VR2R-0507
① SA Source
- Source: 開啟完整 SA 文章
- Section:
Rack Level Infrastructure: Power Delivery - Line hint:
416
Context Before
First, VR NVL72 rack with an HVDC power rack running at 800VDC (Nvidia Spec) or +/-400VDC (OCP Spec). Since the VR NVL72 rack busbar is still running at 50V and the compute tray can only take in 50V, the 800VDC from the power rack cannot be directly delivered to the busbar.
Evidence
There would still be DC-DC power shelves in the VR NVL72 rack.
Context After
The DC-DC power shelves will step down the voltage of the current from 800VDC to 50VDC.
② Atomic Claim
因此 VR NVL72 rack 內仍會配置 DC-DC power shelves。
- Epistemic Mode:
ASSERTED - Mapping Status:
COMPLETE
③ Semantic Frame
{
"frame_type": "NARY_RELATION",
"participants": [
{
"node": {
"id": "04_knowledge_base/VR NVL72",
"label": "VR NVL72"
},
"role": "rack_platform"
},
{
"node": {
"id": "04_knowledge_base/Datacenter power shelf",
"label": "power shelf"
},
"role": "power_conversion"
}
],
"qualifiers": {
"condition_text": "HVDC deployment scenario",
"numeric_mentions": [],
"temporal_mentions": []
},
"relation_type": "VR_NVL72_RETAINS_DC_DC_POWER_SHELVES"
}④ Canonical Entity Mapping
| Role | Surface Label | Canonical Target |
|---|---|---|
| rack_platform | VR NVL72 | 04_knowledge_base/VR NVL72 |
| power_conversion | power shelf | 04_knowledge_base/Datacenter power shelf |
⑤ Human Review
請在 Properties 逐項確認：
- 原文 → Atomic Claim 是否忠實
- Atomic Claim → Semantic Frame 是否忠實
- Canonical Entity mapping 是否正確
- Epistemic mode 是否保留原文語氣
- 最後選擇
review_action
Review state
Markdown 內文不是正式 approval。只有 Apply bridge 寫入的 Decision Ledger event 才是正式決策。