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The imperative for efficient energy transmission across vast distances has escalated, propelling manufacturers into intensified research, development, and production endeavors to create components capable of withstanding and transmitting higher voltages with optimal efficiency.

Amidst this landscape, KEMA Labs High-Voltage laboratories stands tall as a globally recognized and independent facility dedicated to rigorous testing and certification of medium and high voltage components essential for bolstering electrical infrastructure resilience and performance.

Our state-of-the-art laboratories boast a comprehensive suite of testing capabilities, encompassing a wide array of components vital to electrical systems. In addition to cables, cable accessories, insulators, power transformers, instrument transformers, GIS, switchgear, and panels, our facilities can also accommodate the testing of emerging technologies and innovative solutions.

Furthermore, our commitment to excellence extends beyond mere testing; we provide comprehensive support throughout the product life cycle, from initial design consultation to ongoing performance monitoring. Our team of experts offers tailored solutions and insights to optimize component design, performance, and reliability.

With multiple flexible test bays and a robust infrastructure, we have the capacity to serve the diverse needs of our clients efficiently. Whether it’s testing for compliance with industry standards or custom evaluations tailored to specific project requirements, our laboratories are equipped to deliver accurate, reliable, and timely results.

Moreover, our collaborative approach fosters partnerships with industry stakeholders, facilitating knowledge sharing and driving innovation in the realm of high-voltage engineering. By leveraging our expertise and resources, clients can gain a competitive edge in the rapidly evolving energy landscape while ensuring the integrity and safety of their electrical systems.

In summary, KEMA Labs High-Voltage Laboratories not only provides unparalleled testing and certification services but also serves as a trusted partner in advancing the reliability, efficiency, and sustainability of electrical infrastructure worldwide.

US Laboratory Capabilities

Lab Capabilities
Short-Circuit Testing
High Voltage: ≤ 245kV, ≤ 63kA (Synthetic / In Development)
Medium Voltage: ≤ 72kV, ≤ 63kA
Low Voltage AC: ≤ 2.4kV, ≤ 275kA
Low Voltage DC: ≤ 1.6kV, ≤ 230kA
Dielectric Testing
Lightning Impulse: 1.4MV
Switching Impulse: 900kV
AC Dry Power Frequency: 600kV, 4000mA
AC Wet Power Frequency: 250kV, 600mA
DC Withstand: 130kV, 10mA
Load Switching Testing
Medium Voltage:  ≤ 38kV, ≤ 5kA
Thermal Testing
Up to 12kAAC , 3f, 60Hz at less than 32V
Up to 8kADC  at less than 48V
Capacitor Switching Testing
High Voltage:  72.5kV, 550A (Single Phase)
Medium Voltage:  38kV, 1,260A (Three Phase)
Medium Voltage:  15kV, 2,000A (Three Phase)
Test Frequencies
16.67Hz, 25Hz, 50Hz & 60Hz
Types of Tests Offered
  • Short-Circuit Interruptions
  • Fault-making Current
  • Cable & Line Current Switching
  • Capacitor Current Switching
  • Synthetic Method (In development)
  • Internal Arcing Fault Resistance
  • Momentary & Short-Time Withstand
  • Audible Sound
  • Transformer Short-Circuit
  • Transformer Routine Testing (In development)
  • Transformer Rectifier Unit Testing
  • Electrical Endurance
  • Lightning & Switching Impulse
  • Power Frequency (Wet & Dry)
  • Partial Discharge, Corona, RIV
  • Thermal Current
  • Rain Test
Types of Equipment Tested
  • Switchgear, Panel Boards & Switchboards
  • Circuit Breakers
  • Load Break Switches
  • Fault Interrupters
  • Reclosers
  • Capacitor Switchers
  • Surge Arrestors
  • Current Limiting & Cut Out Fuses
  • BusDuct / Busways / Cable Ways
  • Distribution Transformers
  • Transformer Rectifier Units
  • Reactors
  • Motor Controllers
  • Cables & Grounding Assemblies
  • Pantographs
  • Generator Terminal Enclosers
Test Standards
  • A2LA – Certificate Number 0553.01
  • ISO 17025
  • UL Third Party Test Data Program (TPTDP)

United States-based Testing Facilities Specializing in High-Voltage and High-Power Testing

Our Advanced Power Laboratory is renowned for its capacity to generate short circuit outputs reaching 245kV/63kA, demonstrating our cutting-edge expertise in managing extreme testing scenarios. Simultaneously, our High-Voltage Testing Facility excels in delivering premium dielectric examination services up to 230kV, seamlessly complementing the high-energy tests to provide a comprehensive range of diagnostic assessments. Together, these cutting-edge capabilities are strategically positioned to meet the evolving demands of the US power network, conducting indispensable investigations that ensure the dependability and security of electrical apparatuses nationwide.

High-Power Testing Laboratories – World-Class Service

KEMA LABs sets the global standard with its High-Power Laboratories, offering a spectrum of testing services from short circuit and switching tests to short time current evaluations based on international and regional benchmarks. Our facilities are scattered across various strategic locations worldwide, boasting short circuit power capabilities ranging from 2,000 to an unparalleled 15,000 MVA three-phase. This wide-ranging capacity marks us as the most versatile independent third-party test laboratory globally. Our team of adept test engineers combines industry-leading technology with profound expertise to deliver tests that are not only flexible and efficient but also cost-effective, ensuring your components meet the highest standards of transmission and distribution.

USA-based High-Voltage Testing Solutions – Cutting-Edge Capability

As the requirement for energy transmission across extensive distances escalates, so does the need for grid components that can function at higher voltages. KEMA Labs’ High-Voltage Testing Facilities emerge as pioneers in this domain, acknowledged globally as a foremost independent provider for testing and certifying medium and high-voltage components vital to electrical infrastructure. Our capability to test a diverse array of components — spanning from cables and insulators to power transformers and switchgear — is unparalleled.

Our extensive client base, which includes most major equipment manufacturers, demonstrates our role as a pivotal contributor to the advancement of worldwide electrical infrastructure benchmarks.

High Voltage Ratings

US Dielectric test Ratings (IEC 60060-1 and IEEE Standard 4)

  • AC up to 600 kV
  • LI up to 1.4 MV
  • SI up to 900 kV
  • RIV/Corona test up to 600 kV AC