FieldengElectrical & Power
AC Power Factor
Power factor from measured real and apparent power, or from P, V, and I.
Electrical & PowerMechanical & Motion
Power factor from measured real and apparent power, or from P, V, and I.
App id: ELEC-10. Reference version 1.0.
How to fill it
Fill the inputs. The tool shows the outputs.
On the tool screen, Calc is the working sheet. Presets stores values you reuse. Reference is the formula, assumptions, and provenance below.
Formula
PF = P / SInputs
| Name | Unit |
|---|---|
| Real power | W |
| Apparent power (optional) | VA |
| RMS voltage (optional) | V |
| RMS current (optional) | A |
Outputs
| Name | Unit |
|---|---|
| Power factor (hero result) | 1 |
| Apparent power | VA |
| Reactive power | var |
Diagnose
Observations are context. They do not pass or fail a structure. See Diagnose.
Screening bands in the app: < 0.80 · 0.80–0.95 · ≥ 0.95.
| When | Observation | Severity |
|---|---|---|
power factor ≥ 0.95 | High power factor | info |
power factor ≥ 0.8 | Moderate power factor | caution |
power factor < 0.8 | Low power factor | warning |
Assumptions
- Enter apparent power, or RMS voltage and current to compute S = V × I.
Provenance
- PF = P / S. Same contextual bands as the AC power tools.