Illustrative steady-state fault-current limit of grid-following inverters, against 5-10x for synchronous machines. The inverter's controls decide how protection responds.
~1.2–1.5xestimate
| Value kind | estimate — Interpret this value according to its displayed kind, scope, source, and as-of date. |
|---|---|
| Scope | An illustrative range for grid-following inverters, not a universal inverter limit. The same presentation shows 2–3 p.u. for some grid-forming voltage-regulation schemes. Get the offered device's phase, sequence and time-dependent fault response. |
| As of | 2021-06 |
| Source | Sandia National Laboratories, M. J. Reno, Controls and Fault Response of Inverter-Based Resources, SAND2021-7782C · slide 4, Inverter Short-Circuit Models |
| Review | checking…review by 2026-10-25 · standard cadence |
| Recorded changes | last 2026-10-13 · 3 revisions tracked |
| Claim id | fault-current-from-inverter-based-sources-vs-5 |
Where the guide uses it
← Full numbers register — every date-stamped figure in the guide, with revision history.