Power Factor Correction (PFC)
Detuned and active PFC banks for harmonic-rich loads.
Poor power factor inflates demand tariffs and stresses upstream transformers. We size detuned PFC banks against measured harmonic profiles — never rule-of-thumb — and deliver active filters where THD exceeds AS 61000 limits.
Measure before you size
Sizing PFC by rule-of-thumb is how capacitor failures happen. We meter the actual harmonic profile of the site for at least a week, then specify detuning, kVAr step sizes and switching strategy from that data. The result: PFC that lasts, not PFC that explodes in year 3.
Built to spec, every line.
- 01Detuned 189 Hz / 134 Hz reactor designs
- 02Active filtering to IEEE 519 limits
- 03Auto-correction to 0.99 lagging
- 04Thermal-imaged commissioning report
- 05Tariff payback modelling included
- 06Capacitors rated for full life at 50°C ambient
- Configuration
- Detuned / active
- Detuning
- 7% (189 Hz) or 14% (134 Hz)
- Target PF
- 0.99 lagging
- kVAr range
- 25 → 1,200 kVAr
- Controller
- 12-stage with harmonic alarm
Power Factor Correction (PFC) — questions answered
Straight answers from our engineering team. Ask us directly →
Detuned handles harmonics up to ~5% THDi. Active filtering is the answer above that, or where DNSP limits require <5% at the PCC. We make the call from measured data.
Build it right the first time.
Send us your scope, single-line, or RFQ. A senior engineer responds within one business day.