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Hydro-Governor Control
Governor PLC fails and need a manual operation capability for hydro turbine until it is fixed

Sirs,

Need to understand if a PLC system of a hydro turbine fails, can the system still be run manually? There is no manual operation capability from the original installation. If such a system is needed should that be requested at the original installation time?

Can such manual operation capability be integrated post installation of a governor control system?

Thank you in advance for your valued input
Rohan