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9.3. How to Calculate the Operation Time
●What is the depth of discharge (DoD)?
To extend the battery-life, the power station set the 90% DOD, which means that
only 90% of the battery capacity can be discharged. 10% of the energy is reserved to
avoid damage to the battery due to over-discharge.
η indicates local inverter eciency. DOD=90%, η =90%.
10. UPS
10.1. UPS Description
An uninterruptible power supply or uninterruptible power source (UPS) is
an electrical apparatus that provides emergency power to a load when the
input power source or mains power fails. A UPS differs from an auxiliary or
emergency power system or standby generator in that it will provide near-
instantaneous protection from input power interruptions, by supplying energy
stored in batteries, supercapacitors, or ywheels.
10.1.1. FYI (For Your Information)
Max. capacity retention indicates the limit of capacity of the unit that can be
recharged by grid, if you set the Max. battery capacity at 80% at Time Control
UPS Mode and Customized UPS Mode then AC300 could be charged to 80% via
grid. The rest of the 20% capacity will be recharged via solar panels.
10.1.2. UPS working system introduction
(Main Panel) (Sub Panel)
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