Hitachi Energy Ltd

Hitachi Energy Switzerland Ag

Robert Daszkiewicz

Pawel Klys

Alberto Prieto

Lukasz Michalski

Adam Stelmasiak

Marcel Ciesielski

A transformer core frame is provided with a reinforcement structure to form a reinforced transformer core frame. The reinforcement structure comprises one or several reinforcement panels comprising a honeycomb structure and affixed to the transformer core frame. A method of producing a reinforced transformer core frame is also described.

Reinforced transformer core frame and manufacturing method

A three-phase transformer including a transformer housing, a shell-form five-limb transformer core wherein main limbs include two outer main limbs and a middle main limb, three coil arrangements including two outer coil arrangements each arranged around a respective one of the outer main limbs, and a middle coil arrangement arranged around the middle main limb. The outer coil arrangements have an inter-coil insulation configured to electrically insulate the coil arrangements from the transformer housing and from the respective other ones of the coil arrangements, and wherein no inter-coil insulation is provided to the middle coil arrangement.

Transformer insulation modification

Growing community of inventors

Lodz, Poland

Robert Daszkiewicz