50kVAR to 1000kVAR from a single panel. Multiple panels in parallel for loads above 1000kVAR. Standard voltages: 380V, 400V, 480V, 690V. Custom voltages available. IP54 powder-coated enclosure standard. Detuning reactors optional for sites with THD above 10 percent. CE certified, IEC 61921 compliant. Lead time 4 to 6 weeks for standard configurations.
Most sites see full payback in 12 to 18 months. The math: take your monthly PF penalty and divide it into the panel cost. A factory paying $2,000 per month in PF penalties saves $24,000 per year. A panel costing $18,000 pays back in 9 months. After that, pure savings. Plus you free up transformer capacity and reduce cable losses — both are real money.
A power factor correction capacitor bank with automatic staged switching wins for any site where loads vary during the day — factories, commercial buildings, water treatment. A fixed capacitor bank for power factor correction costs less upfront but overcorrects at light load and undercorrects at full load. If your utility penalizes leading PF, a fixed bank causes more problems than it solves.
Six to twelve stages is standard for a power factor capacitor bank in industrial service. More stages mean finer correction — less hunting, less overcorrection, longer contactor life. Capacitor banks for power factor correction work best when the smallest stage is no larger than 25 percent of the total kVAR rating. That way the controller can hit any load point without overshooting.
A standalone capacitor bank supplies fixed reactive power. It corrects PF at one load point but overcorrects at light load. A pfc capacitor bank inside an APFC panel does the same job under automatic control — the controller reads real-time PF and engages only the stages it needs. Fixed correction is cheap upfront. Automatic correction saves more over time.
Understanding what is apfc panel is step one — it is not just a box of capacitors and contactors. A proper apfc panel manufacturer tests every stage individually, provides IEC 61921 compliance reports, and builds with low-loss polypropylene film capacitors rated for 180,000 hours. Visit the factory. Ask for serial-numbered build records. If they hesitate on either, keep looking.
An apfc panel monitors your power factor in real time and switches capacitor banks automatically to keep it above 0.95. The controller reads voltage and current, decides which capacitor stages to engage, and heavy-duty contactors do the switching. When you work with a reliable apfc panel supplier, you get the IEC 61921 test report, compliance certificate, and factory calibration records with every panel shipped.
