Power Factor & Capacitor kVAR Calculator
Find the capacitor bank size (kVAR) required to correct your factory's power factor and eliminate PF penalty charges.
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How This Calculator Works
The required kVAR to improve power factor is calculated using the standard formula:
What is Power Factor?
Power factor is the ratio of active power (kW) to apparent power (kVA). A low PF means you're drawing more current than needed, increasing transformer loading and utility charges. Most DISCOMs in India charge penalties for PF below 0.90.
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Power Factor Correction โ Why It Matters
Most Indian state electricity boards charge industrial consumers for low power factor. A PF below 0.90 typically attracts a penalty of 1โ2% per 0.01 drop. Correcting PF to 0.95+ using capacitor banks eliminates this penalty and also reduces kVA demand charges.
Capacitor Bank Selection Guide
Always select the next standard kVAR rating above the calculated value. Common capacitor bank sizes available in India: 5, 10, 15, 20, 25, 30, 50, 75, 100 kVAR. For loads above 50 kVAR, consider an Automatic Power Factor Controller (APFC) panel which switches capacitors automatically as load varies.
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