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Epoxy cast-resin dry-type transformers from 100 kVA to 2,500 kVA, 6.3–22 kV, Class F/H insulation, for indoor, fire-sensitive and high-rise installations.
Cast-resin dry-type transformers have no oil to leak or burn, which is why building codes put them inside hospitals, data centres, high-rise buildings, tunnels, ships and mines. Millenium vacuum-casts the epoxy coils on site, giving Class F or Class H insulation, partial-discharge-tested windings and a compact footprint that can be installed next to the load.
Ratings run from 100 kVA to 2,500 kVA at 6.3, 10, 11, 13.8, 15, 20 and 22 kV, with IP00 open frames or IP20–IP54 enclosures, forced-air (AF) cooling for 140–150 % overload and temperature-controller options.
No products match that search. Try a rating (e.g. “1600 kVA”), a voltage (“33 kV”) or a type (“ring main unit”) — or describe what you need and we will configure it.
Guide to IEC 60076 transformer FAT: routine and type tests, acceptance tolerances, documentation, and how to arrange witness testing.
· 9 min read
A copy-able checklist of the electrical, mechanical and documentation data a transformer manufacturer needs to issue an accurate, comparable quotation.
· 8 min read
Compare oil-immersed and cast-resin dry-type transformers on losses, fire safety, cost, maintenance, overload and environment to pick the right type.
· 7 min read
11 kV/0.4 kV cast-resin dry-type transformer, indoor installation — Platinum mining and mineral-processing surface facility. 11 kV primary / 0.4 kV…
Read the project sheet →Choose dry-type whenever the transformer sits indoors, near people or in a fire-sensitive building — it removes the oil fire risk, needs no bund or drainage and has minimal maintenance. Choose oil-immersed for outdoor substations where lower losses and cost per kVA matter more.
Class F (155 °C) as standard with a 100 K temperature rise, or Class H (180 °C) on request; the epoxy cast-resin coils are partial-discharge tested to IEC 60076-11.
Yes. IP20 to IP54 enclosures, cross-flow fans for AF overload capacity and a winding temperature controller with alarm and trip contacts are all available.
The catalogue shows typical configurations. Every product is built to order — send your single-line diagram or spec and we will quote the exact unit.