Deye SUN-40/45/50K-G04

40kW three phase string inverter with 98.7% efficiency and 1100V max PV voltage.

Models Covered: SUN-40K-G04, SUN-45K-G04, SUN-50K-G04

Manufacturer: Ningbo Deye Technology Co., Ltd. (Stock Code: 605117.SH)

Application: The Deye SUN-40K-G04 series represents the pinnacle of solar energy conversion for demanding commercial installations. With 40kW power range, 98.7% max efficiency, up to 52kW PV input, 1100V max PV voltage, 200-1000V MPPT range, IP65 protection, Anti-PID function, and VSG support, it delivers unparalleled performance and versatility.

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Technical Specifications

Parameter SUN-40K-G04SUN-45K-G04SUN-50K-G04
PV String Input Data
Max PV Input Power 52 kW58.5 kW65 kW
Max PV / DC Voltage 1100 V
Max PV Input / Array Open Circuit Voltage 1100 V
Max PV Input Current 40+40+40 A40+40+40 A40+40+40+40 A
MPPT Efficiency >99%
MPPT Voltage Range 200 V – 1000 V
MPPT Voltage Range at Full Load 450 V – 850 V
Start-up Voltage 250 V
Max PV Short-Circuit Current 60+60+60 A60+60+60 A60+60+60+60 A
MPPT Nominal Voltage 600 V
Electrical / AC Output Data
European Efficiency 98.1%
Max AC Apparent Power 44 kVA49.5 kVA55 kVA
Max Efficiency 98.7%
Rated AC Power 40 kW45 kW50 kW
AC Grid Connection Type 3L+N+PE
Grid / AC Frequency 50Hz/45Hz-55Hz,60Hz/55Hz-65
Output Voltage Range 220/380V230/400V0.85Un-1.1Un
Rated AC Output Current 60.6/58 A68.2/65.2 A75.8/72.5 A
THD / THDi <3%
Adjustable Power Factor Range 0.8 leading-0.8lagging
Max AC Output Current 66.7/63.8 A75/71.7 A83.3/79.7 A
Protection Features
IP Rating IP65
AC/DC Surge Protection TYPE||(DC),TYPEI|(AC)
Anti-Islanding Protection yes
Over-Temperature / Thermal Protection yes
Residual Current Monitoring Unit yes
Operating Conditions
Noise Level <50 dB
Operating Temperature -25 to 60 °C

Note: Specifications are based on the official Deye SUN-40/45/50K-G04 datasheet. Values may be subject to change; always verify against the latest manufacturer documentation before system design and procurement.

Availability & grid compliance in Italy

Market Italy
Grid authority / regulator ARERA Italy
Quotation currency EUR
Support hours timezone Europe/Rome
Delivery & installation coverage Rome, Milan, Naples, Turin

Figures on this page are the manufacturer's own, measured at the test conditions the datasheet states — they do not change by country. What changes is the approval that has to be met before the unit is energised: in Italy that is ARERA Italy. Confirm the grid code, import requirements and any local certification with them, or with us, before you order.

Key Features & Technical Highlights

  • 98.7% Efficiency: Maximum energy conversion
  • 1100V PV Input: High voltage solar strings
  • Anti-PID: Prevents panel degradation
  • VSG Support: Virtual Synchronous Generator
  • String Monitoring: Optional intelligent monitoring
  • Intelligent Cooling: Advanced thermal management

Frequently Asked Questions

Is the DEYE SUN-40K-G04 suitable for the Middle East climate?

Yes. DEYE inverters are rated for high ambient temperatures and dusty conditions common across the Gulf, North Africa and the wider MEA region, with IP-rated enclosures for outdoor installation in shaded areas.

What is the maximum PV input power?

The SUN-40K-G04 series supports up to 52kW of PV input power, allowing for high DC/AC ratios and maximum energy harvest.

Does it support Anti-PID function?

Yes! The optional Anti-PID function helps prevent long-term performance degradation of solar panels, ensuring high efficiency over the system's lifespan.