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Hybrid Air-Liquid Cooling Simulated Load BankVILVA-GB200/GB300

Positioned exclusively for high-compute AI rack-scale data centers equipped with NVIDIA GB200 NVL72 and GB300 NVL72, this air-liquid hybrid simulation dummy load bank (simulated load bank) integrates liquid-cooled heating modules and air-cooled heating modules within a single rack. It replicates the power consumption layering, thermal zoning, electrical interfaces and liquid cooling pipeline parameters of real compute racks at a 1:1 ratio.
It is deployed for infrastructure acceptance of intelligent computing centers, CDU commissioning, power supply stress testing, pipeline flow distribution verification and redundancy reliability testing. Full-scenario infrastructure validation can be completed without deploying physical GPU servers on racks.

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Product Description

Positioned exclusively for high-compute AI rack-scale data centers equipped with NVIDIA GB200 NVL72 and GB300 NVL72, this air-liquid hybrid simulation dummy load bank (simulated load bank) integrates liquid-cooled heating modules and air-cooled heating modules within a single rack. It replicates the power consumption layering, thermal zoning, electrical interfaces and liquid cooling pipeline parameters of real compute racks at a 1:1 ratio.It is deployed for infrastructure acceptance of intelligent computing centers, CDU commissioning, power supply stress testing, pipeline flow distribution verification and redundancy reliability testing. Full-scenario infrastructure validation can be completed without deploying physical GPU servers on racks.

Liquid Cooling Zone: Simulates high heat flux density components including Grace CPUs and Blackwell GPUs of GB200/GB300. Adopts cold plate direct cooling, and matches the inlet/outlet coolant flow rate, temperature, pressure and flow resistance parameters of DLC direct liquid cooling system.

Air Cooling Zone: Simulates convective heat loads of auxiliary components such as memory modules, hard drives, motherboards and network adapters, and verifies hot air recirculation of precision air conditioners in the computer room as well as the rationality of hot and cold aisle layout.

Independent Air & Liquid Cooling Control: The power of air cooling and liquid cooling can be adjusted in independent steps to reproduce actual thermal distribution under various computing load rates, and synchronously verify the coordinated heat dissipation performance of liquid cooling CDU and room precision air conditioners.

VILVA-Fan Cooled Load Bank

●Standard 19-inch rack form factor with integrated mounting lugs for stacked rack installation.

● Equipped with redundant axial fans for forced exhaust; optional independent temperature control to start/stop fans.

● Stepwise power switching.

● Optional real-time monitoring of voltage, current, active power and internal cabinet temperature.

●Optional multi-interlock protection against overtemperature, overload, overcurrent and fan faults.

● Supports remote group control via RS485 and Ethernet Modbus TCP; multiple units can be paralleled to expand total power capacity

Single-phase AC 220V (for IT branch circuits, C13/C14 sockets testing)

Basic Type	Rated Power	Overall Height	Power Adjust Method	Rated Current	Machine Size (W×H×D)	Net Weight
VILVA-AC220V-3KW-RF	3kW	4U	Power Steps 0.5/1/1.5KW	13.6A	482×178×500mm	22kg
VILVA-AC220V-6kW-RF	6kW	6U	Multi-stage power superposition	27.3A	482×178×500mm	28kg
VILVA-AC220V-10kW-RF	10kW	6U	Stepless adjustment range 0-10 kW	45.5A	482×266×520mm	37kg
VILVA-AC220V-12kW-RF	12kW	6U	7 independent switchable power stages	54.5A	482×266×520mm	41kg

Three-phase AC 380/400/415V(for testing three-phase PDU incoming power and overall rack main power supply

Suitable for supporting use with air-cooled auxiliary heat sources of GB200/GB300 cabinets.

Basic Type	Total Rated Power	Overall Weight	Power Supply	Single-phase Rated Current	Adjustment Accuracy
Basic Type	Total Rated Power	Overall Weight	Power Supply	Single-phase Rated Current	Adjustment Accuracy
VILVA-AC380V-15KW-RF	15KW	6U	3P4 Line AC380V	22.8A	0.1KW step-less continuous adjustment
VILVA-AC380V-24KW-RF	24kW	8U	3P5 Line AC400V	36.5A	Independent switching per branch
VILVA-AC380V-30kW-RF	30kW	8U	3P5 Line AC415V	43.3A	Remote programmable 0-100%

VILVA-Liquid Cooled Load Bank

● Low-noise operation: Overall unit noise below 50dB, causing no noise interference during closed computer room testing.

