最终查出造成机组事故的根本原因是可控硅励磁装置供电电源无工作状态监视信号及故障报警信号；
The final basic cause that resulted in the failure is no working state monitoring signal and failure warning signal of power supply source of controlled silicon excitation device.
指示：发电机组电源指示、供电指示、各类故障报警指示；
Instructions: generator power indicator, power indication, all kinds of fault alarm indication;
指示：发电机组电源指示、供电指示、各类故障报警指示；
Instructions: generator power indicator, power indication, all kinds of fault alarm indication;
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