DEYE 18kW Three-Phase On-Grid Inverter, SUN-18K-G04

Download Datasheet Download User Manual Download EU Declaration of Conformity The DEYE SUN-18K-G04 is designed for three-phase photovoltaic installations connected to the utility grid. It delivers a rated output power of 18kW and can reach a maximum active power of 19.8kW. Its two MPPT trackers support two strings each, providing a total of four photovoltaic inputs. The maximum supported PV input power is 23.4kW, while the MPPT operating range is 200–850V. The inverter achieves a maximum efficiency of 98.6% and includes protection functions for both its DC and AC circuits. Its IP65-rated enclosure, intelligent cooling system and multiple communication interfaces allow integration into large residential and commercial photovoltaic installations. Key Features Three-phase on-grid operation 18kW rated output power 19.8kW maximum active power 23.4kW maximum PV input power Two MPPT trackers Two strings per MPPT Zero Export function and VSG application Smart string monitoring – optional Anti-PID function – optional Type II DC and AC surge protection RS485, RS232, Wi-Fi and LAN communication IP65-rated enclosure Intelligent cooling system Benefits Four String Inputs The two MPPT trackers, with two strings per MPPT, provide flexible PV array design and independent management of two panel groups. PV Input Power of up to 23.4kW The maximum supported DC input power allows controlled PV array oversizing relative to the inverter’s rated output. High Efficiency The maximum efficiency of 98.6% and MPPT efficiency of over 99% help minimise conversion losses. Remote Monitoring and Configuration The available interfaces support system monitoring, remote software updates and remote adjustment of operating parameters, subject to the manufacturer’s requirements. Recommended Applications Large residential three-phase photovoltaic systems Commercial installations Office buildings Manufacturing premises and warehouses Rooftop or ground-mounted on-grid photovoltaic systems Applications requiring the limitation of energy exported to the grid General Information Manufacturer DEYE Model SUN-18K-G04 V-TAC SKU 12721 Inverter Type On-grid, three-phase Photovoltaic Input Maximum PV Input Power 23.4kW Maximum PV Input Voltage 1000V Start-Up Voltage 250V MPPT Operating Range 200–850V Maximum DC Input Current 32A + 32A Maximum Short-Circuit Current 48A + 48A MPPT Trackers / Strings per MPPT 2 / 2 + 2 AC Output Rated Output Power 18kW Maximum Active Power 19.8kW Rated Grid Voltage 220/380V, 230/400V AC Voltage Range 277–460V AC, depending on the applicable grid standard Phase Three-phase Rated Frequency 50Hz / 60Hz, optional Frequency Range 47–52Hz or 57–62Hz, optional Rated Output Current at 400V 26.1A Maximum Output Current at 400V 28.7A Power Factor Range 0.8 leading to 0.8 lagging Total Harmonic Distortion (THDi) <3% DC Current Injection <0.5% Efficiency Maximum Efficiency 98.6% European Efficiency 97.8% MPPT Efficiency >99% Protection Integrated Protection Functions DC reverse-polarity protection, AC short-circuit protection, AC overcurrent protection, output overvoltage protection, insulation resistance monitoring, ground-fault protection and thermal protection Anti-Islanding Protection Yes Integrated DC Switch Yes Surge Protection Type II DC / Type II AC Interface and Communication Display 240 × 160 LCD Interfaces RS485 / RS232 / Wi-Fi / LAN Remote Software Updates Yes Remote Parameter Adjustment Yes General Characteristics Dimensions 400 × 520 × 240.5mm Weight 28kg Topology Transformerless Night-Time Power Consumption <1W Operating Temperature -25°C to +65°C Permissible Ambient Humidity 0–100% Maximum Altitude Without Power Derating 2000m Ingress Protection Rating IP65 Typical Noise Level <45dB Cooling System Intelligent cooling Designed Service Life Over 20 years DC Connection MC4-compatible AC Connection IP65-rated connector Commercial Warranty 5 years Standards Grid Connection Standards EN 50549-1, VDE 0126-1-1 Safety and EMC Standards IEC 62109-1/-2, IEC 61000-6-2, IEC 61000-6-4 Compatibility and Important Information This is an on-grid inverter. It does not have a battery connection or a dedicated backup output for supplying electrical loads during a grid outage. Using the Zero Export function requires the appropriate configuration and compatible metering equipment specified by the manufacturer. The PV strings must be sized according to the panels’ Voc, Vmp, Isc and Imp values, the temperatures at the installation site and the electrical limits of each MPPT tracker. Installation, configuration and commissioning must be carried out by qualified personnel in accordance with the manufacturer’s instructions and all applicable regulations.