SMA SUNNY ISLAND 4548-US Operating Manual page 74

8 Commissioning
8. Reconnect the conductors of the battery current sensor correctly as displayed in the graphic.
Make sure the insulated conductors have the correct polarity.
– BatCur+ to terminal 1
– BatCur– to terminal 2
9. Start the Sunny Island (see Section 9.1 "Switching On", page 75).
10. Check the current direction: "120.06 TotBatCur"
Current direction: Discharging the battery
• No generator/utility grid connected
• Loads are being supplied
The measured value of the battery current is positive.
Current direction: Charging the battery
• Generator/utility grid connected
• Loads are not/marginally supplied
• Battery is being charged
The measured value of the battery current is negative.
74 SI4548-6048-US-BE-en-21
SMA Solar Technology America LLC
Operating Manual