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CS L 50 H A
CHUNSHU COOLING
5kW Horizontal BESS Liquid Cooling Unit for Energy Storage Cabinets
Model: CS L 50 H A
Compact Cooling for Battery Energy Storage
The Chunshu CS L 50 H A is a horizontal liquid cooling unit designed for battery energy storage cabinets and power electronics. It combines active refrigeration, coolant circulation and PTC heating in a compact enclosure to support controlled battery operating temperatures.
At a glance | CS L 50 H A |
Cooling capacity | 5.0 kW at W18°C / L45°C |
PTC heating | 2.0 kW |
Rated liquid flow | 45 L/min at 90 kPa |
Installation | Horizontal |
Front and rear views of the Chunshu CS L 50 H A 5 kW horizontal BESS liquid cooling unit.
Designed for Cabinet Integration
Compact horizontal format. A 245 mm-high enclosure supports integration into cabinet layouts designed for horizontal cooling equipment.
Active cooling and heating. Refrigeration removes heat from the coolant, while the PTC heater supports low-temperature operation.
Controlled circulation. A DC electronic speed-controlled pump circulates coolant through the connected battery cooling circuit.
Accessible service connections. Front electrical connections, liquid connections and a charge/drain ball valve support installation and maintenance.
Technical Specifications
The following values apply to the standard CS L 50 H A configuration with 220 VAC power and R410A refrigerant.
Parameter | Specification |
Model | CS L 50 H A |
Power supply | Single-phase 220 VAC ±15%, 50 Hz |
Cooling capacity | 5.0 kW at W18°C / L45°C |
Rated cooling input power | 2.8 kW at W18°C / L45°C |
Cooling current — rated / maximum | 12.8 A / 17.0 A |
Rated PTC heating capacity | 2.0 kW |
Rated heating current | 10.0 A |
Rated liquid flow | 45 L/min at 90 kPa |
Operating ambient range | −30°C to +55°C |
Refrigerant — standard model | R410A |
Maximum noise | 75 dB(A) |
Corrosion protection grade | C3 |
Housing material / finish | SGCC galvanized steel / RAL 7035 |
Net weight | 85 kg |
Dimensions without flange (W × H × D) | 700 × 245 × 900 mm |
Liquid supply / return connections | NW26 quick connectors |
Mounting orientation | Horizontal |
Cooling capacity and input power are specified at W18°C / L45°C. The ambient operating range does not imply a constant 5 kW cooling capacity at every temperature. Match the unit to the project heat load, coolant conditions and hydraulic requirements.
Optional Cabinet Dehumidification
A condensation dehumidification option is available: 25 mL/h at 30°C and 50% relative humidity, with 50 m³/h circulating airflow and a Ø50 mm air connection.
Components, Controls & System Integration
Component | Configuration |
Compressor | DC inverter rotary compressor |
External fan | DC speed-controlled fan |
Circulation pump | DC electronic speed-controlled pump |
Liquid heater | PTC |
Plate heat exchanger | Stainless steel |
Refrigerant throttling | Expansion valve |
Charge / drain ball valve | Included |
Temperature Control for the Connected System
The PID controller supports liquid supply temperature, liquid return temperature and cell temperature control modes. Select the control strategy to match the battery system and available temperature signals.
Communication & Commissioning
Modbus RS485 is standard, with CAN communication available as an option. The unit can be integrated with a compatible BMS, EMS or supervisory controller. A dedicated debug-screen connection supports commissioning.
Electrical and communication connections must follow the terminal definitions supplied with the selected unit. Confirm the required communication option and protocol before ordering.
Electrical terminals, coolant quick connectors and charge/drain valve on the Chunshu horizontal BESS liquid cooling unit.
Dimensions & Installation
The standard enclosure measures 700 mm wide × 245 mm high × 900 mm deep, excluding the flange. Allow additional space for mounting, liquid hoses, wiring, airflow and service access.
Installation Requirements
Maintain the specified orientation. Keep the unit in its specified transport and installation orientation. Recommended tilt after installation is less than 3°.
Keep ventilation paths clear. Reserve adequate space around air inlets and outlets, coolant connections and the charge/drain valve.
Fill before startup. Fill the coolant circuit and verify that all electrical connections are secure before powering on.
Select suitable coolant. Use an ethylene glycol/water antifreeze solution with a freezing point below the lowest expected site temperature.
Applications & Product Selection
Typical applications include commercial and industrial battery cabinets, battery racks, cabinet subsystems within containerized BESS, and compatible PCS or other power electronics cooling circuits. Selection depends on the actual heat load and system layout.
Frequently Asked Questions
How do I select a 5 kW unit for my BESS?
Use the calculated battery heat load, charge/discharge profile, maximum ambient temperature, coolant target temperature, flow and pressure requirements. Battery capacity in kWh alone is not sufficient to determine the required cooling capacity.
Which power supply and refrigerant are specified?
The standard model uses single-phase 220 VAC ±15%, 50 Hz and R410A. Optional configurations include 380 VAC power and R134a or R513A refrigerant. Contact Chunshu for the matching specification, as electrical and performance data vary by configuration.
Does the unit include heating and communication?
The standard model includes a 2.0 kW PTC heater and Modbus RS485 communication. CAN and cabinet dehumidification are optional configurations.
REQUEST A PROJECT SELECTION
Send Chunshu your heat load, operating temperatures, coolant type, flow/pressure requirements, power supply, installation space and required quantity. We can confirm a suitable configuration and provide the matching technical documents.
Chunshu Cooling | www.chunshucooling.com | info@chunshucooling.com
