--- title: "Sungrow SG33T-P2-CN Grid-tie Inverter: Specs & Datasheet | ComparePV" description: "Sungrow SG33T-P2-CN 33 kW grid-tie inverter. Specs: 98.3% European efficiency, 3 MPPT, 1100 V max DC input, 25.0 kg." source: "https://comparepv.com/inverter/sungrow-sg33t-p2-cn" updated: 2026-01-16 --- # Sungrow SG33T-P2-CN ## Identity - **Manufacturer:** Sungrow - **Model:** SG33T-P2-CN - **Series:** SG30-33T-P2-CN - **Rated AC power:** 33 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 | 3 | 4 | Weak - bottom 15% | 82 | | Max DC input voltage | 1100 V | 1100 V | Typical | 3 | | Weight per kW | 0.8 | 1.1 | Strong - top 13% | 29 | | Warranty | - | 5 yrs | | | ## Specification ### AC output - **Rated AC power:** 33 kW - **Max AC power:** 36.30 kW - **Max apparent power:** 36.30 kVA - **Phases:** Three-phase - **Nominal AC voltage:** 400 V - **Max AC current:** 55.0 A - **Grid frequency:** 50 Hz - **Power factor:** 0.8 leading – 0.8 lagging - **Harmonic distortion (THD):** 3.0 % ### PV input - **Max DC voltage:** 1100 V - **MPPT voltage range:** 160 to 1000 V - **Start-up voltage:** 180 V - **MPPT trackers:** 3 - **Max input current per MPPT:** 50.0 A - **Max short-circuit current per MPPT:** 50.0 A ### Efficiency - **European efficiency:** 98.3 % - **Max efficiency:** 98.6 % ### Physical - **Dimensions:** 466 × 615 × 225 mm - **Weight:** 25.0 kg - **Enclosure:** IP66 - **Cooling:** forced-air - **Noise:** 55 dB - **Operating temperature:** -25 to 60 °C - **Max humidity:** 100 % - **Max altitude:** 4000 m ### Connectivity and protection - **Interfaces:** Display - **Protocols:** 4G, RS485 (x1) - **Protection:** DC switch, Surge protection ### Warranty and certificates - **Certifications:** NB/T 32004-2018, GB/T 37408-2019 ### Pros - **BNEF 2025 Bankability Leader** - Sungrow ranked 1st in the BloombergNEF Inverter Bankability Survey 2025 for the sixth consecutive year, achieving 100% recognition among respondents. By end of 2025, the company surpassed 1,000 GW of cumulative installed capacity worldwide, providing strong assurance of long-term service support and spare parts availability. - **3 Independent MPPTs with Global Scanning** - Three isolated MPPT channels enable independent management of array sections with different orientations or partial shading, preventing cross-string power losses. The global MPPT scan function eliminates the risk of the algorithm becoming trapped at a local power maximum - particularly valuable under the variable cloud cover typical of the Polish climate. - **Peak Efficiency of ~98.6-98.7%** - The related SG25/30/33CX-P2 series achieves a maximum efficiency of 98.7% (per Sungrow and ENF Solar datasheets). The high European efficiency (weighted at partial load) minimizes conversion losses under the typical operating conditions encountered across Poland throughout the year. - **IP66 Rating + Two-Level AC/DC SPD Protection** - The IP66 protection rating ensures resistance to heavy rain and dust ingress in flat-roof and open-field installations. Integrated DC- and AC-side surge protective devices (SPDs) eliminate the need to purchase external SPD units, reducing both BoS cost and system complexity. - **Free iSolarCloud Monitoring via RS485** - The iSolarCloud ecosystem provides remote data monitoring, diagnostics, and firmware updates with no subscription fees - unlike, for example, SMA's Sunny Portal Premium license. RS485 integration with third-party data loggers enables straightforward connection to SCADA and BMS systems used in commercial installations. ### Cons - **No Built-In Wi-Fi/Ethernet Module** - The T P2-CN series does not include an integrated Wi-Fi or Ethernet communicator as standard - iSolarCloud monitoring requires the purchase of a separate data logger (e.g., WiNet-S or SolarLogger), adding approximately 300-500 PLN per installation point to the BoS cost and increasing the number of components to commission. - **Grid-Tied Only - No Battery Expansion Support** - The series supports neither AC-coupling nor DC-coupling with a battery. Given growing interest in energy storage in both the commercial and prosumer segments in Poland, the absence of this capability may necessitate a full inverter replacement if a BESS is added to the system in the future. ## About this series The Sungrow SG30-33T-P2-CN series are three-phase **on-grid (grid-tie)** inverters designed for commercial installations and larger domestic systems, where reliable network operation and high yield repeatability are key. The application of **three independent MPPTs** facilitates the design of PV arrays with different orientations or partial shading - each string can operate with different module characteristics, helping to minimize losses and improve the energy balance throughout the day. The **global MPPT scanning** enables faster identification of the optimal working point after changes in sunlight