--- title: "Sungrow SG50CX-P2 Grid-tie Inverter: Specs & Datasheet | ComparePV" description: "Sungrow SG50CX-P2 50 kW grid-tie inverter. Specs: 98.3% European efficiency, 4 MPPT, 1100 V max DC input, 41.0 kg." source: "https://comparepv.com/inverter/sungrow-sg50cx-p2" updated: 2026-01-16 --- # Sungrow SG50CX-P2 ## Identity - **Manufacturer:** Sungrow - **Model:** SG50CX-P2 - **Series:** SG36/40/50CX-P2 - **Rated AC power:** 50 kW - **Type:** Grid-tie - **Phases:** Three-phase ## How it compares Compared against 243 inverters from 30 to 100 kW. Ranks are within that class. | Measure | This inverter | Class median | Standing | Rank in class | | --- | --- | --- | --- | --- | | European efficiency | 98.3% | 98.2% | Typical | 39 | | MPPT trackers | 4 | 4 | Typical | 34 | | Max DC input voltage | 1100 V | 1100 V | Typical | 3 | | Weight per kW | 0.8 | 1.1 | Strong - top 20% | 45 | | Warranty | - | 5 yrs | | | ## Specification ### AC output - **Rated AC power:** 50 kW - **Max AC power:** 55.00 kW - **Max apparent power:** 55.00 kVA - **Phases:** Three-phase - **Nominal AC voltage:** 400 V - **Max AC current:** 83.6 A - **Grid frequency:** 50 Hz - **Power factor:** >0.99 at rated / 0.8 leading – 0.8 lagging - **Harmonic distortion (THD):** 3.0 % ### PV input - **Max DC input power:** 70.00 kW - **Max DC voltage:** 1100 V - **MPPT voltage range:** 160 to 1000 V - **Start-up voltage:** 200 V - **MPPT trackers:** 4 - **Max input current per MPPT:** 30.0 A - **Max short-circuit current per MPPT:** 40.0 A ### Efficiency - **European efficiency:** 98.3 % - **Max efficiency:** 98.5 % ### Physical - **Dimensions:** 575 × 645 × 245 mm - **Weight:** 41.0 kg - **Enclosure:** IP66 - **Cooling:** forced-air - **Operating temperature:** -30 to 60 °C - **Max humidity:** 100 % - **Max altitude:** 4000 m ### Connectivity and protection - **Interfaces:** Wi-Fi, Ethernet, Bluetooth, Display - **Protocols:** RS485, WLAN (optional), Ethernet (optional), Bluetooth + App - **Protection:** AFCI, DC switch, Surge protection ### Warranty and certificates - **Certifications:** IEC 62109, IEC 61727, IEC 62116, VDE-AR-N 4105:2018, IEC 61000-6-3, EN 50549-1, CEI 0-21 2019, CEI 0-16 2019, VDE 0126-1-1/A1 VFR 2019, UTE C15-712-1:2013, UNE 206007-1/RD 1699, UNE 217002, G99, IEC 63027 ### Pros - **98.3% European Efficiency - Premium Class** - A European efficiency (EU) rating of 98.3% against a peak of 98.5% places the series firmly among the top-tier commercial inverters in the 36-50 kW segment. By comparison, the Huawei SUN2000-50KTL-M3 reaches a comparable level, while several lesser-known platforms in this range stall at 97.5-97.8% EU - a gap that translates to several hundred additional kWh per year in a typical 200 kWp installation. - **4 MPPT × 3 Strings = 12 DC Inputs** - Four independent MPPT trackers with an operating voltage range of 160-1000 V (max. input 1100 V) support up to 12 DC string inputs in total (3 per MPPT). The closest competitor - the Huawei SUN2000-50KTL-M3 - offers 4 MPPTs with only 8 string inputs, making the CX-P2 considerably more flexible for varied rooftop layouts and multi-orientation C&I installations. - **IP66 Enclosure + Corrosion Category C5** - The IP66-rated enclosure eliminates any risk of dust ingress or water penetration, while the C5 corrosion resistance category (per ISO 12944) permits installation in chemically aggressive environments - including coastal sites, food-processing facilities, and livestock farms. Many competing commercial inverters at a comparable price point offer only C3-C4 corrosion protection. - **AFCI 2.0 with 99.9% Detection Accuracy** - The built-in AFCI 2.0 function detects and distinguishes genuine arc faults from nuisance trips with 99.9% accuracy - a performance verified beyond the requirements of UL 1699B-2018 (80 m cable, 16 A current, 2.5 s detection time). This represents a significant safety advantage for industrial and commercial installations where fire risk carries serious insurance implications. - **Passive Cooling - No Moving Parts** - The inverter operates fanlessly through natural heatsink convection, eliminating the most common source of field failures and reducing self-generated acoustic output to 0 dB(A). For facility managers, this means lower lifecycle service costs and no risk of filter degradation over the system's operational life. ## About this series The Sungrow SG36/40/50CX-P2 series are three-phase grid-tie inverters (on-grid) designed for commercial and industrial installations, where stable operation, easy maintenance, and a high energy yield are crucial. Their key advantage is the **four independent MPPTs**, which allow efficiently managing several strings with different orientations or inclinations, and minimize losses due to partial shading or varied modules in the field. In practice, this helps maintain high yields under real, variable operating conditions. It's worth noting the **high European efficiency** - this means better performance in typical Polish climate conditions, not just ideal measurement points. Available are **communication and monitoring options** via RS485, as well as Bluetooth, and WiFi