Breakdown and endurance

Applications:

  • Dielectric breakdown strength determination
  • Electrical endurance and lifetime assessment
  • Evaluation of insulation performance under AC, DC, and impulse stresses
  • Investigation of aging and degradation mechanisms
  • Characterization of polymeric dielectrics, nanocomposites, and cable insulation materials
  • Qualification of insulating materials for high-voltage and HVDC applications
  • Research and development of advanced electrical insulation systems

Breakdown and Endurance Testing

The laboratory is equipped with advanced facilities for the evaluation of the dielectric breakdown strength and electrical endurance of insulating materials under AC, DC, and impulse voltage stresses. These tests are essential for assessing the reliability, safety, and lifetime of dielectric materials used in power systems, electrical equipment, and high-voltage insulation applications.

Special focus is devoted to polymeric insulation systems, where breakdown and endurance measurements provide key information on insulation performance, aging resistance, and long-term behavior under severe electrical stresses. The facility enables the investigation of material degradation mechanisms and supports the development of advanced insulating materials for next-generation energy technologies.

 

 

 

Available facilities:

  • DC high-voltage generators up to 200 kV
  • AC high-voltage generators up to 100 kV (50 Hz)
  • High-frequency AC testing up to 30 kVpp (10 kHz)
  • Impulse voltage testing up to 600 kV

Electrical Endurance of Polymeric Insulating Materials

Electrical endurance describes the ability of a polymeric insulating material to withstand electrical stress over time without failure. Endurance testing is used to evaluate long-term reliability and predict the service lifetime of insulation systems. These studies support the development of advanced insulation systems for power cables, electrical machines, transformers, and power electronic equipment.

Key activities:

  • Electrical lifetime assessment under AC, DC, and impulse voltages
  • Investigation of aging and degradation mechanisms
  • Partial discharge and electrical treeing endurance
  • Combined thermal-electrical aging studies
  • Lifetime prediction and reliability modeling
  • Qualification of materials for MV, HV, and HVDC application.

 

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