Calculate three-phase delta connection values including line current, phase current, line voltage, real power, and apparent power.

Use RMS line-to-line voltage and RMS line current for a balanced delta-connected load.

Use a decimal: 0.8 means 80%. A zero power factor is allowed only when calculating power.

3 Phase Delta Formula

The following equation is used to calculate the power in a 3-phase delta system.

P = √(3) × V × I × PF
  • Where P is total real power (W), and PF is power factor from 0 to 1
  • V is the RMS line-to-line voltage (V)
  • I is the RMS line current (A)

Choose what to solve for and enter the shown known values. Apparent power is S = √3 × V × I in VA. In balanced delta, phase voltage equals line voltage and phase current equals line current divided by √3.

What is a 3 Phase Delta Calculator?

Definition:

A 3 Phase Delta Calculator is a tool that computes the missing electrical parameter in a 3-phase delta system by applying the standard formula relating power, voltage, and current.

How to Calculate 3 Phase Delta Values?

Example Problem:

The following example outlines the steps and information needed to calculate the missing electrical parameter using the 3 phase delta formula.

First, choose real and apparent power as the calculation.

Next, use 400 V line-to-line voltage, 10 A line current, and power factor 1 for this balanced example.

Finally, calculate the missing power using the formula above:

P = √3 × 400 × 10

P = √3 × 4000

P ≈ 6928.2032 W

FAQ

What does the 3 Phase Delta Calculator compute?

It calculates the missing electrical parameter (line voltage, line current, or power) in a 3-phase delta system based on the provided values and the formula.

Can this calculator be used for both delta and wye systems?

The balanced line-voltage/line-current power formulas also apply to wye. However, the phase-current relationship shown here is specific to delta; do not use it for wye phase values.

What precautions should I take when using the calculator?

Choose the desired result under Solve for and enter the known values shown. Inverse power calculations require positive power factor and a nonzero denominator. The model assumes balanced sinusoidal values.