A system includes a capacitor unit having one or more capacitors within a body of the capacitor unit, wherein the capacitor unit comprises at least two bushings. The system includes a monitoring system having a first antenna. The monitoring system is configured to couple to the at least two bushings to form a resonant frequency (LC) circuit having a capacitance based at least in part on an effective capacitance of the capacitor unit. The monitoring system is configured to send a first signal to a radio frequency (RF) reader at a frequency based at least in part on the effective capacitance of the capacitor unit via the first antenna. The first signal is associated with health of the capacitor unit.