Solax 125kW Three-Phase On-Grid X3-MEGA G2 IP66 Solar Inverter
Solax 125kW Three-Phase On-Grid X3-MEGA G2 IP66 Solar Inverter - Image 2
Solax 125kW Three-Phase On-Grid X3-MEGA G2 IP66 Solar Inverter - Image 3
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Solax 125kW Three-Phase On-Grid X3-MEGA G2 IP66 Solar Inverter

Solax 125kW Three-Phase On-Grid Inverter Features

  • Ultra-High Efficiency
    Delivers up to 99% peak efficiency, ensuring optimal energy conversion and exceptional performance.

  • Flexible PV Oversizing & AC Overload Capacity
    Fully supports 150% DC PV oversizing and 110% AC overloading, offering unmatched system flexibility and maximizing energy yield.

  • Advanced MPPT Architecture
    Features up to 12 individual MPPT trackers, each of which can handle 2 PV strings and a maximum of 32 A per tracker, enabling high-performance operation across varied panel setups.

  • Wide MPPT Voltage Range
    Operates across a flexible 180–1000 V DC range, compatible with many PV array designs and optimizing system adaptability.

  • High PV Input Capacity
    Certified to accommodate up to 180 kWp of PV array input, making it suitable for large-scale commercial solar projects.

  • Rugged IP66-Rated Build
    Built to withstand dust ingress and powerful water jets, this inverter is perfect for demanding outdoor environments and ensures long-term durability.

  • Comprehensive Safety & Protection
    Includes Type II SPD protection on both AC and DC sides, optional AFCI (arc-fault) support, AC terminal temperature detection, smart string current monitoring, and 24-hour operation monitoring for advanced safety.

  • Smart Energy Management & Diagnostics
    Features built-in export power control, remote configuration & firmware updates, I-V curve diagnostics, night-time reactive power compensation, and optional aluminium AC cable connections—enhancing energy efficiency and system control.

  • Intelligent Thermal Design
    Smart air cooling and improved heat dissipation techniques help reduce system weight and size by over 5%, enhancing installation ease and durability.

  • Compact & Installation-Friendly
    Despite its high-capacity output, the inverter maintains a sleek and manageable form, with dimensions of 985 × 660 × 327.5 mm and optimized physical build for streamlined deployment.

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Solax 125kW Three-Phase On-Grid X3-MEGA G2 IP66 Solar Inverter

The Solax X3-FORTH G2 125kW Three-Phase On-Grid Solar Inverter is engineered for large-scale commercial and industrial solar projects that demand maximum efficiency, flexibility, and durability. Designed with advanced technology, it offers a peak efficiency of up to 99%, ensuring minimal energy loss and maximum return on investment.

With the ability to support 150% DC PV oversizing and 110% AC overloading, the inverter adapts seamlessly to high-capacity solar arrays, making it ideal for projects where future expansion or higher yield is a priority. Equipped with up to 12 MPPT trackers, each capable of managing multiple strings with currents up to 32A, it optimizes performance even under complex shading or varied panel orientations.

Its wide 180–1000V DC operating range enhances design flexibility, while a massive 180kWp PV input capacity makes it suitable for powering large commercial installations such as factories, business centers, and solar farms. The IP66-rated enclosure ensures reliable operation in harsh outdoor environments, offering complete protection against dust and powerful water jets.

Safety and monitoring are core strengths, with Type II surge protection devices (SPD) on both AC and DC sides, optional AFCI arc-fault detection, AC terminal temperature sensing, and real-time string monitoring. These features provide both preventive protection and precise diagnostics. Intelligent functions such as export power control, I-V curve scanning, remote firmware updates, and night-time reactive power compensation ensure efficient and modern energy management.

Despite its high output, the X3-FORTH G2 maintains a streamlined design with smart air-cooling technology, reducing size and weight by over 5% compared to similar systems. This makes installation and long-term operation more manageable, while delivering industrial-grade reliability.

In short, the Solax X3-FORTH G2 125kW combines raw power with smart intelligence, standing out as a future-ready solution for businesses and solar developers who want scalable, safe, and high-performance solar energy conversion.

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DC Input

Max. PV array input power [kWp]
 165
Max. PV input voltage [V]
 1100
Nominal input voltage [V]*
 580/600
Startup voltage [V]
 200
MPP tracker voltage range [V]
 180-1000
No. of MPP trackers
 9
Strings per MPP tracker
 2
Max. PV input current per MPPT [A]
 32
Isc PV Array Short Circuit current per MPPT [A]
 46

AC Output

Rated AC output power [kW]
 110
Rated AC output current [A]*
 166.7/159.5
Max. AC output apparent power [kVA]
 121
Max. AC output current [A]*
 183.4/175.4
Nominal AC voltage [V]
 220/380, 230/400, 3/N/PE, 3/PE
AC voltage range [V]**
 304 ~ 480
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
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
Cooling concept
 Smart fan cooling
Communication interfaces
 RS485 / USB / DRM / PLC(Optional)
Optional monitoring dongle
 Pocket WiFi/LAN/4G
Display
 LCD(16×2, optional)/LEDx4

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

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