IV
Contents
About This Manual .................................................................... II
Safety .................................................................................... 1
PV Panels .................................................................................. 1
Utility Grid .................................................................................. 1
Inverter ....................................................................................... 2
Battery ....................................................................................... 4
Skills of Qualified Personnel ...................................................... 5
System Solution .................................................................. 6
Product Introduction ................................................................... 6
2.1.2 Energy Meter............................................................................. 8
On-grid System .......................................................................... 9
Off-grid System ........................................................................ 12
Retrofitting the Existing PV System ......................................... 14
Function Description ........................................................ 15
Safety Function ........................................................................ 15
3.1.1 Protection ................................................................................ 15
3.1.2 Earth Fault Alarm .................................................................... 15
Energy Conversion and Management ...................................... 15
3.2.1 Power Derating ....................................................................... 16
3.2.2 External Demand Response ................................................... 17
3.2.3 Reactive Power Regulation ..................................................... 18
3.2.4 Active Power Response .......................................................... 18
3.2.5 Load Control ........................................................................... 19
Battery Management ................................................................ 19
3.3.2 Charge Management .............................................................. 20
3.3.3 Discharge Management .......................................................... 22
3.3.4 Maintenance Management ...................................................... 22
3.3.5 Battery Temperature Sensor (PT1000) .................................... 23