earth earth
Partnership Inquiries
3.34MW/6.7MWh-2h<br>String-type Liquid-Cooled ESS 3.34MW/6.7MWh-2h<br>String-type Liquid-Cooled ESS

3.34MW/6.7MWh-2h
String-type Liquid-Cooled ESS

Product Advantages Product Advantages
Flexible Solutions

· The string-type energy storage solution enables battery cluster-level management

· It supports a parallel and cascadable layout, reducing single-unit footprint by over 30%

· With a modular design, it ensures convenient and efficient later-stage maintenance and operation

High Reliability

· Core modules feature IP66 high protection and C5 corrosion protection, withstanding various harsh environments

· 250kA short-circuit capacity on the DC side with ms-level breaking capability

· Features intelligent detection of various system faults, as well as detection and protection against thermal runaway

Grid-friendly

· The product features primary frequency regulation and inertia support functions, flexibly meeting grid operationrequirements

· It supports the IEC61850 protocol and rapid power response capability

Intelligent & High-Efficiency

· Features high-efficiency and intelligent liquid cooling temperature equalization control, with a temperaturedifference of less than 3°C

· Adopts a three-level topology with a maximum conversion efficiency of 99%

· Enables intelligent automatic fluid replenishment, reducing the need for manual fluid replenishment

Technical Specifications Technical Specifications
Model 3.34MW/6.7MWh
DC-side
Cell type 3.2V/314Ah
System Battery Configuration 416S1Px16
Battery Rated Capacity 6687.94kWh
Battery Voltage Range 1164.8V~1497.6V

The AC-side PCS parameters
AC-Side Rated Power 3350kVA
AC-Side Voltage Distortion Rate <3% (rated power)
DC Component ≤0.5% (rated power)
AC-Side Rated Voltage AC660V
Grid Voltage Range 561V~726V
Power Factor >99% (rated power)
Reactive Power Adjustable Range -105%~105%
Rated Grid Frequency 50Hz
Grid Frequency Range 45Hz~55Hz
Isolation Method Transformer Isolation

Transformer Parameters
Rated Power 3800kVA
Voltage Ratio 35kV/0.66kV
Transformer Connection Group Dy11

System Parameters
PCS&Transformer Dimensions (W x H x D) 8500x3100x3000mm (Dry-type Transformer)
Battery Container Dimensions (W x H x D) 8710x2896x2600mm
PCS&Transformer Weight 18T
Battery Container Weight ≤60T
IP Level/Corrosion-proof Grade IP54/C3 (C5 Optional)
Operating Temperature Range -30°C~60°C (>45°C Derating)
Operating Humidity Range 0%~95% (Non-condensing)
Max. Operating Altitude 4000m (Derated Above 2000m)
Cooling Method Liquid Cooling
Converter Cooling Method Intelligent Air Cooling
Fire Protection System Perfluorohexanone/Water
System Communication Interface LAN、 Fiber Optic
External System Communication Protocol Modbus TCP、IEC61850

Get Expert Consult
Download