Power & distribution transformers, built to your specification.
Oil-immersed distribution and oil-type power transformers — plus dry-type (cast-resin) units for indoor and fire-sensitive sites — matched to your project on rating, voltage, cooling and tap-changing; quoted direct from established manufacturers, so you buy from the maker on better terms.
Two transformer families, plus the parts that go with them.
We source distribution and power transformers to your specification and bring you a quotation direct from the manufacturer. Accessories and spares are specified from the same manufacturer alongside the units. Indicative ranges; final specification confirmed per project against the manufacturer’s documentation.
Distribution transformers
Oil-immersed MV/LV units, single- and three-phase, in conservator or hermetically sealed designs with porcelain or plug-in bushings.
- 25–2500 kVA
- System voltage up to 36 kV
- ONAN natural-oil cooling
- Off-load tap changer
Power transformers
Oil-type units engineered to project requirements, with cooling and tap-changer options selected to match the application.
- Rating to project spec
- ONAN / ONAF cooling
- On-load tap changer (OLTC) option
- Copper or aluminium windings
Spares & accessories
Bushings, tap changers, protection and monitoring devices, breathers, valves and fittings — specified from the manufacturer alongside the units.
- Protection & monitoring
- Bushings & cable boxes
- Breathers & valves
- Specified per unit
Specialised & project-specific transformers.
Beyond standard distribution and power, the manufacturer also builds application-specific oil-type transformers — matched to your project and quoted direct. Indicative configurations; specification confirmed per project.
Renewable step-up transformers
Step-up units that raise wind-turbine and solar-inverter output to medium voltage for grid connection — built for cyclic loading, harmonics and outdoor duty.
- Oil-immersed · MV up to 36 kV
- LV matched to turbine / inverter
- ONAN / ONAF cooling
- Electrostatic shield · ester-fluid option
- IEC 60076
Battery storage (BESS) transformers
Bidirectional units interfacing battery storage with the medium-voltage grid through the power-conversion system — built for frequent switching, fast ramping and nonlinear loads.
- Oil-immersed · up to 36 kV
- Bidirectional charge / discharge duty
- K-rated winding · shield option
- ONAN / ONAF / KNAN cooling
- Rating to PCS spec
Special-purpose transformers
Application-specific units: earthing / grounding transformers that create a neutral point for fault protection, and rectifier / isolation transformers for AC–DC systems such as traction and industrial DC.
- Grounding: zig-zag / wye-delta
- Rectifier: 6 / 12 / 24-pulse, phase-shifted
- Oil-immersed · up to 36 kV
- Vector groups to project
Dry-type (cast-resin) transformers.
A separate, oil-free option for indoor and fire-sensitive installations — where liquid-filled units aren’t suitable. Same direct-from-manufacturer route; specification confirmed per project.
Cast-resin · air-cooled
Built for where oil can’t go.
Vacuum cast-resin windings, air-cooled and maintenance-light — suited to humid, polluted or fire-sensitive environments such as hospitals, data centres, commercial buildings and indoor substations.
- Cast-resin · air-cooled (AN / AF)
- From 100 kVA, to project rating
- HV up to 36 kV
- Insulation class F or H
- Indoor enclosure IP20–IP23
- IEC 60076-11 · Ecodesign 548/2014
Fittings available with the units.
Distribution and power transformers are configured with the fittings below, available from the manufacturer alongside the units. Standard and optional status, and availability, vary by rating and design (conservator vs hermetic) and are confirmed per project against the manufacturer’s documentation.
| Fitting | Provision | Notes |
|---|---|---|
| LV & HV bushings (DIN 42530 / 42531) | Standard | Porcelain; arcing horns on the HV side |
| Plug-in (separable) bushings | Optional | In place of porcelain, on request |
| Off-load tap changer (5-position) | Standard | HV side, switched de-energised |
| On-load tap changer (OLTC) | Optional | For regulated supply under load |
| Buchholz / gas-actuated relay | Optional | Standard on larger conservator units |
| Pressure relief valve | Standard | — |
| Hermetic protection relay (DGPT2) | By design | Hermetically sealed units only |
| Dial thermometer with pocket | Standard | — |
| Oil thermometer with contacts | Optional | Remote alarm / trip output |
| Magnetic oil-level indicator | Standard | With alarm contacts as an option |
| Dehydrating (silica-gel) breather | By design | Conservator (non-hermetic) units |
| Oil drain / sampling valve | Standard | DIN flange sized to rating |
| Earthing terminals | Standard | — |
| Lifting lugs & jacking points | Standard | — |
| Bi-directional rollers | Optional | Reversible wheels |
| Rating & diagram plate | Standard | — |
| Radiator or corrugated-fin tank | Standard | By cooling design |
| Cable box / terminal box (LV / HV) | Optional | In place of open bushings |
| Hot-dip galvanised tank finish | Optional | In place of RAL 7033 paint |
Introducer notice
Namera works as an independent introducer: we connect you with the manufacturer and support the commercial process, and your contract is directly with them. That means the manufacturer — as the producer and seller — stands behind the product itself: specifications, certifications, pricing, warranty, delivery, installation, maintenance, repair and returns are all handled directly between you and the manufacturer, on their documentation and terms. Namera doesn’t manufacture, sell, import or supply the equipment, and isn’t a party to the sale. For anything technical or contractual, the manufacturer’s official documentation is the authority. Namera’s role is the introduction and the commercial support, not the supply of the goods.
Tell us about your project.
Send your requirement and we’ll come back with a specification-matched quotation from the manufacturer.