SMC Networks Sunny Mini Central SMC 5000A - Manual (Page 31)

SMA Technologie AG Electrical Connection
Installation Guide SMC50A_60A-IEN073320 Page 31
Despite the fact that these faults are very unlikely, and extremely rare in practice,
preventative measures must still be taken. After all, these types of faults carry a high
potential for damage and danger, since all modules in the affected string may be
damaged and the local heating may also cause secondary damage.
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+ L
N
Reverse current into the faulty string = Total current of the remaining strings