APFC (Automatic Power Factor Correction) Panel
APFC panels automatically maintain the power factor of your electrical installation at unity (0.99+) by switching in or out capacitor banks as load varies. This eliminates power factor penalty charges from your electricity bill, reduces kVA demand, and improves the overall efficiency of your power distribution system. Our APFC panels use microprocessor-based controllers for fast, accurate PF correction.
Standard Features & Specifications
- Microprocessor-based APFC relay controller
- Automatic capacitor bank switching (4 to 14 steps)
- Thyristor or contactor switching options
- Digital power factor, voltage, current display
- Harmonic filter provision for VFD-loaded plants
- Overtemperature protection for capacitors
- Capacitor duty contactors with surge limiting resistors
- Under/over voltage protection
- Alarm outputs for fault conditions
Where It Is Used
- Industrial plants with large motor loads
- Pharmaceutical and chemical industries
- Commercial buildings with large HVAC systems
- Steel and cement manufacturing
- Textile mills and spinning mills
- Any plant incurring power factor penalty
Technical Data
| Parameter | Specification |
|---|---|
| Voltage Rating | 415V AC ±10%, 3 Phase |
| Capacitor Rating | 5 KVAR to 50 KVAR per step |
| Total KVAR | 50 KVAR to 2000 KVAR |
| Target PF | 0.95 to 0.99 (adjustable) |
| Controller | Selec / Circutor / Ducati APFC relay |
| Switching | Contactor / Thyristor (TSC) |
| Harmonic Filtering | Optional detuned reactors |
| Standards | IEC 60831, IS 13925 |
Product Images
Frequently Asked Questions
Savings depend on your current PF and tariff structure. Typically, industries save 5–20% on their electricity bill.
If your plant has VFDs or other harmonic sources, we recommend detuned reactors to prevent capacitor damage.
We perform a power analysis of your plant and size the APFC panel based on actual reactive power demand.