conditions. In practice, the high European efficiency translates to lower conversion losses under typical operating conditions in Poland, meaning more energy is actually fed into the grid annually. In terms of durability, features like **IP66 and AC/DC overprotection** are important, as are solutions that ease service and commissioning. Monitoring is carried out via the iSolarCloud ecosystem, with wired communication (RS485) and integration options with data loggers. This is the series for installers and investors looking for a flexible string inverter for rooftops and small PV farms, without hybrid functions or energy storage capabilities. ## Questions ### Can the Sungrow SG30-33T-P2-CN inverter handle panels mounted on roof faces with different orientations? Yes, the SG30-33T-P2-CN series is equipped with 3 independent MPPT inputs, meaning each one can operate with a separate string of panels - for example, south-, east-, or west-facing. This allows the installer to design a system on a multi-pitch roof without needing to unify panel orientations, minimizing energy losses caused by differences in irradiance across individual roof faces. ### What is the warranty on the Sungrow SG30-33T-P2-CN inverter series? The standard manufacturer's warranty from Sungrow for commercial inverters, including the SG30-33T-P2-CN series, is 5 years. It can be extended to 10 or even 25 years through optional service packages offered by authorized distributors. Sungrow is a Tier 1 manufacturer, which ensures strong financial backing and long-term availability of spare parts and service support. ### Is the SG30-33T-P2-CN suitable for a small PV ground-mount farm, or only for rooftop installations? The SG30-33T-P2-CN series performs well in both commercial rooftop installations and small ground-mounted PV farms. The power range of 30 to 33 kW combined with 3 independent MPPT inputs allows flexible string design for a variety of PV array configurations. The absence of hybrid functionality means the unit is optimized exclusively for on-grid operation, with no support for energy storage systems. ### How does system monitoring work with the Sungrow SG30-33T-P2-CN inverter? Monitoring is carried out through Sungrow's iSolarCloud platform. The inverter communicates via a wired RS485 interface (Modbus RTU), and internet connectivity is provided through an external data logger. From the mobile app or web dashboard, both the system owner and the installer can track real-time energy production, system efficiency, and any active alarms or fault events. ### What level of weatherproofing does the Sungrow SG30-33T-P2-CN provide? The inverter carries an IP66 protection rating, providing full protection against dust ingress and high-pressure water jets. The unit is designed for outdoor installation - for example, wall-mounted on a building facade or on a structure adjacent to the PV array. In addition, built-in AC and DC surge protection safeguards the internal electronics against damage caused by lightning strikes and transient overvoltages. ### How does the SG30-33T-P2-CN series differ from Sungrow's hybrid inverters, such as the SH series? The SG30-33T-P2-CN series is a purely grid-tied on-grid inverter - it does not support battery storage or islanding operation. The SH series (e.g., SH10RT) consists of hybrid inverters capable of connecting to battery systems and operating during grid outages. The SG30-33T-P2-CN is a simpler, more cost-effective solution intended for customers who do not plan to expand their installation with an energy storage system. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/inverters/ds-20240909-sg30-33t-p2-cn-v3-cn-779b5b7f2349.pdf) ## Alternatives | Inverter | Rated AC | Euro efficiency | MPPT | Weight | Difference | | --- | --- | --- | --- | --- | --- | | [Growatt MID 33KTL3-X](https://comparepv.com/inverter/growatt-mid-33ktl3-x) | 33 kW | 98.5% | | 29.5 kg | 4.5 kg heavier | | [Sungrow SG33CX](https://comparepv.com/inverter/sungrow-sg33cx) | 33 kW | 98.3% | | 50.0 kg | 25.0 kg heavier | | [Sungrow SG33CX-P2](https://comparepv.com/inverter/sungrow-sg33cx-p2) | 33 kW | 98.3% | 3 | 38.0 kg | 13.0 kg heavier | | [SOFAR 33KTLX-G3](https://comparepv.com/inverter/sofar-solar-sofar-33ktlx-g3) | 33 kW | 98.2% | | 36.0 kg | 11.0 kg heavier | | [Ginlong Solis S5-GC33K](https://comparepv.com/inverter/ginlong-solis-s5-gc33k) | 33 kW | 98.2% | | 38.2 kg | 13.2 kg heavier | | [Ginlong Solis S6-GC3P33K03-NV-ND](https://comparepv.com/inverter/ginlong-solis-s6-gc3p33k03-nv-nd) | 33 kW | 98.0% | 3 | 26.5 kg | 1.5 kg heavier | | [Deye SUN-33K-G03](https://comparepv.com/inverter/deye-sun-33k-g03) | 33 kW | 98.0% | 4 | 44.5 kg | +1 MPPT, 19.5 kg heavier | | [Growatt MID 33KTL3-X2](https://comparepv.com/inverter/growatt-mid-33ktl3-x2) | 33 kW | | | 31.0 kg | 6.0 kg heavier | --- Source: https://comparepv.com/inverter/sungrow-sg33t-p2-cn