PRL SERIES
AI Data Center DC Load Simulator
High Dynamics and Regenerative Load Accommodated with Benchmarking Performance
Data centers are being redefined by the evolution of AI where power demands become shifting, volatile and of unpredictable draw. Validation for the AI infrastructure is no longer negotiable. ActionPower's groundbreaking PRL series DC load simulator breaks traditional boundaries by integrating the high-dynamic response of linear programmable loads with the energy efficiency of regenerative systems into a single unified platform.
From a 5U chassis with scalable option for integration into standard racks, PRL features an ultra-fast dynamic response with a current slew rate of up to 60 A/μs and microsecond-level speed, together with a remarkable energy regeneration efficiency of up to 85%, recycling testing power back into the grid to drastically lower laboratory heat dissipation and operational utility costs. Exceptional low-current overshoot control supported, alongside the capability of 1.6x transient overload for 2 milliseconds.
Highlighted Advantages- 80V and 1000V versions available for 50V/54V AI computing power nodes and 800V HVDC architecture validation
- Microsecond-level current response times (as low as ≤6μs) and a peak current slew rate of up to 60 A/μs
- Dynamic testing frequencies up to 30kHz for shifting AI load simulation testing
- Energy regeneration efficiency of up to 85%, reduced HVAC cost
- Low-current overshoot of <3% even under extreme 60 A/μs high-slew-rate dynamic testing
- Robust continuous overload capability of up to 1.6 times the rated current for a duration of 2 milliseconds
- Cabinet-level multi-unit parallel scalability, with modular ultra-high-power load arrays exceeding 100kW
- Dynamic testing mode supporting high-speed load switching up to 30kHz
Model Options
Find the right specification for your requirements
| Model | Rated Power (kW) | Max. Voltage (V) | Max. Rated Current (A) | Max. Transient Current (A) in 2ms | W×D×H (mm) |
|---|---|---|---|---|---|
| PRL18-80-400 | 18.5 | 80 | 400 | 540 | 435×689×219 |
| PRL37-80-800C | 37 | 80 | 800 | 1080 | 600×1000×1370 |
| PRL55-80-1200C | 55.5 | 80 | 1200 | 1620 | 600×1000×1370 |
| PRL74-80-1600C | 74 | 80 | 1600 | 2160 | 600×1000×1370 |
| PRL74-80-1600 | 74 | 80 | 1600 | 2160 | 800×1000×1955 |
| PRL92-80-2000 | 92.5 | 80 | 2000 | 2700 | 800×1000×1955 |
| PRL111-80-2400 | 111 | 80 | 2400 | 3240 | 800×1000×1955 |
| PRL129-80-2800 | 129.5 | 80 | 2800 | 3780 | 800×1000×1955 |
| PRL25-1000-40 | 25 | 1000 | 40 | 48 | 435×689×219 |
| PRL50-1000-80C | 50 | 1000 | 80 | 96 | 600×1000×1370 |
| PRL75-1000-120C | 75 | 1000 | 120 | 144 | 600×1000×1370 |
| PRL100-1000-160C | 100 | 1000 | 160 | 192 | 600×1000×1370 |
| PRL100-1000-160 | 100 | 1000 | 160 | 192 | 800×1000×1955 |
| PRL125-1000-200 | 125 | 1000 | 200 | 240 | 800×1000×1955 |
| PRL150-1000-240 | 150 | 1000 | 240 | 288 | 800×1000×1955 |
| PRL175-1000-280 | 175 | 1000 | 280 | 336 | 800×1000×1955 |
Technical Features
Unprecedented high-dynamics load simulator with regenerative load functioning and combining the advantages of both conventional linear and switch-mode programmable electronic load, developed specifically for AI data center validation.
Dual Voltage Rating Platforms Respectively for Power Nodes and HVDC/SST Architectures
Available in both 80V and 1000V platforms, the PRL high-dynamic regenerative DC load simulator targets the full spectrum of data center testing - from current computing power nodes and components to next-generation HVDC and SST (Solid-State Transformer) architectures.
Both versions share the signature advantages of the PRL series: seamlessly integrating the extreme dynamics of linear loads with the energy-saving regeneration of switching-mode loads. Housed within a compact 5U chassis, the system delivers uncompromised performance, ultra-fast response times, high precision, and significantly reduced heat generation.
Regenerative Load Functioning with Performance Parallelling that of Linear Architecture
The PRL series shatters the traditional trade-off between ultra-fast dynamics and energy recovery. While conventional linear architectures provide exceptional speed at the cost of massive heat dissipation, the PRL series matches their high-frequency capabilities while continuously feeding clean power back into the grid:
- No-Compromise Peak Efficiency: Max. energy regeneration efficiency of 87.1% under rated conditions.
