Inverter · String Inverter

Deye SUN-18K-G05

Deye 18 kW three-phase string inverter for solar power systems.

Specifications

PhaseThree-phase
Weight [kg]20
Max. Efficiency98.50%
MPPT voltage range(V)200-1000
Communication InterfaceRS485/RS232
Max. PV Input Power(kW)23.4
Max. PV Input Voltage(V)1100
Ingress Protection(IP) RatingIP 65
Rated output voltage/range (V)220/380V, 230/400V 0.85Un-1.1Un
Rated AC Output Active Power(kW)18
No. of MPP Trackers/No. of Strings per MPP Tracker2/2+2

How to read this record

  • Continuous output is what the inverter can hold for hours. Surge is a short overload for motor starts and is often double the continuous rating.
  • Battery voltage fixes the bank topology. A 48 V inverter needs a 48 V bank, and the charge current must be within the battery's limit.
  • Maximum PV voltage and the MPPT window are different limits. A string can be inside the MPPT window and still exceed the maximum PV voltage when cold.

Datasheet and manual

Check it fits your design

Specifications change with revisions and firmware. Confirm the exact model with the manufacturer, then check the battery voltage, charge current, MPPT window and communication protocol against the rest of the system.

More specifications

Record last updated 19 October 2026. Confirm the model revision with the manufacturer before ordering.

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