Main Protection of Steam Turbine Generator Unit:
1. Manual Shutdown
2. Turbine Overspeed Protection
3. Axial Displacement Protection
4. Condenser Low Vacuum Protection
5. Low Lubrication Oil Pressure Protection
6. High bearing temperature protection
7. Shaft vibration trip protection
8. Low oil pressure trip protection
9. Generator main protection
10. MFT trip protection
11. DEH trip
12. DEH fault
13. 220V power failure
14. High lubricating oil temperature
Auxiliary Equipment Protection:
1. Feedwater pump protection and interlock
2. Circulating water pump protection and interlock
3. Condensate pump protection and interlock
4. Condenser level interlock protection
5. Low makeup water level interlock protection
6. Deaerator level interlock protection
7. High-speed breaker interlock protection
8. Main interlock and locking logic of the 'function group'
9. Generator anti-condensation heater
10. Low-load water spray solenoid valve
11. Lubricating oil system
12. Crankgear Device
13. Drainage System
14. High-Pressure Control Oil System
15. Steam Seal System
16. Main Turbine Parameter Alarm