- Grid-Friendly Operation: Stable grid-side Power Factor (PF ≥ 0.99), reliable energy feedback without polluting the facility's power network.
- Unmatched High-Frequency Recovery: >70.35% regenerative efficiency during severe 1kHz dynamic full-load testing.
| Test Project | Specific Test Item | Test Data | Waveform |
|---|---|---|---|
| 12kW PSU Regenerative Efficiency Test | 100% Steady-state Load (245A) | Measured regenerative efficiency: 87.1% |  |
| 10%~100% 1kHz Dynamic Test (25-245A) | Measured regenerative efficiency: 70.35% | |
|
| 72kW PSU Regenerative Efficiency Test | 100% Steady-state Load (1440A) | Measured regenerative efficiency: 84.85% |  |
| 10%~120% 1kHz Dynamic Test (144-1728A) | Measured regenerative efficiency: 67.31% |  |
High-Power Density and Robust Over-Load Capability
A 5U standard chassis of PRL Load Simulator packs rated power of 18.5 kW and 25 kW respectively for 80V and 1000V version, and operates for testing environment where space utilization matters for overall effectiveness.
Beyond its space-saving design, the system features uncompromised ruggedness, boasting a 1.6x transient continuous overload capability for 2 milliseconds - a functional feature for testing against intense, instantaneous peak pulse currents that aligns with the shifting operation and power demands of real-world data center.
Modular Cabinet Parallel Scalability to Reach 175 kW from Single Cabinet
With the 5U modular chassis functioning as the core building block, the PRL series offers scalable cabinet options up to a 175 kW power rating by connecting a maximum of 7 modules in parallel. Remarkably, a fully populated single cabinet with 7 paralleled units features highly compact dimensions of only 800 × 1000 × 1955 mm (W×D×H). The parallel configuration maintains the system's microsecond-level dynamic response and high regeneration efficiency, without compromising testing performance at any power scale.
Inter-Cabinet Scalability for MW-Scale AI Server Load Power Testing
With a maximum of 7 modules of 5U building block paralleled in a single cabinet, PRL further allows inter-cabinet master-slave parallel for reaching higher MW-scale power rating with a maximum of 8 cabinnets connected as a testing platform that offers 1.4 MW.
High Dynamic Response Far Beyond OCP ORV3 Requirements
ActionPower steps ahead of specifications and requirements proposed in OCP ORV3 with PRL as a future-proof testing platform for validating modern AI data center infrastructure. The PRL series offers a peak current slew rate of up to 60 A per μs for use cases and testing application against 50V/54V AI power nodes, which is 10 times faster than what the standard requires as 6 A per μs threshold. A table below demonstrates in detail how each voltage platform versions outperforms the specifications as per OCP ORV3.
Applications
Discover the use cases and testing applications of PRL high-dynamic load simulator against various power nodes and architectures in AI data center
Comprehensive AI Data Center Use Cases and Testing Application Ecosystems
As AI data centers evolve toward higher-density power delivery networks (PDN) to support soaring computational loads, validating the entire power architecture from the facility level down to the server rack is critical. Aligning perfectly with modern data center topologies, the PRL series provides a complete, end-to-end testing ecosystem spanning both high-voltage distribution and extreme-dynamic compute nodes:
- HVDC Architecture Validation (PRL 1000V Series): Strategically positioned at the facility distribution level, this platform is tailored for testing next-generation Solid-State Transformers (SST) and High-Voltage DC (800V/400V) distribution systems. It ensures the efficiency and stability of bulk power transmission before it enters the rack.
- Rack-Level & Compute Node Validation (PRL 80V Series): Operating at the critical 50V/54V DC distribution node, this platform is specifically engineered to test the Power Shelf (AC-DC / DC-DC PSUs). It provides the ultra-fast, high-slew-rate dynamic simulation required to replicate the severe, microsecond-level transient power steps of server boards, OAMs, and localized CPU/GPU workloads (VRM/PoL).
Specifications
The following specifications are subject to modifications and changes without notification in advance. All specifications measured are at product's maximum ratings, if not otherwise noted.