● High power density: Delivers far higher power within the same rack unit space than air-cooled loads, suitable for segmented simulation of high-density computing racks.

● Comprehensive liquid cooling monitoring: Real-time collection of inlet/outlet coolant temperature, flow rate, differential pressure and liquid leakage signals.

● Capacity expansion via parallel connection of multiple units; supports synchronized remote cluster programmable control, ideal for batch acceptance testing of entire data centers.

Single-phase AC 220V (for branch circuit testing of single-node servers)

Type	Rated Power	Overall Weight	Adjustment Method	Rated Current	Machine Size(W×H×D)

VILVA-AC220V-10KW-LB	10kW	4U	0-10kW Stepless Adjustable	45.5A	482×178×520mm
VILVA-AC220V-15KW-LB	15KW	6U	Multi-stage Switching	68.2A	482×266×520mm

Three-phase AC 380/400/415V (GB200/GB300)

Total Types	Total Rated Power	Rack U Height	Power Supply	Single-phase Rated Current	Power Step
Total Types	Total Rated Power	Rack U Height	Power Supply	Single-phase Rated Current	Power Step
VILVA-AC400V-20KW-LB	20kW	4U	3P5 Line AC400V	28.9A	0.1KW
VILVA-AC415V-40KW-LB	40kW	6U	3P5 Line AC415V	57.8A	0.1kW
VILVA-AC415V-60KW-LB	60kW	8U	3P5 Line AC415V	86.7A	1WHigh Precision Power Step
VILVA-AC415V-96KW-LB	96KW	12U	3P5 Line AC415V	138.7A	Independent adjustment for each channel

Hybrid Air-Liquid Cooling Simulated Load Bank

GB200 TYPE

Type	Total Rated Power	Air-cooled zone power	Liquid-cooled zone power	Input voltage standard	Applicable objects
Type	Total Rated Power	Air-cooled zone power	Liquid-cooled zone power	Input voltage standard	Applicable objects
VILVA-AC415V-208KW-J	208kW	24KW	184KW	AC415V/3P5	GB200 NVL72 Complete Rack
VILVA-AC400V-215KW-J	216kW	24KW	192KW	AC400V/3P5 Line	GB200 High-Density Expansion Rack
VILVA-AC380V-120KW-STD	120KW	15KW	105KW	AC380V	Single /Half Rack GB200 Node Test

ELECTRICAL PARAMETERS

● Rated Voltage: AC380V/400V/415V+10%, Three Phase Five Lines.

● Frequency: 50Hz/60Hz Adaption.

● Power Factor: ≥0.98，THDI (Total Harmonic Distortion of Input Current) ＜ 5%.

● Wiring Mode: Industrial 63A CEE Dual redundant connection with quick connectors and aviation plugs, equipped with 3-meter power cables.

● Adjustmen Power: 0-100% Stepless continuous adjustment with 1kW power step, remote programmable control.

● Standard Rack: 48U industrial server cabinet, 600 (W) × 1066 (D) × 2200 (H) mm.

● Mobile structure: Heavy-duty universal casters with locking brakes at the bottom.

● Designed inlet liquid temperature: 20~25°C (maximum withstand temperature: 45°C.

● Total rated flow per cabinet: 80 L/min.

● Allowable flow resistance: ＜1.2 bar.

● Integrated PDU: The cabinet is equipped with 8 independent branch circuit breakers inside, supporting independent switching of power per branch.

● Protection Grade: IP20 (Indoor installation in computer room.

● Triple interlock protection: Millisecond-level load cut-off triggered by low flow, overpressure and liquid leakage detection.

● Multi-point PT100 temperature measurement for the whole unit, automatic power derating upon overheating protection.

● Communication Interfaces: Local touch screen + 1000M Ethernet group control, supporting Modbus TCP and SNMP protocols.

● Data Storage: Real-time recording of power, temperature, flow and pressure curves, automatic data export, and generation of Excel-format acceptance reports.

● Noise Level: Less than 70dB at full load, much quieter than traditional air-cooled load banks.

● Design temperature difference between inlet and outlet liquid: 8–12°C.

