What is the Insulation Department?

The Insulation Department is a part of the Energy Division of the Power Engineering Institutes - National Research Institute, and conducts research to improve methods and criteria for evaluating the insulation quality of rotating windings of high-voltage electric machines.

What does the Insulation Department do?

We offer a comprehensive range of services, including:

  • Diagnostic testing of high-voltage electrical machines, particularly the insulation of windings in large turbogenerators and hydrogenerators,
  • Off-line and on-line testing and analysis of partial discharge activity in generator stator winding insulation,
  • Testing and measurement of dielectric parameters of materials, insulation systems, and winding components,
  • Expert evaluations based on testing results and assessments of the technical condition of generator winding insulation,
  • Technical supervision of the manufacturing of new generator stators and rotors, as well as the maintenance and modernization of existing high-voltage rotating machinery,
  • Testing, measurement, and acceptance testing of new, overhauled, and rewinded generators, along with post-failure diagnostics and expert reports,
  • Operational, maintenance, and modernization recommendations for generator operators focusing on insulation systems,
  • Investigation of the effects of electrical and thermal stress on high-voltage winding insulation and aging tests on insulation components,
  • Development of technologies related to insulation systems and corona protection for generator windings.

Read about our research and implementation work

Why should you choose our services?

The plant has a qualified staff of specialists in the field of insulating materials, insulating system manufacturing technology and high-voltage machine design.

Insulation Department

3 Prząśniczki Street

61-070 Poznań

Phone: +48 61 852 52 04

Head of the Department 

Krzysztof Pietrzak

Mobile.: +48 602 241 411


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