Patent ID: 7863794

Claim:
A 3-phase 2-layer armature winding of a rotating electrical machine, comprising: upper coil pieces and lower coil pieces housed in two layers in a plurality of slots provided in a armature core, the upper coil pieces and lower coil pieces being sequentially connected in series at a connection side coil end and a counter-connection side coil end, forming one and the same phase, each phase belt of the winding having n-th parallel circuits (n is an integer larger than 1), and an output terminal lead-out connection conductor connected to an output terminal and a neutral terminal lead-out connection conductor connected to a neutral terminal being connected to the coil pieces at the connection side coil end of said each phase belt, wherein the lead-out connection conductor connected to the output terminal is connected to a coil piece positioned at least farther than a first coil piece inside the phase belt counted from the end of said each phase belt, and a coil piece positioned at the end of the phase belt is connected to a coil piece positioned at least farther than the n-th (n is an integer larger than 1) inside the phase belt counted from the other end of the phase belt in the same parallel circuit, by a jumper wire.