"Cold Elongation Testing for Cables" is a test method used to evaluate the tensile properties of cables at low temperatures. This test is designed to simulate the application of cables in extreme cold environments to ensure that the cables still have sufficient flexibility and tensile strength at low temperatures to meet their design and performance requirements.Subjecting a sample to a low temperature environment, usually in a freezer or cryogenic test chamber. The temperature will usually vary depending on the requirements of the test standard, but is usually in the range of zero degrees Celsius or lower.
A tensile force is applied to a sample of cable at low temperature, usually by means of a tensile fixture. The test equipment records the applied tensile force and the elongation of the sample.Elongation is determined by measuring the distance from the point of initiation to the point of fracture. In order to pass this test, the elongation before fracture must increase by at least 20 per cent over the original test sample size.