X3-FORTH / FORTH PLUS / FORTH G3 — three-phase grid inverters 75–150 kW
Country: China · Model: X3-FORTH / FORTH PLUS / FORTH G3
The X3-FORTH series combines three-phase grid inverters from 75 to 150 kVA in three versions. They work on the roofs of factories and logistics centres and at small ground-mounted PV plants.
- Power
- 75–125 kVA (FORTH), 120–150 kVA (PLUS), 80–125 kVA (G3)
- MPPT
- 12 (FORTH), 6 (PLUS, G3)
- Current per MPPT
- 32 / 65 / 52 A
- MPPT range
- 180–1000 V
Technical specifications
| Power | 75–125 kVA (FORTH), 120–150 kVA (PLUS), 80–125 kVA (G3) |
|---|---|
| MPPT | 12 (FORTH), 6 (PLUS, G3) |
| Current per MPPT | 32 / 65 / 52 A |
| MPPT range | 180–1000 V |
| Ingress protection | IP66 |
| Weight | 72–108 kg |
| Customs codes (for reference) | |
| HS code | 8504.40 |
| UKTZED code (Ukraine) | 8504408800 (>7.5 kVA) |
| CN code (EU) | 85044084 |
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 base FORTH of 75–125 kVA has 12 MPPT inputs of 32 A, so even a roof with a complex geometry can be split into separate trackers. The FORTH PLUS of 120–150 kVA and the G3 of 80–125 kVA have 6 MPPT inputs each, with a current of 65 and 52 A respectively, for modules with a high operating current. The MPPT range of all versions is 180–1000 V. The built-in I-V curve diagnostics remotely records the characteristic of each string, and dirty or damaged strings are found without a site visit with a tester. At night the inverter compensates reactive power, helping to keep the power factor at the enterprise input. The PLUS version is designed to operate at altitudes up to 5000 m. The enclosure is IP66 and the weight is 72–108 kg depending on the model, so a frame or a reinforced wall is prepared for mounting.
How to choose
The first criterion is the number and orientation of strings. For a roof with many slopes the FORTH with 12 trackers is better, and for a uniform field with powerful modules the PLUS or G3 with 6 trackers is more suitable. High-altitude sites in the mountains are a task for the PLUS. When more than 150 kVA is needed in one enclosure, move to the X3-GRAND HV of 300–350 kVA with a DC input up to 1500 V.
Request a price and lead time
X3-FORTH / FORTH PLUS / FORTH G3 — three-phase grid inverters 75–150 kW. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
How does the X3-FORTH differ from the FORTH PLUS and FORTH G3?
The FORTH has 75–125 kVA and 12 MPPT inputs of 32 A, the PLUS has 120–150 kVA and 6 MPPT inputs of 65 A, the G3 has 80–125 kVA and 6 MPPT inputs of 52 A.
At what altitude can the X3-FORTH PLUS operate?
The manufacturer specifies operation at altitudes up to 5000 m above sea level, so this version is used for high-mountain sites.
How does I-V curve diagnostics work in the X3-FORTH inverters?
The inverter scans the current-voltage characteristic of each string and shows deviations, so shading, degradation or a break is found remotely.
Why does a grid inverter need reactive power compensation at night?
At night the PV plant does not generate, but the inverter supplies reactive power and maintains cos φ at the input, which reduces reactive energy flows from the grid.
How much does an inverter of the X3-FORTH series weigh?
From 72 to 108 kg depending on the version, so the brackets and the frame are calculated for such a load.
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