SolaX X3 Forth 80kW 3-Phase Inverter
Key benefits
- High‑power three phase string inverter for commercial and industrial PV systems where centralised, grid‑tied generation is needed.
- Up to 150% PV oversizing and 110% overloading output to help maximise yield from available roof, carport or ground‑mount area.
- Up to 12 MPPTs with two strings per tracker, supporting complex layouts, multiple orientations and partial shading on large sites.
Brief description
The SolaX X3 Forth Three Phase Inverter range is designed for large commercial and industrial projects, with models from 80kW up to 150kW. It combines a wide 180–1000Vdc MPPT range, high conversion efficiency and up to 12 MPPTs, making it suitable for expansive commercial roofs, solar carports and compact utility‑scale arrays. Built‑in export power control, remote configuration, Smart I‑V Curve Diagnosis and 24‑hour monitoring support straightforward operation and maintenance over the system lifetime.
Key features
- Maximum efficiency up to 98.6% on standard‑voltage models and up to 99.0% on medium‑voltage variants, with 99.9% MPPT efficiency.
- 180–1000Vdc MPPT voltage range, maximum 32A per MPPT and up to 46A short‑circuit current per MPPT.
- Fuse‑free design with smart string current monitoring and Smart I‑V Curve Diagnosis for easier fault finding.
- IP66 protection, Type II AC/DC surge protection as standard, with optional Type I+II SPD and AFCI for enhanced safety.
- Smart air cooling, AC terminal temperature detection and aluminium AC cable option to support long‑term, high‑load operation.
Technical specifications
DC input
| Max. PV array input power [kWp] |
120 (X3‑FTH‑80K) |
| Max. PV input voltage [V] |
1100 (all models) |
| Nominal input voltage [V]* |
580/600 (X3‑FTH‑80K) |
| Startup voltage [V] |
200 (all models) |
| MPP tracker voltage range [V] |
180~1000 (all models) |
| No. of MPP trackers |
9 (X3‑FTH‑80K) |
| Strings per MPP tracker |
2 (all models) |
| Max. PV input current per MPPT [A] |
32 (all models) |
| Isc PV array short circuit current per MPPT [A] |
46 (all models) |
AC output
| Rated AC output power [kW] |
80 (X3‑FTH‑80K) |
| Rated AC output current [A]* |
121.3/116 (80K) |
| Max. AC output apparent power [kVA] |
88 (80K) |
| Max. AC output current [A]* |
133.4/127.6 (80K) |
| Nominal AC voltage [V] |
220/380, 230/400, 3/N/PE, 3/PE (80K–125K) |
| AC voltage range [V]** |
304–480 (standard‑voltage models); 425–594 (medium‑voltage models) |
| Nominal AC frequency / AC frequency range [Hz]** |
50/60; ±5 |
| THDi (rated power) [%] |
<3 |
| Power Factor range |
0.8 leading ~ 0.8 lagging |
System data
| MPPT efficiency [%] |
99.9 |
| Max. efficiency [%] |
98.6 (X3‑FTH‑80K); |
| Ingress protection |
IP66 |
| Operating ambient temperature range [°C] |
-30~+60 (Derating above 45) |
| Max. operation altitude [m] |
4000 (Derating above 3000) |
| Relative humidity [%] |
0~100 |
| Dimensions [W×H×D] [mm] |
985×660×327.5 |
| Weight [kg] |
83 (80K/100K/110K); |
| Cooling concept |
Smart fan cooling |
| Communication interfaces |
RS485 / USB / DRM / PLC(Optional) |
| Optional monitoring dongle |
Pocket WiFi / LAN / 4G |
| Display |
LCD(16×2, optional) / LED×4 |
Protection
| Over/under voltage protection |
YES |
| DC isolation protection |
YES |
| Grid monitoring |
YES |
| DC injection monitoring |
YES |
| Residual current detection |
YES |
| Anti‑islanding protection |
YES |
| String fault detection |
YES |
| SPD (DC/AC) |
Type II / Type II |
| Arc‑fault circuit interrupter (AFCI) |
Optional |
| AC terminals over temperature detection |
YES |
| AC auxiliary power supply (APS) |
Optional |
| Power line communication (PLC) |
Optional |
Standards and certification
| Safety |
IEC/EN 62109‑1; IEC/EN 62109‑2; NB/T 32004 |
| EMC |
IEC/EN 61000; NB/T 32004 |
| Certification |
EN 50549; AS4777.2; VDE4105; IEC 61727; IEC 62116; IEC 61683; IEC 60068; EN 50530; NB/T 32004 |
| Manufacturer note |
* The two data refer to different grid voltage 220V/230V or 500V/540V; ** The AC voltage and the frequency range may vary from different country codes; V2.7 Information may be subject to modify without notice. 650.00001.00 |
Shipping
Shipping is available to the UK, Ireland, Africa, the Caribbean and worldwide. If the shipping rate is not shown at checkout, please contact us on +44 2080640335 or info@energian.co.uk for a tailored shipping quote.
UK expert support
UK expert support is available to help with system design, string configuration and grid connection checks for SolaX X3 Forth three phase inverters. For large commercial and industrial projects we recommend installation and commissioning via our trusted partners to ensure compliance with local grid codes and safe, reliable operation.
You can contact us by phone, email or live chat, or visit our office for an in‑person consultation to discuss your project requirements and preferred inverter configuration.
Documents available for download
This product requires a quantity of 3 minimum.
