Products Description
what is Deye 14-20K 3-String Version Inverter?
In the diverse landscape of European rooftops-marked by multiple angles, intermittent shading from chimneys or trees, and the desire to maximize every available space-standard solar solutions fall short. Introducing the Deye 14-20K 3-String Version Inverter, the intelligent hybrid inverter engineered specifically for complexity. This isn't merely an inverter; it's a precision energy management hub that transforms challenging roof layouts into optimized, high-yield power plants. With its dedicated three independent MPPT trackers, it ensures that every panel group on your different roof planes performs at its absolute peak, delivering unparalleled energy harvest and resilience for large homes and commercial properties.

Advantages of Deye 14-20K 3-String Version Inverter
The core innovation of this model lies in its advanced triple MPPT (Maximum Power Point Tracking) design. Unlike single or dual-tracker inverters that force all panels to operate under the same conditions, this system provides three separate "command centers."
Master Complex Layouts
Seamlessly manage solar arrays facing East, West, and South on a single system. There's no compromise in efficiency from mismatched orientations.
Defeat Partial Shading
Morning shadow on one section? A passing cloud over another? The independent trackers isolate and optimize each string individually, preventing underperformance in one area from dragging down the entire system's output.
Future-Proof Flexibility
This design allows for the integration of different panel types or capacities across strings over time, offering unmatched planning freedom for system expansion or upgrades.
Features of Deye 14-20K 3-String Version Inverter
Beyond superior capture, this inverter serves as the brain of a sophisticated energy ecosystem.

Grid Harmony and Certified Reliability
Designed according to the latest European grid codes to guarantee safe and reliable integration with the Utility Network. Our advanced management system safeguards your home while preserving the stability of the grid through lightning-fast disconnect/reconnect capabilities.
UPS Operation
Ensuring power continuity at all times. In the case of an interruption in the Utility Grid, our system will transition to Backup Mode within milliseconds, delivering uninterrupted power to your critical loads via solar and battery systems without any interruption in service (critical for home offices, security systems, and other modern home applications).


