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4500 W Cooling at 35°C ambient
3500 W Cooling at 45°C ambient
12.4 A Rated current per phase
1500 m³/h Evaporator airflow
2 × 900 g Refrigerant charge
118 kg Net weight
This high cooling capacity air conditioner is specified for electrical enclosures with concentrated thermal loads, including drive cabinets with multiple rectifier and inverter stages, transformer-adjacent power conversion sections, and utility-scale rectifier banks. The unit delivers 4500W of cooling at 35°C ambient from a dual-circuit refrigeration system.
Where standard single-circuit units are limited by compressor capacity or evaporator airflow, this configuration uses two independent refrigeration circuits with dedicated condenser coils. Each circuit can be isolated for service while the remaining circuit continues to operate, which suits installations where cabinet shutdown is not practical during maintenance windows.
Commercial and Technical Advantages
Dual-circuit redundancy Two independent scroll compressors and condenser coils. If one circuit faults or is taken offline, the remaining circuit continues at approximately 65% to 70% capacity, allowing scheduled repair without immediate cabinet shutdown. Lead and lag circuits alternate on runtime hours to equalize wear.
High evaporator airflow 1500 m³/h airflow distributes cooled air across cabinets with dense component packing. The evaporator section is sized for low air-side temperature rise, reducing the risk of localized hot spots at the top of tall enclosures. EC fans with tachometer feedback maintain airflow as filters load.
Service access without dismounting Filter, controller, and electrical terminations accessible from the front face. Each refrigeration circuit has its own service ports, accessed after removing one cover per circuit. Isolation valves allow evacuation and recharge of one circuit without disturbing the other.
Plant network integration Modbus RTU standard with PROFINET optional. Registers expose suction and discharge pressures per circuit, alarm codes, runtime hours, and setpoint. Dry-contact relay outputs for connection to existing annunciator panels or PLC inputs where network integration is not available.
Documented factory testing Each unit is pressure tested and charged, then run under load with both circuits and with each circuit isolated in turn. Single-circuit capacity is recorded on the test sheet and verified against the specified minimum. Test records supplied for project documentation.
Compliance and documentation CE marked under LVD 2014/35/EU and EMC 2014/30/EU. Refrigerant charge and pressure ratings documented per EN 378. Declaration of conformity, wiring diagram, and capacity tables issued with each unit. RoHS 2 compliant.
Technical Parameters
Cooling and electrical
Cooling capacity at 35°C4500 W ± 4%
Cooling capacity at 45°C3500 W (derated)
Single-circuit capacity≥ 65% of nominal
Operating ambient range-40°C to +55°C
Power supply400V AC, 3-phase, 50/60Hz
Rated current per phase12.4 A
Locked rotor current34 A
Refrigerant and chargeR454C, 2 × 900 g (A2L)
Expansion deviceElectronic expansion valve per circuit
Mechanical and protection
Enclosure ratingIP55 / NEMA 12
Casing materialGalvanized steel, 120 µm powder coat
FastenersStainless steel A2
Sound pressure at 1 m66 dB(A) at 25°C
Evaporator airflow1500 m³/h
Condenser airflow2200 m³/h
Dimensions (H×W×D)1350 × 850 × 420 mm
Net weight118 kg
Protection functionsPhase loss, phase reversal, over/under voltage, high and low pressure per circuit
Deployment Contexts
01
Multi-drive cabinets Enclosures housing several variable frequency drives in a single lineup, where total dissipation exceeds the capacity of standard single-circuit units and localized hot spots form near the rectifier stages.
02
Rectifier and converter banks Utility and industrial rectifier installations where continuous operation is required and cooling equipment downtime must be minimized. Dual circuits allow one circuit to be serviced while the cabinet remains energized.
03
High-density power distribution Main switchgear and distribution sections with concentrated busbar and breaker losses, where airflow volume rather than temperature differential is the limiting factor.
04
Process and mill environments Heavy industrial cabinets adjacent to furnaces, kilns, or high-temperature process equipment, where ambient temperature at the cabinet location exceeds 45°C for extended periods.
