Cast Resin Dry Type Transformers
Epoxy cast resin windings, no oil, no oil containment. That is the short version of why these go indoors — into building vaults, hospital basements and data halls where a leak is not an option.
What the specification covers
| Insulation | Class F (155 °C) / Class H (180 °C) epoxy cast resin |
|---|---|
| Cooling | AN natural air, with AF forced-air blower as an option |
| Windings | Copper or aluminium, on CRGO silicon steel core |
| Frequency | 50 Hz or 60 Hz |
| Vector group | Dyn11 as standard, others on request |
| Short-circuit impedance | Per rating, typically 4.0 – 6.0% |
| Temperature rise | Winding rise ≤ 100 K (Class F) / ≤ 125 K (Class H) |
| Sound level | ≤ 60 dB at one metre |
| Enclosure | IP00 open type, IP20 or IP23 enclosures available |
| Standards | IEC 60076-11, GB/T 10228-2015, as applicable to the order |
| Warranty | Two years |
| Delivery time | Typically 30 days, depending on quantity |
| Min. order quantity | 1 set |
Typical installation
- Indoor vaults and electrical rooms.
- Commercial buildings, hospitals and data centres.
- Industrial plants with clean, dry indoor space.
- Retrofit sites replacing older oil units.
Before you order
- Confirm the insulation class — F or H — against the room temperature.
- Check the room volume and ventilation against the losses.
- Decide whether the AF blower is needed for the peak.
- Leave clearance for airflow and for pulling the unit out.
Questions buyers ask
Rating, primary and secondary voltage, frequency, vector group, quantity, application and the ambient conditions. A drawing or a nameplate photo settles most of it.
Typically 30 days from order confirmation, depending on quantity and specification. The schedule is confirmed with the quotation.
The standard named in the order. Ratings are designed to comply with IEC 60076, IEEE C57 or ANSI C57 as applicable to the order, and are verified before dispatch.
Yes. A routine test report for the serial number, an outline drawing and a terminal diagram ship with every unit.
About the manufacturer
Send us the specification
Rating, primary and secondary voltage, frequency, quantity and the application. We answer within one working day.
Email info@xsdfftransformer.com · WhatsApp +852 54162620