A failure of a high voltage power cable causes a service
interruption, costly location, repairs and loss of revenues.
Modern plug-in cable connectors (terminations) for GIS and
transformers are made from silicone rubber. The electrical life
span of this high polymeric material normally exceeds
40 years, but only in absence of partial discharge (PD) activity
that inevitably causes material degradation. Several IEC
standards prescribe routine tests on the prefabricated
components of HV cable accessories to be carried out by
manufacturers. The conventional IEC 60270 method, which
can be calibrated, is always applied during quality assurance
testing on the components in the factory in those cases. An
inaccurate assembly done under on-site conditions can
strongly affect the long-term performance of the complete
accessory