With the 150.000th GEAFOL-transformer the 300 employees of the Swabian town Kirchheim/Teck once again made it to the technical Champions-League. The 20 MVA transformer will be transforming power from 33 to 11.50 kV. It is one of the largest GEAFOL-transformers that is equipped with a tap-changer and a separate regulation winding and will be mounted in a noise insulated outdoor-cabinet.
This transformer continues on the path of technological highlights designed and built at the Cast resin transformer factory in Kirchheim. Examples include the largest cast resin transformer worldwide with 40 MVA built in 2007 for an HVDC test application or the 20 MVA units with air-water-cooling for an FLNG (floating liquefied natural gas) ship.
The success story of GEAFOL started more than 50 years ago, when Siemens built the first 160-kVA-transformer with cast-resin insulation. Not using transformer oil as an insulation medium was a groundbreaking innovation.
The biggest and most complex GEAFOL-cast-resin transformers are designed and manufactured at the Siemens transformer plant in Kirchheim/Teck. But there are also other Siemens plants that master the GEAFOL technology, so customers all over the world can benefit from the advantages of the cast resin technology.