SMA Solar Technology AG
Electrical Connection of the Sunny Backup 2200
Technical Description
SBU2200-TEN083320
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7.2.2 BatFuse A.01 (DC fuse)
The BatFuse A.01 DC fuse is installed between the Sunny Backup 2200 and the battery. You can
connect up to two batteries to the BatFuse A.01. The capacity of both battery sets may not exceed
3000 Ah.
Use a cable cross-section of 35 mm². The maximum current-carrying capacity is 125 A.
How to connect the BatFuse A.01:
1. Remove the housing cover.
2. Pull the NH fuse plugs from the bracket using the
NH handle (as per VDE 0680-4).
DANGER!
Risk of lethal electric shock.
• Only qualified electricians are permitted to install the electrical connections.
• Make sure the cross-section of the cables is adequate and the polarity of the cables
leading to the Sunny Backup 2200 and the battery is correct.
• Insert the NH fuse into the BatFuse A.01 bracket only after all installation work in the
backup system has been completed (see pages 7 to 9 ).
Information
The battery cables should be as short as possible. Long cables and insufficient cable
diameters reduce the system efficiency as well as the overload capabilities.
Do not lay the battery feed cables under plaster or in armored plastic pipes. Since large
currents flow through them, the battery cables can become very warm.
