The rapid expansion of AI data centers is driving server rack power demands from kilowatt levels toward the megawatt range, creating unprecedented challenges for power testing. Chroma's new 63700H High Speed Regenerative DC Load System addresses these demands with fast dynamic response, energy recovery, and scalable power capacity. Designed for AI server power supplies, HVDC power racks, and solid-state transformers (SSTs), the 63700H enables validation under the most demanding operating conditions.

Addressing Three Key Challenges in AI Power Testing

• Fast Response for Dynamic AI Workloads
  Fast current response and precise control enable the 63700H to simulate the transient power demands of intensive AI computation, supporting EDPP testing and GPU workload simulation.
• Peak Power Testing
  The 63700H supports the following peak power levels to help verify power supply stability and reliability under extreme operating conditions:
  • 160% rated power for 1ms
  • 140% rated power for 50ms
  • 120% rated power for 30s
• Up to 85% Energy Regeneration Efficiency
  By returning energy to the grid during testing, the 63700H reduces energy consumption and cooling requirements, helping customers meet energy conservation and ESG goals.

Scalable Power Rack Testing up to the MW-Scale

The 63700H uses a modular rack design with up to 120kW per cabinet (up to 180kW for steady-state testing). Synchronized master-slave control enables multiple cabinets to operate in parallel, allowing users to scale test capacity to hundreds of kilowatts and into the megawatt range.

Deployed in an HVDC Power Rack Test Lab

A leading global power supply manufacturer has successfully deployed the Chroma 63700H in its HVDC power rack test laboratory, achieving 1,080kW of continuous test capacity and up to 1,728kW of peak capacity.

▲Parallel Configuration of Multiple 63700H Cabinets for MW-Scale Testing

Connected in parallel to a power rack under test, multiple 63700H systems support extended steady-state testing and dynamic load simulation. This configuration enables users to evaluate AI power system stability and reliability under sustained high-power operation and rapidly changing loads. Applications include:

• High-power validation of HVDC power racks
• AI data center power testing
• Extended reliability testing
• Dynamic load and transient testing

As AI power requirements rise, validation must go beyond basic functionality to evaluate system performance at operating limits. Combining fast dynamic response, efficient energy recovery, and MW-scale capacity, the 63700H provides a powerful test platform for developing and validating AI server power supplies, HVDC power systems, and SST power conversion systems, helping customers secure a decisive competitive edge in next-generation power applications.

Explore the Chroma 63700H High Speed Regenerative DC Load System using the product link below, or share your requirements and contact details to connect with our team. We look forward to serving you.