So far, several works have explored the inherent mechanical
characteristics of windings , and the mass-spring model
was successfully used to obtain the axial vibration characteristics.
Moreover, some research work has been devoted to the stressstrain
characteristics of insulations. Currently, fully coupled
magneto-mechanical analyses with FEM (2D and 3D) are state of
the art. However, most of the existing research focuses on
the winding vibration under normal conditions. Few experiments
have been conducted to correlate winding vibrations with the fault
identification of an actual transformer winding. In this paper, the
winding vibration characteristics are studied through an equivalent
mathematical model combined with electromagnetic force
analysis. During the experiment, the vibration of a disassembled
winding was studied to validate the proposed model. Then, specially
designed tests including clamping force adjustment and
winding fault simulation were carried out.