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What is the difference between Cold Bending test with Cold Impact for cable?

Started by tacettin, January 17, 2023, 08:58:24 AM

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What is the difference between Cold Bending test with Cold Impact for cable?

The Cold Bending test is used to measure the cable's flexibility at low temperatures. The cable is bent around a small diameter mandrel a specific number of times at a specific low temperature and then inspected for any signs of damage or cracking. This test is used to ensure that the cable will remain flexible and not become brittle in cold temperatures.

IEC 60811-504
Electric and optical fibre cables - Test methods for non-metallic materials - Part 504: Mechanical tests - Bending tests at low temperature for insulation and sheaths


The Cold Impact test, also performed at low temperature, is used to measure the cable's resistance to impact. The cable is struck with a weight and the amount of energy required to break it is measured. This test is used to ensure that the cable will not break or become damaged when subjected to sudden impacts in cold temperatures.

IEC 60811-506
Electric and optical fibre cables - Test methods for non-metallic materials - Part 506: Mechanical tests - Impact test at low temperature for insulations and sheaths

In summary, Cold Bending test measures the flexibility of the cable at low temperatures, Cold Impact test measures the resistance to impact of the cable at low temperatures.

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