Key Phenomenon:
Control Room DCS Alarm
"DC Bus Fault" indicator light illuminated.
3. The DC bus voltage deviates from the allowable value.
Disposal Measures:
Inspect the output voltage of the silicon rectifier installation, the displayed values of the microcomputer insulation monitoring installation, and measure the bus voltage with a multimeter, to comprehensively determine the correct operation of the monitoring installation.
2. Adjusted the output of silicon rectification to restore the DC bus voltage and the float charging current of the battery. Aviation power supply: 16, 36V; 2, 400Hz frequency converter power supply; 2, 115/200V power supply; 4, 400Hz power supply; 8, aviation ground power supply; 15, 27V DC power supply.
If the abnormal DC bus voltage is caused by the installation of silicon rectifiers, the operation of the silicon rectifier installation should be suspended, switched to another DC bus, and at the same time, contact maintenance to handle the abnormal silicon rectifier installation.
