Grid distribution
Distribution transformers from 100 to 2500 kVA, medium voltage switchgear and ring main units to 36 kV, and compact substations, to IEC 60076, IEC 62271-200 and IEC 62271-202.
Power and critical infrastructure
Transformers, generators and data centre equipment, sourced to your specification
Send a rating, an equipment schedule or a full specification, for the grid connection, standby power or the data centre floor. We check it, take it to the manufacturers that build to it, and return offers you can compare line by line.
Answered within one business day Requests stored in the EU Manufacturers get the specification, not your details No account, no obligation
92manufacturers mapped by scope, standards and published test evidence
23countries those manufacturers are based in
Tier 2EU and GB loss limits checked on every transformer offer
IEC, IEEEspecifications at 50 Hz and 60 Hz
Three ways to buy
Most requests begin with something incomplete. That is fine.
Engineered equipment
Transformers, switchgear, generators, UPS, busbar trunking and cooling. A rating, the voltages, the site and a date are enough to start, or upload the specification as it is.
Request a quoteExact components
Fiber trunks, breakouts and patch cords, rack PDUs and power cords, configured to a code with the quantity and collected in one request list.
Configure a componentA whole project
Upload the equipment schedule once. Every item keeps its own line, files and date under one project reference.
Send a projectWhat we source
Three lines of equipment, each specified by rating, voltage and site.
Generation
Diesel and gas generating sets from about 100 kVA to 3 MVA for standby, prime and continuous duty, and the transfer switches that hand the load over.
Data centre and critical facility
UPS, busbar trunking and cooling engineered to the load, with fiber assemblies and rack PDUs configured to an exact code.
How it works
From specification to site, one desk
Every step a procurement team is judged on, including the ones nobody sees.
- 01
You send what you have
A rating, a drawing, a schedule or a nameplate. No account and no obligation.
Questions back before anything goes out - 02
We check the specification
Voltages, losses, standards and the rules at the destination are confirmed with you first.
A specification makers can quote - 03
We go to the makers
Manufacturers whose scope and test evidence fit receive it. Their questions come back through us, and every bidder gets the answers.
The same information for every bidder - 04
You compare and choose
Offers arrive on one sheet with the price basis, delivery, losses and documents, and every deviation marked.
One comparison sheet
After the order we follow it through the factory tests, the documents and the delivery to site.
Why buyers use a sourcing desk
A procurement desk for power equipment, without hiring one
Most teams buy a transformer, a generator or a UPS every few years and start from zero each time. We keep the market mapped between those purchases, and the decision stays yours.
More of the market
Beyond the three suppliers already on file, to makers you may not know, each screened against EU and UK sanctions lists before a request goes out.
A specification that holds
Gaps and contradictions are raised before the market sees your request, not after the first offers arrive.
Offers you can compare
Same lines, same units, deviations marked, so a difference in price means something.
One contact to the end
From the first question to the warranty file, one person keeps the thread.
What you receive
The documents that let an engineer sign off and a buyer defend the choice.
A comparison sheet
Every offer on the same lines: price basis, delivery terms, losses, documents and deviations from your specification.
Where it is built
Each offer states the country of manufacture and the laboratory behind its type tests. The maker is named as soon as it agrees to be.
Test evidence
Type test references with the offer for the configuration quoted, and routine test reports before shipment.
Comparison sheetRequest DV-0000, 1000 kVA
| Line | A | B | C |
|---|---|---|---|
| Manufacturer | Maker A, Italy | Maker B, Türkiye | Maker C, Poland |
| Rating, voltages | 1000 kVA, 20/0.4 kV | 1000 kVA, 20/0.4 kV | 1000 kVA, 20/0.4 kV |
| Losses Pk / P0 | 7,450 / 650 W | 7,600 / 693 W | 7,380 / 620 W |
| Impedance uk | 6.0 % | 6.0 % | 6.0 % |
| Tapping range | ±2 × 2.5 % | ±2 × 2.5 % | ±5 % in one step |
| Type test | report named | report named | report named |
| Delivery terms | DAP site | FCA works | DAP site |
| Offer valid | 60 days | 45 days | 60 days |
What every quotation states
Every quotation states the country of manufacture and the laboratory behind the type tests, and confirms the specification, the documents, compliance, the price and the delivery date for your project.
Applications
Where the equipment goes
Data centres
Grid connection, standby generation, UPS, cooling and fiber, planned as one project around the load.
Renewables and storage
Stations and transformers for solar and battery connections, built to the grid code.
Utilities and networks
Distribution transformers and ring main units to the network operator's specification.
Industrial sites
Replacement and expansion, matched to the fault level and the equipment already installed.
Commercial buildings
Indoor transformers, switchboards and substations sized for the building and its rules.
Find a transformer by rating
Standard ratings with the full load current at 400 V. Each opens its own page, or its row in the rating series on the distribution transformer page.
Currents calculated as S / (√3 × V) and rounded.
UK and Gulf
Rules that change an order here
Each with the page that explains it, read from the regulation or the utility's own document.
Permits for sets near 1 MW
In England and Wales a set of 1 MW thermal input or more is medium combustion plant and needs its permit, even as an emergency backup tested 50 hours a year or less.
No SF6 ban in Great Britain
The EU dates for gas insulated switchgear bind Northern Ireland, not Great Britain, whose assimilated F gas regulation has no SF6 switchgear ban.
Operators adopt to ENA TS 35-1
UK network operators specify distribution transformers of 25 to 2000 kVA to ENA TS 35-1, now Issue 8 of March 2026.
Temperature rise at 50 °C
IEC 60076-2 lowers every rise limit by the amount a site exceeds 40 °C; Kahramaa designs for 50 °C in Qatar and DEWA for 50 °C in Dubai.
Knowledge
Tools and references
Free to use, cite and embed. Each one shows its sources.
Calculator
Transformer sizing calculator
From a load in kW to a standard rating, with the values carried into a request.
Calculator
kVA to amps calculator
The full load current for any rating and voltage, three phase or single phase.
Reference
EU transformer loss limits
Tier 2 maximum load and no load losses for every rating, liquid and dry.
Reference
Standards cross reference
Which IEC, EN and IEEE standard governs which equipment, and what replaced what.
Have a specification, a drawing or a nameplate?
Send it as it is. We read it, raise what is missing and take it from there.
Answered within one business day Requests stored in the EU Manufacturers get the specification, not your details No account, no obligation