NFPA 20
Fire Pump Group Control System Individual control panels are used for electric pump, diesel pump and jockey pump Lock mechanism are used on panels Continuous grounding Pumps can run by manual control and emergency-run mechanical control on controller By the help of Locked Rotor Protection (LRP), in case of locking rotor main switch is automatically shut down. No thermic protection on controller (except jockey pump controller) Alarm signals on electric pump controller (except jockey pump) 1. pump running 2. pump failure 3. minimum water level(if required) 4. phase reversal 5. loss of phase 6. power suitable 7. lamp test (if required) 8. audible(can be switched off) and visible(can not be switched off) alarms 9. LRP Two 12 V batteries for diesel engine Battery chargers Additive alarm signals for diesel driven pumps 1. high motor temperature 2. low oil pressure 3. over speed 4. control is in automatic mode 5. charger lamp 6. failure of 1st battery 7. failure of 2nd battery 8. starting failure 9. failure of battery charger 10. engine running 11. lamp test button (optional) 12. audible(can be switched off) and visible(can not be switched off) alarms
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