Testing of XLPE Cable above 33KV up to 220KV

Type Tests for XLPE Copper Cable

Tests on Conductor

1. Annealing Test
2. Resistance Test

Tests on Insulation

3. Measurement of thickness of insulation
4. Measurement of tensile strength and elongation at break
5. Thermal ageing in air oven
6. Hot set test
7. Shrinkage test
8. Void and contaminants test

Tests on Semiconductor Layer on the Insulation

9. Resistivity test on semi-conducting layers

Tests on Metallic Screen

10. Test for copper wire
11. Test for copper tape

Tests on Metallic Sheath

12. Measurement of thickness of the metallic sheath

Tests on Armours

13. Measurement of diameter for circular armours & measurement of width and thickness of strip armours
14. Tensile strength and elongation at break of armours
15. Wrapping test on armours
16. Resistivity test on armour

Tests on Outer Sheath

17. Measurement of thickness of outer sheath
18. Tensile strength and elongation at break of outer sheath
19. Thermal ageing in air oven of outer sheath
20. Loss of mass test
21. Heat shock test
22. Hot deformation test
23. Shrinkage test
24. Thermal stability test

Tests on Complete Cable Specimen

25. Flammability test
26. Water tightness test
27. Thermal ageing on entire cable sample
28. Partial discharge test (crossed out)
29. Bending test followed by partial discharge test
30. Load cycle test followed by partial discharge test
31. Tan delta measurement with capacitance measurement at ambient temperature
32. Impulse withstand test
33. Power frequency withstand test

Routine Tests on XLPE HV Cables

1. Measurement of conductor resistance
2. Measurement of partial discharge
3. High voltage withstand test

Acceptance Tests on XLPE HV Cables

1. Conductor resistance test
2. Annealing test
3. Measurement of dimension of insulation
4. Hot set test on insulation
5. Void and contaminants test
6. Test for thickness of metallic sheath
7. Partial discharge test
8. High voltage withstand test
9. Measurement of capacitance