Very High Voltage Capacitors

  • Capacitance values ranging from microfarads at 100 kV to nanofarads at 1 MV
  • Rated from 100 thousand volts to megavolts

Our very high voltage capacitors are typically used under oil for pulse shaping or peaking in large pulse power systems. The capacitors are manufactured using a large number of mixed-dialectric, foil electrode windings connected in series, arranged to grade the voltage linearly along the axis of the capacitor.  Special attention is made to the materials used and their arrangement to avoid internal flashover. The capacitors are housed in plastic cases with axial terminals, and are thoroughly vacuum-dried and impregnated with an insulating liquid.

We use the same unique technology to manufacture corona-free high voltage capacitors rated in the 10's to 100's of kilovolts AC, as well as for long life DC filter and pulse discharge capacitors operating in the 100's of kilovolts.  Energy density depends on required lifetime, but is typically in the range of 0.01 to 0.1 J/cc.

If you would like more information, or would like to discuss your particular requirements, please contact us.