- 675 Sycamore Drive, Suite 150 Milpitas, CA 95035
IEB350kWh standard battery energy storage system is specifically designed for commercial and industrial applications. Featuring a fully liquid-cooled, all-in-one design, it achieves electrical isolation between input and output, significantly improving safety performance. The system is equipped with two 175kWh battery clusters and supports 1P high power charging/discharging, making it highly efficient in heavy-load electricity usage scenarios. It supports PV access, helping businesses reduce electricity costs.
IEB350kWh construction site power backup BESS focuses on areas with no or weak power grids. It offers plug and play convenience. With rapid automatic on-grid and off-grid function, it enables seamless switching between power supply modes. Supporting lower power charging and high power discharging, it delivers stable power supply for critical loads. This makes it ideal for high-demand scenarios such as construction sites and oilfields, ensuring uninterrupted power supply even during emergencies or in hash environments.
| Technical Parameters | |||
| Model | IEB350kWh Standard BESS | IEB350kWh Construction Site Power Backup BESS | |
| Operating Environment | Operating temperature | -20°C~+50°C | |
| Transportation/Storage temperature | -30°C~+60°C | ||
| Relative humidity | ≤95%RH, non-condensing | ||
| Altitude | 2000m | ||
| Atmospheric pressure | 80kPa~110kPa | ||
| Cooling method | Liquid cooling | ||
| Protection rating | NEMA 3R, IP67 for battery pack, IP55 for battery area, IP54 for distribution area | ||
| AC Grid Access | Frequency | 50Hz/60Hz | |
| Voltage | 3-phase+N+PE, 380/400Vac±10% | ||
| Max input current | 600A | ||
| Rated input power | 350kW (420kW for 1 minute) | 33kW grid power 350kW (420kW for 1 minute) construction site load power | |
| Power factor | 0.8 leading ~ 0.8 lagging | ||
| PV Access | Voltage | DC+/DC-+PE, 300Vdc~740Vdc | N/A |
| Channel | 2 | ||
| Power | 40kW/80kW | ||
| Battery Parameters | Battery dis/charging power ratio | 1P; 1.1P (10 minutes) | |
| Liquid-cooled battery pack | 153.6V, 285Ah, 43.7kWh, liquid-cooled, UL 9540A | ||
| Liquid-cooled battery cluster | 614.4V (547.2V~696.9V), 285Ah, 175kWh | ||
| Number of battery clusters | 2 | ||
| BMS | Infypower 2-level architecture: battery pack BSU + high voltage control box BMU | ||
| STS Support | STS configuration | 250kVA/500kVA | |
| STS power switching time | 20ms | ||
| (Optional) | Function | Automatic/manual mode (on-grid/off-grid), 3-phase 4-wire operation (off-grid) | |
| Protection | Anti-reverse | ||
| Bypass/off-grid function | Optional | ||
| Performance | STS efficiency | 99.50% | |
| PCS efficiency | ≥92.5% | ||
| Noise | ≤65dB | ||
| Metering | AC grid side | 1 bidirectional AC energy meter | |
| Backup load side (optional) | |||
| Station transformer input side (optional) | |||
| EMS | Local EMS | IMMU2 controller, built-in algorithms, big data analytics | |
| Remote EMS platform | Ethernet: TCP/IP; Protocol: Websocket+Json, MQTT+Json, Modbus, IEC 104, IEC 61850 | ||
| Remote hardware interface | 4G/WiFi/WLAN/LAN | ||
| HMI | Inner 10″ TFT touch screen (English by default, multi-language support), 5 * status LED, E-STOP, battery fire alarm indicator/beeper | ||
| Others | Electrical isolation | Full electrical isolation between the grid, battery and PV | |
| Insulation detection | Each battery/PV channel: +/PE and -/PE | ||
| Fire protection | Completely submerged aerosol fire extinguishing system, water fire interface, optional pack-level active perfluorohexanone firefighting | ||
| Fire sensor | Smoke • combustible gas | ||
| Environmental sensor | Water • temperature • humidity • door access | ||
| Safety design | Explosion-proof board configuration, fire-proof structure design, emergency fan | ||
| High voltage control box | Infypower high voltage control box | ||
| Thermal management | Two liquid cooling units, each with 7.5kW refrigerating and 2.5kW heating capacity. Fully designed and manufactured by Infypower | ||
| Certification | TUV CE, CB | ||
| Grid connection | EN 50549, VDE-AR-N 4105, VDE-AR-N 4110 | ||
| Mechanical Parameters | Dimensions (W*D*H) | 2800mm*1400mm*2200mm | |
| Weight | ≤6500kg (including power module and battery pack) | ||
| *The product is continuously evolving. Please refer to the latest datasheet for specifications. | |||

For any queries, technical support, or specific product information, our dedicated team stands ready to assist you.