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 readPower Transformers (up to 110 kV)
This three-phase oil-immersed transformer, rated 15 or 20 MVA, converts a 33 or 66 kV supply down to 10 kV or 415 V, built to handle substation, industrial…
| Parameter | Value |
|---|---|
| Product Type | Three-Phase Oil-Immersed Power Transformer |
| Rated Capacity | 15 / 20 MVA |
| Input Voltage (HV) | 33 / 66 kV |
| Output Voltage (LV) | 10 kV / 415 V |
| Frequency | 50 / 60 Hz |
| Phase | Three |
| Winding Material | Copper / Aluminium |
| Vector Group | Dyn11 / Yyn0 |
| Cooling | ONAN / ONAF (oil-immersed, radiator) |
| Standard | IEC / GB |
| Certification | CE, UL, ISO9001 |
| Packing | Wooden Case |
Figures shown reflect the supplied product data. Exact dimensions, materials, finish and packaging are confirmed at sample approval and order confirmation.
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, rated 15 or 20 MVA, converts a 33 or 66 kV supply down to 10 kV or 415 V, built to handle substation, industrial and oil-field power needs. Construction includes a sealed steel tank, radiator cooling and a conservator oil-expansion system, engineered specifically to withstand harsh field conditions such as those found on oil-and-gas sites. Copper or aluminium windings meet IEC/GB requirements.
High-voltage porcelain bushings sit on the sealed tank alongside a top-mounted conservator for oil expansion, radiator banks for heat rejection, and a control cabinet for monitoring and protection. The oil-immersed build keeps cooling efficient and insulation stable, giving reliable performance in both substation settings and oil-field power systems.
Well suited to oil-and-gas field power supply, utility and industrial substations, transmission and distribution networks, and large plants needing 33/66-kV-class transformation.
Capacity, HV/LV voltage, vector group, tap-changer type, cooling class and fittings can be adapted to a project's single-line requirements.
The rated capacity is 15 / 20 MVA, with an input voltage of 33 / 66 kV. Other ratings in the same series are quoted on request.
Covers 33 / 66 kV service in 15 or 20 MVA ratings for substation and oil-field applications; Sealed oil-immersed tank with radiator cooling and conservator; Dyn11 / Yyn0 vector groups match single-line requirements.
Capacity, HV/LV voltage, vector group, tap-changer type, cooling class and fittings can be adapted to a project's single-line requirements.
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
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