Fully integrated AI rack power chain from overhead busway to server outlets

POWER SYSTEMS / INTEGRATED RACK POWER

One Rack. One Factory. Every Volt.

Name: VoltFab Integrated Rack Power System
Brand: VoltFab

The complete data center power system as a single deliverable: overhead busway, rack PDU, CRPS power shelves, BBU and supercapacitor engineered together, tested together and warrantied by one factory — from the 800VDC feed down to outlet-level metering.

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SYSTEM SHEET

Rack power	Up to 142 kW NVL72-class
Primary feed	800VDC / 415V interface
Distribution	Busway 160–800A → rack PDU
Conversion	CRPS shelves · 96% Titanium
Buffer	BBU 51.2V LFP + supercap LIC
Metering	±1% billing-grade at outlet
Accountability	One factory · one QA file

POWER CHAIN, LAYER BY LAYER

Every layer owned or interfaced.

An integrated rack power system is only as strong as its weakest seam. This is the full chain for a 142 kW-class AI rack, with VoltFab's build scope marked line by line.

Layer	Typical level	VoltFab scope
Utility & feeder intake	MV/LV service, generators	Interface — coordinated with your electrical contractor
Primary feed	800VDC / 415V 3φ	Interface — feeder busway to 6300A available
Overhead busway	160–800A tap-off runs	VoltFab builds — UL 857 / IEC 61439-6
Rack PDU	16–63A · ±1% metering	VoltFab builds — OEM outlet maps
Conversion & buffer	CRPS 96% Ti · BBU 51.2V LFP · 48V supercap	VoltFab builds all three, shelf-integrated
IT load	Outlet-level metering & switching	Scope ends at the outlet — telemetry continues via API

Integrated rack power build with busway drop, PDU and power shelf, vertical view

WHY ONE FACTORY

Interface risk does not survive a single QA file.

Multi-vendor racks fail at the seams: PDU firmware the shelf manager cannot poll, BBU CAN frames the PSU telemetry ignores, tap ratings the PDU inlet never anticipated. When one factory owns busway, PDU, PSU, BBU and supercapacitor, those seams become internal hand-offs. Joint commissioning runs on our floor before a crate opens on yours, and lead times move together instead of lining up serially behind the slowest vendor.

1 QA file per rackPre-ship joint commissioningSame-day line lead-time sync

THE FOUR BUILDING BLOCKS

Specified together, shipped together.

Overhead Busway

160–800A open-channel track, UL 857 at 600V, IEC 61439-6 type-tested, tool-free tap-offs from 80–400A with per-tap metering.

Explore Busway →

Smart Rack PDU

Five tiers from Basic to Switched+Outlet, ±1% billing-grade metering, 3φ to 22kW+, SNMPv3 / Modbus TCP / Redfish.

Explore Rack PDU →

BBU and supercapacitor modules in a power shelf

BBU + Supercapacitor

Dual-layer buffering: 51.2V LFP bridging across the genset window, hybrid LIC absorbing millisecond transients — UL 1973 / 9540A, UN38.3.

Explore BBU → Explore Supercap →

CRPS power supply modules in a 54V power shelf

CRPS Power Shelves

550W–5.5kW+ modules at 96% Titanium efficiency, 54V direct-to-rail for GPU racks, N+N hot-swap, 100% burn-in.

Explore CRPS →

SYSTEM NUMBERS

What one accountable chain buys you.

142 kW

rack power ceiling covered, NVL72-class

96%

Titanium conversion efficiency at the shelf

±1%

billing-grade metering at the outlet

48h

engineering DFM feedback on any RFQ

Engineer verifying integrated rack power commissioning data

COMMISSIONING DETAIL

One test record follows the chain.

A pilot integrated rack leaves with system-level evidence: busway tap temperature-rise data, PDU metering accuracy against reference, PSU burn-in logs, BBU bridging capture under real load steps. When the same chain later needs a firmware poll or a spare, there is exactly one serial range and one supplier to call — not four warranties pointing at each other.

System-level type testsOne serial range per rack48h DFM on RFQ

FAQ

Integration questions we hear most.

How do you work with our system integrator or electrical contractor?

The scope splits at the busway tap. VoltFab owns the rack-internal power chain — busway run, PDUs, power shelves, BBU and supercapacitor — and hands your contractor interface drawings, test records and commissioning data. The contractor retains the service entrance and facility-side distribution. No one's license or liability is stepped on.

Where does VoltFab's responsibility start and stop?

It starts at the busway tap-off and ends at the PDU outlet plus its telemetry API. Within that span one warranty, one QA file and one escalation path cover busway, PDU, PSU, BBU and supercapacitor — the boundary is written into the order, not discovered during an incident.

Can we buy only part of the chain?

Yes. Every product line sells standalone to integrators and operators. Bundling adds the things partial orders cannot get: joint commissioning on the factory floor before shipment and lead times synchronized across the chain instead of arriving serially.

What does a pilot integrated rack program look like?

RFQ to 48-hour DFM feedback, then a pilot rack that passes type tests and burn-in as a system rather than as parts, then mass production. Whenever BBU modules are in the build, UN38.3 export documentation ships with them — and the pilot's test record becomes the acceptance baseline.

INTEGRATED RACK POWER

Bring the rack elevation — leave with one accountable power chain.

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