Sunny Island 4500
Installation & Operating Instructions
BWRI45-13-EE0304
- 4 -
SMA Regelsysteme GmbH
Contents
1
Introduction ........................................................................................................ 10
1.1
About these instructions............................................................................ 12
1.2
What to do in case of transport damages? ............................................... 12
1.3
General Safety Instructions....................................................................... 13
2
Device Description............................................................................................. 14
2.1
Operating Modes....................................................................................... 15
2.1.1
Grid-Forming Operation (RUN_U)........................................................ 16
2.1.2
Grid-Tied Operation (RUN_I)................................................................ 18
2.1.3
Droop-mode operation (RUN_U, RUN_UEXT) .................................... 19
2.1.4
Overload Behavior................................................................................ 21
2.2
Battery Management................................................................................. 23
2.2.1
Charging Methods ................................................................................ 24
2.2.2
Battery States ....................................................................................... 26
2.2.3
Low Battery Load Mode........................................................................ 29
2.2.4
Failure of Individual Cells ..................................................................... 30
3
Installation ......................................................................................................... 31
3.1
Mounting Accessories Included in Delivery............................................... 31
3.2
Placement of the Sunny Island ................................................................. 33
3.3
Electric Connection ................................................................................... 38
3.3.1
Preparing the Connection..................................................................... 38
3.3.2
Cable Connections ............................................................................... 40
3.4
Examples for Connection .......................................................................... 43
3.4.1
Connection to Ground .......................................................................... 43
3.4.2
Connection of the battery ..................................................................... 45
3.4.3
Connection of Battery Temperature Sensor ......................................... 47
