20kV / 22kV Dry-Type Transformers
Cast-resin power distribution.
Configured for your project.
Engineered for Medium-Voltage Power Distribution
YIMENG 20kV / 22kV dry-type transformers are specified for medium-voltage power distribution projects in residential communities, commercial buildings, industrial plants and infrastructure facilities. A cast-resin, three-phase configuration provides an oil-free transformer option for indoor electrical rooms. Select the voltage ratio, rated capacity and enclosure to match your project requirements.
Configure your 20kV to 400V or 22kV to 415V transformer around the required secondary voltage, load profile and installation conditions. Natural-air (AN) and fan-assisted (AF) cooling options can be reviewed together with copper or aluminum windings, temperature monitoring and access for maintenance.
For coastal facilities, humidity, salt exposure and room ventilation must be assessed during specification. Share the installation altitude, ambient temperature, required losses and insulation coordination so the engineering team can confirm a suitable configuration and quotation.
Dry-Type Design
Air Cooling
Temperature Monitoring
Project Configuration
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Dry-type transformer (cast-resin insulation) |
| Primary Voltage | 20kV / 22kV — project configuration |
| Rated Capacity (kVA) | 30 / 50 / 80 / 100 / 125 / 160 / 200 / 250 / 315 / 400 / 500 / 630 / 800 / 1000 / 1250 / 1600 / 2000 / 2500; subject to confirmation |
| Secondary Voltage | 0.4kV / 400V / 415V / 433V / Customizable |
| Frequency / Phases | 50 / 60Hz / Customizable; 3 phases |
| Vector Group | Dyn11 / Yyn0 |
| Cooling Method | AN (Air Natural) / AF (Air Forced) |
| Tapping Range | To be confirmed |
| Tap Changing Mode | NLTC / OLTC; subject to configuration |
| Standards for Confirmation | IEC 60076-11 / GB/T 10228-2023 |
| Winding Material | Copper / Aluminum |
| Insulation Class | Class F / Class H |
| Installation / Enclosure | Indoor; IP00 (open type) / IP20 / IP23 |
| Short-Circuit Impedance | 4% / 5% / 6% / Customizable; confirm for selected rating |
| No-Load Loss / Load Loss | Customizable |
| No-Load Current | Customizable |
| Insulation Level (kV) | To be confirmed for 20/22kV insulation coordination |
| Temperature Rise Limits | Customizable |
| Temperature Control | PT100 / PTC thermistor + temperature controller; confirm sensor scheme |
| Fan Configuration | Optional forced-air cooling |
| Dimensions / Total Mass | Customizable |
| Noise Level | To be confirmed |
| Other Applicable Requirements | Project-specific |
All 20/22kV configurations require engineering confirmation. Final configuration and technical values are subject to project confirmation.
Configurable for Your Project
Voltage Ratio
Capacity
Cooling
Enclosure
Monitoring
Applications
Illustrative application scenarios. Coastal installations require suitable indoor environmental protection.
Discuss Your Dry-Type Transformer Project
Send your required primary and secondary voltages, rated capacity, frequency, cooling preference, enclosure, installation altitude and ambient temperature. Include loss requirements and applicable project standards for configuration review.
