Hitachi Energy Switzerland Ag

Abb Power Grids Switzerland Ag

Lorena Cebrian

Rafael Murillo

Carlos Roy

Martín Carlos Roy

Luis Sanchez Lago

Antonio Nogues

Rahul Shah

A non-liquid immersed transformer including a magnetic core having a winding axis and at least two coil windings wound around the magnetic core along the winding axis. One or more cooling tubes made of dielectric material are arranged inside at least one of the coil windings to cool down the coil winding using dielectric fluid flowing through the dielectric cooling tubes. Each cooling tube is wound continuously forming one or more complete loops around the core.

Non-liquid immersed transformers with improved coil cooling

A dry type cast-coil transformer having a voltage rating of 1 Kv and above, including: at least one coil with a plurality of conductor turns; a cast comprising a polymeric resin, encompassing the coil and having a cast surface; a ferromagnetic core on which the coil with the encompassing cast is mounted; an insulated cable termination connected to the coil, wherein the connection point between the insulated cable termination and the coil is within the cast, and wherein a flexible portion of the insulated cable termination further extends from the cast surface outwards and comprises a plurality of metal wires.

Dry type cast transformer with flexible connection terminal

Growing community of inventors

Saragossa, Spain

Lorena Cebrian