Axial bolt-in cage stator frame assembly and method for assembling a stator

摘要

A stator cage design is provided in which the core is formed by stacking a plurality of lamination sectors each having grooves or cutouts defined at spaced locations about the outer periphery thereof. The grooves or cutouts of axially adjacent laminations are aligned to define longitudinal grooves for receiving keybars, each of which preferably has a generally circular cross section. A core flange assembly is disposed at least at each longitudinal end of the stacked laminations and includes a plurality of apertures therethrough for receiving the respective keybars. Compression bands are circumferentially disposed about the stacked lamination and keybar assembly to hold the keybars and radially lock the stacked laminations. The core is then concentrically disposed in a stator frame. The stator frame includes frame support plates for being bolted to the flanges of the stator core and radially extending frame section plates disposed at spaced locations along the length thereof between the frame support plates.