The Sungrow SG125CX-P3 is a 125 kW three-phase string inverter developed to meet the requirements of commercial and industrial (C&I) photovoltaic systems, where design flexibility, efficiency, safety and ease of management are key factors.
The Sungrow solution combines 10 independent MPPTs, an input current of up to 40 A per MPPT, a maximum efficiency of 98.5% and advanced protection and diagnostic functions. These features enable PV professionals to manage medium- to large-scale system configurations and integrate the latest generation of high-power PV modules.
125 kW and 10 MPPTs for greater design flexibility
On the DC side, the Sungrow SG125CX-P3 supports a maximum recommended PV input power of 198 kWp, with a maximum input voltage of 1,100 V and an MPPT operating voltage range from 180 to 1,000 V.
The 10 independent MPPTs, each supporting two strings, provide greater flexibility in managing PV arrays with different orientations, irradiation conditions or system configurations.
The maximum input current reaches 40 A per MPPT, supporting compatibility with the high-power, high-current PV modules increasingly used in C&I installations.
High efficiency even at high temperatures
The SG125CX-P3 achieves a maximum efficiency of 98.5% and a European efficiency of 98.3%.
One of its distinctive features is the SG ECOOLING® forced-air cooling system, designed to maintain high performance even under demanding ambient temperature conditions.
According to Sungrow, the inverter can operate at full power at temperatures of up to 50 °C, an important advantage for commercial and industrial PV systems installed in high-temperature environments, where thermal management can have a significant impact on overall system performance.
Simplified diagnostics and maintenance
For C&I systems, reducing the time required for Operation & Maintenance (O&M) activities can have a direct impact on operating costs and system availability.
The Sungrow SG125CX-P3 integrates advanced string and insulation monitoring functions, helping to identify potential faults and streamline troubleshooting activities.
It also features a self-cleaning system designed to reduce the need for manual cleaning and simplify long-term maintenance.
The iSolarCloud platform also enables system monitoring and management, centralising key operational information.
Advanced DC-side safety
Particular attention has also been paid to PV system safety.
The SG125CX-P3 inverter integrates AFCI 3.0+ for arc-fault detection and intelligent string-level disconnection, designed to quickly identify and isolate potential faults on the DC side.
Integrated protection functions also include overvoltage, reverse polarity, short-circuit and ground fault protection, together with string current monitoring and PID Recovery.
Key features of the Sungrow SG125CX-P3
The inverter’s main features include:
- 125 kW rated AC power;
- 10 MPPTs with up to 40 A per MPPT;
- maximum efficiency of 98.5%;
- IP66 protection rating and C5 anti-corrosion rating;
- advanced diagnostic, safety and system management functions.
This combination is designed to simplify the design, installation and management of next-generation C&I photovoltaic systems.
Sungrow SG125CX-P3 for C&I photovoltaic systems
With the SG125CX-P3, Sungrow further develops its string inverter offering for the commercial and industrial segment, focusing on three key aspects for new PV projects: compatibility with high-current modules, intelligent system management and advanced safety.
The 10 MPPTs and input current of up to 40 A per MPPT provide greater flexibility during system design, while the integrated diagnostic and protection functions help simplify system management throughout its entire lifecycle.
For many years, VP Solar has been supplying Sungrow solutions for professional photovoltaic systems. Installers, designers and EPC contractors can contact their sales representative for further information and quotations.
Sungrow SG125CX-P3: 125 kW three-phase string inverter
The Sungrow SG125CX-P3 125 kW three-phase string inverter is designed for commercial and industrial (C&I) photovoltaic systems, featuring 10 independent MPPTs and support for high-current PV modules.
- Rated AC power: 125 kW
- 10 MPPTs, 2 strings per MPPT
- Maximum input current: 40 A per MPPT
- Maximum efficiency: 98.5%
- Maximum DC voltage: 1,100 V
- IP66 protection rating and C5 anti-corrosion rating
- AFCI 3.0+ protection and intelligent string-level disconnection
Datasheet English
Complete documentation
The Sungrow SG125CX-P3 is a 125 kW three-phase string inverter designed for C&I photovoltaic systems, supporting a maximum recommended PV input power of 198 kWp. Its architecture, featuring 10 independent MPPTs and 2 string inputs per MPPT, enables flexible PV array management, including installations with different orientations or irradiation conditions.
The maximum input current of 40 A per MPPT enables compatibility with the latest generation of high-power, high-current PV modules. The MPPT operating voltage range is 180 to 1,000 V, with a maximum DC input voltage of 1,100 V.
The inverter achieves a maximum efficiency of 98.5% and incorporates the SG ECOOLING® forced-air cooling system, designed to provide effective thermal management even in demanding C&I applications.
In terms of safety, the SG125CX-P3 integrates AFCI 3.0+, intelligent string-level disconnection, DC reverse polarity protection, AC short-circuit protection and ground fault protection, as well as Type I+II SPDs on the DC side and Type II SPDs on the AC side.
String monitoring and insulation diagnostic functions help identify potential faults and simplify maintenance activities. System operation and monitoring can be managed via the Sungrow iSolarCloud platform.
The IP66 protection rating and C5 anti-corrosion rating make the Sungrow SG125CX-P3 suitable for outdoor installations and environments with demanding operating conditions.
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