● Interface Specification: Standard quick-disconnect liquid cooling connectors, compatible with original NVIDIA CDU pipeline interfaces.

● Monitoring items: inlet/outlet liquid temperature, instantaneous flow rate, pipeline pressure, liquid leakage detection, cold plate wall temperature, multi-point data acquisition.

AIR-COOLING ZONE PARAMETERS

● Redundant configuration of forced axial flow fans with variable frequency speed regulation.

● Adjustable outlet air volume to simulate internal air duct resistance of servers.

● Independent temperature collection to verify the threshold of computer room return air temperature.

GB300 TYPE

The power consumption and heat flux density of GB300 NVL72 single cabinet are significantly increased compared with GB200. The peak power consumption of a single cabinet can reach the 250kW level. The power rating of the load is upgraded synchronously, and the partition ratio of air cooling and liquid cooling is optimized simultaneously

Type	Total Rated Power	Fan Cooled Power	Liquid Cooled Power	Power Supply	Applicable Models
Type	Total Rated Power	Fan Cooled Power	Liquid Cooled Power	Power Supply	Applicable Models
VILVA-AC415V-250kW-G3	250KW	30kW	220kW	AC415V3P5 Line	GB300 NVL72 Standard Complete Rack
VILVA-AC480V-300KW-L2A	300KW	35KW	265KW	AC480V customization	GB300 Ultra High Density Expansion Rack
VILVA-AC400V-130KW-HALF	130kW	16KW	114KW	AC400V	GB300 Half Rack Node Test

ELECTRICAL PARAMETERS

● Coolant: Deionized pure water / Special OAT antifreeze with controllable conductivity.

● Design flow rate per cabinet: >95 L/min.

● Cold plate pressure resistance: Max. 1.6 bar.

● Heat density zoning: Adjustable flow for independent branches of GPU cold plates, replicating distributed heat generation of 72 B300 GPUs.

● Temperature Rise Control: The temperature rise of the full-load complete rack is less than 15°C, fully complying with the thermal design limits of GB300 complete racks.

● Supports daisy-chain Ethernet cluster synchronous control for up to 80 load cabinets, enabling batch linkage testing of the entire computer room.

● Modular power units; failure of a single branch will not affect the load operation of other circuits of the whole unit.

● Supports parallel expansion; multiple load banks can be paralleled to simulate the total load of multi-cabinet computing clusters

TECHNICAL ADVANTAGES

● High-fidelity operating condition replication: Independent power regulation for air-cooled and liquid-cooled zones, capable of simultaneously verifying two heat dissipation systems including liquid cooling CDU and computer room air conditioning.

● Greatly reduced test costs: No need to deploy million-level genuine GB200/GB300 computing servers for full-load aging tests. The dummy load can operate continuously 7×24h repeatedly over long term without any chip wear and tear.

● Full-dimensional quantitative acceptance: Automatically collect complete data including electric power, three-phase current and voltage, inlet/outlet liquid temperature, flow rate, pressure difference, cabinet supply and return air temperature, and directly generate acceptance documents for computer room infrastructure.

● Easy installation and deployment: Standard 48U integrated cabinet delivered as a whole unit. Testing can be initiated right after power-up and liquid cooling pipeline connection, with no on-site assembly or commissioning needed.

● Wide compatibility & customizable design: Voltages (380V/400V/415V/480V), power stages, liquid cooling connector types and communication protocols can all be customized as required, compatible with mainstream domestic and foreign CDU and liquid cooling pipeline brands.

DELIVERY LIST

● Factory inspection report and type test certificate for complete equipment.

● Original full PDF datasheets (electrical, liquid cooling, mechanical and communication protocol manuals.

● Touch screen operation manual and remote group control host PC software.

● Supporting power cables, liquid cooling quick disconnect fittings and installation fixing accessories.

● Test data export templates and acceptance report generation tool.

● One-year warranty and on-site commissioning service specification.

SELECTION SUGGESTIONS

● For standard GB200 NVL72 racks: Preferred model VILVA-AC415V-208kW-J.

● For infrastructure acceptance of standard GB300 complete racks: Recommended model VILVA-AC415V-250kW-G3.

● Overseas computer rooms with 480V power supply and ultra-high density computing racks: Custom 300kW series models are adopted.

● For small-batch commissioning of single-node or half-rack units: Adopt 120kW/130kW compact air-liquid hybrid load banks.

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