Deye SUN-40K-G03 40 kW Three-Phase Grid-Tied Solar Inverter
€1,699.00
Deye SUN-40K-G03 is a 40 kW three-phase grid-tied solar inverter with up to 4 MPPTs, 52 kW max. DC input power and 98.7 % efficiency.
- Free delivery across Lithuania
- 14-day returns — we pay for the return shipping
- Manufacturer warranty, CE compliant
The Deye SUN-40K-G03 is a three-phase grid-tied (string) solar inverter with 40 kW rated AC output (44 kW max.), up to 4 MPPTs and 52 kW max. DC input power. Maximum efficiency is 98.7 % and the enclosure is rated IP65. It is meant for 40 kW solar PV systems where most electricity is used during the day.
Technical specifications
| Parameter | Value |
|---|---|
| Model | SUN-40K-G03 |
| Type | three-phase grid-tied (string) inverter, transformerless |
| Rated AC output power | 40 kW |
| Max. active power | 44 kW |
| Max. DC input power | 52 kW |
| Max. DC input voltage | 1000 V |
| Start-up voltage | 250 V |
| MPPT voltage range | 200–850 V |
| Number of MPPTs | up to 4 |
| Max. DC input current | 4 × 40 A |
| Max. short-circuit current | 4 × 60 A |
| Rated AC current | 58 A |
| Max. AC output current | 63.8 A |
| Nominal output voltage | 3L/N/PE, 380 V (323–418 V) / 400 V (340–440 V) |
| Grid frequency | 50 / 60 Hz (selectable); 47–52 or 57–62 Hz (selectable) |
| Power factor | 0.8 leading to 0.8 lagging |
| Current THD (THDi) | < 3 % |
| DC component | < 0.5 % |
| Max. efficiency | 98.7 % |
| European efficiency | 98 % |
| MPPT efficiency | > 99 % |
| Protections | reverse DC polarity, AC short circuit, AC overcurrent, output overvoltage, insulation resistance, earth leakage, islanding, thermal; integrated DC switch |
| Surge protection | Type II (DC) and Type II (AC) |
| Ingress protection | IP65 |
| Operating temperature | -25 to +65 °C, derating above +45 °C |
| Noise | < 45 dB |
| Max. altitude without derating | 2000 m |
| Humidity | 0–100 % |
| Night-time self-consumption | < 1 W |
| Cooling | intelligent |
| Design lifetime | > 20 years |
| Dimensions (W × H × D) | 647.5 × 537 × 303.5 mm |
| Weight | 44.5 kg |
| DC connector | MC4 with plug |
| Display | LCD 240 × 160 |
| Communication interface | RS485/RS232/WiFi/LAN |
| Grid codes | CEI 0-21, VDE-AR-N 4105, NRS 097, IEC 62116, IEC 61727, G99, G98, VDE 0126-1-1, RD 1699, C10-11 |
| Safety and EMC standards | IEC/EN 61000-6-1/2/3/4, IEC/EN 62109-1, IEC/EN 62109-2 |
Download the manufacturer datasheet (PDF)
What is a 40 kW three-phase grid-tied inverter for solar panels used for?
The Deye SUN-40K-G03 suits sites that use electricity while the solar PV system is producing:
- production halls
- offices and shops
- farms with refrigeration or pumps
Generation and consumption overlap in time, so a battery adds little here. This is a grid-tied inverter, so in the evening power is drawn from the grid again.
How many MPPTs does the SUN-40K-G03 have and how do you connect the panels?
The SUN-40K-G03 has up to 4 MPPTs, each with a max. DC current of 40 A. Several MPPTs let you connect separate groups of panels that may differ in orientation or lighting, because each tracks its own maximum power point.
- Max. DC input power is 52 kW, max. voltage 1000 V and start-up voltage 250 V.
- MPPT voltage range is 200–850 V.
- Short-circuit current is 60 A per MPPT.
- DC connectors are MC4.
Can you connect a battery to a string inverter?
No, a battery cannot be connected to the SUN-40K-G03 grid-tied inverter. A battery needs a hybrid inverter or a separate storage inverter. ESO (Lithuanian grid operator) states:
“Part of the surplus electricity generated can be stored in an energy storage device and used in the evening.”
If most of your electricity is used in the evening, it is worth comparing with a hybrid inverter. If you plan to add storage later, it is better to allow for it from the start.
Grid connection and what to know before you buy
The inverter connects to a three-phase 3L/N/PE grid at 380 V or 400 V. Rated AC current is 58 A and max. AC current is 63.8 A.
- It weighs 44.5 kg and measures 647.5 × 537 × 303.5 mm, so allow for suitable mounting.
- Noise is below 45 dB.
- It operates from -25 to +65 °C, with derating above +45 °C.
- Design lifetime is more than 20 years.
- Smart monitoring and Anti-PID are available as options.
We handle it for you. We select the equipment for your site, deliver anywhere in Lithuania, install and connect it.
Frequently asked questions
What is the rated power of the Deye SUN-40K-G03?
The Deye SUN-40K-G03 has a rated AC output power of 40 kW and a max. active power of 44 kW. It is a three-phase grid-tied inverter.
How many MPPTs does the SUN-40K-G03 have?
The Deye SUN-40K-G03 has up to 4 MPPTs. The max. DC current per MPPT is 40 A.
What is the max. DC input power of the SUN-40K-G03?
The Deye SUN-40K-G03 accepts up to 52 kW of DC input power at a max. voltage of 1000 V. The MPPT voltage range is 200–850 V.
How efficient is the SUN-40K-G03?
The Deye SUN-40K-G03 has a max. efficiency of 98.7 %, a European efficiency of 98 % and an MPPT efficiency above 99 %.
Can a battery be connected to the SUN-40K-G03?
No. The SUN-40K-G03 is a grid-tied inverter, so a battery cannot be connected to it. A battery needs a hybrid inverter or a separate storage inverter.
What are the SUN-40K-G03 protection rating and operating temperature?
The Deye SUN-40K-G03 is rated IP65 and works from -25 to +65 °C. Power is derated above +45 °C.
How much does the Deye SUN-40K-G03 weigh?
The Deye SUN-40K-G03 weighs 44.5 kg and measures 647.5 × 537 × 303.5 mm.
What is the design lifetime of the SUN-40K-G03?
The manufacturer states a design lifetime of more than 20 years for the Deye SUN-40K-G03.
Does Hybrid Energy install the SUN-40K-G03?
Yes. Hybrid Energy selects the equipment for your site, delivers anywhere in Lithuania, then installs and connects the 40 kW Deye inverter.
When should I choose a hybrid inverter instead of the SUN-40K-G03?
If most of your electricity is used in the evening, a hybrid inverter is worth considering, because a battery cannot be connected to the 40 kW SUN-40K-G03. Hybrid Energy can help you compare both options.
Sources
| Weight | 44.5 kg |
|---|---|
| Dimensions | 64.8 × 53.7 × 30.4 cm |
| Power | 40 kW |
| Phases | Three-phase |
| Brand | Deye |
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