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Flexible and Efficient
Intelligent temperature control at the cell level to improves system efficiency and battery cycle life.
Modular parallel design, automatic balance management, easy for system expansion and overall control.
Wide DC voltage operation range, flexible for battery configuration.
Grid Friendly
Advanced active and passive combined islanding detection technology.
Adjusting the active and reactive power following dispatching instruction in on-grid mode.
Grid support including L /HVRT, black start, specified power factor control and reactive power support.
Safe and Reliable
Three- level BMS system monitoring, fully guarantee the safety of battery system.
Supporting local and remote monitoring.
Efficient vector control algorithm to realize decoupling control of active and reactive power.
Highly Integrated
Highly integrated energy storage system for easy transportation, installation and operation.
Integrated with DAQ controller, HVAC and Firefighting system to enable smart communication, ensure system safety and facilitate EMS access.
Technical Data
| System Model | EESS-500/1118 |
| DC Data | |
| Cell type | 3.2V/260Ah |
| Battery pack | 51.2V/260Ah(1P*16S); 13.31kWh |
| Battery rack | 716.8V/260Ah((1P*16S)*14S) 186.37kWh |
| Battery capacity (BOL) | 1118.222kWh |
| Battery voltage range | 616V ~ 817.66V |
| Rated / Max. Charge C-rate | 0.5C/1C |
| AC Data | |
| AC output power | 500kW |
| Max. AC power | 550kVA |
| Max. AC current | 722A |
| Nominal AC voltage | 400Vac, 3W+N+PE |
| AC voltage range | 400Vac, (-20%~+15%) |
| Grid frequency | 50/60Hz (±2Hz) |
| AC current THD | <3% |
| Power factor / Adjustable power factor | >0.99(at nominal power) / 1.0 leading-1.0 lagging |
| Adjustable reactive power | -100%~100% |
| AC side (Off-Grid) | |
| Nominal AC voltage | 400Vac, 3W+N+PE |
| AC voltage range | 400Vac, (-20%~+15%) |
| AC voltage THD | <3% (linear load) |
| Unbalance load capacity | 100% |
| Over-load capacity | 110% (long-term operation) |
| Efficiency | |
| Max. efficiency | >97.5% |
| Protection | |
| Overvoltage protection | DC Type II / AC Type II |
| Grid monitoring | Yes |
| Ground fault monitoring | Yes |
| Insulation monitoring | Yes |
| Overheat protection | Yes |
| General | |
| Dimensions (W * D * H)mm | 6058x2438x2896 |
| Weight | 17T |
| Isolation method | Transformer |
| Ingress protection rating | IP54 |
| Operating ambient temperature range | -30~+55℃ |
| Relative humidity range | 0~95% (no condensation) |
| Cooling method of battery chamber | Heating, Ventilation and Air Conditioning |
| Cooling method of PCS chamber | Intelligent forced air cooling |
| Fire suppression of battery bank | FM-200 extinguishment system |
| Operating altitude | 2000m |
| Display | Touch screen |
| Communication interfaces | RS485 / Ethernet |
| Communication protocols | MODBUS-RTU/MODBUS-TCP/IEC 104 |
| Grid support | L/HVRT, L/HFRT, active & reactive power control and power ramp rate control |
