![]() ![]() Just some thoughts fwiw.I'm not a big generator guy. Fault can be seen from increased vibration, and possibly change in field current for a given operating condition. So we expect a lot of time to detect the shorted rotor winding and schedule repairs before the fault disrupts the machine. Accessories Hardware Main components and software Mountings and enclosures Installation accessories Cables and networks Remote communications Spares and. On contrast the dc winding has no auto transformer effect and the current change is only a result of impedance change which usually is small, especially with several could in series. The ac winding short immediately brings local high currents in the shorted loop due to auto transformer effect, which causes rapid escalation of the fault. The flux probe, cabling and installation materials are ressistant to the harsh environment within the generator. There is a dramatic difference in progression of shorted turn fault in an ac winding (like motor stator) compared to dc winding (like generator rotor). I presume the purpose of the flux probe if to detect shorted turns. ![]()
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