General Specifications
| 80V Architecture | 1000V Architecture | |
|---|---|---|
| Rated Power Range (kW) | 18.5~129.5 kW | 25~175 kW |
| Voltage Range (V) | 0~80 V | 0~1000 V |
| Max. Continuous Current Range (A) | 400~2800 A | 40~280 A |
| Max. Regenerative Efficiency | 85% | |
Range Readback Function
| 80V Architecture | 1000V Architecture | |
|---|---|---|
| Voltage Readback Value | ||
| Resolution (mV) | 0.1 | |
| Accuracy | ± (0.02% + 0.02% F.S.) | |
| Current Readback Value | ||
| Resolution (mA) | 0.1 | |
| Accuracy | ± (0.05% + 0.05% F.S.) | |
| Power Readback Value | ||
| Resolution (W) | 0.01 | |
| Accuracy | ± (0.2% + 0.2% F.S.) | |
Protection Parameters
| Over Power Protection | 0~165% F.S. (±0.4% F.S.) |
|---|---|
| Over Current Protection | 0~165% F.S. (±0.1% F.S.) |
| Over Voltage Protection | 0~105% F.S. (±0.04% F.S.) |
| Over Temperature Protection | Ambient temperature: 40℃, Heatsink temperature: 100℃ |
External Interfaces
| Front Panel USB Interface | Software Upgrade |
|---|---|
| Communication Interface | LAN |
| Communication Protocol | SCPI |
Mechanical Parameters
| 80V Architecture | 1000V Architecture | |
|---|---|---|
| Width × Depth × Height (mm) | 435×689×219 / 600×1000×1370 / 800×1000×1955 | |
| Weight (kg) | 65~750 | |
AC Input Parameters
| Voltage (VAC) | 340~480 VAC |
|---|---|
| Frequency (Hz) | 47~63 Hz |
| Wiring Configuration | 3/PE (Three-phase four-wire) |
| Connector Type | Three-position output connector |
Operation Mode
| 80V Architecture | 1000V Architecture | |
|---|---|---|
| Constant Current Mode (CC) | ||
| Resolution (mA) | 1 | |
| Accuracy | ± (0.05% + 0.05% F.S.) | |
| Constant Resistance Mode (CR) | ||
| Range (Ω) | 0.02~2000 | |
| Resolution (Ω) | 0.001 | |
| Accuracy | ± (Vin/Rset * (0.2%) + 0.2% I F.S.) | |
| Constant Power Mode (CP) | ||
| Resolution (W) | 0.01 | |
| Accuracy | ± (0.2% + 0.2% F.S.) | |
| Dynamic Mode (CCD) | ||
| Peak Power Overload | 1.6× for 2 ms / 1.4× for 50 ms | |
| T1 & T2 | 0.02 ms~100 s | |
| Resolution (μs) | 1 | |
| Accuracy | 1 μs + 100 ppm | |
| Max. Rise/Fall Slew Rate | Model-dependent, up to 168 A/μs | Model-dependent, up to 16.5 A/μs |
| Slew Rate Resolution (mA/μs) | 1 | |
| Min. Rise Time | ≤6 / ≤10 / ≤15 μs, model-dependent | ≤8 / ≤10 / ≤15 μs, model-dependent |
| Other | ||
| Current Accuracy | ±0.2% F.S. | |
Miscellaneous
| Dynamic Load Testing, Sequence Programming, Dynamic Scanning, Over Current Protection (OCP), Over Power Protection (OPP) Testing |
Environmental Parameters
| Operating Temperature | 0 ~ +35℃ |
|---|---|
| Storage Temperature | -20 ~ +60℃ |
| Operating Humidity | 5 ~ 90% RH (Non-condensing) |
| Operating Altitude | ≤ 2000m |
| Cooling Method | Intelligent forced-air cooling, with front intake and rear exhaust |
Empowering Next-Gen AI Data Centers with Comprehensive Testing Solutions
Empowering hyperscale AI facilities with ActionPower’s rugged hardware capability. Providing up to MW/MVA power of scalable, high-precision dynamic load emulation, we bridge the gap between product performance and system reliability. Click to explore our full AI Data Center testing solutions.
Access our Download Center and Find Out Related Data Sheets
From detailed integration manuals to the latest firmware, our Download Center provides the technical depth required for high-precision power electronics development. Enhance your ActionPower systems today.
APPLY FOR MORE INFORMATION ABOUT AI DC LOAD SIMULATOR
Sales Network & Locations
If you are looking for an automated test system to validate your products during development and research stages to make sure of their successful commercial launch, ActionPower will be at your disposal to study your specifications and requirements to provide either standard or customized testing solutions.
Join Our Network as a Distributor?
Interested in ActionPower's testing solutions and equipment and want to promote them in your market? Contact us to joint our global sales network to grow together as partners.
