Inductive Voltage Transformers – Type VPU

Končar has been manufacturing voltage transformers type VPU since 1965, and has acquired over 45 years of service experience with over 15.000 units installed worldwide. The open core concept, with its significant advantages, is incorporated in these units and distinguishes them from solutions available on the market today.


The voltage transformers are designed with exceptional longevity and reliability, aiming for at least 50 years of service life.


Performance & Key Features

  • Um: from 72,5 kV up to 550 kV
  • Up to 6 secondary windings
  • Partial discharge free on power-frequency withstand voltage
  • Unique ferroresonance immune design (open type magnetic core)
  • Explosion safety - Internal arc resistant
  • Stainless steel bellows oil expansion system
  • Extreme temperature range available (-60 to +60 °C)
  • Extensive experience in seismically active regions
  • Minimum oil design
  • Maintenance free