Grid connection and phases
Check the approved power, the distribution of loads and the permitted behaviour under phase imbalance.
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For large homes and commercial projects, a three-phase inverter is chosen based on the grid connection, load distribution, PV array and the supported high- or low-voltage battery.
Phase balancing, protection devices and backup power are part of the design, not simply a matter of choosing the rated power.
Make an informed choice
Check the approved power, the distribution of loads and the permitted behaviour under phase imbalance.
View optionsCalculate voltages and currents for the minimum and maximum design temperatures.
View optionsConfirm the battery architecture, the discharge power and the loads supported in EPS mode.
View optionsSelection from our shop
Compare the available options and open the product page for power, stock and current specifications. Compatibility is validated for the system as a whole.
Before you order
Use the same list of criteria for each model and keep the documentation for the final combination.
Talk to a consultant: 0723 172 359Clear answers
These answers explain the commercial and technical limits of the choice. The product specification and the confirmed quote remain decisive.
In projects with a three-phase grid connection, higher power ratings or loads distributed across three phases. The final choice must be aligned with the grid approval, the wiring scheme and the approved power.
Do not assume so. The number of phases and the power available at the backup output are specific to the model and the installation scheme.
No. Some models use high-voltage batteries, others low-voltage ones. The voltage, BMS and protocol must appear in the approved configurations.
MPPTs allow groups of panels to be managed separately. They are useful when orientations differ, but each string must stay within the voltage and current range of its input.
Check before you pay
Send us your consumption, grid connection details and the products you already have. We will confirm what needs to be checked in the commercial configuration.