GoodWe ET LV Series Hybrid Inverter
5-20kW | Three Phase | 2/3/4 MPPTs
The GoodWe ET LV Series inverter, ranging from 5kW to 20kW, is designed for residential photovoltaic (PV) systems. It offers seamless integration with low-voltage (48V) batteries, supporting a wide variety of battery capacities and brands, including GoodWe's own Lynx A G3, Lynx U G3, and BAT 14kWh models. This makes it a versatile solution for homeowners seeking reliable energy storage.
Key Features
- High Performance: 20 Amperes per string & 200% PV oversizing; Dual independent battery inputs with 416 Amperes.
- Superb Safety & Reliability: AI-driven AFCI (Arc Fault Circuit Interrupter) optional¹; Type II SPD (Surge Protection Device) on both DC and AC sides; IP66 ingress protection.
- Smart Control & Monitoring: Seamless switching in less than 4 milliseconds; Generator compatibility and charge for battery.
- Flexible & Adaptable Applications: Unbalanced output up to 150%; Compatible with both Lithium and lead-acid batteries.
¹ Optional devices or functions are purchased separately.
Technical Data
| Parameter | GoodWe ET LV Series Models | ||||||
|---|---|---|---|---|---|---|---|
| GW5K-ET-L-G10 | GW6K-ET-L-G10 | GW8K-ET-L-G10 | GW10K-ET-L-G10 | GW12K-ET-L-G10 | GW15K-ET-L-G10 | GW20K-ET-L-G10 | |
| Battery Side | |||||||
| Battery Type*¹ | LFP (LiFePO4) / Lead-acid | ||||||
| Nominal Battery Voltage (V) | 48 | ||||||
| Battery voltage range (V) | 40 to 60 | ||||||
| Start-up Voltage (V) | 30 | ||||||
| Number of Battery Inputs | 1 | 1 | 1 | 1 | 1 | 2 | 2 |
| Max. Continuous Charging Current (A) | 125 | 135 | 175 | 220 | 250 | 165 / 165 | 208 / 208 |
| Max. Continuous Discharging Current (A) | 125 | 135 | 175 | 220 | 250 | 165 / 165 | 208 / 208 |
| Max. Charging Power (kW) | 5 | 6 | 8 | 10 | 12 | 15 | 20 |
| Max. Discharging Power (kW) | 5.5 | 6.6 | 8.8 | 11.0 | 13.2 | 16.5 | 22.0 |
| PV Side | |||||||
| Max. Input Power (kW) | 10 | 12 | 16 | 20 | 24 | 30 | 40 |
| Max. Input Voltage (V)*2 | 1000 | ||||||
| MPPT Operating Voltage Range (V)*3 | 150 to 850 | ||||||
| Start-up Voltage (V) | 180 | ||||||
| Nominal Input Voltage (V) | 620 | ||||||
| Max. MPPT Current (A) | 20 / 20 | 20 / 20 | 20 / 20 | 20 / 20 / 20 | 20 / 20 / 20 | 20 / 20 / 20 / 20 | 20 / 20 / 20 / 20 |
| Max. MPPT Short Circuit Current (A) | 26 / 26 | 26 / 26 | 26 / 26 | 26 / 26 / 26 | 26 / 26 / 26 | 26 / 26 / 26 / 26 | 26 / 26 / 26 / 26 |
| Number of MPPTs | 2 | 2 | 2 | 3 | 3 | 4 | 4 |
| Number of Strings per MPPT | 1 / 1 | 1 / 1 | 1 / 1 | 1 / 1 / 1 | 1 / 1 / 1 | 1 / 1 / 1 / 1 | 1 / 1 / 1 / 1 |
| AC Side (On-grid) | |||||||
| Nominal Power (kW) | 5 | 6 | 8 | 10 | 12 | 15 | 20 |
| Max. Power (kW) | 5.5 | 6.6 | 8.8 | 11.0 | 13.2*4 | 16.5*4 | 22.0*4 |
| Nominal Apparent Power Output to Grid (kVA) | 5 | 6 | 8 | 10 | 12 | 15 | 20 |
| Max. Apparent Power to Utility Grid (kVA) | 5.5 | 6.6 | 8.8 | 11.0 | 13.2 | 16.5 | 22.0 |
| Nominal Apparent Power from Grid (kVA) | 5 | 6 | 8 | 10 | 12 | 15 | 20 |
| Max. Apparent Power from Grid (kVA) | 48.3 | 48.3 | 48.3 | 48.3 | 48.3 | 48.3 | 48.3 |
| Nominal Voltage (V) | 400/380, 3L/N/PE | ||||||
| Voltage Range (V) | 170 to 290 | ||||||
| Nominal Frequency (Hz) | 50/60 | ||||||
| Frequency Range (Hz) | 45 to 65 | ||||||
| Max. Current to Grid (A) | 7.9@230V 8.3@220V | 9.6@230V 10@220V | 12.8@230V 13.4@220V | 15.9@230V 16.7@220V | 19.1@230V*5 20@220V | 23.9@230V*5 25@220V | 31.9@230V*5 33.3@220V |
| Max. Current From Grid (A) | 7.5@220V | 9.1@220V | 12.1@220V | 15.2@220V | 18.2@220V | 22.7@220V | 30.3@220V |
| Nominal Current From Grid (A) | 7.2@230V | 8.7@230V | 11.6@230V | 14.5@230V | 17.4@230V | 21.7@230V | 29.0@230V |
| Nominal Current to Grid (A) | 7.2@230V 7.5@220V | 8.7@230V 9.1@220V | 11.6@230V 12.1@220V | 14.5@230V 15.2@220V | 17.4@230V 18.2@220V | 21.7@230V 22.7@220V | 29.0@230V 30.3@220V |
