EN 60216-5-2003 電氣絕緣材料.耐熱性能.第5部分:絕緣材料相對耐熱指數(RTE)的測定
Electrical insulating
materials — Thermal
endurance
properties —
Part 5: Determination of relative
thermal endurance index (RTE) of an
insulating material
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.