Electrical Tests on Solid Insulation Material

ENPAY Insulation Laboratories offers high voltage tests on materials, components and tailor-made samples. A calibrated AC test system with a maximum test voltage of 200 kV and its DC extension providing up to ± 350 kV DC enables for conducting high voltage tests on broad variety of insulation materials.

Both arrangements are combined with partial discharge (PD) test arrangement with a base noise level at approximately 1-2 pC thanks to advanced noise reduction.

Specific Tests Designed According to Customer Requirements

Highly experienced staff and constantly improved equipment enables for reliable tailor-made tests meeting customer or new standard requirements.


Sample Preparation and Conditioning

Wide range of equipment and facilities can be used to prepare samples exactly meeting conditions of sample requirements.

An advanced sizing equipment used in insulation component industry is also used for precise dimensioning of test pieces.
Samples are never exposed to unintended conditions thanks to automatically triggered conditioning steps, capable vacuum drying and impregnation cabinets.

ENPAY Insulation Laboratories are internationally accredited also for insulation fluids tests. The transformer oil used during tests is strictly under control via state of art test equipment complying with relevant standards and an advanced oil treatment system.

Test Equipments:

  • 200 kV/30kVA AC Test System (50 Hz)
  • ±350 kV DC Test System with polarity reversal
  • PD measurement system in screened high voltage laboratory with a background noise level lower than 2pC
  • C and tan δ Meter for Solid and Liquid Insulation Materials (50 Hz)
  • Polarization-Depolarization Current (PDC) measuring system
  • 5 kV DC Insulation Meter  

Tests including but not limited to the following can be performed in ENPAY Laboratories in compliance with related standards or proven methods via versatile equipment.

  • Breakdown Voltage /Electric Strength
  • Partial Discharge Inception/Extinction Voltage
  • Dissipation Factor (Tan δ)
  • Polarization-Depolarization Current (PDC)
  • Volume Resistivity/Volume Resistance