Harmonic Distortion Limits: 50-100
IEEE 519-2022 harmonic distortion limits at the Point of Common Coupling (PCC). Current distortion limits by ISC/IL ratio and individual harmonic group; voltage distortion limits by bus voltage level. Covers systems from <=1kV through >161kV.
| isc il ratio | voltage class kv | h 11 to 16 pct (%) | h 17 to 22 pct (%) | h 23 to 34 pct (%) | h 2 to 10 pct (%) | h 35 to 50 pct (%) | notes | tdd pct (%) | voltage individual pct (%) | voltage thd pct (%) |
|---|---|---|---|---|---|---|---|---|---|---|
| 50-100 | EHV_GT161KV | 4.5 | 4 | 1.5 | 10 | 0.7 | V > 161kV; transmission | 12 | 1 | 1.5 |
| 50-100 | HV_69_161KV | 4.5 | 4 | 1.5 | 10 | 0.7 | 69kV < V ≤ 161kV | 12 | 1.5 | 2.5 |
| 50-100 | LV_1KV | 4.5 | 4 | 1.5 | 10 | 0.7 | Systems ≤1.0kV; strong source | 12 | 5 | 8 |
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