and Ethernet modules, facilitating remote diagnostics and control via an app. The design is suitable for outdoor mounting thanks to the **IP66 enclosure**, and safety is supported by surge protectors and arc fault detection (AFCI) functions, among other features. The series complies with requirements including EN 50549, and the standard **5-year warranty** aligns with projects where predictable operational costs are important. ## Questions ### What is the purpose of the 4 independent MPPTs in the Sungrow SG36/40/50CX-P2 series, and when do they provide real benefit? Each of the 4 MPPT trackers operates independently, allowing the inverter to manage up to 8 strings connected at different tilt angles or orientations. In practice, this means that if part of a roof is shaded in the morning and another section in the afternoon, each string reaches its own optimum operating point without degrading the performance of the others. This is particularly valuable in installations on industrial halls or multi-pitch roofs where it is impossible to orient all modules identically. ### What is the European efficiency of the Sungrow SG36/40/50CX-P2 inverters, and what does it mean for Polish operating conditions? The series achieves a European efficiency of 98.3%, with a peak efficiency of 98.5%. European efficiency is calculated using a weighted irradiance profile representative of Central European climates, accounting for both sunny and overcast days. This means the stated figure genuinely reflects annual energy losses under Polish climate conditions rather than results obtained only under ideal laboratory conditions. ### What warranty does the Sungrow SG36/40/50CX-P2 series carry, and can it be extended? The standard manufacturer's warranty for the SG36/40/50CX-P2 series is 5 years. Sungrow offers warranty extension options depending on the country and distributor, with coverage available up to 10 years. For commercial installations, it is worth verifying the terms with the local distributor, as a longer warranty directly improves the predictability of operating costs over the full investment payback period. ### Can Sungrow SG36/40/50CX-P2 inverters be installed outdoors? Yes, the SG36/40/50CX-P2 series features an IP66-rated enclosure, providing complete protection against dust ingress and powerful water jets. In addition, the optional C5 anti-corrosion rating enables installation in high-humidity environments or at facilities located near the coast. The inverters can be safely mounted on the exterior walls of production halls, warehouses, or other industrial structures without requiring an additional protective enclosure. ### What monitoring and communication options does the Sungrow SG36/40/50CX-P2 series offer? The series supports multiple communication interfaces: RS485 for integration with SCADA systems or energy meters, Bluetooth for configuration and rapid diagnostics via smartphone, and optionally WiFi or Ethernet modules for continuous online monitoring. Plant data can be tracked through the iSolarCloud application. For remotely managed installations or those requiring reporting for energy settlement purposes, this represents a significant operational advantage. ### Are Sungrow SG36/40/50CX-P2 inverters compatible with modern PV modules rated above 500 W? Yes, the SG36/40/50CX-P2 series is designed to work with high-power PV modules available on the market. Each string supports up to 30 A of input current, and the MPPT voltage range spans 160-1000 V, enabling string configurations using modules rated at 500 W and above. This is an important consideration when designing new commercial installations, as selecting higher-power modules shortens the payback period and reduces overall BoS installation costs. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/inverters/ds-20231219-sg36-40-50cx-p2-datasheet-v4-en-1-4e82555227c5.pdf) ## Alternatives | Inverter | Rated AC | Euro efficiency | MPPT | Weight | Difference | | --- | --- | --- | --- | --- | --- | | [Huawei SUN2000-50KTL-JPM0](https://comparepv.com/inverter/huawei-sun2000-50ktl-jpm0) | 50 kW | 98.6% | 6 | 71.0 kg | +2 MPPT, 30.0 kg heavier | | [Huawei SUN2000-50KTL-M0](https://comparepv.com/inverter/huawei-sun2000-50ktl-m0) | 50 kW | 98.5% | 6 | 74.0 kg | +2 MPPT, 33.0 kg heavier | | [Solis-50K-HV](https://comparepv.com/inverter/ginlong-solis-solis-50k-hv) | 50 kW | 98.5% | 4 | 61.0 kg | 20.0 kg heavier | | [Growatt MAX 50KTL3 LV](https://comparepv.com/inverter/growatt-max-50ktl3-lv) | 50 kW | 98.4% | | 82.0 kg | 41.0 kg heavier | | [Sungrow SG50CX](https://comparepv.com/inverter/sungrow-sg50cx) | 50 kW | 98.4% | | 62.0 kg | 21.0 kg heavier | | [Solis-50K](https://comparepv.com/inverter/ginlong-solis-solis-50k) | 50 kW | 98.4% | 4 | 63.0 kg | 22.0 kg heavier | | [SOFAR 50000TL](https://comparepv.com/inverter/sofar-solar-sofar-50000tl) | 50 kW | 98.3% | 3 | 68.0 kg | -1 MPPT, 27.0 kg heavier | | [Fronius Tauro 50-3-D (Direct)](https://comparepv.com/inverter/fronius-international-fronius-tauro-50-3-d-direct) | 50 kW | 98.3% | | 92.0 kg | 51.0 kg heavier | --- Source: https://comparepv.com/inverter/sungrow-sg50cx-p2