Conversion basis

Convert

Electrical system

Power basis

Use electrical input for metered kW. Use load output only when converting a stated mechanical or useful output and include efficiency.

Known values

Line-to-line voltage

Active power

Line current, each line

Power factor

Load efficiency

Worked example

Line current, each line

Balanced three-phase, line-to-line voltage. The power is measured electrical input, so no efficiency is applied.

Underlined figures are rounded. Select one to copy its full value.

Method and assumptions

Formula

DC / 1φ: P = V × I × PF; balanced 3φ: P = √3 × VLL × IL × PF; useful output = electrical input × η

Power factor applies only to AC. Efficiency applies only when the stated power is useful load output rather than measured electrical input.

The three-phase shortcut assumes a balanced system and line-to-line voltage.
For distorted or unbalanced loads, use simultaneous per-phase power measurements rather than this conversion.
This is not conductor, protection, motor or transformer sizing approval.

Read the related engineering guidance, or carry this task into System Builder to identify the signal path and EpiSensor products.