This report describes test procedures for evaluation of the thermal endurance of electrical insulating materials, based on the combined use of sensitive analytical methods for the determination of test acceleration and of conventional ageing tests. It describes the condi-tions to be observed in the test procedures and shows how characteristics corresponding to temperature index (TI) and halving interval (HIC) of IEC Publication 216 are derived from the test results.
BS 7819:1995 history
1995BS 7819:1995 Guidelines for application of analytical test methods for thermal endurance testing of electrical insulating materials