Medium Voltage Capacitors - Metallised Polypropylene With Self-healing Dielectric | Long-term Stable Capacitance, No Phase Asymmetries, Compact Cylindrical Windings

We are engaged in distributing and supplying excellent quality Medium Voltage Capacitors to our valuable clients.
No liquids
Self-healing dielectric and long-term stable capacitance
No phase asymmetries

The traditional ALLFILM system of conventional medium and high voltage capacitors consists of aluminium foil and polypropylene, immersed completely in synthetic, flammable oil. Breakdowns in this kind of dielectric tend to result in permanent short circuits which take out the entire capacitor element, change the voltage conditions inside the capacitor and initiate a chain reaction of further failures of capacitor elements which will end up in the loss of the entire capacitor. In three-phase capacitors, this process is usually accompanied by the occurrence of phase asymmetries which may cause damage and catastrophic failure.

In our MSD medium voltage capacitors, we are using the metallised polypropylene so well known from LV power factor correction. Instead of flat pack windings, our capacitance is formed by compact cylindrical windings, avoiding the mechanical stress at the edges of the ALLFILM flat packs. Dielectric breakdowns insulate and regenerate by themselves, domino-like failures of series-connected capacitor elements are impossible. The capacitance remains practically unchanged throughout the operating life which is of particular interest for applications with tuning or detuning reactors.