44 Chapter 5 UPS Operation Instructions
Liebert
®
ITA 10kVA UPS User Manual
3. Wait until the UPS operates in Bypass mode, and open the maintenance bypass MCB on the front panel of the
POD.
4. Press and hold the ON/SILENCE key for more than one second, the UPS will transfer to the Inverter mode.
5.8 UPS Complete Shutdown
For the UPS system equipped with POD, if you need to turn off the UPS completely, transfer the UPS to the
Maintenance Bypass mode from the Inverter mode according to the procedures in
5.7.7 Transferring UPS To
Maintenance Bypass
Mode From Inverter Output Mode
, to ensure that the use of the load during UPS power-off will
not be affected. If the load needs no power supply, open the maintenance bypass MCB directly, as shown in
Figure 5-8.
CB1
SW
CB2
Figure 5-8 Configuration of single UPS with external maintenance bypass
For the UPS system equipped with power supply by user, if you need to isolate the UPS from AC power, open the
external input MCB.
警告
危 险
Warning
To avoid physical injury, turn off the maintenance power.
5.9 Auto Startup
In case of mains failure, the UPS will supply power to the load through the battery, until the battery discharges to the
end-of-discharge (EOD) voltage, and the UPS will terminate the output.
The UPS will restart automatically and restore the output power supply after meeting the following conditions.
The mains restores after battery EOD
The UPS EOD Auto Start function is set
警告
危 险
Note
1. The EOD Auto Start function is set for the UPS products by default if there is no special customized requirement.
2. If the Auto Start function is not set, you can start the UPS manually by pressing the ON/SILENCE key.
5.10 UPS Monitoring
For the operation methods of the UPS background monitoring, refer to SiteMonitor monitoring software delivered with
the UPS.
