Power Voltage Transformers – Type VPT

One of the latest developments, started in 2006, the Power Voltage Transformer type VPT is based on the Inductive Voltage Transformer type VPU which brings more than 45 years of both design and sevice experience. The VPT inherits the same open-core concept and all its benefits. 


Conceptually a hybrid between a power transformer and an instrument transformer, the role of this type of unit is to convert  energy directly from high to low voltage for supply of substations or remote consumers.


Power 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
  • Rated output: from 5 kVA up to 167,5 kVA
  • Direct connection to high voltage system and power transformation to low voltage
  • 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
  • Compact size and light-weight design – easy transport and installation
  • Maintenance free  
  • Off-load tapping on secondary winding (optional)
  • Internal overpressure indicator for online monitoring

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