Voltage and current THD limits for a non-linear load at its point of common coupling, per IEEE 519 table 1 / table 2.
Formula
$$ \text{TDD}\text{limit} = f(I{sc}/I_L) $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $I_{sc}$ | Short-circuit current at PCC | A | SC study |
| $I_L$ | Maximum demand load current | A | system design |
| $TDD$ | Total demand distortion | % | IEEE 519 |
| $THD$ | Voltage total harmonic distortion | % | IEEE 519 |
Sources
- IEEE 519 - Harmonic Control in Electrical Systems.