OCP's DCF Power Distribution LVDC white paper v1.1.0 (2026-09-02) proposes U5 = 840 VDC as the interoperability anchor and highest designed protection voltage for 800 VDC distribution, with sources constrained not to exceed it and the band below 760 VDC (800 VDC −5%) optional.
840 VDCobserved
| Value kind | observed — Reported measurements, counts, and specifications keep the precision and scope stated by their source; an exact specification is not treated as a range. |
|---|---|
| Scope | A proposal in a white paper, not a published standard or a product rating. The paper also treats ±750 VDC or 1,500 VDC as the next LVDC step; 1,500 VDC is the low-voltage DC limit. |
| As of | 2026-09 |
| Source | Open Compute Project, Data Center Facility – Low Voltage Direct Current Power Distribution white paper, version 1.1.0, 2 September 2026 (Power Distribution sub-project) · §5.7 Interoperable Voltage Band Proposal (PDF pp. 69–70); §5.6.1 / Figure 5.14 (U5 protection value) |
| Review | checking…review by 2027-03-17 · standard cadence |
| Recorded changes | last 2026-10-17 |
| Claim id | ocp-lvdc-white-paper-u5-840-vdc |
Where the guide uses it
← Full numbers register — every date-stamped figure in the guide, with revision history.