The SUN5000 receives inputs from 21 PV strings. The inputs are grouped into 7 MPPT circuits inside the inverter to track the maximum power point of the PV strings. The DC power is converted into three-phase AC power through an inverter circuit. Surge protection is supported on both the DC and AC sides. [pdf]
[FAQS about How many strings can be connected to a Huawei 150kw inverter at most ]
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