Power Factor
Calculator
kW, kVA, kVAR aur PF angle — 4 modes mein calculate karo. Improvement capacitor sizing bhi instant.
Jo values pata hain wo daalo — baaki sab calculate ho jayega.
Power Factor — Kya Hota Hai?
Bhai, Gulf ki kisi bhi industrial site pe — Qatar University ho ya Sidra Hospital — KAHRAMAA/DEWA ka inspector pehla sawaal yahi karta hai: “Tumhara power factor kya hai?” Agar 0.85 se neeche gaya to penalty. Simple.
Power factor ek ratio hai — actual kaam karne wali power (kW) aur total power consumed (kVA) ke beech. Jaise ek lazy worker jo boss ke saamne busy dikhta hai but kaam kam karta hai — high kVA, low kW, low PF.
Power Triangle
Teen powers hain jo ek right triangle banate hain:
PF = kW ÷ kVA = cos(θ)
kVAR = kW × tan(θ)
Angle θ = cos&supmin;¹(PF)
Gulf Sites pe PF kyun important hai?
KAHRAMAA Qatar mein 0.90 lagging se neeche penalty charge hoti hai. UAE mein DEWA bhi 0.85 minimum rakhta hai. Sidra Hospital jaise bade projects mein PF monitoring continuous hoti hai. DB PPM guide mein power quality checks mention hain.
PF Improve Kaise Karein
Capacitor bank lagao — yeh lagging reactive power ko cancel karta hai. Formula:
Where θ1 = existing PF angle, θ2 = target PF angle
Given: 100 kW load, existing PF = 0.75, target = 0.95
kVA_existing = 100 ÷ 0.75 = 133.3 kVA
kVAR_existing = √(133.3² — 100²) = 88.2 kVAR
kVAR_target = 100 × tan(cos&supmin;¹0.95) = 32.9 kVAR
Capacitor needed = 88.2 — 32.9 = 55.3 kVAR
PF Chart — Good/Bad/Penalty
| PF Range | Status | Gulf Action |
|---|---|---|
| 0.95 — 1.0 | Excellent | No penalty, rebate possible |
| 0.90 — 0.94 | Good | Acceptable (KAHRAMAA limit) |
| 0.85 — 0.89 | Average | Warning zone (DEWA limit) |
| Below 0.85 | Poor | Penalty charge laga denge |