CE certified, IEC 60831 type-tested at an accredited laboratory. Every stage has its own HRC fuse link — one capacitor fault isolates only that stage. The rest of the bank keeps running. Mechanical door interlock prevents access to live busbar. Built-in discharge resistors meet IEC 60831 safety requirements. We configure regional compliance — SASO, SNI, GOST — for your destination market.
Standard range is 380V to 690V, 50kVAR to 1000kVAR. Step sizes are typically 25kVAR or 50kVAR. We build custom ratings for 220V systems and special high-ambient-temperature sites. Every capacitor stage uses polypropylene film dielectric with built-in discharge resistor — drains to below 50V in under 60 seconds after disconnection.
What is APFC panel sizing? It is the process of matching total kVAR and step sizes to your load profile — too few steps and you under-correct at low load, too many and the contactors cycle unnecessarily. A good apfc panel manufacturer builds each stage with its own fuse and contactor, uses polypropylene film capacitors with discharge resistors, and type-tests the complete bank to IEC 60831. Zhegui has been doing exactly this since 2013.
An APFC panel is an automatic capacitor bank — the controller reads voltage and current 50 times per second and switches capacitor stages as the load changes, preventing both under-correction and over-correction. A good apfc panel supplier provides IEC 60831 test reports for every stage, uses HRC fuse links per stage, and offers controller programming support. If the supplier hesitates on test reports, find another one.
Start with your 12-month utility bills. Average PF and peak kVA demand determine the kVAR correction you need. A 500kVA plant at 0.75 PF needs roughly 200kVAR to reach 0.95. Our capacitor bank for power factor correction spans 50kVAR to 1000kVAR in 25kVAR or 50kVAR steps. Send us your bills and single-line diagram for a free sizing calculation with payback estimate.
Your utility charges a penalty when power factor drops below 0.90 or 0.95 depending on your contract. A power factor capacitor bank corrects the lag, moving your PF back above the penalty threshold. We have seen facilities save 10 to 25 percent on monthly bills. Capacitor banks for power factor correction are the most cost-effective way to fix this — cheaper than SVG panels or synchronous condensers for most sites.
An LV capacitor bank is a set of polypropylene film capacitors installed at your main distribution board to inject leading reactive current. When motors, transformers, and inductive loads draw lagging current, a pfc capacitor bank cancels that lag and brings your power factor closer to 1.00. The utility meter stops charging you for reactive power, and your bill drops immediately.
