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Ginlong Solis S6-GC75K-LV
Ginlong Solis

S6-GC75K-LV

75 kW Grid-tie Three-phase
Compare with closest alternative Datasheet PDF
Rated AC (kW)
75.00
Typical for its class
Euro eff. (%)
98.3
Typical · median 98.2%
MPPT
-
Not published
Max DC (V)
1100
Typical · median 1100 V
Weight (kg)
-
Not published
Warranty (yrs)
-
Not published

The Ginlong Solis S6-GC K-LV series comprises three-phase grid-tie inverters designed for low-voltage installations, specifically tailored for farms and commercial sites where high energy yield and easy maintenance are crucial. Equipped with multiple MPPT (depending on the variant), this inverter facilitates managing strings on different roof tilts and performs better under partial shading-rather than dragging down the entire system, it precisely optimizes the operation of each section. The high European efficiency translates to significantly lower losses under typical operating conditions in Poland, resulting in more stable annual energy production.

In practice, its focus on safety stands out, including AFCI (lightning protection) and diagnostic features such as I-V curve scanning and string monitoring, which speeds up service and maintenance. The SolisCloud monitoring system and communication options (e.g., WLAN/RS485, often including integration with higher-level systems) are available. This series meets the required EU standards (including EN 50549) and comes with a manufacturer’s warranty, the specifics of which depend on distribution-be sure to confirm it with the seller for the specific model.

Ranking

243 inverters from 30 to 100 kW
Metric This inverter Median Position in class Rank in class
European efficiency 98.3% 98.2% Typical 39
MPPT trackers - 4 Not published -
Max DC input voltage 1100 V 1100 V Typical 3
Weight per kW - 1.1 Not published -
Warranty - 5 yrs Not published -
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Specifications

Open datasheet PDF
Rated AC power 75 kW Continuous output
Max apparent power 75.00 kVA
Phases Three-phase
Nominal AC voltage 230 V
Max AC current 196.8 A
Power factor 0.8 leading - 0.8 lagging
Harmonic distortion (THD) 3.0 %
Max DC voltage 1100 V Caps the string length
MPPT voltage range 160 to 1000 V
Start-up voltage 180 V
Max input current per MPPT 42.0 A Must exceed the panel's Imp
Max short-circuit current per MPPT 50.0 A Must exceed the panel's Isc
European efficiency 98.3 % Weighted across part loads
Max efficiency 98.7 % Best single operating point
Dimensions 567 × 1014 × 345 mm Height × width × depth
Enclosure IP66
Cooling forced-air
Operating temperature -30 to 60 °C
Max humidity 100 %
Max altitude 4000 m
Interfaces Wi-FiDisplay
Protocols RS485Wi-Fi (optional)GPRS (optional)PLC (optional)
Protection AFCIDC switchSurge protection
Certifications IEC 61727IEC 62116C10/11VDE 4105IEEE 1547IEC/EN 62109-1IEC/EN 62109-2IEC/EN 61000-6-2IEC/EN 61000-6-4

Pros and cons

5 positive · 1 caution
What owners get
Maximum efficiency of 97.7% and CEC of 97.0%

The S6-GC30K-LV model achieves a maximum efficiency of 97.7% and a CEC efficiency of 97.0%, placing it among the leading three-phase commercial inverters. In the Polish climate (variable solar irradiance), the high efficiency over a wide power range directly translates to better annual energy savings.

Built-in AFCI (Arc Fault Circuit Interrupter) and string diagnostics

The series is standardly equipped with AFCI (Arc Fault Circuit Interrupter) protection and I-V curve scanning and string-level monitoring functionality. This is uncommon in the entry-mid-range commercial segment - many competitors (such as Huawei SUN2000-L1 or Fronius Eco) offer AFCI as an optional or unavailable feature.

3-8 independent MPPT controllers (depending on power)

Models in the 23-125 kW range feature between 3 and 8 MPPT (Maximum Power Point Tracking) strings with an input current of up to 40 A per string, enabling the use of roof sections with varying orientations and bifacial modules without significant mismatch losses - a key advantage for complex commercial roof geometries.

BNEF Tier 1 - The third-largest producer

Ginlong Solis has consistently been classified as Tier 1 by BloombergNEF and remains the third-largest manufacturer of PV inverters worldwide. Its bankable status makes it easier for financing institutions to fund PV farm projects, as it provides confirmation of the supplier's credibility.

