Sunny Boy 2500U Installation and Operator’s Manual
SB2500U-11:NE - 14 - SMA Regelsysteme GmbH
2.3.1 Preparation of the electric connection
Remove all screws (1 - 4, size M5 (see Fig. 2.6)) and take off the lid. When removing
these screws, be sure to save the special lock washers and reinstall them to properly
ground the front panel.
Fig. 2.6: Front view of the Sunny Boy 2500U
You now have the opened Sunny Boy in front of you (see Fig. 2.7) and can see the
position of components and clamps relevant for you. You will find:
• The internal grid fuse
WARNING: A defective grid fuse has to be replaced only with same types
and rating of fuse in order for continued protection against risk of fire. The
type is Littelfuse 314015 15 AMP 250V AC.
• The control system board with the socket for the Piggy Back board for the
communication
• Terminal for the AC-connection
• Terminals for the DC-connection
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