Chapter 5 UPS Operation Instructions 39
Liebert
®
ITA 10kVA UPS User Manual
5.3 Turning On UPS
After the UPS is powered on, press and hold the ON/SILENCE key for more than one second. After about 30
seconds, the UPS will transfer to the normal standby mode automatically, at this moment, the inverter indicator will
blink.
After the UPS has output, the inverter indicator will turn on, as shown in Figure 5-2.
Figure 5-2 Indicator status
Pressing the OFF key for one second to confirm that the UPS operates in Bypass mode, the interface is shown in
Figure 5-3.
Figure 5-3 Indicator status
It is recommended that the load capacity should not exceed 70% of the rated load to ensure the normal operation of
the UPS in the case of the sudden short-time extra-load, and to prolong the life time of the UPS at the same time.
警告
危 险
Note
1. If the UPS transfers from Normal mode to Bypass mode for three times within one hour due to the overload, the UPS will
remain in Bypass mode for one hour and afterwards cannot transfer back to Normal mode until the overload fault is removed.
2. The single UPS startup is divided into Normal mode startup and Battery mode startup, refer to
2.6.3 Normal Mode Startup
and
2.6.4 Battery Mode Startup
for details.
3. For details of startup of the parallel UPS, refer to
3.6.2 Startup Commissioning For Parallel System.
4. In Bypass mode, the load is powered by the mains supply directly instead of the pure power of the inverter output.
5.4 Battery Self-test
The battery self-test includes battery power-on self-test, battery manual self-test and battery periodic self-test.
