How to Select the Right APFC Panel for an Industry

Determine compensation

Record real power, existing displacement power factor, reactive demand and load changes. For sinusoidal conditions, Qc = P × [tan(arccos(PF1)) − tan(arccos(PF2))], with P in kW and Qc in kVAr. Harmonic-rich installations also require analysis of distortion power factor.

Choose steps and switching

Choose small enough steps to follow light-load demand without overcompensation. Contactor switching suits slower changes; thyristor switching may suit rapid variations when properly specified.

Assess harmonics and operating conditions

Survey drives, rectifiers, UPS loads and voltage/current harmonics before deciding on standard or detuned equipment. Confirm reactor-capacitor compatibility, temperature, ventilation, CT location and generator operation. Set the target to suit the utility and site study.

Frequently asked questions

What information should I provide for a project recommendation?

Share the equipment datasheets, load or string schedule, installation conditions and single-line diagram. Confirm the proposed configuration with the project electrical designer.

Are the examples a GEESYS product specification?

No. Worked examples explain selection principles. Use the selected product datasheet and approved project design for actual ratings and installation requirements.

Related GEESYS products

• Apfc