UPS Operating InstructionsEaton 93PM UPS (20–100 kW, 480V – 100 kW Frame) Installation and Operation Manual P-164000227—Rev 6 www.eaton.com/powerquality 6-256.4.2 Starting the Parallel System in Bypass ModeIf the inverter output of the UPS is not available and the critical load needs to be energized:CAUTIONIn Bypass mode, the critical load is not protected from commercial power interruptions andabnormalities.1. Close all Module Output Breakers (MOBs).2. Close the UPS input feeder circuit breaker.3. If dual feed, close the UPS bypass feeder circuit breaker.4. If IBCs are installed, close the battery breakers.5. Observe the UPS control panel display becoming active, indicating logic power.6. Verify no alarms are active.7. Tap the CONTROLS tab on the main menu navigation bar. The System Control screen is displayed.8. Tap the GO TO BYPASS button.The critical load is immediately supplied by the bypass source, in Bypass mode from all UPSs.The BYPASS status indicator is illuminated.6.4.3 Starting the Parallel System UPMsTo start the power modules without transferring the critical load to Double Conversion mode:1. Close the UPS input feeder circuit breaker.2. If dual feed, close the UPS Bypass input feeder circuit breaker.3. Observe the UPS control panel becoming active, indicating logic power.4. Verify no alarms are active.5. Tap the CONTROLS tab on the main menu navigation bar. The System Control screen is displayed.6. Tap the MODULES CONTROLS tab on the secondary Control menu navigation bar. The UPM Selectscreen is displayed.7. On the UPM Select screen, select UPM 1. The UPM Control Screen is displayed.8. Tap the START MODULE button.The UPM 1 rectifier and inverter turn on. When the inverter reaches full voltage, the UPS is ready totransfer to the Double Conversion mode and supply the critical load.9. Repeat Steps 5 through 8 selecting UPM 2 to start UPM 2.The UPM 2 rectifier and inverter turn on. When the inverter reaches full voltage, the UPS is ready totransfer to the Double Conversion mode and supply the critical load.10. Repeat Steps 5 through 8 selecting UPM 3 to start UPM 3.The UPM 3 rectifier and inverter turn on. When the inverter reaches full voltage, the UPS is ready totransfer to the Double Conversion mode and supply the critical load.11. Repeat Steps 1 through 10 for each UPS in the parallel system.
