Three Phase Power Calculator

Calculate kW, kVA, kVAR, PF & Current for 3-Phase Systems

🔌 Line Voltage (V)

⚡ Line Current (A)

📈 Power Factor (PF)

🔗 Connection

💡 Star: V_L = √3 × V_phase | Delta: V_L = V_phase

P = √3 × V × I × PF | S = √3 × V × I

📖 Three Phase Power Calculator

Three-phase power systems power industrial and commercial facilities. This tool computes real power (kW), apparent power (kVA), reactive power (kVAR), power factor (PF), and phase current.

📐 Formulas

P = √3 × V × I × PF | S = √3 × V × I | Q = √3 × V × I × sin(θ)

🔗 Star vs Delta

Parameter	Star (Wye)	Delta
Line Voltage	V_L = √3 × V_phase	V_L = V_phase
Line Current	I_L = I_phase	I_L = √3 × I_phase
Phase Current	I_L	I_L / √3

📊 Common Loads

Equipment	V (V)	I (A)	PF	kW
Large Motor	415	200	0.80	115
Compressor	415	100	0.85	61
3-Phase Heater	415	50	1.0	36
HVAC Unit	415	150	0.85	92

❓ Frequently Asked Questions

Three phase power formula? ▼

P = √3 × V × I × PF. For resistive loads (PF=1), P = √3 × V × I.

Star vs Delta difference? ▼

Star: V_L = √3×V_phase, I_L = I_phase. Delta: V_L = V_phase, I_L = √3×I_phase.

How to calculate 3-phase current? ▼

I = P / (√3 × V × PF), where P is power in watts.

Typical motor PF? ▼

Induction motors: 0.75-0.90. At full load: 0.80-0.85.

Standard 3-phase voltage in India? ▼

415V (line-to-line) at 50Hz. Industrial: 440V, 11kV+.