Speaker: Finley Ledbetter, Group CBS
There are millions of medium-voltage vacuum interrupters in the world that have either hit their original expected mortality date or are past the mid-life expectation of service life.
Previously, there were no practical methods for field conditioning of vacuum interrupters to change the mortality curve of the device. But with advances in servicing technology through the advent of vacuum interrupter conditioning (VIC) we now have methods that can convert free gas molecules inside the envelope to solids such as oxides or carbides.
This paper will explain the technology, highlight several recent case studies, show how it is applied in the field, and show how this all comes together to extend the service life of existing vacuum interrupters.