Аннотация
This report gi~es a retrospecti~2 ~i~w to th6
activiti2s which ha~2 b2en performed in CIGRE
Working and Task Groups to find te~t a~thods for th2
partial discharge (PDI resistivity of insulating
materials. Schematic diagr-ams vf the uSed specimEns
are given. and a table shows th~ dim"nsions which
have b~en used during the experiments. First 2xperiences
with these specimens and chRracteristi~
details of the various IDethods are described. Though
life time experiments are close to practical insulation
demands. the large scattering of their distribution
is an important disadvantage. The registration
of PD magnitudes gives n2c~ssary lnformation
about PD phenomena and the characteristical progress
of PD ageing. Then the question is-discussed. which
criteria may be most important for the valuation of
test methods. It is also proposed that basic research
work should be continued, and steps of further
investigation are recommended.
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