This Three phase power calculator determine the total electrical power (kW) in 3 phase power. Enter the voltage current and select the connection type to get the total power.
Three Phase Power Calculator
How to Calculate 3 Phase Power
The given tool helps you to find out the three phase power within seconds. You need to enter the values of voltage and amperes in the field. Then select the connection type. After that, click on the calculate button to get the value.
What is Three Phase power?
Three separate lines of conductors are used to carry the alternating current. This is called a three-phase; sometimes an additional fourth conductor is used for the neutral. Each of the AC signals is offset by 120 degrees. This degree of offset is essential for power generation, constant power transfer, and creating a rotating magnetic field.
3 Phase Power vs Single Phase
| Feature | Single Phase Power | Three Phase Power |
|---|---|---|
| Definition | It has one alternating voltage waveform, means single power line. | Uses three alternating waveforms (120° offset) |
| Voltage Supply | In India it will be 230V. In usa residential voltage is 120 | 400V (line-to-line), 230V (line-to-neutral) |
| Number of Wires | it has 2 wires (Phase + Neutral) | it has 3 or 4 wires (3 Phases + Neutral) |
| Power Delivery | Pulsating (not constant) | Continuous and smooth |
| Efficiency | Less efficient | More efficient |
| Power Capacity | Suitable for low loads and appliances | Suitable for high loads, industrial. |
| Common Usage | Homes, small shops | Industries, factories, large buildings |
| Motor Performance | Lower efficiency, needs starter | Self-starting, more efficient |
| Cost of Installation | Lower | Higher |
| Transmission Loss | Higher | Lower |
| Reliability | Less reliable | More reliable |
| Examples | Fans, lights, TVs | Motors, heavy machinery, elevators |
Formula Used in 3 Phase Power Calculation
Line Voltage Formula
P= 1.732×V×I×PF
Phase voltage formula
P=3×V×I×PF
Power Factor in 3 Phase System
Power factor is the ratio of real power vs apparent power. PF = Real power/ Apparent power. ). A high power factor which means the value close to 1.0 will minimizes the reactive power and also reducing the line currents, lowering electricity costs and reducing the strain on the generators and infrastructure so this factor is crucial for large industrials inductive loads.
3 Phase Power Calculation Example
- Line Voltage (V) = 400V
- Line Current (I) = 10A
- Power Factor PF = 0.8
Applyig the formula power will be P=1.732×400×10×0.8
P = 5542.4 watts which means 5.542Kw
