AEC IST7 20kVA, User Manual, Page: 66 / 86

2 Overview
AEC UPS IST7 10-30 KVA
User Manual
58
Press the panel OFF combination button for 3s, the system turns to bypass power supply. Look up the
system running status in the touch screen, and ensure that the system turns to bypass to supply
power.

Start the UPS by touch screen
Click icon in system management page, it will enter ON/OFF page, click OK button to perform
the startup operation, as shown in Figure1.7.
Figure1.7 Start confirmation page
After start the inverter, UPS turns to inverter to supply power, the bypass output alarm disappears. User
can look up the system running status chart and ensure if the system turns to inverter to supply
power. During testing, ensure that the UPS three-phase output voltage and frequency is normal
through the real-time data in the touch screen. Measure the three-phase output voltage and
frequency of output breaker or external output distribution breaker on output distribution cabinet
and check if the voltage and frequency is normal.
Close the output breaker of output distribution cabinet or external output distribution breaker to supply
power for load.
2.3.3 UPS Shutdown
When the system bypass is normal, after the UPS shutdown, system will turn to bypass power supply
mode; when system bypass is abnormal, after the UPS shutdown, system will be with no output. Before
shutting down, please ensure that the load is closed.