A cold aisle down a row of high-density liquid-cooled racks, with stainless manifolds and parallel hose runs at the rear

Industry · Group A · seven supplier sites · Shenzhen

Data centre & AI infrastructure

The power chain for a rack that draws 132 kW is not a bigger version of the one built for 12 kW. It is re-specified.

Send us your rack power spec The seven Group A sites

Per-rack ceiling

142kW

Published per-rack power ceiling across Group A; 132 kW per cabinet on the rack side

Average density

27kW

2026 average rack density per AFCOM, against 7 kW in 2021

Downtime cause

43%

Outages causing major financial loss traced to power problems

Group A sites

7/24

Independently operated sites: power conversion, distribution, continuity, steel and cooling

01Pain points · what decides the programme

Four numbers that decide whether a standard part fits.

27 kW average142 kW ceiling43% of downtimeDOW 2027-02-15

Each figure below is the source's own, carried with its date and its basis.

A data-hall row of closed racks and slim power shelves receding down a wide aisle

Density outran the distribution architecture Average rack density reached 27 kW in 2026, from 7 kW in 2021. A GB300 NVL72 rack draws up to 142 kW, past 2,500 A on a ~50 V busbar. AFCOM via Upsite · NVIDIA · barrack.ai

A finished 1U rack power distribution unit beside a rack-mounted DC power shelf

Power is still the top cause of outages 43% of outages producing a major financial loss were traced to power problems. Uptime Institute, cited by Legrand

A finished coolant distribution unit with two quick-disconnect hose ports and a copper cold plate

Liquid cooling is arriving faster than the interface Penetration moves 14% in 2024 to 53% in 2026, a forecast. Separately, 19% of operators have deployed it. TrendForce (forecast) · AFCOM

A finished CRPS server power supply module with a perforated intake face and a gold edge connector

The safety standard is mid-transition IEC 62368-1 4th edition published 2023-05-26; CENELEC DOW 2027-02-15. The 4th edition drops acceptance of 60950 and 60065 components. IEC · CENELEC

02Technical requirements · written into the spec

What a rack engineer actually specifies.

ORV3 48 V DC80 PLUS TitaniumIEC 60320

Standard values, quoted with the document they come from rather than a supplier's summary of it.

Interface and efficiency values that decide the part
Parameter	Value	Basis
Rack power	48 V DC, 18 kW standard	Open Rack V3, 30 kW under liquid cooling; 44 OpenU; 1,400 kg rack load.
Blind-mate connectors	100 A power and return	ORV3; 65 A chassis ground for two minutes; 1.5 A presence detect.
Rack busbar	300 / 600 / 1200 / 1400 A	ORV3 rack busbar ratings.
Liquid manifolds	30 kW per rack	Dripless quick disconnects over a 10–60 °C working range.
PSU efficiency	96% at 50% load	80 PLUS Titanium: 90 / 94 / 96 / 91% at 10 / 20 / 50 / 100% load, power factor 0.95. Ruby raises 50% to 96.5%.
Couplers	C13/C14 10 A · C19/C20 16 A	IEC 60320 international ratings, 15 A and 20 A in North America. Current only.

A flat technical diagram of a journey line with four stage markers and two teal transfer bars — Fig. 01Stage markers in the specification. Feed, distribution, rack busbar, shelf: each stage carries its own limit and its own certificate.

Three-phase changes the answer 208 V single-phase and 415 V three-phase are different PDUs, different plugs and different metering classes.

A finished 48 V supercapacitor module with four cells in a machined cradle and copper busbar terminals

Metering level is a cost line Rack-level and outlet-level metering are separate products with separate price points.

A finished 48U AI server rack with its door open, filled with identical closed 1U units

Airflow is a rack decision Front-to-rear airflow, blanking panels and containment change the inlet temperature before the PSU changes.

Coolant chemistry is specified too Manifold material, hose rating and fluid compatibility decide whether a coupling stays dripless in year five.

Where this is checked How we check a claim Pre-shipment inspection Data-centre & rack power

03Connection layer · what we supply

Four layers of the power chain, four Group A sites.

Group A · 7 sitesEach independently operated

Every figure on these cards is a published site or product number, not a company statistic.

