IEC 60811-4-2:1990
Common test methods for insulating and sheathing materials of electrical cables - Part 4: Methods specific to polyethylene and polypropylene compounds. Section Two: Elongation at break after pre-conditionning - Wrapping test after pre-conditionning - Wrapping test after thermal ageing in air
Gives the methods for measurement of elongation at break afterpre-conditioning, for wrapping test after pre-conditioning, forwraping test after thermal ageing in air, for measurement of massincrease, for long-term stability test and for measurement ofcopper-catalysed oxidative degradation, which apply to polyolefininsulations.
Gives the methods for measurement of elongation at break after pre-conditioning, for wrapping test after pre-conditioning, for wraping test after thermal ageing in air, for measurement of mass increase, for long-term stability test and for measurement of copper-catalysed oxidative degradation, which apply to polyolefin insulations.
Specifies the test methods for testing polymeric insulating and sheathing materials of electric and optical fibre cables for power distribution and communications, including cables used on ships and in offshore applications. These test methods apply specifically to polyolefin insulation and sheath. The principal changes with respect to the previous edition are listed below: a) A measurement of tensile strength is included in Clause 8. b) Clause 10 is now the only method in IEC 60811 for wrapping test after thermal ageing in air. c) Two ageing conditions are now specified for the long-term stability test in Annex A.
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