Deye SUN-16/18/20K-SG05LP3-EU-SM2 is a high-power three-phase hybrid inverter series designed for advanced residential and commercial solar energy systems. Available in 16kW, 18kW, and 20kW power ratings, the series integrates solar generation, low-voltage battery storage, grid connection, and generator support within one flexible energy management solution.

The inverter supports 40–60V lead-acid or lithium-ion batteries with charging and discharging currents of up to 350A. It also supports AC coupling, diesel generator energy storage, multiple batteries in parallel, up to 10 inverters in parallel for on-grid and off-grid operation, and 100% unbalanced output with up to 50% rated power on each phase.

Applications

Large Residential Three-Phase Systems

High-power hybrid solar and battery management for villas and large homes with three-phase electrical loads.

Commercial Solar Systems

Flexible solar and storage solutions for offices, retail facilities, and commercial buildings.

Backup & Off-Grid Systems

Reliable three-phase backup and off-grid power for applications requiring strong battery performance and system scalability.

Solar + Generator Hybrid Systems

Supports solar, battery, grid, and diesel generator integration for resilient multi-source energy systems.

Additional information

Inverter Type	Three Phase Hybrid Inverter
Phase	Three Phase
Rated Output Power	16 / 18 / 20 kW
Surge Power	2× Rated Power for 10s
Output Voltage	220/380V / 230/400V
Output Frequency	50Hz / 60Hz
Max. PV Input Power	24 / 27 / 30 kW
Max. PV Voltage	800V
MPPT Voltage Range	160–650V
Number of MPPTs	2
PV Strings per MPPT	2 + 1
Compatible Battery Type	Lead-acid / Lithium-ion
Battery Voltage Range	40–60V
Max. Charging Current	300A / 330A / 350A
Max. Discharging Current	300A / 330A / 350A
Efficiency	97.6% Max. / 97.0% Euro / >99% MPPT
Parallel Connection	Up to 10 Units
Communication	RS485 / RS232 / CAN
Monitoring	GPRS / Wi-Fi / Bluetooth / 4G / LAN (Optional)
Ingress Protection	IP65
Operation Temp.	-40°C to +60°C (>45°C Derating)
Cooling	Intelligent Air Cooling
Noise Level	<60 dB
Mounting Type	Wall-Mounted
Dimensions	456 × 750 × 268.5 mm
Approx. Weight	50.6 kg
Warranty	5 Years / 10 Years

What power ratings are available in the Deye SUN-16/18/20K-SG05LP3-EU-SM2 Series?
The series is available in 16kW, 18kW, and 20kW rated output power models.

Is this a three-phase hybrid inverter?
Yes. The SUN-SG05LP3-EU-SM2 is a three-phase hybrid inverter designed for 220/380V and 230/400V electrical systems.

What battery types are compatible with this inverter?
The inverter supports both lead-acid and lithium-ion batteries with a battery voltage range of 40–60V.

What is the maximum charging and discharging current?
The 16kW model supports up to 300A, the 18kW model up to 330A, and the 20kW model up to 350A maximum charging and discharging current.

What is the maximum PV input voltage?
The inverter supports a maximum PV input voltage of 800V, with an MPPT operating voltage range of 160–650V.

Does the inverter support unbalanced three-phase loads?
Yes. It supports 100% unbalanced output, with maximum output of up to 50% of rated power on each phase.

Can multiple inverters operate in parallel?
Yes. Up to 10 inverter units can operate in parallel for both on-grid and off-grid applications.

Does the inverter support multiple batteries in parallel?
Yes. The system supports multiple batteries connected in parallel for expandable energy storage configurations.

Does the inverter support diesel generator integration?
Yes. It supports storing energy from a diesel generator for flexible backup and hybrid operation.

Can this inverter retrofit an existing solar system?
Yes. The inverter supports AC coupling, allowing battery storage to be integrated with existing solar installations.

Can battery charging and discharging be scheduled?
Yes. The inverter provides 6 programmable time periods for battery charging and discharging.

What is the maximum inverter efficiency?
The inverter achieves up to 97.6% maximum efficiency, 97.0% Euro efficiency, and greater than 99% MPPT efficiency.

What communication and monitoring options are available?
The inverter supports RS485, RS232, and CAN communication, with optional GPRS, Wi-Fi, Bluetooth, 4G, and LAN monitoring.

What environmental protection rating does the inverter have?
The inverter features an IP65 protection rating and can operate from -40°C to +60°C, with derating above 45°C.

What is the warranty period?
The inverter is available with a 5-year or 10-year warranty, depending on the installation site and applicable Deye warranty policy.

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Features & Benefits