AI Data Center Power Testing & Validation

Artificial intelligence is rewriting the rules of data center power. As AI compute clusters drive rack power from hundreds of kilowatts toward megawatt-class levels, the industry is evaluating 800 V DC distribution, solid-state transformers (SSTs), high-voltage power shelves, and battery backup units (BBUs) that must operate together under extreme, fast-changing loads. Before this hardware reaches a live facility, it must be validated under realistic high-voltage, high-dynamic conditions.

AMETEK Programmable Power helps qualification teams, lab managers, and power-electronics engineers validate next-generation data center power systems across the grid-facing AC input, high-voltage DC distribution, battery backup, power-conversion, and rack-level power chain. The portfolio includes Sequoia Series regenerative AC grid simulators, Mi-BEAM modular bidirectional regenerative DC systems, the integrated Mi-BEAM Power Rack Series, and i-BEAM high-power bidirectional regenerative DC systems.

Regenerative Test Solutions for AI Data Center Power

AMETEK Programmable Power delivers four complementary regenerative solutions that together cover the data center power chain, from grid-facing AC input to high-power DC distribution, battery backup, energy storage, and scalable production validation.

Specification Sequoia SeriesRegenerative AC Grid Simulator Mi-BEAM SeriesModular Bidirectional Regen DC Mi-BEAM Power Rack SeriesIntegrated Modular Bidirectional Regen DC i-BEAM SeriesHigh-Power Bidirectional Regen DC
Type Regenerative AC grid simulator Modular bidirectional regenerative programmable DC power system Integrated modular bidirectional regenerative DC power system High-performance bidirectional regenerative programmable DC power system
Voltage 0–333 VAC 80 V to 2,000 V 80 V to 2,000 V Up to 1,500 V
Current 0 A to 3,000 Arms/phase ±50 to ±1,000 A; scalable through parallel operation Up to ±7,000 A per rack Up to ±1,200 A; up to ±2,400 A in parallel
Power 15 kVA to 5 MVA 10 kW to 37.5 kW per unit 37.5 kW to 262.5 kW per rack; scalable up to 8.6 MW Up to 650 kW per system; scalable up to 5 MW
Regeneration Up to 85% regenerative efficiency Up to 95% regenerative efficiency Up to 95% regenerative efficiency Up to 96% regenerative efficiency
Highlights Grid simulation including sags, swells, frequency deviation, phase imbalance, and harmonics Modular scalability for HVDC distribution, BBU/BESS cycling, DC-DC converter testing, and production validation Integrated power distribution; rack- and branch-level circuit breakers; Emergency Power Off (EPO); CE and NRTL certification; optional output isolation and polarity detection High-power source/sink for HVDC, battery, power-shelf, and converter validation

Sequoia Series — Regenerative AC Grid Simulator

The California Instruments Sequoia Series is a precision programmable regenerative AC grid simulator designed for realistic utility-grid simulation and disturbance testing. With 0–333 VAC output, 0–3,000 Arms/phase current capability, and scalable power from 15 kVA to 5 MVA, Sequoia validates front-end AC/DC conversion stages, SST development, online UPS systems, grid-interactive equipment, and high-power AC input behavior under real-world line conditions.

i-BEAM Series — High-Power Bidirectional, Regenerative DC Power System

The Sorensen™ i-BEAM Series is a high-performance, bidirectional, regenerative programmable DC power system for high-power source/sink testing. With output voltage up to 1,500 V, bidirectional current up to ±1,200 A, and parallel current up to ±2,400 A, i-BEAM supports systems from 60 kW to 650 kW and parallel configurations scalable up to 5 MW. Available in one-, two-, or four-channel configurations, i-BEAM supports demanding HVDC, battery, power-shelf, converter, and automated test applications. An internal DC link enables power sharing between channels, and each channel can operate as a source or sink.

Mi-BEAM Series — Bidirectional, Regenerative DC Power System

The Sorensen™ Mi-BEAM Series is a high-performance, modular, bidirectional, regenerative programmable DC power system for scalable DC source/sink testing. Available voltage classes span 80 V to 2,000 V, with individual units delivering 10 kW to 37.5 kW and ±50 to ±1,000 A, depending on the model. Mi-BEAM supports HVDC distribution, BBU/BESS cycling, DC-DC converter testing, and production validation.

