ELECTROMAGNETIC COIL, METHOD FOR MANUFACTURING SAME, AND INSULATING TAPE

摘要

An electromagnetic coil (1) having an insulating coating (6) formed by alternately laminating, on a coil conductor (2), a mica layer (3) including mica and a reinforcing layer (4) including fiber reinforcing material (7), inorganic particles (8) and resin (9), wherein the inorganic particles (8) include secondary agglomerate particles formed by agglomeration of primary particles of hexagonal crystal boron nitride. The electromagnetic coil (1) is provided with an insulating coating (6) that suppresses external outflow of inorganic particles and ensures favorable thermal conductivity. Furthermore, the invention also provides an insulating tape (20) having a mica layer (3) including mica and a reinforcing layer (4) including fiber reinforcing material (7), inorganic particles (8) and resin (9), which is layered on the mica layer, wherein the inorganic particles (8) include secondary agglomerate particles formed by agglomeration of primary particles of hexagonal crystal boron nitride. This insulating tape (20) is provided with an insulating coating that suppresses external outflow of inorganic particles and ensures favorable thermal conductivity.