Air-Cooled Load Banks for Power & Cooling Validation
One platform. Every scale of commissioning. From individual racks to facility-wide testing, Gradian air-cooled load banks provide 12 kW to 3,500 kW of load capacity for validating power and cooling infrastructure.
12 kW – 3,500 kW Capacity Range
Rack-Mount to Fully Containerized Form Factors
Load Accuracy as Tight as ±2%
Group Control of Up to 40 Networked Units
What Makes a Gradian Air-Cooled Load Bank?
Full-Range Capacity, Fine Load Control
12 kW to 3,500 kW across the line, with a 1 kW minimum load step for fine, repeatable load profiles at any capacity.
Continuous-Duty Forced-Air Cooling
Continuous-duty forced-air cooling with airflow up to 17,600 CFM and variable-speed fans that shut down automatically when load is removed.
Precise, Repeatable Load Accuracy
Load accuracy as tight as ±2%, with resistive PF 1.0 output (resistive/inductive PF 0.9 on the 3,500 kW containerized unit)..
Technical specifications
Form Factors
Every deployment needs a different footprint to test in. Gradian’s Air-Cooled Load Banks scale across three form factors, each matched to how and where you're actually testing.
In-Rack
Fits a standard IT rack footprint (6U to 30U), for single-rack or small-scale testing without a separate cabinet or floor space.
• 12 kW – 50 kW
• Rack-mount or stand-alone
• Caster wheels with removable floor lock
Cabinet / Row
A portable, floor-standing cabinet for room-level or multi-rack testing, sized to move between locations as a project requires.
• 100 kW – 500 kW
• Mobile on casters
• Local HMI with remote control options
Containerized
A fully self-contained, facility-scale unit for megawatt-class commissioning, deployable indoors or outdoors without a dedicated building.
• Up to 3,500 kW
• Self-contained steel enclosure
• Local HMI, remote PC software, LAN, and Modbus-TCP control
Test With Confidence. Every Time
When millions of dollars of equipment is on the line, precise validation is paramount. Gradian provides you with the technical foundation to test and operate with ease and efficiency, every time
Test Your Way - Anywhere
Waiting on facility connections before testing can even start is time nobody wants to lose. Rack-mount, portable-cabinet, and containerized form factors with casters and floor locks get you testing fast.
Rack, Cabinet & Container Form Factors - Match the deployment scale, from a single rack to a fully containerized unit.
Caster Wheels & Floor Locks - Move into position and start testing without a facility connection project.
No Facility Water Hookups - Air-cooled operation skips the plumbing a liquid-cooled test setup would need.
Control All Tests From One Interface
Coordinating multiple load banks manually across a facility doesn't scale. Local HMI control and networked group control of up to 40 units bring every load bank under one coordinated test, so facility-wide commissioning doesn't depend on tracking units one by one.
Local HMI Control - Operate directly at the unit when that's all a test needs.
RS485/Modbus-RTU, Modbus-TCP/IP & Ethernet - Integrate into existing control and monitoring systems.
Group Control of Up to 40 Units - Coordinate facility-wide testing from a single interface.
Built for Continuous, Unsupervised Testing
A long commissioning run shouldn't require someone standing by the whole time just in case something goes wrong. Integrated protection across the unit means continuous testing can run unattended, with safeguards doing the watching instead.
Over-Current & Over-Voltage Protection - Guard against electrical conditions outside safe operating range.
Over-Temperature & Fan-Interlock Protection - Prevent operation if cooling airflow isn't present or temperatures exceed safe limits.
Emergency-Stop & Short-Circuit Protection - Stop the system immediately if a fault or manual stop is triggered.
Questions, answered.
An air-cooled load bank applies a controlled electrical load and rejects the heat to air, so teams can commission and validate UPS systems, generators, switchgear, and cooling infrastructure without live IT hardware.
