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A
partial discharge test, carried out at RWE
Eurotest in Germany on a silicone cable revealed
high partial discharge levels that could not be
explained. Through the use of DayCor II camera
the location was revealed on the surface of the
cable termination. The surface, seemingly clean,
needed to be thoroughly washed to stop the
partial discharge activity on the termination.
According to RWE Eurotest,
conducting particles from the cable adhered to
the cable surface during the mounting and caused
the partial discharge. It was concluded that the
DayCor camera was the correct tool for easy
detection of such problems, that if unattended,
might lead to degradation of the polymer
termination and to its puncture. |