10kV dry three-phase double-winding off-circuit regulating distribution transformer
Rated Capacity: 400–2,500 kVA
High Voltage: 6 / 6.3 / 6.6 / 10 / 10.5 / 11 kV
Low Voltage: 0.4 kV
Transformer Type: Three-phase dry-type double-winding distribution transformer
Vector Group: Yyn0 / Dyn11
Voltage Regulation: Off-circuit, tapping range ±2×2.5% / ±5%
Product Introduction
Product Overview
Yawei Electric's 10 kV dry-type three-phase double-winding off-circuit regulating distribution transformer is designed for medium-voltage distribution applications. The parameter table lists rated capacities from 400 to 2,500 kVA, high-voltage options of 6 / 6.3 / 6.6 / 10 / 10.5 / 11 kV, and a 0.4 kV low-voltage side.
Available table configurations include Yyn0 / Dyn11 vector groups and off-circuit tapping ranges of ±2×2.5% / ±5%. Final capacity, voltage, winding, enclosure, cooling arrangement and applicable standard are confirmed against the project specification and technical agreement.
Technical Specifications
10 kV dry-type three-phase double-winding off-circuit regulating distribution transformer (400–2,500 kVA).
| Rated capacity (kVA) | HV (kV) | Tapping range (%) | LV (kV) | Vector group | No load current (%) | Impedance voltage (%) | No load losses (kW) | On load losses - B (100°C) (kW) | On load losses - F (120°C) (kW) | On load losses - H (145°C) (kW) |
|---|---|---|---|---|---|---|---|---|---|---|
| 400 | 6 / 6.3 / 6.6 / 10 / 10.5 / 11 | ±2×2.5 / ±5 | 0.4 | Yyn0 / Dyn11 | 0.8 | 4.0 | 0.57 | 3.375 | 3.59 | 3.85 |
| 500 | 0.8 | 0.67 | 4.13 | 4.39 | 4.705 | |||||
| 630 | 0.7 | 0.775 | 4.975 | 5.29 | 5.66 | |||||
| 630 | 0.7 | 6.0~8.0 | 0.75 | 5.05 | 5.365 | 5.76 | ||||
| 800 | 0.7 | 0.875 | 5.895 | 6.265 | 6.715 | |||||
| 1000 | 0.7 | 0.92 | 6.885 | 7.315 | 7.885 | |||||
| 1250 | 0.7 | 1.205 | 8.19 | 8.72 | 9.335 | |||||
| 1600 | 0.7 | 1.415 | 9.945 | 10.555 | 11.32 | |||||
| 2000 | 0.6 | 1.76 | 12.24 | 13.005 | 14.005 | |||||
| 2500 | 0.6 | 2.08 | 14.535 | 15.445 | 16.605 |
Application


Customization Service

Certifications

Packing and Delivery
Testing and Quality Assurance
Each transformer undergoes factory testing before delivery according to the agreed specification, including:
- Routine tests (ratio, resistance, losses)
- Type tests (temperature rise, impulse test)
- Special tests (upon request)
Applicable standards and required tests are confirmed according to the project specification and final technical agreement.
Installation and Maintenance
Installation and maintenance requirements are determined by the selected enclosure, cooling arrangement, site conditions, and final technical agreement.
Tell us the required capacity, primary and secondary voltages, phase, frequency, installation environment, applicable standard, and delivery destination. Our sales and engineering teams will review your requirements and respond within one business day.

