MD&A 7FH2 Spring Migration Repair
Mechanical Dynamics & Analysis (MD&A) experts offer a unique, patented repair process that eliminates the axial migration of slot leaf springs within 7FH2 generator fields. This repair can also be applied to 324 generator fields.
The blockage of the radial ventilation passages results in reduced hydrogen gas cooling flow, which can lead to thermal instabilities with the rotor leading to excessive rotor vibration and forced outages.
The springs migrate axially within the slot:
Also, see MD&A’s Solution for 7FH2 & 324 Stator End Winding Dusting Issues
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