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The on-load tap-changer VACUTAP® VT® with vacuum interrupters serves for setting the ratio of dry-type transformers under load.

Your benefits at
a glance

  • Electrical lifetime of 500,000 tap-change operations<
  • Mechanical lifetime of 800,000 tap-change operations
  • Simple to install
  • Up to 5 year guarantee


Technical Data

Max. rated through-current single-phase / three-phase: 500 A
Max. rated step voltage 900 V
Max. rated switching capacity single-phase / three-phase: 250 kVA
Max. voltage for operational equipment Um 40.5 kV
Application: At any selectable winding position.
Operating positions (linear): 9 max.