III
Contents
About This Manual .......................................................................... I
1 Safety ........................................................................................ 1
2 System Solution ....................................................................... 5
2.1 On-grid System ....................................................................................................... 7
2.1.1 Conventional PV Grid-connected System ....................................................... 7
2.1.2 PV Energy Storage System (PV ESS) ................................................................... 8
2.2 Off-grid System .................................................................................................... 10
2.3 Retrofitting the Existing PV System .............................................................. 11
3 Function Description ............................................................. 12
3.1 Safety Function .................................................................................................... 12
3.1.1 Protection .................................................................................................................. 12
3.1.2 Earth Fault Alarm .................................................................................................... 12
3.2 Energy Conversion and Management ........................................................ 13
3.2.1 Power Derating ....................................................................................................... 13
3.2.2 External Demand Response ............................................................................... 15
3.2.3 Reactive Power Regulation ................................................................................. 15
3.2.4 Active Power Response ........................................................................................ 16
3.2.5 Load Control ............................................................................................................. 16
3.3 Battery Management ........................................................................................ 16
3.3.1 Charge Management ............................................................................................ 17
3.3.2 Discharge Management ...................................................................................... 19
3.3.3 Maintenance Management ................................................................................ 19
3.3.4 Battery Temperature Sensor (PT1000) ............................................................ 19
3.4 Communication and Configuration ............................................................. 20
4 Unpacking and Storing .......................................................... 21
4.1 Unpacking and Inspecting .............................................................................. 21
4.2 Delivery Contents ............................................................................................... 22
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