Sunny Island
Installation and Operating Instructions
BWRI45-13:EE0304
- 224 -
SMA Regelsysteme GmbH
21 List of Figures
Fig. 2.1: Sunny Island as grid-forming element.......................................................... 16
Fig. 2.2: Sunny Island with external grid-former......................................................... 18
Fig. 2.3: Frequency vs. load characteristics............................................................... 19
Fig. 2.4: Voltage vs. reactive power characteristics ................................................... 19
Fig. 2.5: Battery states with charging methods .......................................................... 25
Fig. 2.6: Battery states, states of charge and suggested switching operations ......... 26
Fig. 3.1: Mounting bracket with fastening points ........................................................ 36
Fig. 3.2: Side view of the Sunny Island with dimensions ........................................... 37
Fig. 3.3: Cable glands and terminals of the Sunny Island.......................................... 39
Fig. 3.4: Terminal strip of the Sunny Island ................................................................ 41
Fig. 3.5: Connection of battery to the Sunny Island ................................................... 46
Fig. 3.6: Connection of a temperature sensor............................................................ 47
Fig. 3.7: AC voltage connection ................................................................................. 48
Fig. 3.8: Connection of generator current and voltage measurement........................ 49
Fig. 3.9: Power loss due to the secondary circuit to the inverter................................ 50
Fig. 3.10: Connection of a (diesel) generator............................................................. 51
Fig. 3.11: Example of connection for an accelerated switch-over (generator) ........... 52
Fig. 3.12: Connection to an external utility ................................................................. 54
Fig. 3.13: Connection for an accelerated switch-over (utility) .................................... 55
Fig. 3.14: Connection to generator and utility ............................................................ 57
Fig. 3.15: Example of an accelerated switch-over (generator and utility) .................. 58
Fig. 3.16: Connection of a battery room fan and electrolyte pump ............................ 59
Fig. 3.17: Connection of an additional load (“dump load“) ......................................... 60
Fig. 3.18: Connection to an „ecopower Mini-BHKW“ ................................................. 61
