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Power Factor Calculator
Calculate power factor, real power, apparent power, and reactive power for AC electrical problems.
Professional workflow
Connect real, apparent, and reactive power values in AC circuits.
PF = kW / kVA
功率因数计算器
计算功率因数并推荐校正方案
公式:
PF = P / S = cos(φ)
Q = √(S² - P²)
P为有功功率(kW)，S为视在功率(kVA)，Q为无功功率(kVAR)
💡 理想PF=1.0，工业建议≥0.95
💡 低PF会增加电费和线路损耗
Frequently asked questions
What is power factor?
Power factor is the ratio of real power to apparent power in an AC circuit.
Why does low power factor matter?
Low power factor means more current is needed for the same real power, increasing losses and equipment loading.
Can this calculate kVAR?
It helps relate real, apparent, and reactive power when enough values are known.
Is correction automatic?
No. Correction equipment should be designed and verified by qualified professionals.