The Three-Phase GST Series Hybrid Inverter coordinates PV generation, a 48 V battery, utility input and three-phase loads. Three output ratings serve larger homes, workshops and small commercial systems that require balanced three-phase supply. Dual MPPT inputs, selectable charging priorities, battery-less output capability, cloud monitoring and parallel operation support flexible system design and controlled backup power.
Projects with a 400 V three-phase load system, higher PV capacity and a compatible 48 V battery architecture.
Key product advantages
400 V AC output supports compatible three-phase residential and light-commercial distribution systems.
Two PV trackers support array segmentation within the specified voltage, current and power limits.
Mains Priority, PV Priority, Hybrid Mains & PV and PV Only adapt the system to different supply conditions.
Battery-less output, PV startup with load and battery activation functions are stated for the platform.
Built-in RS485, CAN, USB and dry contact combine with optional Wi-Fi or 4G connectivity.
Up to nine compatible units can be paralleled, subject to the approved system configuration.
Model range
17 kW peak · 2 MPPT · 13.2 kW PV array · 200 A maximum mixed charging
21 kW peak · 2 MPPT · 15 kW PV array · 220 A maximum mixed charging
25 kW peak · 2 MPPT · 18 kW PV array · 240 A maximum mixed charging
Technical parameters
Select inverter power from the maximum simultaneous three-phase load and starting demand. Check the PV array separately against each MPPT's 200-650 V range, 800 V open-circuit limit, 22 A input-current limit and model-specific array-power limit. Battery capacity and BMS current must support the required charging, discharge and backup duration.
A nominal 48 V battery is not automatically compatible. Confirm the 40-60 V operating range, charge/discharge current, CAN or RS485 protocol and approved BMS communication.
Typical applications
Three-Phase System Design Notes
Line voltage and phase voltage are not interchangeable
The inverter provides 400 V three-phase AC output. The catalogue states an acceptable mains phase-voltage range of 170–280 V and line-voltage range of 305–485 V. Protection settings, meters, contactors and downstream equipment must be selected for the actual three-phase distribution system.
Balance single-phase loads across the three phases
A three-phase inverter rating is the total system rating, not an unrestricted allowance on one phase. During design, list L1, L2 and L3 loads separately, check the largest phase demand and distribute single-phase appliances as evenly as practical. Confirm the permitted phase-unbalance limit for the final ordered model.
Use the two MPPT channels as independent array groups
Each array group should be checked against the 200–650 V MPPT range, 800 V maximum open-circuit voltage and 22 A input-current limit. Put strings with materially different orientation, tilt or shading on separate MPPT channels.
Packing, Transport and Site Handling
- Keep the inverter dry and upright in its original protective packaging during transport and storage.
- Protect the enclosure, display, terminals and communication ports from impact, moisture and conductive dust.
- Check the packaging and unit for deformation or visible damage before accepting delivery.
- Use handling methods appropriate for the stated 23 kg unit weight; do not lift by cables, glands or connection covers.
- Store within −25°C to +60°C and allow the unit to acclimatize before energizing if condensation is possible.
Routine Maintenance
Review alarms and operating records, inspect ventilation paths, verify fan operation and compare the two MPPT channels for abnormal differences. After safe isolation, check AC, PV and battery terminals for looseness, heat marks or discoloration. Maintain sufficient clearance for forced-air cooling and do not expose the IP20 enclosure to rain or condensation.
Build a compatible three-phase storage system
Coordinate phase loads, PV strings, 48 V battery current, BMS communication, protection, earthing and backup circuits before final model approval.
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Send the AC supply, load schedule, PV array, battery proposal, backup requirement and destination market for technical review.
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