OCP Mt. Diablo 1.0.0 §8.2.1: the two-wire differential 800 VDC PSU option keeps 800 VDC and return safety-isolated from protective earth; the ±400 V midpoint and other 800 VDC returns are grounded (§8.1.4.1, §8.1.4.2)
800 VDC two-wire PSU option (isolated from PE)observed
| 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 | Covers the §8.2.1 PSU design option only. §8.1.4.1 bonds the ±400 V midpoint to PE through high resistance or solidly; §8.1.4.2 lets a two-wire 800 VDC output float with high-resistance grounding on its return or bond the return solidly to PE. §8.1.4.2.3 requires a ground-fault detector for both midpoint schemes. |
| As of | 2026-10-08 |
| Source | OCP, Mt. Diablo Disaggregated Power Rack Specification 1.0.0 (Microsoft, Meta, Google), base specification effective October 8, 2026 · §8.2.1 AC/DC PSU (2-wire differential 800 VDC design option, safety isolated from PE); §8.1.4.1; §8.1.4.2. |
| Review | checking…review by 2027-10-08 · standard cadence |
| Recorded changes | last 2026-10-16 · 4 revisions tracked |
| Claim id | dc-bus-voltages-replacing-the-grounded-415-480 |
Where the guide uses it
← Full numbers register — every date-stamped figure in the guide, with revision history.