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Grid-to-Chip P4 · Hall Power: the relocation of the power-conversion boundary

29 August 2026 · 50 min read · Updated 30 Aug 2026
Grid-to-Chip P4 Hall Power feature: hall-level power stack from campus MV feed through UPS/BBU/BESS to rack input, with the P4.1-P4.4 taxonomy and V1-V4 vintage progression footer
The P4 stack: P4.1 hall input, P4.2a UPS + conditioning, P4.2b UPS battery / BBU, P4.2c hall BESS, P4.3 distribution (RPP / PDU / 800V busway), P4.4 hall/rack interface. Migrates across V1 legacy AC → V2 hybrid 800V DC sidecar → V3 row-level 800V DC → V4 native 800V DC facility.
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