Mi-BEAM Power Rack Series — Integrated High-Power DC Test System

The Sorensen™ Mi-BEAM Power Rack Series integrates up to seven Mi-BEAM power modules in a preconfigured 42U cabinet for scalable, high-power source and regenerative load testing. Each rack delivers up to 262.5 kW and 7,000 A, with parallel systems scalable to 8.6 MW+*. Integrated power distribution, rack- and branch-level circuit breakers, Emergency Power Off (EPO), CE and NRTL certification, and optional output isolation and polarity detection support safe, serviceable deployment in demanding AI data center, battery, energy-storage, and power-conversion test environments.

*Maximum current depends on model voltage, power rating, and system configuration. Approximately 231 kA applies to a fully configured 8.6 MW parallel system at 80 V. Consult the factory for system configuration.

Infographic titled 'Testing the Power Behind AI Data Centers' showing the data center power chain from grid input to AI boards, side-by-side Sequoia Series, i-BEAM Series, and Mi-BEAM Series specification cards, key stats including Sequoia 0-333 VAC and 15 kVA-5 MVA, i-BEAM up to 650 kW / 1.3 MW and plus-minus 1,000 A / plus-minus 2,000 A parallel, Mi-BEAM up to 2,000 V and 8.6 MW+ parallel scalability, and application areas including solid-state transformers, HVDC power shelves, BESS/BBU cycling, and grid disturbance testing.

Select the image to view it at full size.

Figure 1 — The data center power chain and how Sequoia, i-BEAM, Mi-BEAM, and Mi-BEAM Power Rack solutions map to it.

Data Center Power Architecture Trends

The AI build-out is driving significant growth in data center electrical demand. Hyperscale and colocation operators are re-architecting the entire power chain, from the utility feed to the point-of-load converter on the accelerator board, to deliver more power efficiently within a shrinking physical footprint.

Key shifts reshaping data center power architectures include:

  • Higher-voltage distribution — Facility level power distribution is moving toward an 800 V DC bus to reduce power conversion efficiency losses.
  • New conversion topologies — Solid-state transformers and HVDC power racks replacing conventional line-frequency transformers.
  • Energy storage integration — Battery energy storage systems (BESS) and BBUs providing ride-through and load stabilization for volatile AI workloads.
  • Extreme rack density — Rack-level power climbing past 100 kW, demanding compact, low-loss interconnects and thermal headroom.
  • Sustainability pressure — Growing energy demands force data centers to increase power conversion efficiency to improve overall energy utilization

Each of these shifts introduces new validation challenges that legacy, dissipative test equipment was never designed to handle.

Testing and Validation Challenges

High-voltage, high-power validation

Emulating 800 V DC rail behavior and testing SSTs, power shelves, and HVDC racks require sources and loads that operate cleanly at system voltage and full power.

Fast, dynamic load transients

AI compute clusters create rapid, large-magnitude load steps. Test systems must reproduce these transients and maintain control-loop stability to reveal real-world behavior.

Bidirectional power flow

BESS, BBUs, and modern converters push and pull energy. Validation requires seamless source-to-sink transitions, not one-directional supplies.

Energy, heat, and space costs

Conventional dissipative loads waste energy as heat, driving up HVAC load and consuming valuable lab floor space during continuous testing.

Grid disturbance and compliance testing

Front-end AC/DC stages must be proven against sags, swells, frequency deviations, harmonics, and phase imbalance before deployment.

Scalability from R&D to production

Teams need a portfolio that scales from a single-chassis bench setup to integrated rack-level and multi-megawatt system validation without re-tooling.

Benefits for Data Center Power Testing Teams

  • Test at system voltage — Sequoia supports 0–333 VAC grid simulation, while i-BEAM, Mi-BEAM, and the Mi-BEAM Power Rack support high-voltage DC validation for modern 800 V DC and HVDC architectures.
  • True bidirectional capability — Four-quadrant AC and bidirectional DC operation reproduce the push-pull energy flows of BESS, BBUs, and modern converters.
  • Energy recovery, not heat — Regenerative operation returns energy to the mains rather than dissipating it through conventional resistive loads, helping reduce facility power consumption, heat generation, and cooling demand during sustained high-power testing.
  • Scalable power coverage — Mi-BEAM models are available from 10 kW to 37.5 kW per unit. The Mi-BEAM Power Rack integrates up to seven Mi-BEAM modules for as much as 262.5 kW per rack, with parallel systems scalable to 8.6 MW+.
  • Fast, precise dynamics — Sequoia supports programmable grid transients, while select Mi-BEAM and Mi-BEAM Power Rack configurations support current slew rates up to 230 A/µs.*
  • Scalable from R&D to production — The portfolio supports applications ranging from individual test stations to integrated rack-level and multi-megawatt validation systems.
  • Mi-BEAM automation and simulation tools — Mi-BEAM includes battery test, battery simulation, and solar-array simulation software, with LAN, USB, CAN, and RS-232 interfaces for system integration.

