III
Contents
About This Manual ..................................................................... I
1 Safety ....................................................................................1
2 System Solution ..................................................................6
2.1 PV Energy Storage System (PV ESS) .................................... 11
2.2 Retrofitting the Existing PV System ......................................... 13
3 Function Description ........................................................15
3.1 Safety Function ....................................................................... 15
3.1.1 Protection ................................................................................ 15
3.1.2 Earth Fault Alarm ..................................................................... 15
3.1.3 SPI and Auto Test (Italy only) .................................................. 15
3.2 Energy Conversion and Management ..................................... 16
3.2.1 Power Derating........................................................................ 16
3.2.2 Regular Operational Voltage Range ........................................ 17
3.2.3 Regular Operational Frequency Range ................................... 19
3.2.4 Active Power Regulation.......................................................... 20
3.2.5 Reactive Power Regulation ..................................................... 21
3.2.6 Load Control ............................................................................ 22
3.3 Battery Management ............................................................... 22
3.3.1 Charge Management ............................................................... 23
3.3.2 Discharge Management .......................................................... 24
3.3.3 Maintenance Management ...................................................... 24
3.3.4 Battery Temperature Sensor (PT1000) .................................... 25
3.4 Communication and Configuration .......................................... 25
4 Unpacking and Storing .....................................................26
4.1 Unpacking and Inspecting ....................................................... 26
4.2 Delivery Contents .................................................................... 27
4.3 Storing the Inverter .................................................................. 28
5 Mechanical Mounting ........................................................29