Self Extinguishing Epoxy Resin Cast Dry Transformer 50kVA 10/0.4kV for Safe and Low Fire Hazard Power Distribution
Transformador tipo seco de 50kVA com isolamento autoextinguível em resina epóxi para maior segurança contra incêndio. Apresenta operação silenciosa, manutenção mínima e design compacto. Está em conformidade com os padrões IEC60076, adequado para distribuição comercial de energia.

This three-phase 50kVA dry-type transformer uses an epoxy resin cast insulation system to combine inherent fire safety with reliable voltage transformation from 10kV down to 0.4kV. By eliminating liquid dielectric, the design removes the leakage and flammability concerns associated with oil-filled units. The result is a compact, self-extinguishing power distribution solution well suited for electrical rooms, substations, and equipment enclosures where personnel safety and property protection are top priorities. Built for continuous duty, the unit integrates easily into new builds and retrofit projects.
- Self-Extinguishing Fire Safety: Epoxy resin encapsulated windings are inherently flame retardant and self-extinguishing, drastically lowering fire propagation risk without relying on active suppression systems.
- Exceptionally Quiet Operation: Optimized core geometry and vibration-damped structural design achieve low sound levels, making the transformer suitable for noise-sensitive electrical installations.
- High Reliability with Minimal Upkeep: Solid insulation removes the need for liquid sampling or leakage monitoring, cutting lifecycle maintenance compared to conventional liquid-filled alternatives.
- Compact and Flexible Installation: The space-saving footprint and optional enclosure ratings (IP20/IP23) allow placement close to load centers, inside electrical rooms or compact packaged substations.
- Robust Environmental Endurance: Epoxy resin casting provides strong resistance to moisture, dust, and chemical contaminants, ensuring stable performance in challenging indoor environments.
| Rated Power | 50kVA continuous duty (natural air cooling AN, with optional forced air AF for increased overload capability) |
| Primary Voltage | 10kV with standard tapping range (e.g., ±2×2.5% or as specified) |
| Secondary Voltage | 0.4kV three-phase four-wire |
| Vector Group | Dyn11 (standard), other configurations available upon request |
| Insulation Class | Class F or Class H insulation system with temperature rise limit typically designed for Class F (100K) or lower, preserving insulation life |
| Winding Material | High-conductivity copper (standard) or aluminum option, fully encapsulated in epoxy resin under vacuum casting process |
| Core Construction | Grain-oriented silicon steel with step-lap joints to reduce no-load loss and noise |
| Cooling Method | AN (natural air cooling) standard, AF (forced air) optional |
| Protection Degree | IP00 open type for well-ventilated indoor cubicles, optional enclosure upgrades to IP20 or IP23 for direct placement in public accessible areas |
| Partial Discharge Level | ≤ 10pC under rated voltage, verified by routine testing, ensuring long-term insulation integrity |
| Standards Compliance | Designed and tested per IEC 60076-11, EN 50588 or equivalent safety and performance standards |
| Overload Capacity | Engineered to sustain short-term overloads in accordance with IEC dry-type transformer guidelines without compromising insulation life |
Electrical installations in commercial buildings, public venues, and similar gathering spaces face twin concerns: stringent fire safety codes and the need for minimal acoustic disturbance near occupied zones. This epoxy resin cast dry-type transformer directly responds to those conditions through targeted design measures.


Contact us today to request detailed technical data, no-load and full-load loss curves, and customized quotation for this self-extinguishing epoxy resin cast dry transformer.
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