초록 ▼

A stator of a large generator includes three potential, or “P”bars, disposed in slots atop the armature conductors in three of the stator slots. The “P”bars are part of a self-excitation system for producing DC excitation power for the rotating field of the generator. At least the stator slots conta

A stator of a large generator includes three potential, or “P”bars, disposed in slots atop the armature conductors in three of the stator slots. The “P”bars are part of a self-excitation system for producing DC excitation power for the rotating field of the generator. At least the stator slots containing the “P”bars include a pair of dovetail slots spaced radially closer to the air gap than the dovetail slots in the remaining stator slots used for securing armature conductor bars in stator slots. The inner end of a beam is fitted into the dovetail slot over the “P”bar. A yoke is secured over the outer end of the beam. The yoke is secured to studs in space block extensions positioned adjacent the stator slot containing the “P”bar. A ripple spring between the beam and the “P”bar applies a radial force to securely retain the “P”bar and the armature conductor bars in the slot.

대표청구항 ▼

Apparatus for securing a “P”bar in a stator slot of a generator stator atop at least one armature bar disposed in said slot, said stator slot including at least one pair of dovetail slots radially disposed to permit fitting said at least one armature bar and said “P”bar under a wedge fitted into sai

Apparatus for securing a “P”bar in a stator slot of a generator stator atop at least one armature bar disposed in said slot, said stator slot including at least one pair of dovetail slots radially disposed to permit fitting said at least one armature bar and said “P”bar under a wedge fitted into said dovetail slots, said stator including a taper at an outer end thereof, said taper intersecting said at least one pair of dovetail slots, comprising: a beam; said beam including angled edges at a first axial end thereof fittable into a portion of respective ones of said at least one pair of dovetail slots when the wedge is fitted into an other portion of said at least pair of dovetail slots; a yoke for stradling a second axial end of said beam when said beam is fitted into said at least one pair of dovetail slots; and means for securing said yoke to an axially outward end of said stator.