Challenge for whole new development
Design with consideration given to usage
We are also trying to make strides in a new field in addition to electric insulation materials.
~ Development of a semiconductive sheet ~
The composition elements of electric equipment include a conductor that can conduct electricity, an insulation that cannot conduct electricity, and a semiconductor that has electrical resistance intermediate between former two elements. Electric equipment may obtain the best performance by using these elements within a certain balance.
Because a generator has a large potential difference inside, any failures (voids) may cause various electrical discharges, resulting in insulation degradation. Eliminating such defects and suppressing the potential differences will contribute to extending the life of the generator and improving its reliability.
Internal structure of the generator’s coils
Conventional Roebel transposition stuffing may easily cause failures (voids) and carry the risk of easily causing damage (electrical tree) due to electrical discharge.
Providing semiconductivity to this part may improve coil performance.
We developed a sheet with semiconductivity instead of using conventional Roebel transposition stuffing. Additionally, in order to easily fill the gaps of the Roebel transposition part of the generator coils, we made a semi-cured adhesive to improve fluidity.
Taking advantage of our advanced know-how of electrical insulators, we succeeded in developing semiconductive products, a new field. We achieved a successful outcome by cultivating our creativity day by day to create new benefit-oriented value.