MICA tape, electrical rotating machine coil, and electrical rotating machine comprising the electrical rotating machine coil

• Main Authors: OKAMOTO TETSUSHI, ASO TOSHIYUKI, KAKIUCHI MIKIO, KAWAHARA MAKOTO, MUKAI KAZUMA, IWATA NORIYUKI, HATANO HIROSHI, SAWA FUMIO
• Format: Patent
• Language: English
• Published: 03.03.2009
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CONDUCTORS; ELECTRICITY; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES

A mica tape comprising a mica foil, a glass cloth, and an inorganic filler arranged on the glass cloth, wherein the mica tape is wound a plurality of times about an outer circumferential surface of a conductor portion of an electrical rotating machine coil so as to form an insulating layer for the coil, and the inorganic filler has a Mohs hardness falling within a range of 1 to 7 and exhibits a heat conductivity superior to those of the mica foil and the glass cloth, whereby, the inorganic filler is excellent in the heat conductivity and has a Mohs hardness not lower than that of the glass cloth contained in the mica tape, when used together with the inorganic filler.