A bracket fixing hole that is configured to insert a screw part of a bracket fixing screw that is configured to mount the bracket to a bracket mounting part, a clamp hole that is configured to mount a cable clamp, and at least two notches that are configured to position the bracket to the at least two convex parts of the bracket mounting part are formed to a bracket. The combustion generates heat to raise steam to in turn generate electricity by a generator coupled to a steam turbine. The partial coils accommodated in the same slot are separately connected in series to each other to produce parallel coils, and the produced parallel coils are connected in parallel with each other.