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Deyeb DEYEB ST-18-25K-3P string inverters
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DEYEB ST-18-25K-3P

Grid-tie string inverter · 18–25 kW

String Inverters18–25 kW
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Technical specifications

PV String Input Date

ParameterST-18-25K-3P/AST-18-25K-3P/BST-18-25K-3P/CST-18-25K-3P/DST-18-25K-3P/E
Max. PV Input Power(kW)23.42628.629.932.5
Max. PV Input Voltage(V)11001100110011001100
Start-up Voltage(V)250250250250250
MPPT voltage range(V)200-1000200-1000200-1000200-1000200-1000
Rated PV Input voltage(V)600600600600600
Max. Input Short Circuit Current (A)39+3939+3939+3939+3939+39
Max. Operating PV Input Current(A)26+2626+2626+2626+2626+26
No. of MPP Trackers/No. of Strings per MPP Tracker2/2+22/2+22/2+22/2+22/2+2

AC Output Side

ParameterST-18-25K-3P/AST-18-25K-3P/BST-18-25K-3P/CST-18-25K-3P/DST-18-25K-3P/E
Rated AC Output Active Power(kW)1820222325
Max. AC Output Apparent Power(kVA)19.82224.225.327.5
Rated AC output current (A)27.3/26.130.3/2933.4/31.934.9/33.437.9/36.2
Max. AC Output Current(A)30/28.733.3/31.936.7/35.138.4/36.741.7/39.8
Rated output voltage/range (V)220/380V, 230/400V 0.85Un-1.1Un220/380V, 230/400V 0.85Un-1.1Un220/380V, 230/400V 0.85Un-1.1Un220/380V, 230/400V 0.85Un-1.1Un220/380V, 230/400V 0.85Un-1.1Un
Grid Connection Form3L/N/PE3L/N/PE3L/N/PE3L/N/PE3L/N/PE
Rated Output Grid Frequency/range(Hz)50/45-55, 60/55-6550/45-55, 60/55-6550/45-55, 60/55-6550/45-55, 60/55-6550/45-55, 60/55-65
Power Factor Adjustment Range0.8 leading to 0.8 lagging0.8 leading to 0.8 lagging0.8 leading to 0.8 lagging0.8 leading to 0.8 lagging0.8 leading to 0.8 lagging
Total Current Harmonic Distortion THDi<3%<3%<3%<3%<3%
DC Injection Current<0.5%ln<0.5%ln<0.5%ln<0.5%ln<0.5%ln

Efficiency

ParameterST-18-25K-3P/AST-18-25K-3P/BST-18-25K-3P/CST-18-25K-3P/DST-18-25K-3P/E
Max. Efficiency98.50%98.50%98.50%98.50%98.50%
Euro Efficiency98%98%98%98%98%
MPPT Efficiency＞99%＞99%＞99%＞99%＞99%

Equipment Protection

ParameterST-18-25K-3P/AST-18-25K-3P/BST-18-25K-3P/CST-18-25K-3P/DST-18-25K-3P/E
DC Reverse Polarity ProtectionYesYesYesYesYes
AC Output Overcurrent ProtectionYesYesYesYesYes
AC Output Overvoltage ProtectionYesYesYesYesYes
AC Output Short Circuit ProtectionYesYesYesYesYes
Thermal ProtectionYesYesYesYesYes
Insulation Impedance DetectionYesYesYesYesYes
DC Component MonitoringYesYesYesYesYes
Arc Fault Circuit Interrupter (AFCI)OptionalOptionalOptionalOptionalOptional
Anti-islanding ProtectionYesYesYesYesYes
Residual Current DetectionYesYesYesYesYes
Surge Protection LevelTYPE II(DC),TYPE II(AC)TYPE II(DC),TYPE II(AC)TYPE II(DC),TYPE II(AC)TYPE II(DC),TYPE II(AC)TYPE II(DC),TYPE II(AC)
DC SwitchYesYesYesYesYes

