You might have a capacitor bank correction unit up and running; the power factor well maintained, but how are you going to ensure that this will continue as the years roll on? The primary cause of capacitor failure is heat.

A standard capacitor bank with a detuned reactor generates approximately 10 watts of heat per kVAR, creating significant thermal load within the enclosure. Without proper heat dissipation, performance issues will eventually occur.

Capacitor health can be monitored by measuring current draw. Record baseline readings when the system is fully functional and perform annual checks to track performance over time.
This helps in making informed decisions regarding maintenance or replacement. A clamp-on ammeter can be used at capacitor terminals or downstream contactors for measurement, whichever is more accessible.