High-Current REOLAB System Enables Precise 10,000 A Testing at a Global Test Laboratory

Application

Electrical testing laboratories | High-current certification testing | Switchgear and control gear assemblies

Products Used

REOLAB high-current power supply system (tailored configuration)

Background

Independent test houses play a vital role in electrical safety and performance verification for Switchgear, distribution panels, and control cabinets. Certification to standards such as EN 61439-1/2 requires the ability to subject assemblies to extreme thermal and mechanical stresses using controlled high-current sources.

REO UK was approached by a globally recognised test laboratory seeking a high-current testing solution capable of delivering up to 10,000A for certification performance evaluation.

The Testing Context

High-current testing is essential to verify mechanical strength and thermal performance under fault and rated current conditions. As current increases, electromagnetic forces rise significantly, placing extreme stress on busbars, bolted joints, and insulation systems.

The laboratory’s existing infrastructure could not reliably or safely deliver the required current levels for repeatable certification testing.

The Challenge

The test house required a power source capable of delivering up to 10,000A continuously with precise control, stable waveform characteristics, and a compatibility with automated test procedures, while ensuring operator safety.

The REO Solution

REO UK engineered a tailored REOLAB high-current power supply system incorporating a dedicated compensation unit. The system delivers stable, controllable high current while reducing reactive losses and improving test repeatability. The solution was integrated with the laboratory’s existing test processes, including current ramp profiles, safety interlocks, and data capture systems.

Results & Benefits

• Accurate, repeatable high-current testing up to 10,000 A
• Compliance testing aligned with EN 61439-1/2 requirements
• Reduced time to certification and improved test efficiency

According to the laboratory’s engineering team. “The REOLAB system significantly enhanced our ability to perform reliable high-current testing against EN 61439 requirements.”

Engineering Support for Electrical Test Technology

REO UK supports test laboratories and manufacturers with application-specific high-current power  solutions, helping ensure reliable, repeatable verification of electrical products under extreme operating conditions.