Interface

ParameterST-18-25K-3P/AST-18-25K-3P/BST-18-25K-3P/CST-18-25K-3P/DST-18-25K-3P/E
Communication InterfaceRS485/RS232RS485/RS232RS485/RS232RS485/RS232RS485/RS232
Monitor ModeGPRS/WIFI/Bluetooth/4G/LAN(optional)GPRS/WIFI/Bluetooth/4G/LAN(optional)GPRS/WIFI/Bluetooth/4G/LAN(optional)GPRS/WIFI/Bluetooth/4G/LAN(optional)GPRS/WIFI/Bluetooth/4G/LAN(optional)

General Data

ParameterST-18-25K-3P/AST-18-25K-3P/BST-18-25K-3P/CST-18-25K-3P/DST-18-25K-3P/E
Operating Temperature Range (°C)-25 to +60℃, >45℃ Derating-25 to +60℃, >45℃ Derating-25 to +60℃, >45℃ Derating-25 to +60℃, >45℃ Derating-25 to +60℃, >45℃ Derating
Permissible Ambient Humidity0~100%0~100%0~100%0~100%0~100%
Permissible Altitude (m)4000m4000m4000m4000m4000m
Noise (dB)≤ 50dB(A)≤ 50dB(A)≤ 50dB(A)≤ 50dB(A)≤ 50dB(A)
Ingress Protection(IP) RatingIP 65IP 65IP 65IP 65IP 65
Inverter TopologyNon-IsolatedNon-IsolatedNon-IsolatedNon-IsolatedNon-Isolated
Over Voltage CategoryOVC II(DC),OVC III(AC)OVC II(DC),OVC III(AC)OVC II(DC),OVC III(AC)OVC II(DC),OVC III(AC)OVC II(DC),OVC III(AC)
Cabinet Size (WxHxD mm)362mm*527mm*220mm（Excluding connectors and brackets）362mm*527mm*220mm（Excluding connectors and brackets）362mm*527mm*220mm（Excluding connectors and brackets）362mm*527mm*220mm（Excluding connectors and brackets）362mm*527mm*220mm（Excluding connectors and brackets）
Weight [kg]2020202020
Warranty [year]5 years5 years5 years5 years5 years
Type Of CoolingIntelligent air coolingIntelligent air coolingIntelligent air coolingIntelligent air coolingIntelligent air cooling
Grid RegulationIEC 61727,IEC 62116,CEI 0-21,EN 50549，NRS 097,RD 140,UNE 217002,OVE-Richtlinie R25,G99,VDE-AR-N 4105IEC 61727,IEC 62116,CEI 0-21,EN 50549，NRS 097,RD 140,UNE 217002,OVE-Richtlinie R25,G99,VDE-AR-N 4105IEC 61727,IEC 62116,CEI 0-21,EN 50549，NRS 097,RD 140,UNE 217002,OVE-Richtlinie R25,G99,VDE-AR-N 4105IEC 61727,IEC 62116,CEI 0-21,EN 50549，NRS 097,RD 140,UNE 217002,OVE-Richtlinie R25,G99,VDE-AR-N 4105IEC 61727,IEC 62116,CEI 0-21,EN 50549，NRS 097,RD 140,UNE 217002,OVE-Richtlinie R25,G99,VDE-AR-N 4105
Safety EMC/StandardIEC/EN 61000-6-1/2/3/4, IEC/EN 62109-1, IEC/EN 62109-2IEC/EN 61000-6-1/2/3/4, IEC/EN 62109-1, IEC/EN 62109-2IEC/EN 61000-6-1/2/3/4, IEC/EN 62109-1, IEC/EN 62109-2IEC/EN 61000-6-1/2/3/4, IEC/EN 62109-1, IEC/EN 62109-2IEC/EN 61000-6-1/2/3/4, IEC/EN 62109-1, IEC/EN 62109-2