The Ginlong Solis S6-GU350K-EHV series are three-phase grid-connected inverters (on-grid) designed for large commercial and industrial installations as well as PV farms, where operational stability and easy diagnostics are crucial. Versions with 12 or 16 MPPT allow flexible string design for different module orientations and minimize losses under uneven irradiance or partial shading - each tracker independently searches for the maximum power point, translating to higher annual energy yield. High European efficiency means fewer losses under typical operating conditions in Poland, resulting in more generated energy fed into the grid. The inverters support smart string monitoring and I-V diagnostics, speeding up fault detection and improving service efficiency. Remote software updates and integration with the monitoring platform facilitate portfolio management, while optional PLC communication simplifies the infrastructure. The IP66 rating, anti-PID features, and certificate set (including CE, EN 50549, IEC 62109) enhance safety and compliance with market requirements.
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Specifications
Pros and cons
The datasheet (version V2.7, September 2024) indicates a maximum efficiency of 99.0% and an European efficiency of ~98.9%, placing the S6-GU350K-EHV on par with direct competitors (Sungrow SG350HX, Huawei SUN2000-330KTL-H1) and resulting in minimal conversion losses under typical Polish climate conditions.
Two variants (M12/M16) with independent trackers and wide current inputs enable the use of 182 and 210 mm bifacial modules without external optimizers. Each MPPT operates independently - losses due to partial shading or different exposures are limited to the affected string, rather than the entire inverter.
The 1500 V main line allows for the design of strings with a greater number of modules, reducing the cost of DC cabling and the number of combiners required. The permissible oversizing of >150% gives designers the flexibility to maximize production during morning and evening hours without exceeding power limits.
The Night SVG function allows for passive power delivery to the grid at night (without production losses), which is a key requirement of IRiESD for farms exceeding 200 kW connected to the SN distribution network. Scanning the I-V curve and intelligent string monitoring enable fault localization without physical inspection, reducing O&M costs.
The combination of IP66 protection, C5 corrosion resistance (for marine and industrial environments), and integrated anti-PID night recuperation makes the inverter ready for use in harsh conditions without the need for additional external enclosures or anti-PID modules, which simplifies the design and reduces capital expenditures (CAPEX).
For projects financed with bank loans (typically 10-15 years), the 5-year factory warranty (verified by invertersupply.com for the US model) requires a mandatory extension purchase, which increases the overall project cost. Some financial institutions in Poland require a minimum 10-year manufacturer warranty or an insurance policy as a substitute in the loan agreement.
The mounting weight specified in the datasheet (version 2.7) requires the use of a crane or forklift, which, in the case of a farm with dozens of inverters, significantly increases the installation time and cost compared to modular solutions based on lower-capacity central inverters.
Alternatives
About the S6-GU350K-EHV series
These answers cover the whole series. Where a figure differs, the specification above is this model's own.