VFD Harmonic TDD Screen (IEEE 519)
Voltage and current THD limits for a non-linear load at its point of common coupling, per IEEE 519 table 1 / table 2.
- Current TDD limit
- %
- Voltage THD limit (≤ 1 kV)
- %
Formula, assumptions, and limits
| Symbol | Meaning | Unit |
|---|---|---|
| Short-circuit current at PCC | A | |
| Maximum demand load current | A | |
| Total demand distortion | % | |
| Voltage total harmonic distortion | % |
Source: IEEE 519 - Harmonic Control in Electrical Systems
In short
Voltage and current THD limits for a non-linear load at its point of common coupling, per IEEE 519 table 1 / table 2.