Deye 20kW Three-Phase Low-Voltage Hybrid Solar Inverter
The Deye SUN-20K-SG05LP3-EU-SM2 is a 20kW three-phase low-voltage hybrid inverter designed for residential, commercial and industrial solar energy systems. It supports 40–60V lead-acid or lithium-ion batteries, up to 26kW of PV input power, and two MPPTs for flexible solar array configuration. The inverter supports grid-connected, backup and off-grid applications and includes integrated protection functions and BMS communication via RS485 and CAN.
Key Features
20kW rated AC output
Three-phase hybrid inverter
40–60V low-voltage battery system
Supports lead-acid and lithium-ion batteries
Maximum battery charge current: 350A
Maximum battery discharge current: 350A
Maximum PV input power: 26kW
Maximum PV input voltage: 1000V
2 MPPTs with 2 strings per MPPT
MPPT voltage range: 160–650V
Maximum AC output power: 22kW
1.5× rated off-grid peak power for 10 seconds
Maximum efficiency: 97.60%
AC and DC Type II surge protection
Integrated anti-islanding protection
Integrated PV reverse-polarity protection
RS485 and CAN BMS communication
IP65 protection rating
Smart cooling
Wall-mounted installation
5-year warranty
Technical Specifications
Brand: Deye
Model: SUN-20K-SG05LP3-EU-SM2
Rated Power: 20kW
Maximum AC Output Power: 22kW
Grid Type: Three-phase
Output Voltage: 220/380V, 230/400V
Output Frequency: 50/60Hz
Battery Type: Lead-acid or lithium-ion
Battery Voltage Range: 40–60V
Maximum Charging Current: 350A
Maximum Discharging Current: 350A
Battery Inputs: 1
Maximum PV Input Power: 26kW
Maximum PV Voltage: 1000V
Start-up Voltage: 180V
MPPT Range: 160–650V
PV Input Current: 26A + 26A
Maximum PV Short-Circuit Current: 39A + 39A
MPPTs / Strings: 2 / 2
Maximum Efficiency: 97.60%
Euro Efficiency: 97.00%
MPPT Efficiency: 99.90%
Operating Temperature: -40°C to 60°C, with derating above 45°C
Cooling: Smart cooling
Noise: <45dB
Communication: RS485, CAN
Protection Rating: IP65
Weight: 26kg
Dimensions: 434 × 645 × 245mm
Installation: Wall-mounted
Warranty: 5 years
Protection
Integrated PV lightning protection
Anti-islanding protection
PV string reverse-polarity protection
Insulation resistance detection
Residual current monitoring
Output over-current protection
Output short-circuit protection
Surge protection
DC Type II / AC Type II over-voltage protection
Certifications and Standards
The supplied specifications list compatibility/compliance with:
CEI 0-21
VDE-AR-N 4105
NRS 097
IEC 62116
IEC 61727
G99
G98
VDE 0126-1-1
RD 1699
C10-11
IEC/EN 61000-6-1/2/3/4
IEC/EN 62109-1
IEC/EN 62109-2
Applications
Three-phase residential solar systems
Commercial energy systems
Industrial solar installations
Battery backup systems
Off-grid solar installations
Solar self-consumption and energy management
