Transformer Factory Acceptance Testing (FAT): Routine Tests, Type Tests and How to Witness Them
Guide to IEC 60076 transformer FAT: routine and type tests, acceptance tolerances, documentation, and how to arrange witness testing.
· 9 min readOil-Immersed Distribution Transformers
This three-phase oil-immersed transformer handles both step-up and step-down duty, rated at 1250 kVA and 1600 kVA within a broader lineup spanning 15 kVA to…
| Parameter | Value |
|---|---|
| Product Type | Three-Phase Oil-Immersed Distribution Transformer |
| Rated Capacity | 1250 kVA & 1600 kVA (range 15 kVA–31500 kVA) |
| Input Voltage | 10 / 11 / 35 kV |
| Output Voltage | 380 V |
| Frequency | 50 / 60 Hz |
| Phase | Three |
| Winding Material | Copper / Aluminium |
| Coil Structure | Fully Sealed Construction |
| Vector Group | Dyn11 / Yyn0 / Yd11 / YNd11 / Dyn5 |
| Service Life | 20–30 Years |
| Standard | IEC / GB |
| Certification | ISO9001 / CE |
| Packing | Wooden Case |
| Package Size | 280 × 200 × 250 cm |
| Gross Weight | 5400 kg |
These specifications reflect the product data supplied. Final dimensions, materials, colors, and packaging are confirmed at the sample and order stage.
Designed and tested to IEC / GB. Millenium production is certified to ISO 9001, ISO 14001 and ISO 45001; the product family carries CE (ECM), UDEM attestation and an EAC declaration of conformity. Every unit passes routine factory tests before dispatch.
This three-phase oil-immersed transformer handles both step-up and step-down duty, rated at 1250 kVA and 1600 kVA within a broader lineup spanning 15 kVA to 31500 kVA, converting between 10/11/35 kV and 380 V. Its sealed tank with corrugated fins keeps oil free from oxidation and eliminates the need for topping-up, supporting a service life of 20 to 30 years in outdoor substation and distribution settings. Windings come in copper or aluminium, all built to IEC and GB standards.
A hermetically sealed steel tank ringed with corrugated cooling fins keeps the transformer oil isolated from outside air, blocking oxidation and moisture while still dissipating heat effectively. The tank cover carries high-voltage porcelain bushings and low-voltage terminals, and the structure includes pressure-relief and oil-level safeguards. Together these elements deliver stable, low-loss performance that needs very little routine attention.
Utilities, industrial plants, mining operations, oil fields, commercial complexes, and rural electrification projects rely on this unit for indoor and outdoor power distribution wherever dependable step-down from medium voltage is needed.
Project requirements can drive changes to capacity, voltage ratio, vector group, winding material (copper or aluminium), tap changer type (off-load or on-load), and bushing configuration.
The rated capacity is 1250 kVA & 1600 kVA (range 15 kVA–31500 kVA), with an input voltage of 10 / 11 / 35 kV. Other ratings in the same series are quoted on request.
A fully sealed, corrugated-fin tank that prevents oil oxidation, needs no breathing, and keeps maintenance to a minimum; Efficient operation thanks to low no-load loss and a low running temperature; A rugged design rated for 20–30 years of service, even in demanding outdoor conditions.
Project requirements can drive changes to capacity, voltage ratio, vector group, winding material (copper or aluminium), tap changer type (off-load or on-load), and bushing configuration.
Designed and tested to IEC / GB. Millenium production is certified to ISO 9001, ISO 14001 and ISO 45001, and the product family carries CE (ECM), UDEM attestation and an EAC declaration of conformity.
Quotation
Tell us the rating, voltages, frequency, quantity and destination. An engineer replies with a technical proposal, usually within one working day.