ICEA T-28-562:2003 PDF Download

ICEA T-28-562:2003 is a standard test method that is used to measure the hot creep of polymeric insulations in electric cables. The purpose of this test is to determine the relative degree of crosslinking of the insulation material. The method involves subjecting a specimen of the insulation material to a constant load stress in an air oven at a specified elevated temperature for a specified time period. The increase in elongation of the specimen is then measured at the end of the time period.

Additionally, after the elongation test is completed, the same specimen is subjected to an additional time period in the oven at the same elevated temperature, but with the load stress removed. After cooling, the set of the specimen, based on its original length, is determined.

This test method is significant because it provides consistent reproducibility, making it suitable for quality control purposes in determining the relative degree of crosslinking. It has been found to be more reproducible than other methods such as heat deformation and corresponds more closely to real service conditions compared to a solvent-extraction procedure.