Electrical insulating materials. Thermal endurance properties - Determination of thermal endurance indices (TI and RTE) of an insulating material using the fixed time frame method Ingestion-build-209208 Who is BS EN 12697‑44-Crack

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Electrical insulating materials. Thermal endurance properties - Determination of thermal endurance indices (TI and RTE) of an insulating material using the fixed time frame method Ingestion-build-209208 Who is BS EN 12697‑44-Crack1 Scope This part of IEC 60216 specifies the experimental and calculation procedures for deriving the thermal endurance characteristics, temperature index (TI) and relative thermal endurance index (RTE) of a material using the fixed time frame method (FTFM). In this protocol, the ageing takes place for a small number of fixed times, using the appropriate number of ageing temperatures throughout each time, the properties of the specimens being measured