SMA Sunny Island 4548-US - Page 72

8 Initial Start-Up SMA America, LLC
72 SI4548_6048-US-TB_en-13 Technical description
8. Reconnect the cables of the battery current sensor correctly as displayed in the graphic.
Make sure the lines have the correct polarity when doing this.
– BatCur+ to terminal 1
– BatCur– to terminal 2
9. Start the Sunny Island (see Section 9.1 "Switching On", page 73).
10. Check the current direction: "120.06 TotBatCur"
Current direction: Discharging the battery
• No generator/grid connected
• Loads are being supplied
The measured value of the battery current is positive.
Current direction: Charging the battery
• Generator/grid connected
• Loads not being/being marginally supplied
• Battery is being charged
The measured value of the battery current is negative.