Vertiv EXM 0080kTK16FN01000, User Manual

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78 Chapter 5 UPS Operation Introduction
Liebert EXM 80kVA ~ 200kVA UPS User Manual
5.3 Procedures For Transfer Between Operation Modes
5.3.1 Transfer From Normal Mode To Battery Mode
Open the external power switch to isolate the mains power and initiate the UPS on battery mode. To
transfer the UPS back to normal mode, then close the external power switch to re-connect the mains
power to the UPS. 10 seconds later, the rectifier restarts automatically, and the UPS works in normal mode.
5.3.2 Transfer From Normal Mode To Bypass Mode
Click the Off key shown in Figure 5-8, and the UPS will transfer to bypass mode.
Figure 5-8 Transfer UPS to Bypass mode
Note
In bypass mode, the load is directly fed by the mains power instead of the pure AC power from the inverter.
5.3.3 Transfer From Bypass Mode To Normal Mode
When the UPS is in bypass mode, click the On key in Figure 5-9, and the inverter starts up. Then the UPS
is transferred from bypass mode to normal mode.