A row of identical closed server racks with stainless liquid-cooling manifolds and hoses dressed in parallel runs down the front

Product category · Group A · data centre & compute infrastructure

Data-centre & rack power

Seven supplier sites build the power chain of an AI rack — busway, outlet, battery, supply, coupling. One contract.

Send us your rack power specification The seven sites

Rack ceiling

142kW

Per-rack power ceiling published by one site in this group

PSU ladder

550W–5.5 kW

CRPS and M-CRPS envelope, 73.5 × 40 × 185 mm at the low end

Bridge time

<1ms

Battery-backup transfer on the in-server module; 1–50 ms supercapacitor tier

Protection

100%

Units passing 1500 V AC hipot and 48–72 h full-load burn-in

01Connection layer · what we supply

Six power families,
one rack envelope.

6 families7 supplier sites42U–52U racks

A finished 1U rack power distribution unit beside a matching DC power shelf on a pale bench

FAM-01

Rack power distribution units

MeteredSwitchedOutlet-metered36 kW max8 per IP

Made by AmpRack · Group A

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

FAM-02

Battery backup shelves

5.12 kWh / 3U<1 ms bridge6,000 cycles at 25 °C5-year warranty

Made by VoltBridge · Group A

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

FAM-03

Supercapacitor modules

1–50 ms tier500k+ cycles at 3.5 V−40 °C cold start48.6 V / 166 F / 130 A

Made by CapStack · Group A

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

FAM-04

CRPS & M-CRPS server supplies

550 W–5.5 kW80 PLUS Titanium96% at 50% loadMTBF >250k h

Made by TitanWatt · Group A

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

FAM-05

Data-centre busway

2,000 A UL 8572,500 A IEC 61439-6Tap-off boxesIntegrated 250–800 A

Made by VoltFab · Group A

A rack battery shelf, a supercapacitor module, a supply module, a vertical PDU and a liquid-cooling manifold plate grouped on a pale bench

FAM-06

Racks, containment & liquid-cooling plumbing

42U–52Uto 132 kW1,600 kg at 4×OCP UQD02/04/06/085,000× mate cycles

Made by RackForge and DryLink · Group A

02Connection layer · who builds it

The seven named sites
behind this category.

7 sitesGroup A1 contract

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

VoltFab

AI data-centre power system EMS, burn-in tested under one quality system.

142 kW per rack96% Titanium±1% metering

UL 62368-1 · UL 1973 · UL 9540A · UL 857 · IEC 61439-6 · 80 PLUS Titanium

TitanWatt

CRPS, CRPS 1600–2400 W and M-CRPS toward GPU power and shelves.

550 W–5.5 kW96% at 50% loadCRPS-185

IEC/UL/EN 62368-1 · CB scheme · FCC Part 15 Subpart B

VoltBridge

BBU battery backup units bridging power excursions in milliseconds.

5.12 kWh / 3U<1 ms15 shelves per bus

UN 38.3 tested · IEC 62619 · CE · EU 2023/1542

AmpRack

Metered, switched and outlet-metered rack PDUs on their own PCBA line.

36 kW per PDU±1% metering100% hipot

UL 62368-1 · IEC 60309 · IEC 62053-21 · FCC Part 15 A · ISO 9001

CapStack

LIC hybrid supercapacitor modules for server backup and industrial ride-through.

1–50 ms tier500k+ cycles−40 °C

UL 810A cell route · IEC 62391 · UN 3499 shipping documents

A finished busway tap-off box and a finished vertical metered rack PDU standing side by side on a pale floor

RackForge

AI racks and cold-aisle containment off their own sheet-metal line.

132 kW per cabinet1,600 kg at 4×±0.1 mm

EIA-310-E · IEC 60297 · GR-63 Zone 4 optional · ISO 9001

A finished stainless liquid-cooling manifold with six dry-break couplings in an even row along its face

DryLink

OCP-compliant UQD quick disconnects and rack manifolds, machined in-house.

±0.01 mm seat100% helium tested5,000× mates

OCP UQD interface compliance · ISO 4406 cleanliness · ISO 9001

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

What we add on top

Every unit here is a populated assembly underneath, and our own PCB & PCBA factory is our engineering baseline.

12/24 ISO 900115/24 RoHS15/24 CE

Read from each site's own published list, 2026-09-13

03Decision layer · choose by requirement

Start from the requirement,
not the part number.

