Electrical Connection SMA Solar Technology AG
34 SI5048-TB-TEN110340 Technical Description
6.2.3 Cable Protection
In addition to the internal DC circuit breaker, install a separate, external fuse as close as possible to
the battery. Install a suitable fuse link for the fuse according to the maximum specified DC currents
(e.g. NH1 with 250 A).
6.2.4 Connection
There is a "DC —" and a "DC +" terminal provided for each tube terminal lug (max. 70 mm²) for the
battery feed cables in the Sunny Island.
DANGER!
Risk of lethal electric shock. Death or serious burns.
If no external cable protection is available, observe the following:
• Lay the DC cables so that they are ground-fault and short-circuit-proof.
• If there are short-circuit currents of over 10000 A, use an additional thermal fuse.
DANGER!
Danger to life due to high voltages. Death or serious burns.
• Connect the external fuse and the battery cable to the battery only after all
installation work has been completed.
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