30
5.3. Battery inverter operational mode
When mains become abnormal, battery will supply AC through SPWM Inverter; put it out through static inverter
switch.
5.4. Bypass operational mode
When inverter is not open or abnormal, then system will convert into bypass operational mode, AC inputs through
bypass circuit, and outputs through static switch.
5.5. Manual maintenance bypass mode
When asked on-wire maintenance without cutting power, the switch on maintenance bypass needs to be turned on,
cut off the output switch and auto bypass switch, this will completely separate UPS's circuit from input and output,
without interrupting users
’
output.
Note: when using maintenance bypass switch, must accord with operational procedures of maintenance switch!
Load
Static
switch
Manual maintenance bypass
Auto bypass
Inverter
Rectifier
Display unit
Communication unit
Main power input
Battery input
Bypass input
MCU control center
Manual maintenance bypass
Auto bypass
Load
Static
switch
MCU control center
Inverter
Rectifier
Display unit
Communication unit
Main power input
Battery input
Bypass input
Manual maintenance bypass
Auto bypass
Load
Static
switch
MCU control center
Inverter
Rectifier
Display unit
Communication unit
Main power input
Battery input
Bypass input
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