N O. Description
6 UPS output
7 Rectifier input switch
8 Battery
9 Battery charger
Battery m ode
As shown in Figure 2.4 below , the operation mode in which the battery provides backup power supply to the loads through
the rectifier and inverter is called battery mode. Upon mains failure, the system will automatically transfer to the battery mode
with no load power interruption. When the mains is recovered, the system will automatically transfer back to the normal mode
without any manual intervention, and the power to the load will not be interrupted.
Figure 2.4 Schem atic d iagram of battery m ode
N O. Description
1 Rectifier
2 Inverter
3 Inverter switch
4 Output switch
5 UPS output
6 Battery
N O T E: B attery cold start function is available for sw itching the U PS on from Battery (ch arged) m ode
directly during m ains failure. Therefore, the battery power supply can be u sed independently to
im pro ve the availability of the UPS.
2 Overview
15
Vertiv™ Liebert® EXM2 UPS User Manual