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High Temperature Low Sag (HTLS) Conductor

{ As per Draft of IEEE standard P####/D1.0, January 2009, CIGRE report No.426 on “guide for Qualifying High Temperature Conductor for use onOverhead Transmission Lines”, Power Grid specification II }
  • Ultimate tensile strength
  • Stress strain test at controlled temperature
  • Stress Strain test at elevated temperature (Max. up to 400 ⁰C)
  • Temperature cycle test at elevated temperature (Up to 400 ⁰C)
  • Coefficient of linear expansion for core (Max. up to 400 ⁰C)
  • Creep test at controlled temperature
  • Creep test at elevated temperature (Max. up to 400 ˚C)
  • Torsion ductility test on complete conductor
  • Radial crush test
  • Heat Resistance test on Aluminum Alloy wire
  • Compression test
  • Bending test on composite core
  • Electrical Resistance test
  • Brittle fracture test on composite core
  • Aeolian vibration test
  • Ampacity Test
  • Salt spray test
  • Glass Transition Temperature Test (At partner end)
  • Flexural Strength Test (Currently at partner end)

Tension & Suspension clamp (Accessories) for Covered cable

[ EN 50397 Part 1 to 5, EN 50483 ]
  • Visual examination & dimension verification
  • Damage & failure load test
  • Slip test at ambient temperature for suspension clamps
  • Slip test at low temperature for suspension clamps
  • Slip test at high temperature for suspension clamps
  • Lift load and side load test for suspension clamp at ambient temperature
  • Thermal test for suspension clamps
  • Tensile test at ambient temperature for tensile clamps
  • Tensile test at low temperature for tensile clamps
  • Tensile test at high temperature for tensile clamps
  • Clamp bolt tightening test
  • Electrical ageing test on connectors
  • Climatic ageing test
  • Corrosion ageing test

AA, AAAC, Al-59 Conductors

[ IS-398 Part-1, IS-398 Part-4, IS-398 Part-2, IS-398 Part-5, IEC-1089 ]
  • Measurement of diameter of individual Aluminium wires and galvanized Steel wires
  • Breaking load test for individual strand
  • Torsion Test
  • Elongation Test
  • Wrapping test
  • Electrical Resistance test
  • Galvanizing test
  • Measurement of lay ratio/ Direction of lay
  • Breaking load (UTS) of complete conductor
  • Surface condition
  • Stress strain test on conductor & Steel Core




Copper Conductors

[ IS-1897, IS-13730, IS-613, IS-191 ]
  • Freedom from defects
  • Maximum overall dimensions (covered size)
  • Tolerance on conductor dimensions
  • Tensile strength
  • Elongation test
  • Chemical analysis
  • Electrical Resistance test

Vibration damper

[IS-9708, IEC-61897]
  • Visual examination
  • Dimensional checking
  • Resonance frequency test
  • Dynamic characteristics test
  • Damper efficiency test
  • Clamp slip test (Before Fatigue test)
  • Fatigue test (up to 10 million cycle)
  • Clamp Bolt Torque
  • Mass pull off test
  • Magnetic Power loss test
  • Galvanizing test (Uniformity of Zinc coating)

Transmission Line Products

[ IS-2486 Part 1, IEC-61284, IS-2629, IS 2121 ]
  • Visual examination
  • Verification of Dimension
  • Slip strength test
  • Mechanical strength test
  • Breaking load test
  • Galvanizing test
  • Chemical analysis
  • Electrical Resistance test
  • Heat Cycle test
  • Magnetic Power loss test




Insulator

[ IS: 731, IEC:61109 ]
  • Visual examination
  • Dimensional check
  • Mechanical tests
  • Specified mechanical load test
  • Assembled core load time test
  • Damage limit proof test
  • Bend test
  • Brittle fracture test
  • Dye penetration test
  • Galvanizing test

Anchoring & Suspension clamp (Accessories) for aerial bundle cable

[ NF C 33-40, NF C 33-41, EN 50483 ]
  • Visual examination EN 50483 & dimension verification
  • Tensile test
  • Slip test
  • Voltage test
  • Endurance test
  • Dynamic test
  • Climatic ageing test
  • Corrosion ageing test

Power Connectors

[ IS 5561 & IEC 61284 ]
  • Visual examination
  • Verification of Dimension
  • Tensile test
  • Galvanizing test
  • Chemical analysis
  • Electrical Resistance test
  • Temperature rise test
  • Heat Cycle test

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