60216-5-2008
Matériaux isolants électriques – Propriétés d'endurance thermique – Partie 5: Détermination de l’indice d’endurance thermique relatif (RTE) d’un matériau isolant (Edition 3.0; Includes Access to Additional Content)

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适用范围: This part of IEC 60216 specifies the experimental and calculation procedures to be used for deriving the relative thermal endurance index of a material from experimental data obtained in accordance with the instructions of IEC 60216-1 and IEC 60216-2. The calculation procedures are supplementary to those of IEC 60216-3.Guidance is also given for assessment of thermal ageing after a single fixed time and temperature@ without extrapolation.The experimental data may in principle be obtained using destructive@ non-destructive or proof tests@ although destructive tests have been much more extensively employed. Data obtained from non-destructive or proof tests may be ??censored??@ in that measurement of times taken to reach the endpoint may have been terminated at some point after the median time but before all specimens have reached end-point (see 3.1 of IEC 60216-3).Guidance is given for preliminary assignment of a material to an insulation class@ based upon the thermal ageing performance.

60216-5-2008Matériaux isolants électriques – Propriétés d'endurance thermique – Partie 5: Détermination de l’indice d’endurance thermique relatif (RTE) d’un matériau isolant (Edition 3.0; Includes Access to Additional Content)