Eaton Logo

How to perform Reforming of DC-bus Electrolytic Capacitors in LV VFD

Often adjustable frequency drives are stored for extended periods of time without being powered, for example, distributor stock or customer spares. The re-forming
of the capacitors in these units should be done at least once a year. This can be done by applying the required voltage to the unit and keeping it applied for a minimum of 1 (one)
hour.

For more details please refer the attached document.

  1. DC_Bus_Capacitor_ReForming.pdf