LBS DRAGON POWER 3, Руководство пользователя, Страница: 18 / 62

User Manual 2Overview
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AC
DC
DC
AC
DC
DC
Bypass input
Mains input
Battery input
Bypass static switch
Charger
Rectification
/PFC
Inverter
Maintenance bypass
Output
Work principle diagram
The UPS includes rectification/PFC, inverter, charger, bypass static switch etc function module, the
input power includes mains input, bypass input, battery input, the output mode includes inverter output,
bypass output and maintenance bypass output (if equipped).
When mains normal, the rectifier starts and the charger charges the battery at the same time. When
UPS off, if bypass normal, the system turns to bypass output; when UPS on, the mains boosts by
rectification/PFC and output DC bus voltage, and then go through inverter and output pure sine-wave
AC power, the output turns to inverter output to load from bypass output (if equipped).
When mains abnormal, the battery voltage boosts by rectification/PFC and output DC bus voltage, and
then go through inverter and output pure sine-wave AC power to load. When mains recover normal,
the UPS turns to mains mode from battery mode automatically.
2.2.2 Work Mode
There are 5 work modes of the UPS: normal mains power supply mode, battery inverter mode, bypass
power supply mode, ECO power supply mode and maintenance bypass power supply mode.
Normal mains power supply mode
When the mains power is normal, the UPS works in mains inverter status and charge the battery at the
same time. The work mode is as shown in 2032624074.26.264318872 . .