| Power Factor | ~1 (Adjustable from 0.8 leading to 0.8 lagging) | ||||||
| THDI | Less than 3% | ||||||
| Back-up Side | |||||||
| Nominal Output Apparent Power (kVA) | 5 | 6 | 8 | 10 | 12 | 15 | 20 |
| Max. Output Apparent Power (kVA) | 5.5 (10.0, 10s) | 6.6 (12.0, 10s) | 8.8 (16.0, 10s) | 11.0 (20.0, 10s) | 13.2 (24.0, 10s) | 16.5 (30.0, 10s) | 22.0 (40.0, 10s) |
| Max. Output Apparent Power with Grid (kVA) | 48.3 | ||||||
| Max. Output Current (Bypass) | 70 | ||||||
| Nominal Output Voltage (V) | 400/380, 3L/N/PE | ||||||
| Nominal Output Frequency (Hz) | 50/60 | ||||||
| Generator Side | |||||||
| Nominal Apparent Power (kVA) | 20 | ||||||
| Max. Apparent Power (kVA) | 20 | ||||||
| Nominal Voltage (V) | 400/380 | ||||||
| Nominal Frequency (Hz) | 50/60 | ||||||
| Frequency Range (Hz) | 45 to 55 / 55 to 65 | ||||||
| Max. Current (A) | 30.3 | ||||||
| Efficiency | |||||||
| Max. Efficiency | 97.8% | 97.8% | 97.8% | 97.8% | 97.8% | 97.9% | 97.8% |
| European Efficiency | 97.0% | 97.0% | 97.1% | 97.3% | 97.3% | 97.3% | 97.4% |
| Max. Battery to AC Efficiency | 95.5% | ||||||
| MPPT Efficiency | 99.9% | ||||||
| Protection | |||||||
| PV String Current Monitoring | Integrated | ||||||
| PV Insulation Resistance Detection | Integrated | ||||||
| Residual Current Monitoring | Integrated | ||||||
| PV Reverse Polarity Protection | Integrated | ||||||
| Battery Reverse Polarity Protection | Optional | Optional | Optional | Optional | Optional*6 | Optional*6 | Optional*6 |
| Anti-islanding Protection | Integrated | ||||||
| AC Overcurrent Protection | Integrated | ||||||
| AC Short Circuit Protection | Integrated | ||||||
| AC Overvoltage Protection | Integrated | ||||||
| DC Switch | Integrated | ||||||
| DC Surge Protection | Type II | ||||||
| AC Surge Protection | Type II | ||||||
| AFCI*7 | Optional | ||||||
| Rapid Shutdown | Optional | ||||||
| Remote Shutdown | Optional | ||||||
| General Data | |||||||
| Operating Temperature Range (°C) | -35 to +60 | ||||||
| Relative Humidity | 0 to 95% | ||||||
| Max. Operating Altitude (m) | 4000 | ||||||
| Cooling Method | Smart Fan Cooling | ||||||
| User Interface | LCD | ||||||
| Communication with BMS | CAN | ||||||
| Communication | WIFI+LAN+Bluetooth, 4G, RS485, CAN | ||||||
| Communication Protocols | Modbus RTU (RS485), Modbus TCP / IP (Ethernet), Sunspec Modbus RTU | ||||||
| Weight (kg) | 42.2 | 42.2 | 42.2 | 45.3 | 45.3 | 49.7 | 51.2 |
| Dimension (WxHxD mm) | 756 x 551 x 258 | ||||||
| Noise Emission (dB) | Less than 45 | ||||||
| Power Self-consumption at Night (kW) | Less than 15 | ||||||
| Ingress Protection Rating | IP66 | ||||||
| Anti-corrosion Class | C4 | ||||||
| Mounting Method | Wall Mounted | ||||||
Notes:
- *1: The Li-lon battery usually contains two mainstream types: LFP and Ternary Lithium battery.
- *2: When the input voltage is greater than 980V, the inverter will enter standby mode, and when the voltage returns to below 950V the inverter will return to normal operation.
- *3: Please refer to the user manual for the MPPT Voltage Range at Nominal Power.
- *4: For Brazil and Chile, the Max. Power is the same with the Nominal Power.
- *5: For Brazil, for GW12K-ET-L-G10, GW15K-ET-L-G10 and GW20K-ET-L-G10, the Max. Current to Grid is 18.2A@220V, 22.7A@220V and 30.3A@220V respectively.
- *6: For Brazil, for GW12K-ET-L-G10, GW15K-ET-L-G10 and GW20K-ET-L-G10, the Battery Reverse Polarity Protection is integrated.
- *7: AFCI is integrated in Brazil.
- *8: GW5K-ET-L-G10 is expected to be available around October.
- *: Please visit GoodWe website for the latest certificates.
- *: All pictures shown are for reference only. Actual appearance may vary.
For more information, visit www.goodwe.com.
