Live evidence case / CML-PDRE-001

800V DC Data Center Power Architecture

Question: Has 800V DC power architecture moved from proposal to independently attributable field deployment?

Current answer: One attributable operator record supports one commercial SST-to-800VDC deployment. It does not establish independent validation, replication, industry adoption, or full PDRE validation.

Current state: HUMAN-REVIEWED SINGLE-INSTANCE EVIDENCE
As of: 2026-09-20T10:46:47Z
Last material change: 2026-09-20

Current state Citable stop point Machine-readable record

Search context

Questions this record addresses

These are genuine discovery questions. Answers remain bounded by the same public state shown on this page.

Is 800V DC being deployed in data centers?
Has 800VDC reached real field deployment?
Is 800VDC still only a proposed architecture?
What public evidence exists for 800VDC deployment?

State · Evidence · Counter-evidence · Unknowns · Case history · Public change history · Search provenance · Related case

Citable stop point · derived public projection · v0.1

800V DC / SST field deployment

HUMAN-REVIEWED SINGLE-INSTANCE EVIDENCE

Claim

A named operator reported commercial operation of one SST-based 10kV AC to 800VDC system at Sangyuan Cloud Computing Campus.

Scope

One named operator and one named campus near Beijing; this SST-based power architecture only.

Time boundary

Source event 2026-07-02; knowledge time 2026-09-20T10:46:47Z; human review frozen 2026-09-20T11:12:14Z.

Current bounded state

HUMAN-REVIEWED SINGLE-INSTANCE EVIDENCE

Supports

Attributable evidence of commercial operation for this one deployment; the source is the operator's own publication.

Does not support

Independent performance validation, long operating history, multi-entity replication, repeat procurement, industry adoption, or full PDRE validation. Canonical migration readiness was not changed by this review.

Next minimum verification

Obtain an independently attributable operating record for the named site with its observation period and conditions.

A citation is incomplete if “Does not support” is omitted. Derived from the human-reviewed L1 evidence and publication control. No new source was evaluated for this projection.

Open permanent v0.1 citation Approved public evidence record

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Current evidence state

What the approved records establish now.

States separate architecture, validation, field operation, and adoption. No confidence percentage is inferred.

Architecture possibilitySUPPORTED

System validationSUPPORTED

Source-reported demonstrations; performance claims remain attributed.

Named field deploymentOBSERVED — SINGLE INSTANCE

Long operating historyUNKNOWN

Multi-entity replicationUNKNOWN

Independent third-party validationUNKNOWN

Repeat procurementUNKNOWN

Industry-scale adoptionNOT ESTABLISHED

PDRE full validationNO

Decision transition

What changed our assessment?

Authorization is separate from execution. Evidence acceptance is separate from canonical readiness.

BeforeR5_FIELD_DEPLOYED_NOT_ESTABLISHED

Research gap identifiedDated, attributable field-operation evidence needed

Human authorization1 narrow L1 verification authorized

No general 800V research authorized.

Bounded verification4 queries · 9 sources · 1 deep review

Qualifying evidenceNamed operator · named campus · 10kV AC → SST → 800VDC · commercial operation

Human reviewEvidence accepted

AfterR5_ARCHITECTURE_FIELD_DEPLOYMENT_EVIDENCE_ACCEPTED_SINGLE_INSTANCE

Canonical readiness remains unchanged pending existing governance.

Still unknown5 unresolved dimensions preserved

Source and search provenance

Approved qualifying evidence record.

The source is an attributable operator publication, not an independent third-party audit. The bounded verification used 4 queries, reviewed 9 sources, and performed 1 deep review; no general 800V research was authorized.

L1-EV-CML-PDRE-001-FIELD-DEPLOYMENT-001

Chindata Commences Commercial Operation of an SST-Based DC Power System for Hyperscale Data Centers

Open atomic evidence record →

HUMAN REVIEW ACCEPTED · SINGLE INSTANCE

SOURCE / PUBLISHER: Primary operator publication / Chindata
PUBLICATION DATE: 2026-07-02
EVENT DATE: 2026-07-02
KNOWLEDGE DATE: 2026-09-20T10:46:47Z
OPERATIONAL ENVIRONMENT: Chindata Sangyuan Cloud Computing Campus near Beijing
ARCHITECTURE: 10kV utility AC to 800VDC using an SST-based intelligent DC power system
WHAT IT SUPPORTS: One named operator reported commercial operation at one named campus for a materially relevant SST-to-800VDC architecture.
WHAT IT DOES NOT SUPPORT: Independent performance validation, operating history, multi-entity replication, application qualification, repeat procurement, industry adoption, or full PDRE validation.

Counter-evidence

Non-qualifying records remain visible.

Future commercialization or planned deployment bounds the assessment; it is not silently discarded after one qualifying source is found.

PLANNED DEPLOYMENT

Vertiv / practical path to 800 VDC

Commercialization, customer pilots, and deployment ramp were described as future activity. Rejected as field-operation evidence for this question.

UNDER DEVELOPMENT

Siemens + Reinhausen / DC power solutions

The record described technology under development for future deployment. Rejected as field-operation evidence for this question.

BOUNDARY

What these records mean

One observed architecture does not establish that related product paths, supplier systems, or industry adoption are field deployed.

Dependency transfer

The bottleneck moves; it does not disappear.

The alternative path can reduce selected rack-level constraints while creating or elevating new engineering and qualification dependencies.

Old path

MV/LV AC→Transformer→UPS→Rectification→Rack PSU→Low-voltage distribution

Alternative path

MV→SST→800VDC→Rack / sidecar / conversion layer→Compute

Candidate dependency release

Lower current
Copper pressure
Distribution density constraint

Dependency transfer — not all solved

DC protectionFault isolationInsulation / partial dischargeConnectors / busbarsSiC / GaNHF magneticsQualificationThermal integration

Subsystem watch

Readiness is subsystem-specific.

Repository-supported states only. UNKNOWN is an intentional result when the approved packet contains no qualifying evidence.

SUBSYSTEM	STATE	EVIDENCE BOUNDARY
SST	FIELD_DEPLOYED · SINGLE INSTANCE	Named 10kV-to-800VDC commercial operation record.
SiC	UNKNOWN	No approved item-level state.
GaN	UNKNOWN	No approved item-level state.
HF transformer	UNKNOWN	No approved item-level state.
HF magnetic material	UNKNOWN	No approved item-level state.
Insulation / partial discharge	UNKNOWN	Transferred dependency; qualification evidence absent.
Thermal management	UNKNOWN	Transferred dependency; qualification evidence absent.
DC protection / SSCB	WATCH	DC protection is a new critical dependency; no subsystem qualification inferred.
Power rack / sidecar	SYSTEM_VALIDATION	Source-reported demonstrations support R3 sample-bench-tested state only.
Busbar / connectors	UNKNOWN	Transferred dependency; item-level evidence absent.
Standards / certification	DEVELOPMENT	Draft specification and work underway do not establish completed certification.

Minimum resolving evidence

Multi-entity field evidence with repeat deployment across a defined market boundary.

No current Open Evidence Gap

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Customer application

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