4 requirement pathsreal numbers

REQ-01

Density broke the old power chain

7 kW in 202127 kW in 2026142 kW AI rack

A 10 A C13 outlet at 250 V is a 2.5 kW interface. Connector, PDU, busway and shelf re-specify together.

Source AFCOM State of the Data Center Report via Upsite

REQ-02

Ride-through, measured in milliseconds

BBU <1 msSupercap 1–50 ms6,000 cycles

Where cycle life matters more than stored energy, the supercapacitor tier is the cheaper answer.

Governing site VoltBridge · CapStack

REQ-03

Efficiency written into a tender

90/94/96/91% at 10/20/50/100%PF ≥0.95Ruby 96.5%

80 PLUS Titanium for 230 V internal-redundant server PSUs; Ruby released 2025-03-12.

Governing site TitanWatt

REQ-04

Zero-drip liquid-cooling interfaces

±0.01 mm seat100% helium testedISO 4406

The leak-test report ships in the carton, per unit, rather than as a batch statement.

Governing site DryLink

A flat bar chart of five rising bars with one separate marker standing clear to the right at about five times their height — Fig. A **Average rack power density, 7 kW to 27 kW.**

04Trust layer · standards

What each standard
actually covers.

IEC / UL / ENOCP ORV3UL 94 V-0

OCP ORV3

48 VDC busbar, 18 kW per rack standard and 30 kW liquid-cooled. Rack height 2,286 mm (44 OpenU), 1,400 kg maximum load.

Blind-mate 100 ABusbar 300–1400 AUL 94 V-0 plastics

UL 94 is thickness-bound

One published example rates the same PC/ABS material V-2 at 0.4–0.5 mm, V-1 at 0.6 mm and V-0;5VA at 3.0 mm. Quote the thickness.

Quote the thicknessV-0;5VA at 3.0 mm

IEC / UL / EN 62368-1

The safety baseline for server power, PDUs and IT equipment. The 4th edition drops acceptance of components certified to IEC 60950 or IEC 60065, which reaches into the PSU supply chain.

IEC 2023-05-26EN 2024-04-19CSA/UL 2025-07-31DOW 2027-02-15

Connectors and component status

C13/C14 is rated 10 A / 250 VAC internationally and C19/C20 16 A. Listed covers a complete product; Recognized covers a component.

IEC 60320C15/C16 120 °CC21/C22 155 °C

05Execution layer · how we carry it

Four services carry
a rack power order.

6 service lines1 contract

Two technicians seen from behind at a bench, one holding a document of grey placeholder bars and the other pointing at it

SVC-01

Sourcing & matching

Seven sites, one wrong match.

We read the load profile, then place the order with the site that publishes the number your tender asks for.

An engineering bench under an inspection lamp with a finished circuit board assembly, a magnifier arm and sample connectors

SVC-04

Technical assessment

A datasheet that does not survive your rack.

Written by engineers: derating, connector ratings, coolant compatibility and the gap to your specification.

Digital calipers closed around a machined aluminium housing beside a blank inspection checklist and a sealed sample bag

SVC-05

Production follow-up & QC

The shipped batch is not the sampled batch.

Pre-shipment inspection to ISO 2859-1 general level II, critical defects accepted at zero.

An export loading bay with an open container onto a pale apron and unlabelled cartons on pallets

SVC-06

Export execution

A rack and a battery leave under different paperwork.

FOB by default, FCA for inland stuffing, CFR or CIF when we sell the freight.

06Inputs · what to send us

What to send us.

6 inputsthen a quote

A finished 3U battery backup shelf and a finished metering rack PDU stacked on a pale bench with their cables coiled neatly — Fig. B **Sampled, photographed and recorded before the carton closes.**

01Drawing and BOMRack or manifold drawing, plus a BOM with part numbers and approved alternates.

02Load profilePer-rack kW, phases, and whether metering must be billing-grade.

03Target price and volumeTarget unit price, annual volume, first-order quantity, and the acceptance class for your PO.

04Market and IncotermDestination market, plus FOB, FCA, CFR or CIF.

A finished UQD quick-disconnect coupling pair and a machined manifold plate above two documents laid face down on a bench — Fig. D **Leak-test report and calibration record travel with the goods.**

07Start

Send us your rack power specification.

Name the family or attach the drawing, and we will say which of the seven sites fits.

Recorded. An engineer will reply.

Written technical assessment, from eric@dfshk.cn.

Book a factory visit eric@dfshk.cn · +86 152 3512 7440