APFC Panel Design — Automatic Power Factor Correction
Automatic Power Factor Correction (APFC) panels improve power factor to avoid utility penalties and reduce losses. PPT designs and manufactures APFC panels from 150 to 600 kVAr with 6/8/12 stage switching and detuned reactor options.
Key features
- Automatic kVAr calculation
- 6/8/12 stage APFC relay
- Detuned reactor selection for harmonic environments
- Capacitor contactor and fuse protection
- Integration with PCC panel design
- Standard banks: 150 to 600 kVAr
Specifications
| kVAr Range | 150 – 600 kVAr |
|---|---|
| Stages | 6 / 8 / 12 stage |
| Detuned Reactor | 7% / 14% options |
| Voltage System | 415V, 3-Phase, 50Hz |
| Standard | IS 13340 / IEC 61921 |
| Target PF | 0.99 lagging |
Applications
- All industrial installations
- Commercial buildings
- IT parks
- Shopping malls
Frequently asked questions
How is kVAr requirement calculated?
kVAr = kW × (tan φ₁ - tan φ₂), where φ₁ and φ₂ are the angles corresponding to existing and target power factor.
When are detuned reactors needed?
Detuned reactors (7% or 14%) are required in installations with harmonic-generating loads like VFDs, UPS, and rectifiers to prevent resonance.
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