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Off-grid Port to Retrofit the Existing PV System
figure 2-6 Off-grid Port to Retrofit the Existing PV System
The off-grid port retrofits the existing PV system in order to maximize the use of PV energy
by allowing the PV inverter to work even when off-grid.
The AC terminal of the PV inverter and the BACK-UP terminal of the hybrid inverter are con-
nected in parallel.
The PV inverter power cannot exceed the nominal power of the hybrid inverter (if it is a sin-
gle-phase PV inverter, the PV inverter power cannot exceed the single-phase nominal power
of the three-phase hybrid inverter).
Before retrofitting the existing PV system to an off-grid port, the "Frequency Shift Power
Control" parameter needs to be enabled. For details, please refer to "8.10.14 Frequency
Shift Power Control".
Note:
1 In zero-export scenario, the hybrid inverter can only ensure no power exported to grid it-
self but does not ensure zero export for the PV inverter. Please contact the PV inverter
manufacturer for its zero-export solution.
2 PV modules for hybrid inverter are optional.
2 Product Description User Manual
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