X1/X3-FIT G4 and X1-AC — battery inverters for AC coupling 3–15 kW
Country: China · Model: X1/X3-FIT G4, X1-AC
The X1/X3-FIT G4 and X1-AC battery inverters of 3 to 15 kW add a high-voltage storage to an already working PV plant. The grid inverter stays in place, and the battery is connected on the AC side.
- Power
- X3-FIT G4 6–15 kW; X1-FIT G4 3.7–7.5 kW; X1-AC 3–5 kW
- Peak power
- up to 22.5 kVA, 10 s (X3-FIT)
- Switchover
- < 10 ms
- Ingress protection
- IP65
Technical specifications
| Power | X3-FIT G4 6–15 kW; X1-FIT G4 3.7–7.5 kW; X1-AC 3–5 kW |
|---|---|
| Peak power | up to 22.5 kVA, 10 s (X3-FIT) |
| Switchover | < 10 ms |
| Ingress protection | IP65 |
| Parallel operation | up to 150 kW (FIT G4) |
| Customs codes (for reference) | |
| HS code | 8504.40 |
| UKTZED code (Ukraine) | 8504408400 (≤7.5 kVA); 8504408800 (>7.5 kVA) |
| CN code (EU) | 85044087 |
Specifications are taken from the manufacturer’s technical documentation. Updated . Customs codes are for reference only; the final code is determined at customs declaration for the specific model.
Description
The three-phase X3-FIT G4 has ratings of 6–15 kW, the single-phase X1-FIT G4 3.7–7.5 kW, and the X1-AC covers small systems of 3–5 kW. The inverter is connected to the same AC bus as the existing grid inverter, charges the battery with surplus generation and returns energy in the evening. When the grid is switched off, the house moves to backup in less than 10 ms. The X3-FIT holds a peak power of up to 22.5 kVA for 10 s, so starting a pump or an air conditioner does not drop the backup line. FIT G4 units can be connected in parallel up to 150 kW, which opens up retrofitting of commercial PV plants. The IP65 enclosure is mounted on an outside wall next to the existing inverter.
How to choose
The type is chosen by the phase count of the input, and the power by the load that must be held from the battery. For a single-phase house take the X1-FIT G4 or X1-AC, for a three-phase house the X3-FIT G4. If the PV plant is only being designed, it is more rational to install the hybrid X3-HYBRID G4 of 5–15 kW right away, which combines the grid and battery parts in one enclosure.
Request a price and lead time
X1/X3-FIT G4 and X1-AC — battery inverters for AC coupling 3–15 kW. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
Can a battery be added to a PV plant without replacing the grid inverter?
Yes, the X1/X3-FIT G4 and X1-AC of 3–15 kW are intended for this. They are connected on the AC side in parallel with the inverter that already works.
What is the peak power of the X3-FIT G4?
Up to 22.5 kVA for 10 s, which is enough to start pump and compressor motors.
How does the X1-FIT G4 differ from the X1-AC?
Both are single-phase, but the X1-FIT G4 has 3.7–7.5 kW, and the X1-AC is designed for 3–5 kW for small systems.
How many X3-FIT G4 units can be connected in parallel?
Parallel operation of FIT G4 is supported up to a total of 150 kW, so the series is also suitable for commercial sites.
Can the X3-FIT G4 be installed outdoors?
Yes, the enclosure has an IP65 rating, and the inverter is mounted on an outside wall under a canopy.
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Need a price, lead time or replacement?
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