Huawei SUN2000 Series Quick Manual page 14

Wiring rules:
1. A maximum of one set of Y-branch connectors can be used for each MPPT.
2. The PV+ on the solar inverter side must be connected to the PV+ on the PV string side, and the
PV– on the solar inverter side must be connected to the PV– on the PV string side.
3. Preferentially and evenly connect the Y-branch connectors to the MPPTs controlled by DC
SWITCH 2 or DC SWITCH 3.
Connecting Y-branch connectors to the solar inverter
Connecting Y-branch connectors to the PV strings
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