JPS54136692A - Corona shielding layer - Google Patents

Abstract

PURPOSE: To suppress a temperature rise with a resistance value lowered at around the linkage portion, by constructing a corona shielding layer, constructed by applying a SiC paint, near the linkage portion with a conductive paint layer in a manner with the same SiC paint applied to the fiber basic material.

CONSTITUTION: Of a corona shielding layer 4, which is constructed by applying a SiC paint with a quantity of the binder content more than 60 vol.% of the total capacity after a removal of the solvent, a vicinity 5 of the linkage portion with a conductive paint layer 3 is constructed by applying the above described SiC paint into the fibre basic material. For instance, on an insulation layer 2 above a coil conductor 1 of stator coil end of the rotary machine, is constructed the above described SiC paint layer 4, with a portion, linked to said conductive paint layer 3, constructed by piling a SiC paint applied basic layer 5 or linking the painted basic layer 5. In such process, the binder in the SiC paint is made sticking also to surfaces of the fibre with a less quantity of binder sticking to the surrondings of the SiC particle to lower an electric resistance, enabling a suppression of temperature rise with the resistance value decreased in the vicinity of the linkage portion by a simplified method.

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