A rack battery backup shelf, a supercapacitor module, a CRPS module, a vertical PDU and a coupling manifold plate staged in one row

A-01

VoltFab — integrated rack power

142 kW rack ceiling 96% Titanium ±1% metering 100% burn-in

Group A · PDU, BBU, supercapacitors, CRPS and busway under one quality system

A-02

TitanWatt — CRPS & M-CRPS supplies

550 W–5.5 kW ladder 96% at 50% load CRPS-185 envelope MTBF 250k h

Group A · Titanium-class server power for GPU-dense racks, RFQ in 48 hours

A-06

RackForge — racks & containment

132 kW per cabinet 42U–52U 1,600 kg static MOQ 5 units

Group A · Cold-aisle containment on their own sheet-metal line; 30 days FOB

A-07

DryLink — UQD couplings

OCP UQD02/04/06/08 ±0.01 mm valve seat 5,000× mate cycles MOQ 50 pcs

Group A · Helium leak tested one by one, report in the carton

04Trust layer · standards that apply

Codes only, stated for what each one actually covers.

No holder namesNo certificate numbersNo bare CE claim

A technical scope document beside a board sample on a pale bench under even light

UL 62368-1, with the status named Listed applies to complete equipment; Recognized Component applies to a part intended for installation inside it. A build of Recognized parts is not thereby Listed.

A finished busway run with three tap-off boxes and rotary breaker handles, suspended on brackets

Flammability needs a thickness A UL 94 rating is thickness-bound: the same material can rate V-2 at 0.4 mm and V-0 at 0.75 mm.

Digital calipers closed around a machined aluminium housing beside a blank inspection checklist

Efficiency marks are not safety marks 80 PLUS Titanium and Ruby measure efficiency and power factor. Nothing about safety, lifetime or transfer behaviour.

Power distribution has its own set UL 857 to 2,000 A for busway; IEC 61439-6 to 2,500 A; IEC 62053-21 for billing-grade metering.

A finished 2U rack battery backup unit with a perforated front grille and heavy DC terminals

Batteries carry a second rule set UL 1973, UL 9540A and IEC 62619 for the pack, UN 38.3 for transport, and EU 2023/1542 duties on the EU market.

A close macro view of an impedance-controlled board cut edge under laboratory light, held in a plain black fixture

Coverage, counted rather than claimed Of the 24 partner sites, 12 list ISO 9001, 15 list RoHS and 15 list CE, read on 13 September 2026.

05Programme archetype · anonymised

Two shapes of programme, no names attached.

132 kW cabinet<1 ms bridge5,000× mate cycles

Power chain on a 132 kW cabinet Rack, busway and PDU specified together, metered to ±1% per outlet, with a calibration record shipped per batch.

A finished rack battery backup unit with a perforated front grille and heavy DC terminals

Rack backup on a sub-millisecond bridge 5.12 kWh shelves with CAN current-sharing across up to 15 shelves, plus supercapacitors for the excursion a battery never sees.

06Programme archetype · how to read them

Archetypes, not references.

Published product factsNo customer namedNo client logo

A rack battery backup shelf, a supercapacitor module, a CRPS module and a metering unit staged in one row

Where the numbers come from Every figure is a published product specification for a Group A site, not a company statistic.

A cold aisle down a row of high-density liquid-cooled racks with stainless manifolds at the rear

What an archetype describes The shape of work these sites support, not a delivered contract reference.

Who is accountable The site builds the part. We carry the contract, the engineering review and the export.

07Execution layer · what to send

What to send, and what comes back.

Written assessmentSite namedStandards named

A written technical assessment naming the site that would build it, the standards it would be inspected against, and the open questions.

A blank unmarked form on a clipboard with abstract ruled lines and empty tick boxes

What do I send with the enquiry? Rack kW and U height, AC input and phase, whether the shelf is 48 V DC or the 800 VDC route, metering level, quantity and destination country.

Is 800 VDC quoted today? 800 VDC facility power for 1 MW racks is announced from 2027 onward. Which architecture year you buy into changes the site selection.

An open container on a pale loading apron with unlabelled cartons on pallets

What are the commercial terms? Default FOB; FCA where the goods are stuffed inland; CFR or CIF only when we sell the freight. The ex-works rule is not quoted.

08Start

Send us your rack power spec.

Rack kW, U height, AC input and destination country.

Recorded. An engineer will reply.

Default term is FOB, FCA for inland stuffing. The ex-works rule is not quoted. Written assessment from eric@dfshk.cn.

What comes back eric@dfshk.cn · +86 152 3512 7440