Selection and Installation Notes
Thermal calculation For cabinets above 4.0 m³ or with multiple drive sections, provide a component list with dissipation figures. A thermal calculation is recommended rather than capacity table interpolation alone.
Structural support At 118 kg, the unit requires reinforced mounting. Minimum panel thickness 2.5mm steel, or a load-distributing frame. Provide cabinet structural details for review where the panel is below this thickness.
Power and protection Dedicated 3-pole breaker, 25 A C-curve. Copper conductors 6 mm² per phase. Grounding resistance ≤ 2 Ω. External Type 1+2 surge protection recommended for exposed outdoor installations.
Clearance Maintain 400mm at the condenser inlet and 600mm at the discharge. Where two units are mounted adjacent, stagger at 90° or provide additional separation to prevent condenser air recirculation.
Refrigerant handling R454C is classified A2L (mildly flammable). Service must follow local regulations for A2L refrigerants, including ventilation, leak detection, and technician certification requirements. Each circuit is charged independently.
Maintenance interval Filter inspection monthly in dusty plants. Condenser coil cleaning quarterly. Annual check of refrigerant charge per circuit, pressure switch operation, and electrical torque values. Circuit runtime hours logged for lead/lag rotation.
Procurement FAQ
Each unit is run with both circuits active, then with each circuit isolated in turn while the other operates. Cooling capacity at single-circuit operation is measured and recorded on the test sheet. Units are released only where recorded capacity is at least 65% of nominal.
Yes. Each circuit has isolation valves and independent service ports. One circuit can be evacuated and serviced while the other continues operating. This is the principal reason the dual-circuit configuration is specified for cabinets where shutdown is not practical.
The casing platform supports capacities from 3500W to 5500W with the same external dimensions and mounting pattern. Where the calculated load falls below 4500W, a lower-capacity configuration can be specified without changing the installation envelope.
Dimensional drawing, wiring diagram, capacity table including derating curve, refrigerant data sheet per circuit, Modbus register map, mounting template, declaration of conformity, and factory test record including single-circuit capacity measurement.
Standard configuration lead time is 6 to 8 weeks. Orders above 30 units are scheduled individually. Custom voltages, communication options, or casing finishes add 2 to 3 weeks. Contact the sales team for a production slot quotation.
Standard warranty is 24 months from commissioning or 30 months from shipment. Compressor coverage extends to 60 months per circuit. Service parts including compressors, EC fans, controllers, expansion valves, and pressure switches are held for a minimum of 10 years from manufacture.
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CUSTOM ISO 9001 · CE Certified
Shanghai Soouney Refrigeration Equipment Co., Ltd.
A large-to-medium-sized high-tech enterprise integrating R&D, production and sales. Upholding "integrity, quality, service and innovation" — delivering reliable cooling solutions to the world.
11+
Export Countries
200+
Projects Delivered
19+
Years of Innovation
100%
Client Satisfaction
2007
Engineering Excellence in Refrigeration
Shanghai Soouney was founded with a vision to become a leading force in the refrigeration industry. We are China High Cooling Capacity Cabinet Air Conditioner Manufacturers and Custom High Cooling Capacity Cabinet Air Conditioner Suppliers. Today, we are a renowned brand in cabinet air conditioners and industrial chillers, recognised by professionals worldwide.
Rooted in the Chinese market, we provide reliable refrigeration solutions to clients across the globe — from standard products to professional customisation.
From standard products to professional customization — we deliver precision cooling.
R&D Driven
High starting points, stringent standards — continuous innovation
Integrity & Trust
Long-term partnerships built on transparency and after-sales support
Certified Quality
ISO 9001, CE, and industry-specific approvals across all lines
Global Mindset
Serving 40+ countries with tailored refrigeration solutions
"We don't just cool equipment — we build trust, one project at a time."
Why Soouney
Driven by Quality & Innovation
Committed to delivering excellence through continuous improvement and customer-centric solutions.
R&D Focus
High starting points, stringent standards — continuous product improvement
Integrity & Service
Long-term partnerships built on trust, transparency and after-sales support
Global Presence
Rooted in China, serving worldwide with reliable refrigeration solutions
Certified Quality
ISO 9001, CE, and industry-specific approvals for all product lines
