a comparatively large number of cables in short lengths are to be used.

TROPODUR POWER CABLES 1100 V AS PER IS:1554 (PART I)-1988

Type AYY

Unarmoured Multi-core cables with Aluminium conductors up to 630 sq.mm.

APPLICATION

These power cables are suitable for use in generating stations, sub-stations, house service connections, street lighting, industrial installations, building wiring etc. They can be installed indoors or outdoors, in air or in cable ducts.

Type AYWY/AYFY

Armoured Multi-core cables with Aluminium conductors upto 500 sq.mm.

APPLICATION

These power cables are suitable for use in generating stations, sub-stations, distribution systems, house service connections, street lighting, industrial installations etc. On account of the armouring, the cables can withstand rough installation and operating conditions and tensile stresses, and can be laid in water or buried direct in the ground, even on steep slopes. They can also be installed indoors and outdoors, in air or in cable ducts.

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TROPODUR POWER CABLES 1.9/3.3 kV* to 6.35/11 kV. AS PER IS:1554 (PART 2) - 1988

Type AYFY 3.8/6.6 kV (E)

Armoured Multi-core cables with Aluminium conductors up to 500 sq.mm.

*1.9/3.3 kV cables can be used on earthed or unearthed system.

APPLICATION

These cables can be used both indoors and outdoors, and can be directly laid in the ground or under water. These are suitable for power stations, switching stations, industrial plants and as feeders in electricity supply undertakings.

Type AYCEFY 11 kV (E)

Armoured Screened Multi-core cables with Aluminium conductors up to 500 sq.mm. *

APPLICATION

11 kV TROPODUR Cables are suitable for all types of industrial applications and particularly for hydro and thermal power stations and sub-stations. They are ideally suited for chemical and fertiliser industries on account of their better corrosion resistance or in heavy industries where severe load fluctuations occur and for systems where there are frequent over voltages.

Cables of 6.35/11 kV grade (Earthed system) can be used on 6.6/6.6 kV (Unearthed system) also.

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TROPODUR MINING CABLES 1100 V AS PER IS: 1554 (PART I)-1988 AND 1.9/3.3 kV; 3.8/6.6 kV (E) AND 6.35/11 kV; AS PER IS: 1554 (PART 2) - 1988.

Type YFFGbY

Armoured Multi-core cables, with Copper conductors up to 500 sq.mm.

APPLICATION

TROPRODUR mining cables are light in weight, and hence easier to handle and install. It is provided with an armour consisting of double layer of formed galvanised steel wire which affords complete protection from falling rocks, wagon tipping or any other mechanical impact, and makes the cables strong enough to withstand tensile force many times its own weight especially when used as a shaft cable. Besides, the incorporation of a counter - helix over the top armour layer prevents bird caging. In addition, to ensure an adequate path for earth fault currents, the armour resistance is so designed that it never exceeds that of the main conductor by more than 33%. All the above features make TROPODUR mining cables ideally suited for use in all types of mines.

FLAME RETARDANT LOW SMOKE PVC CABLES (FRLS)

Until recently, flame retardance was never a major consideration when choosing a cable. However, in the recent past, the growing awareness of hazards due to fire incidence in power plants, high rise buildings, cable galleries etc., has resulted in the development of FRLS Cables. As compared to normal TROPODUR cables, TROPODUR (FRLS) cables offer improved performance characteristics in respect of the following:

1. Flame Retardance
2. Low Smoke Emission
3. Low Acid Gas Emission

In order to meet the above, special material is used for the outer sheath. The design, construction and testing of CCI's TROPODUR (FRLS) cables is as per IS: 1554 Part I and II.

Over and above the standard tests, CCI subjects FRLS cables and its components to a series of special tests to fulfil the need of the improved fire performance characteristics.

Apart from these tests on materials used on cables, following tests on finished cables are carried out:

1. Test on electrical cables under the conditions as per IEC 332-1
2. Flammability testing - Chimney test for Class F3 as per Swedish Standards SS 424 1475
3. Flame Tests as per IEEE Standard 383, 1974.

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APPLICATIONS:

FRLS cables are ideal for use in high rise buildings, data processing centres, hospitals, theatres, hotels, schools, warehouses, industrial complexes, power stations, underground railways, oil platforms and areas where safety of personnel or protection of equipment is necessary.

TROPODUR PVC MINING CABLES

Mining Cables of 1.1 kV, 3.3 kV to 11 kV grade are also manufactured as per IS:1554 with copper conductors. These cables have been approved by the Director General of Mines Safety for installation in mines.

GENERAL DESCRIPTION

CABLE TYPE YWWGbY 1.1 kV, 1.9/3.3 kV (E) & 3.8/6.6 kV (E) GRADES:

Stranded sector shaped (sm) plain (untinned) annealed copper conductor, PVC insulated, cores laid up together, provided with common covering of plastic tape wrapping, provided with double round wire armouring consisting of galvanised round steel wires plus tinned round copper wires wherever necessary (with separator tape in between the two layers of armouring), provided with steel tape counter helix (Gb) over the armouring and PVC outer sheathed cables.

CABLE TYPE YCEWWGbY 6.35/11 kV (E) GRADE:

Compact circulars stranded (rm/v) plain (untinned) annealed copper conductor screening of extruded semi-conducting compound, PVC insulated, provided with insulation screening over individual cores consisting of lapped semi-conducting tape followed by copper tape, cores laid up together with interstices suitably filled with non-hygroscopic fillers, provided with common covering of plastic tape wrapping, with double round wire armouring consisting of galvanized round steel wires plus tinned round copper wires wherever necessary (with a separator tape in between the two layers of armouring), provided with steel tape counter helix (Gb) over the armouring and PVC outer sheathed cables.

0.65/1.1 kV grade PVC Mining Cables shall be as per IS:1554 (Part I) 1988.

1.9/3.3 kV (E) & 6.35/11 kV (E) grade PVC Mining Cables shall be as per 1554 (Part II) 1988.

RESISTANCE OF ARMOUR

In case of cables for use in mines, the resistance of armour shall not exceed that of conductor as specified in IS:8130 - 1984 by more than 33 per cent. To satisfy this, substitution of galvanised round/formed* wires in the armour by required number of tinned copper wires/strips is permissible.

*Formed wires were earlier known as 'flat wire (strip).'

Cables with the following alternatives are also available on special enquiries.

a) Common covering of Extruded PVC inner sheath

b) Double Steel Formed Wire (FF) Armouring

SPECIAL TYPES NOT COVERED ABOVE CAN ALSO BE MANUFACTURED AGAINST SPECIFIC ORDER. FOR EXAMPLE: HIGH TENSION CABLES FOR AIRPORT LIGHTING PUR-POSES, PVC INSULATED LEAD SHEATHED CABLES FOR HIGHLY CORROSIVE CONDITIONS, SCREENED SIGNALLING CABLES, CABLES FOR LOW TEMPERATURE ETC. FURTHER, TROPODUR CABLES TO VARIOUS FOREIGN SPECIFICATIONS e.g. VDE, BS, ETC. HAVE BEEN MANUFACTURED AND EXPORTED BY US ALL OVER THE WORLD.

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