The VACUTAP® series, just one example, with its vacuum switching technology for on-load tap-changers in oil-immersed and dry-type transformers.
This is now the most common form of technology in reactor-type tap-changers and has revolutionised resistor-type tap-changers.
We have been using this technology since the 1980´s and are continuously refining it thus bringing you advantages such as no service requirements before 150,000 to 500,000 switching operations, drastically reduced running costs for the whole physical life, increased availability of the transformer, no oil carbonization, no replacement of contacts and no oil filter systems – to mention but a few of the many benefits.