Key Features of Instrumentation Cables

• Conductor: Annealed bare/ uniform coated with Tinned/Silver Platted, High Conductivity, Electrolytic Grade Solid/Stranded/Flexible Conductor.
• Dielectric: Conductor are insulated with General Purpose/HR PVC Compound/Solid/Cellular PE/PP/or any other dielectric material as per customers specification.
• Colour of Dielectric: Cores are identified with different type of colour scheme as per IS: 1554[Pt-I]:88, 694:90, IEC, ITD or number Printing and Per Customers Scheme.
• Two/Three/Four cores are uniformly twisted together to form a Pair/Triad/Quad with maximum lay length 80 mm/as per requirement of customer. The lay shall be so chosen as to minimize cross talk in the cable.
• Individual Shielding may be of Poly Aluminium [Thin Layer of Aluminium Foil bonded to Polyester Film] Tape with Annealed Tinned Copper Drain Wire. It prevents the shorting of adjacent shield and minimizes the cross talk and ground loops. A Tinned Copper drain Wire is installed to provide continuous contact with the shield and allow to connection to ground. Tinning the drain wire reduces galvanic corrosion between drain and shield.
• Pair/Triad/Quad is laid up with suitable lay. The outer most layer is right hand lay and successive layers are laid up with opposite lay. Then, a Melinex Tape is provided to bind up laidup Pair/Triad/Quad.
• Overall l Shielding may be of Annealed Tinned Copper Braiding/Poly Aluminium [Thin Layer of Aluminium Foil bonded to Polyester Film] Tape with Annealed Tinned Copper Drain Wire. Braiding ATC Shield has high tensile Strength and provides better coverage in flexing application. They are easier to terminate. This provides effective shielding; cross talk and noise are kept to an absolute minimum.
• The laid up pair/triad/quad after shielding are provided with an inner sheath which may be either Extruded Inner Sheath or wrap with PVC Tape.
• Armoring is applied over inner Sheath. It may consist of galvanized Round Steel wires or galvanized Flat Steel Strips.