*Maximum slew rate is model- and configuration-dependent. Consult the factory for applicable rise/fall-time and slew-rate performance.

AI Data Center Power Test Applications

Application Recommended Platform What It Validates
Solid-State Transformer (SST) testing Sequoia plus i-BEAM, Mi-BEAM, or Mi-BEAM Power Rack AC input behavior, conversion efficiency, thermal performance, DC output behavior, and transient response under programmable grid and load conditions
800 V DC power rail / HVDC rack emulation Mi-BEAM, Mi-BEAM Power Rack, or i-BEAM Dynamic load transitions at system voltage with energy recovery
Power shelf and PSU validation i-BEAM or Mi-BEAM Source/sink behavior, efficiency, and protection under dynamic load
High-power rack or multi-rack validation Mi-BEAM Power Rack Integrated rack-level and multi-rack source/sink operation at high power
Battery energy storage system and BBU testing Mi-BEAM, Mi-BEAM Power Rack, or i-BEAM Charge/discharge profiles, ramp rates, bidirectional flow, and safety limits
Front-end AC/DC and online UPS testing Sequoia Series Ride-through against sags, swells, frequency deviation, and harmonics
Grid disturbance and compliance testing Sequoia Series Voltage and frequency events, phase imbalance, harmonic conditions, and other programmable disturbances used in compliance-oriented test programs
DC-DC and point-of-load converter testing i-BEAM or Mi-BEAM Input and output regulation, conversion behavior, protection response, and transient performance under representative AI load conditions

Data Center Power Testing Insights

Representative data points that frame the opportunity and the value of regenerative testing:

  • Toward megawatt-class racks — AI infrastructure is driving rack power beyond traditional data center levels, accelerating development of higher-voltage distribution and 800 V DC architectures.
  • 95% energy recovery — Up to approximately 95% of test energy can be returned to the mains with Mi-BEAM regeneration, versus dissipation as heat in conventional loads.
  • High-power DC scalability — Mi-BEAM provides 10 kW to 37.5 kW per unit, while the Mi-BEAM Power Rack delivers up to 262.5 kW per rack and parallel rack systems scale up to 8.6 MW.
  • High-current rack capability — Mi-BEAM Power Rack configurations support up to 7,000 A per rack, with current and total system capacity scalable through parallel operation.
  • Full-chain coverage — Sequoia regenerative AC grid simulation, i-BEAM high-power DC capability, Mi-BEAM modular DC capability, and the integrated Mi-BEAM Power Rack cover the AC-to-HVDC data center power chain.
Two-panel data chart: left panel shows AI rack power density rising from 8 kW in 2019 to 130 kW in 2027, crossing the 100 kW threshold that drives the shift to 800 V DC distribution; right panel compares cumulative net energy over a 24-hour, 100 kW test cycle, showing a conventional dissipative load rising steeply while a Mi-BEAM regenerative system stays near zero due to about 95% energy recovery.

Select the image to view it at full size.

Figure 2 — Increasing AI rack power density and the energy-efficiency advantages of regenerative testing.

Related Data Center Power Test Solutions

Explore complementary AMETEK Programmable Power platforms and resources relevant to data center power validation:

  • i-BEAM Series — High-power bidirectional regenerative programmable DC systems with output voltage up to 1,500 V, current up to ±1,200 A per system and up to ±2,400 A in parallel, and parallel power scalability up to 5 MW for HVDC, battery, converter, and power-shelf validation.
  • Mi-BEAM Series — Modular bidirectional regenerative programmable DC systems with 80 V to 2,000 V voltage classes and ±50 to ±1,000 A, depending on the model.
  • Mi-BEAM Power Rack Series — Integrated rack-level systems with up to seven Mi-BEAM modules, 262.5 kW and 7,000 A per rack, and parallel scalability up to 8.6 MW.
  • Bidirectional and Regenerative Systems — Category overview of source/sink platforms.
  • Battery Cyclers and Battery Simulators — Solutions for BBU, BESS, and energy-storage validation.
  • Electronic Loads — Solutions for load emulation and standards testing.
  • Sequoia Series — Regenerative AC grid simulation for front-end power conversion, UPS, and grid-disturbance testing.

Validate AI data center power architectures, including SST, 800 V DC, BESS, BBU, UPS, and rack-level power systems, with Sequoia AC grid simulators, Mi-BEAM modular regenerative DC platforms, the Mi-BEAM Power Rack Series, and i-BEAM high-power regenerative DC systems. Discuss your data center test requirements.