Vertiv Liebert EXS 80kVA UPS, Руководство пользователя

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Vertiv™ Liebert EXS 80kVA UPS User Manual
1 Overview
Battery mode
Upon mains failure or voltage out of range, the rectifier and internal charger will stop running, and the
battery will supply power to the load through the inverter. 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.
In Battery mode, the run indicator (green) is on, alarm indicator (yellow) is on, and the buzzer beeps every
second. The 'Current' page in LCD will display 'On Battery'.
NOTE: 1. The battery has been fully charged before delivery. However, some loss of capacity is
inevitable during transportation and storage. Therefore, it is important to charge the battery for eight
hours before putting the UPS into operation for the first time, to ensure it can provide adequate backup
time.
2. The Liebert EXS UPS supports cold start function, while this function is activated, UPS can be
powered using battery mode without availability of input power supply. Therefore, the battery power
can also be utilized independently for improving the system availability.
Figure 1-4 Schematic diagram of battery mode
Rectifier input switch
Mains input
Battery charger
Output switch
Inverter Rectifier
UPS output
Battery
Inverter switch
Output switch
Inverter Rectifier
UPS output
Battery
Inverter switch
Bypass mode
If the overload overtime, inverter or rectifier failure appears during the UPS operation in Normal mode, the
UPS will transfer to Bypass mode, that is, the load is powered by the bypass source, which comes directly
from the mains input. If the rectifier is normal, the internal charger will charge the battery.
In Bypass mode, the run indicator (green) is on, alarm indicator (yellow) is on, and the buzzer beeps every
second. The 'Current' page in LCD will display 'On Bypass'.
Figure 1-5 Schematic diagram of bypass mode
Bypass input switch
Bypass input
Static switch
Output switch
UPS output
Bypass automatic switch
NOTE: In the event of a mains failure or if the mains voltage is outside tolerance while the UPS is in
Bypass mode, the UPS will shut down and the power supply to the load will be interrupted.