Materials characterization

Electrical Characterization of Insulating Materials for Electrical Systems

The laboratory offers comprehensive facilities for the electrical characterization of dielectric materials and insulation systems used in electrical apparatuses and power transmission technologies. Through a combination of advanced diagnostic and testing techniques, the laboratory investigates the electrical behavior, reliability, and lifetime of insulating materials under a wide range of operating conditions.

Particular emphasis is placed on polymeric insulation systems, supporting the development of advanced materials for high-voltage equipment, power cables, electrical machines, and emerging energy applications. Research activities range from the evaluation of fundamental dielectric properties to long-term aging studies and lifetime assessment.

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Short-term electrical characterization:

• Dielectric strength and breakdown voltage measurements
• Space charge accumulation and decay analysis
• DC conductivity and leakage current measurements
• Broadband Dielectric Spectroscopy (BDS)
• Polarization and depolarization current measurements
• Dielectric permittivity and dielectric loss characterization.

Long-term performance assessment:

• Electrical, thermal, and mechanical endurance testing
• Electrical life testing under accelerated aging conditions
• Partial discharge endurance evaluation
• Aging investigation and lifetime modeling of insulating materials and systems

Cable insulation and interface characterization:

• Evaluation of model systems representative of cable joints and interfaces
• Partial discharge activity analysis
• Space charge accumulation and decay measurements
• Conduction and leakage current investigations