Calculate Single Phase Load on 3 Phase Power

Single Phase Power Formula:

\[ P_{kW} = \frac{V \times I \times PF}{1000} \]

Single Phase Power (P_kW): kW

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1. What is Single Phase Load on 3 Phase Power?

Definition: This calculator determines the power load on one phase of a 3-phase system using voltage, current, and power factor.

Purpose: It helps electrical engineers and technicians analyze individual phase loading in 3-phase power systems.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ P_{kW} = \frac{V \times I \times PF}{1000} \]

Where:

\( P_{kW} \) — Power in kilowatts (kW)
\( V \) — Voltage (volts)
\( I \) — Current (amps)
\( PF \) — Power factor (unitless, between 0 and 1)

Explanation: The formula calculates real power (kW) by multiplying voltage, current, and power factor, then dividing by 1000 to convert watts to kilowatts.

3. Importance of Single Phase Load Calculation

Details: Understanding individual phase loading helps balance 3-phase systems, prevent overloads, and ensure efficient power distribution.

4. Using the Calculator

Tips: Enter the phase voltage, current, and power factor (default 0.8). Power factor must be between 0 and 1. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is power factor?
A: Power factor is the ratio of real power to apparent power, representing how effectively current is being converted into useful work.

Q2: Why divide by 1000?
A: The division converts the result from watts to kilowatts (1 kW = 1000 W).

Q3: What's a typical power factor value?
A: For most industrial loads, power factor ranges from 0.8 to 0.95. Resistive loads have PF=1, while inductive loads have lower PF.

Q4: Is this the same as line-to-line calculation?
A: No, this calculates phase power. For line-to-line power in a balanced 3-phase system, multiply by √3.

Q5: How does this relate to 3-phase total power?
A: In a balanced system, total 3-phase power would be 3 times this single-phase value.