Worked example
No result for these values. The message above the form says which field to change.
Apparent power
125 kVA
- Active power
- 100 kW
- Reactive power (inductive, lagging)
- 75 kvar
- Power factor
- 0.8
- Phase angle
Sinusoidal or fundamental-frequency triangle. Where the entered power factor includes waveform distortion, the angle is not the displacement angle.
Underlined figures are rounded. Select one to copy its full value.
Method and assumptions
Formula
S² = P² + Q²; PF = P ÷ S; |φ| = cos⁻¹(PF)The Pythagorean triangle applies to sinusoidal or fundamental-frequency quantities. On distorted waveforms, total non-active power is not necessarily displacement kvar.
Limits of this result
- Inputs and results are magnitudes; the selected leading/lagging direction supplies the sign of reactive power.
- Do not infer displacement angle or compensation requirements from total PF where harmonics are material.
- Capacitor sizing, switching and resonance checks require a separate engineering study.
Technical sources
Put the value to work
Read the related engineering guidance, or carry this task into System Builder to identify the signal path and EpiSensor products.