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SF6 Instrument transformers for GIS

Voltage Transformers for Gas-insulated Substations

Main Characteristics

  • Up 72 to 550 kV
  • Thermal capacity up to 4000 VA
  • Burdens up to 200 VA class 0.2 %
  • Protection against ferroresonance and high-frequency overvoltage conditions
  • HV primary winding using long anti-resonant layers technology with synthetic film as insulation between layers
  • Compact design
  • Manufacturing in 'dust-free' room
  • Single-phase or three-phase VT
  • Insulation of coils: SF6 under 4 to 5 bars absolute pressure
  • Aluminum tank