INTRODUCTIONEaton 9390 UPS (100–160 kVA) Installation and Operation Manual 164201604 Rev E www.eaton.com/powerquality 1-5In High Alert mode the unit transfers from Energy Saver mode to Normal mode(inverter online) or if in Normal mode remains in Normal mode for a default timeperiod of one hour. The High Alert mode time period is configurable by an EatonCustomer Service Engineer. High Alert mode allows the user to place the unit onlinewith full protection when outside conditions could cause a power disturbance. At thecompletion of the time period, the unit defaults back to Energy Saver mode. If theHigh Alert command is received during the time period, the timer will be restarted.1.3 Basic System ConfigurationsThe following basic UPS system configurations are possible: Single module UPS and one to four battery cabinets Single module UPS with UPS Sidecar (maintenance bypass or 1+1 tieconfiguration) and one to four battery cabinets Single module UPS, one to four battery cabinets, and an optional (IDC) Single module UPS, one to four battery cabinets, and an optional (IAC)(maintenance bypass, 1+1 tie, or 1+1 tie with maintenance bypass configuration) Single module UPS, one to four battery cabinets, and an optional (IAC) (distributionconfiguration) Powerware Hot Sync parallel system with two UPS modules, one to four batterycabinets for each UPS, and an optional module tie cabinet- One capacity/one redundant (1+1)- Two capacity (2+0) Powerware Hot Sync parallel system with three UPS modules, one to four batterycabinets for each UPS, and an optional module tie cabinet- Two capacity/one redundant (2+1)- Three capacity (3+0) Powerware Hot Sync parallel system with four UPS modules, one to four batterycabinets for each UPS, and an optional module tie cabinet- Three capacity/one redundant (3+1)- Four capacity (4+0) Powerware Hot Sync parallel system with two UPS modules, one to four batterycabinets for each UPS, an optional module tie cabinet, and an optional IDC- One capacity/one redundant (1+1)- Two capacity (2+0) Powerware Hot Sync parallel system with three UPS modules, one to four batterycabinets for each UPS, an optional module tie cabinet, and an optional IDC- Two capacity/one redundant (2+1)- Three capacity (3+0) Powerware Hot Sync parallel system with four UPS modules, one to four batterycabinets for each UPS, an optional module tie cabinet, and an optional IDC- Three capacity/one redundant (3+1)- Four capacity (4+0)The UPS system configuration can be enhanced by adding optional accessories suchas a Remote Emergency Power-off (REPO) control, (RMP), or X-Slot® communicationcards.