Eaton 9390 UPS (100–160 kVA) Installation and Operation Manual 164201604 Rev E www.eaton.com/powerquality 9-1Chapter 9 UPS Operating InstructionsThe following procedures provide instructions for operating the UPS or parallelsystem. For a description of the UPS control panel functions, see Chapter 8, “Usingthe Control Panel.”NOTE Before starting the UPS or parallel system, ensure all installation tasks are complete and apreliminary startup has been performed by authorized service personnel. The preliminary startup verifies allelectrical interconnections to ensure the installation was successful and the system operates properly.NOTE Read this section of the manual and have thorough knowledge of parallel and UPS operation beforeattempting to operate any of the controls.NOTE The UPS displays two minutes of battery runtime at the initial startup. After a 24-hour chargingperiod, the UPS automatically runs a battery test and the correct battery runtime displays.9.1 Single Module Operation9.1.1 Starting the UPS in Normal ModeTo start the UPS system:1. Close the UPS input feeder circuit breaker.2. If the UPS is dual feed, close the UPS Bypass input feeder circuit breaker.3. Observe the UPS control panel display becoming active, indicating logic power.4. Press the CONTROLS pushbutton on the main menu bar. The System Controlsscreen appears.5. On the System Controls screen, the power module (PM) status should indicateSHUTDOWN.6. Press the NORMAL pushbutton on the System Controls menu bar.If Auto Bypass is enabled, the critical load is immediately supplied by the bypasssource, in Bypass mode, until the inverter turns on and the UPS transfers toNormal mode. The status indicator on the UPS control panel indicates the UPS isin Bypass mode. If Auto Bypass is not enabled, the UPS output remains off untilthe UPS transfers to Normal mode.7. Observe the following messages appear sequentially on the power module (PM)status line:DC STARTINGINVERTER STARTINGINVERTER SYNCINGREADYONLINEThe rectifier and inverter turn on. The inverter continues to ramp up to fullvoltage.Figure
