Power Factor Calculator Dashboard

📐 POWER FACTOR CALC Dashboard 9 Calculators

Overview

📐

Calculators

9

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Phase Support

1Φ & 3Φ

🔋

Cap. Types

Fixed/Auto

📊

Standards

IEC/IEEE

Calculators

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Power Factor from P, Q, S

Calculate PF & phase angle φ

PF = cosφ = P/S | S = √(P²+Q²) | φ = arctan(Q/P)

Known Quantity P (kW) & Q (kVAR) P (kW) & S (kVA) Q (kVAR) & S (kVA) V (Volts), I (A) & P (kW)

Phase 3-Phase1-Phase

P – Active Power (kW)

Q – Reactive Power (kVAR)

Voltage (V)

Current (A)

Power Factor Meter

0.00.50.70.850.951.0

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Power Factor

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Phase Angle φ

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P (kW)

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Q (kVAR)

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S (kVA)

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PF Type

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Capacitor Bank Sizing

kVAR & capacitance required

Qc = P×(tanφ₁−tanφ₂) | C = Qc×10⁶ / (2πf×V²) [μF] per phase

Real Power (kW)

System Voltage (V)

Existing PF

Target PF

Frequency (Hz) 50 Hz60 Hz

Connection 3-Phase Delta3-Phase Star1-Phase

Qc Required (kVAR)

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Cap per Phase (μF)

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Current Saved (A)

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kVA Reduction

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Before: S (kVA)

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After: S (kVA)

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Loss Reduction

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PF from Meter Readings

Wattmeter / energy meter data

PF = kWh / kVAh | PF = W / (V × I) [1Φ] | PF = W / (√3×VL×IL) [3Φ]

Active Energy (kWh)

Apparent Energy (kVAh)

OR: Voltage (V)

Current (A)

Active Power (kW)

Phase 3-Phase1-Phase

PF (from Energy)

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PF (from V, I, P)

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Phase Angle φ

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Load Type

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💰

PF Penalty & Incentive

Utility bill surcharge / rebate calculation

Penalty if PF < threshold | Incentive if PF > threshold | % adjustment on bill

Monthly Bill (৳)

Actual PF

Reference PF

Penalty Rate (%/0.01 PF)

Incentive Rate (%/0.01 PF)

Incentive Threshold PF

PF Steps from Ref

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Penalty / Rebate %

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Amount (৳)

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Adjusted Bill (৳)

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Auto PFCR Step Calculator

Capacitor bank step sizing for APFC panel

Steps = Qc_total / Step_size | Min steps ≥ 4 for APFC relay accuracy

Total kVAR Required

Number of Steps

System Voltage (V)

Frequency (Hz) 50 Hz60 Hz

Step Configuration Equal Steps (e.g. 25+25+25…) 1:1:2 Ratio 1:2:4:8 Binary Custom First Step (kVAR)

Step Size (kVAR)

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Cap per Step (μF)

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Total Steps

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Reactive Power & kVAR

Q from measurements or PF

Q = √(S²−P²) | Q = P×tanφ | Q = S×sinφ | tanφ = Q/P

Active Power P (kW)

Power Factor

Voltage (V)

Phase 3-Phase1-Phase

Q (kVAR)

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S (kVA)

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tan φ

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Current (A)

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Power Triangle

〰️

True PF vs Displacement PF

Harmonics distortion effect on PF

True PF = DPF × PF_dist | PF_dist = 1/√(1+THD²) | THD% = √(ΣIh²)/I1 × 100

Displacement PF (cosφ)

Total Harmonic Distortion THD (%)

3rd Harmonic I3 (%)

5th Harmonic I5 (%)

7th Harmonic I7 (%)

11th Harmonic I11 (%)

Displacement PF

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THD%

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Distortion Factor

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True PF

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Energy Saving from PF Improvement

I²R loss reduction & bill saving

ΔI²R = I₁²R − I₂²R | ΔI% = (1 − PF₁/PF₂) × 100

Load (kW)

System Voltage (V)

Before PF

After PF

Cable R (Ω)

Energy Rate (৳/kWh)

Before Current

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After Current

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Current Reduction

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I²R Loss Reduction

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Daily Saving (kWh)

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Monthly Saving (৳)

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Annual Saving (৳)

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🏭

PF All-in-One Summary

Complete PF analysis: measurement → correction → savings → payback period

Full analysis: PF → Capacitor sizing → Bill saving → Payback period → Recommendation

Load (kW)

Voltage (V)

Existing PF

Target PF

Monthly Bill (৳)

Penalty Rate (%/step)

Cap Bank Cost (৳/kVAR)

Frequency (Hz) 50 Hz60 Hz

Current Before (A)

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Current After (A)

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Qc Required (kVAR)

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Cap Bank Cost (৳)

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PF Penalty (৳)

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kVA Reduction

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Monthly Saving (৳)

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Payback Period

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Annual Saving (৳)

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5-Year Saving (৳)

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Recommendation

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