The 1250kVA single-phase dry-type transformer is designed for high-capacity power conversion in commercial and industrial low-voltage distribution systems where safety, reliability, and environmental performance are essential.
As a step-down transformer, it efficiently reduces the input voltage to a stable secondary voltage suitable for supplying large electrical loads, control panels, and sensitive electronic equipment. The dry-type insulation structure eliminates insulating oil, significantly lowering fire risk and making the transformer ideal for indoor installations and locations with strict safety regulations.
On the secondary side, the transformer can be configured to operate with rectifier units, converting alternating current into direct current to meet the power requirements of automation systems, precision machine tools, and electromechanical integrated equipment. Its low partial discharge level and excellent electrical insulation ensure clean and reliable power output.
Featuring low no-load loss, strong short-circuit withstand capability, and high thermal endurance, the 1250kVA single-phase dry-type transformer maintains stable performance under continuous and heavy-load operating conditions. The compact design also helps optimize space utilization in substations and electrical rooms.
This transformer is widely used in industrial plants, commercial buildings, data centers, transportation infrastructure, and as a dedicated power source for imported critical equipment. It offers a reliable, low-maintenance, and environmentally friendly solution for modern power distribution networks.
Type description
1250kVA Single-Phase Dry-Type Transformer – Technical Specifications
| Item | Specification |
|---|---|
| Rated Capacity | 1250 kVA |
| Phase | Single Phase |
| Transformer Type | Dry-Type Power Transformer |
| Primary Voltage | 6kV / 10kV / 11kV / 13.8kV / 20kV (customizable) |
| Secondary Voltage | 400V / 380V / 230V / 220V / 110V (customizable) |
| Frequency | 50Hz / 60Hz |
| Cooling Method | AN (Air Natural) / AF (Air Forced) |
| Insulation Class | Class F / Class H |
| Temperature Rise | 100K / 125K |
| No-Load Loss | Low-loss design, compliant with IEC & DOE efficiency requirements |
| Short-Circuit Withstand | High short-circuit strength, suitable for heavy-duty applications |
| Partial Discharge | < 10 pC |
| Insulation Material | Epoxy resin cast or vacuum pressure impregnated (VPI) |
| Installation | Indoor installation |
| Protection Class | IP00 / IP20 / IP23 (optional enclosure) |
| Standards | IEC 60076 / ANSI / IEEE / GB (optional) |
| Typical Applications | Industrial plants, data centers, commercial buildings, automation systems, precision equipment |



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