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1. (WO2018220018) INSULATING TRANSFORMERS

Pub. No.:    WO/2018/220018    International Application No.:    PCT/EP2018/064197
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Thu May 31 01:59:59 CEST 2018
IPC: H01F 27/32
Applicants: ABB SCHWEIZ AG
Inventors: NOGUES BARRIERAS, Antonio
ROY MARTÍN, Carlos
CEBRIÁN LLES, Lorena
MURILLO, Rafael
SÁNCHEZ LAGO, Luis
SHAH, Rahul R.
Title: INSULATING TRANSFORMERS
Abstract:
Dry-type transfornners with insulating modules are disclosed. Example insulating modules comprise dielectric screens and supporting blocks. The supporting blocks support the dielectric screens over windings of the transformer. The dielectric screens have first substantially even portions configured to adapt in spaces defined by corresponding cylindrical barriers arranged between first and second windings of the transformers and second substantially even portions, transversal to the first portions and to the first windings of the transformers and extending outwards from the first portions and beyond the supporting blocks. The dielectric screens partly extend around a winding.