Illustrative 150 MW facility transformer sizing: three units, one unavailable, 0.95 power factor, 0.95 site factor and 10% planning margin
About 91 MVA per unit; select above the exact boundderived
| Value kind | derived — Derived values are guide calculations; their result is only as fixed as the stated inputs, scope, and method. |
|---|---|
| Scope | Illustrative facility input load, not IT load. A 100 MVA candidate passes this capacity screen; 80 MVA fails under the stated derating. |
| As of | 2026-09 |
| Source | Guide derivation — illustrative capacity screen dated September 8, 2026; Chapter 4.4, not a typical OEM rating. · Chapter 4.4: 150 MW × 1.10 / (0.95 PF × 0.95 site factor × 2 surviving units). |
| Derivation | 150×1.10/(0.95×0.95×2)=91.412742... MVA; about 91 MVA is display only, not a qualifying nameplate. Three 100 MVA candidates pass, 80 MVA fails. Raw-load crossover 2×100×0.95×0.95/1.10=164.090909... MW; display about 160 MW, use full inequality. At assumed 170 MW the candidate fails. |
| Review | checking…review by 2027-03-05 · standard cadence |
| Recorded changes | last 2026-09-16 · 3 revisions tracked |
| Claim id | typical-hv-mv-transformer-unit-n-1-to-serve-150 |
Where the guide uses it
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