The dry type transformer factory in Brilon, Germany, is the first facility worldwide to have successfully tested a RESIBLOC® dry-type transformer rated at 66 kV. This means that ABB is the only manufacturer at present who can offer 3-phase dry-type transformers for voltages up to the 72.5 kV class. A prototype coil has been built to ensure the theoretical calculations and we have built the transformer of 2000kVA, which is in principle designed like a 20 MVA transformer to ensure all design criteria.
The tested transformer has been designed for a rated voltage of 66 kV and a surge voltage of 325 kV in accordance with IEC specifications.
The RESIBLOC® technology is well-known for its out-of-the-ordinary characteristics, and is particularly well suited for operation at relatively high ratings. The main target segments are utilities and industry customers.
"This characteristics, together with the meanwhile-validated withstand voltage up to the 72.5kV class, will enable ABB in future to implement entirely new concepts for medium-voltage transformer substations, and thus offer our customers crucially extended flexibility in terms of the possible applications involved, a capability unmatched by our competitors", comments Stefan Staudinger, Facility Manager in Brilon.
The main benefits of this environmental friendly transformer are for instance safety for people and property, reduced civil works, enhance withstand to short circuit stress and improved performance against seismic phenomena.
The spectrum of RESIBLOC® technology at the facility in Brilon will thus in future also include rated insulation voltages of up to 72.5 kV and ratings of up to 60 MVA.
The Development Center of the Product Group, headed by Dr. Jens Tepper, at the facility in Brilon has done excellent work within a minimized time-frame, creating this crucial competitive advantage for ABB.
