| abstract |
PROBLEM TO BE SOLVED: To provide a thermosetting resin composition having curability and storage stability in a thin film portion, and high reliability using the composition. An insulated coil with good manufacturing workability can be obtained at low cost. SOLUTION: (A) an epoxy resin having two or more epoxy groups in a molecule, (B) a liquid cyclic acid anhydride, A thermosetting resin composition comprising (C) a tetraphenylborate salt and / or a boron trichloride complex, and (D) a metal salt of an organic acid, and the thermosetting resin composition are used as a coil conductor and an insulating material for the conductor. An insulating coil comprising a layer formed by winding an insulating tape obtained by bonding a reinforcing material with a binder resin to a reinforcing material, and impregnating and curing the layer. |