Reliability: Failure rate of less than 0.3%

Ginlong provides an uptime indicator below 0.3% (99.7% reliability) based on field data from long-term installations. When combined with the SolisCloud platform (WLAN/RS485/Ethernet/LTE) and remote diagnostics, this reduces the time required for service interventions, which is critical for commercial facilities with Service Level Agreements (SLAs) for availability.

Trade-offs
SolisCloud platform - limited analytics

SolisCloud provides basic monitoring, but independent reviews (SolarTechOnline 2025) indicate that it lacks advanced predictive analytics and flexible API integrations, which are offered by Huawei FusionSolar and SMA Sunny Portal Premium. This could be a limitation when integrating with enterprise-level SCADA systems.

Inverter Power Euro eff. MPPT Weight Difference
Ginlong Solis S6-GC75K-LV 75 kW 98.3% - - You are here
GW75KBF-MT 75 kW 98.4% 4 65.0 kg Similar on paper
GW75K-MT 75 kW 98.3% 4 70.0 kg Similar on paper
SUN-75K-G03 75 kW 98.3% - 81.0 kg Similar on paper
SUN-75K-G 75 kW 98.3% 4 60.0 kg Similar on paper
SOFAR 75KTLX-G4-LV 75 kW 98.0% - 75.0 kg Similar on paper
MAX 70KTL3 LV 70 kW 98.5% - 86.0 kg -5.0 kW
MAX 80KTL3 LV 80 kW 98.5% - 86.0 kg +5.0 kW
SOFAR 70000TL-HV 70 kW 98.4% 3 70.0 kg -5.0 kW

About the S6-GC K-LV series

6 answered

These answers cover the whole series. Where a figure differs, the specification above is this model's own.

How many MPPT (Maximum Power Point Tracking) inputs does the Solis S6-GC K-LV inverter have, and is that sufficient for a commercial building installation?
Depending on the power configuration, the S6-GC K-LV series offers 3 or 4 independent MPPT inputs, each capable of handling multiple strings. This allows you to connect strings of panels facing different directions or on different roof areas without compromising the performance of the entire system. For a typical commercial building or small farm, this number of MPPT inputs is sufficient and significantly simplifies the design of the system.
What is the standard warranty for the Solis S6-GC K-LV inverter?
Ginlong Solis offers a standard manufacturer's warranty for the S6-GC K-LV series, the length of which depends on the distributor and the sales region. In Europe, a 5-year warranty is most commonly offered, with the option to extend it to 10 years for an additional fee. It is advisable to confirm the exact terms directly with the seller before making a purchase, as they may vary depending on the contract.
What is the AFCI (Arc Fault Circuit Interrupter) in the Solis S6-GC K-LV inverter, and why is it important to pay attention to it?
AFCI (Arc Fault Circuit Interrupter) is an integrated DC-side arc fault protection system. An electrical arc on a damaged cable or connection can cause a fire before a traditional overcurrent protection device activates. The S6-GC K-LV series inverters detect the characteristic current disturbances that indicate an arc and automatically disconnect the circuit. In commercial and farm settings, where regular inspection of the installation is limited, AFCI significantly enhances fire safety.
Is the Solis S6-GC K-LV inverter suitable for a solar farm or a large industrial facility?
Yes, the S6-GC K-LV series is specifically designed for commercial installations and farms. Its three-phase AC output, high nominal power, and the ability to connect multiple units in parallel allow for the creation of extensive systems. Diagnostic features, such as I-V curve scanning and string monitoring, simplify maintenance and enable quick identification of problems in large arrays of panels, which directly translates to reduced production losses.
How does the SolisCloud monitoring system work for the S6-GC K-LV series, and what can it track?
SolisCloud is a cloud platform from Ginlong Solis, accessible via a web browser and a mobile app. Once the inverter is connected via Wi-Fi or RS485, you can remotely monitor the current energy production, the efficiency of individual strings, the history of alarms, and the device's operating parameters. For commercial installations, the platform also allows integration with higher-level systems via API, which is useful for managing larger portfolios of installations.
Does the Solis S6-GC K-LV inverter meet the requirements of the EU market, including those in Poland?
Yes, the S6-GC K-LV series is designed to meet the requirements of the European market and complies with the EN 50549 standard, which specifies the requirements for generators connected to low-voltage grids. The inverter supports the functions required by network operators in Poland, such as reactive power control and active power limiting. However, it is advisable to confirm the specific settings with the local distributor or energy supplier before operation.
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