Energy Distribution Orchestration
The system performs all energy distribution in an automated manner, prioritizing solar energy first for use, charging batteries with any additional energy produced from solar generation, and making intelligent decisions based on real-time demand to know when to use grid power and when to sell excess electricity back to the power company. By maximizing the self-consumption of solar energy, users can save more and achieve a higher return on investment. Users can also have total visibility into and control of their system through its intuitive cloud-based interface.
Material of Deye 14-20K 3-String Version Inverter
Engineered for durability, the inverter boasts a professional-grade, industrial design.
Material and Construction Quality: The case of the Qualifier is constructed with corrosion-resistant materials and features robust, time-tested metal casing to support it over the long-haul. Internally, the Qualifier employs premium components; solid polypropylene capacitors and high-performance transformers are two examples of components that combine to make the Qualifier a reliable platform for both continuous and high-load applications.
Optimally Designed to Manage Heat Generation: A sophisticated cooling system equipped with intelligent fan control keeps operating temperatures at optimal levels for prolonged reliability and performance, especially in areas where space limitations exist, e.g. garage type facilities and/or utility closets.
Professional Quality, Modern Aesthetic: A professional, clean, modern look has been achieved through a simple interface, easy-to-read digital display and status indicators. The compact size and neutral color of the unit can complement either a home or a business installation in both residential and commercial applications.
Your Partner in Advanced Energy Independence
Choosing this Deye 14-20K 3-String Version Inverter means investing in a future-proof, high-performance solution backed by a global leader in solar technology. We support your investment with robust warranties and access to a network of technical expertise, from system design to ongoing support.
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product Specifications
| Model | SUN-14K-SG05LP3 -EU-SM2 |
SUN-15K-SG05LP3 -EU-SM2 |
SUN-16K-SG05LP3 -EU-SM2 |
SUN-18K-SG05LP3 -EU-SM2 |
SUN-20K-SG05LP3 -EU-SM2 |
| Battery Input Data | |||||
| Battery Type | Lead-acid or Lithium-ion | ||||
| Battery Voltage Range (V) | 40-60 | ||||
| Max. Charging Current (A) | 260 | 280 | 300 | 330 | 350 |
| Max. Discharging Current (A) | 260 | 280 | 300 | 330 | 350 |
| Charging Strategy forLi-ion Battery | Self-adaption to BMS | ||||
| Number of Battery Input | 1 | ||||
| PV String Input Data | |||||
|
Max. PV Access Power (W) |
28000 | 30000 | 32000 | 36000 | 40000 |
| Max. DC Input Power (W) | 22400 | 24000 | 25600 | 28800 | 32000 |
| Max. DC Input Voltage (V) | 800 | ||||
| Start-up Voltage (V) | 160 | ||||
| MPPT Voltage Range (V) | 160-650 | ||||
| Rated DC Input Voltage (V) | 550 | ||||
| Max. Operating PV Input Current (A) | 36+20 | ||||
| Max. Input Short-Circuit Current (A) | 54+30 | ||||
| No.of MPPT Trackers/ No.of String PerMPPT Tracker |
2/2+1 | ||||
| AC Input/Output Data | |||||
| Rated AC Input/Output Active Power (W) | 14000 | 15000 | 16000 | 18000 | 20000 |
| Max. AC Input/Output Apparent Power (VA) | 15400 | 16500 | 17600 | 19800 | 22000 |
| Rated AC Input/Output Current (A) | 21.3/20.3 | 22.8/21.8 | 24.3/23.2 | 27.3/26.1 | 30.4/29 |
| Max. AC Input/Output Current (A) | 23.4/22.4 | 25/24 | 26.7/25.6 | 30/28.7 | 33.4/31.9 |
| Max. Continuous AC Passthrough (grid to load) (A) | 70 | ||||
| Peak Power (off-grid) (W) | 2 times of rated power, 10s | ||||
| Power Factor Adjustment Range | 0.8 leading to 0.8 lagging | ||||
| Rated Input/Output Voltage/Range (V) | 220/380V, 230/400V 0.85Un-1.1Un | ||||
| Rated Input/Output Grid Frequency/Range(Hz) | 50/45-55, 60/55-65 | ||||
| Grid Connection Form | 3L+N+PE | ||||
| Total Current Harmonic Distortion THDi | <3% (of nominal power) | ||||
| DC Component of Grid | <0.5% In | ||||
| Efficiency | |||||
| Max. Efficiency | 97.6% | ||||
| Euro Efficiency | 97.0% | ||||
| MPPTEfficiency | >99% | ||||
| Equipment Protection | |||||
| Integrated |
DC Polarity Reverse Connection Protection, AC Output Overcurrent Protection, Thermal Protection, AC Output Overvoltage Protection, AC Output Short Circuit Protection, DC Component Monitoring, Overvoltage Load Drop Protection, Ground Fault Current Monitoring, Arc Fault Circuit Interrupter (optional), Power Network Monitoring, Island Protection Monitoring, Earth Fault Detection, DC Input Switch, DC Terminal Insulation Impedance Monitoring, Residual Current (RCD) Detection, Surge protection level |
||||
| Surge Protection Level | TYPE II(DC),TYPE II(AC) | ||||
| Interface | |||||
| Communication Interface | RS485/RS232/CAN | ||||
|
Monitor Mode |
GPRS/WIFI/Bluetooth/4G/LAN(optional) |
||||
| General Data | |||||
| Operating Temperature Range (℃) | -40 to +60℃, >45℃ Derating | ||||
| Permissible Ambient Humidity | 0-100% | ||||
| Permissible Altitude | 3000m | ||||
| Noise | ≤60 | ||||
| Ingress Protection(IP) Rating | IP 65 | ||||
| Inverter Topology | Non-Isolated | ||||
| Over Voltage Category | OVC II(DC), OVC III(AC) | ||||
| Cabinet Size (WxHxD mm) | 456×750×268.5 (Excluding Connectors and Brackets) | ||||
| Weight (kg) | 50.6 | ||||
| Type of Cooling | Intelligent Air Cooling | ||||
| Warranty | 5 Years/10 Years the Warranty Period Depends the Final Installation Site of Inverter, More Info Please Refer to Warranty Policy |
||||
| Grid Regulation | IEC 61727, IEC 62116,CEI 0-21, EN 50549, NRS 097, RD 140, UNE 217002, OVE-Richtlinie R25, G99,VDE-AR-N 4105 |
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| Safety / EMC Standard | IEC/EN 61000-6-1/2/3/4, IEC/EN 62109-1, IEC/EN 62109-2 | ||||









