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General Procedure followed in the construction of TRINITY Cables

CONDUCTOR:

The conductor used for Elastomer insulated cables is composed of high conductivity annealed tinned/plain copper wires which are flexible enough to withstand constant flexing and prevent the formation of open circuit faults. The conductors, free from joints, are bunched/rope-stranded in continuous lengths. The conductor so manufactured provides high circuit integrity and excellent physical properties.

INSULATION:

Natural rubber is generally used as insulation for 1.1KV type Welding/Lift/TRS flexible cords & cables. The recent trend towards use of synthetic rubber like EPDM permits higher conductor operating temperature and current rating.

SCREENING/ARMORING:

a) Screening

Copper wire braid screening is used in mining cables . The process control and machinery available for screening at "TRINITY" prevents open ends and minimizes joints in the screen along the entire length of the core. The screen also permits maximum flexibility. Strict process control enforced during manufacture ensures no fault due to screen damage on the insulation in-spite of the mechanical abuse to the cable length.

b) Armoring

Trailing cables are protected by Galvanized steel wire armor to provide suitable mechanical protection.

SHEATH:

The commonly used sheathing materials are natural rubber, PCP, CSP, NBR-PVC blend. Polychloroprene (PCP) due to its technical advantage over natural rubber in terms of flame retardation, oil resistance and superior mechanical properties is extensively used for sheathing mining cables. CSP or NBR-PVC blend are also used in some applications where resistance to ozone and weathering are additionally required. 

Manufactured & Supplied by:
Bhagwati
CABLE      UDYOG
INDIA