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6. Operation Principles
6.2.7 Shutdown Mode
When the UPS is in the off state and utility power source is absent, the UPS will enter Shutdown Mode. When the utility power source
is absent and the UPS has discharged the batteries to the cut-off voltage level of 10V/battery at 25C, the UPS will also enter into a
Shutdown Mode. When the UPS enters this mode, it will shut off the control power of the UPS and rectifier, and shut down the charger
and inverter.
Shutdown Mode Diagrams
Q4
Maintenance Breaker
Q4
Maintenance Breaker
Q1
Input Breaker
Q1
Input Breaker
Q2
Bypass Breaker
Inverter
Relay
Inverter
Relay
Q3
Output Breaker
Q3
Output Breaker
Rectifier
Rectifier
Battery Breaker
Battery Breaker
Inverter
Inverter
STS
STS
Load
Load
Main
Main
Bypass
Single
Input
Dual
Inputs