TABLE 3. Operational Frequency Thresholds for NERC, ERCOT, and NYISO.
| Category | NERC | ERCOT | NYISO |
|---|---|---|---|
| Overfrequency (Hz) | 62.20 | 61.80 | 60.10 |
| Underfrequency (Hz) | 59.50 | 59.30 | 59.90 |
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