GAEP Type PKR Megavolt Peaking Capacitors are typically used under oil for pulse shaping or peaking in large pulse power systems. Some of these machines simulate the EMP (Electromagnetic Pulse) or X-ray radiation or magnetohydrodynamic effects of nuclear explosions. The capacitors are manufactured using a large number of mixed-dielectric, foil-electrode windings connected in series, arranged so as to grade the voltage linearly along the axis of the capacitor. Special attention is made to the materials used and their arrangement so as 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.

The same unique technology has been used by GAEP 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 0.01 to 0.1 J/cc, as shown below.