. "Y-\u0394 transform" . "\u0394-Y or Y-\u0394 transforms" . . "\u0394-Y and Y-\u0394 transforms" . "delta-connected motor" . . "delta connected" . . . "delta connections" . . . . . . . . . "\u0394-Y transform" . "Y-\u0394 transform" . "\u0394-Y or Y-\u0394 transform" . .