SMA Sunny Island 4248U, Installation & Operating Instructions Manual

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SI4248U Manual Installation Manual
35
DC Wiring
WARNING:
To reduce the risk of shock, injury, or equipment damage, make
certain that the internal inverter DC disconnect has been switched OFF and any
external DC disconnect switched OFF or the DC battery cables are disconnected
from the battery before attempting to attach or remove the DC input cables to the
inverter.
NOTE: Tools used for tightening the DC input terminals may contact the chassis.
No damage will result if the above warning is heeded and the inverter has not
been powered on for at least five minutes.
NOTE: The DC cables that supply power to the Sunny Island 4248U should be
connected directly between the inverter and the battery bank only (via additional
disconnect and over-current protection if required). The DC power circuit should
not be, nor supply power to, a branch DC circuit.
Connect the Positive DC cable, and then the Negative DC cable to the appropriate terminals.
Figure 1-18 DC Power Wiring
Shield C
AN_L
C_GND C
AN_H