Product Overview
The 6–37kV dry type distribution transformer is manufactured with high-quality insulation materials and does not require oil as a cooling medium. It is safe, environmentally friendly, and easy to maintain.
With a compact structure, stable operation, and excellent heat dissipation performance, this transformer can operate reliably for long periods in high-temperature, humid, and complex environments.
This series is widely used in urban power distribution networks, industrial enterprises, commercial buildings, public facilities, and renewable energy projects. It is mainly used for voltage step-up, step-down, and safe power distribution.
Technical Specifications
| Item | Specification |
|---|---|
| Product Type | Dry Type Distribution Transformer |
| Voltage Range | 6–37kV |
| Rated Capacity | 20–6300kVA |
| Low Voltage | 0.4–1.14kV |
| Vector Group | Dyn11 / Yyn0 |



Technical Parameters
| Product Model | Rated Capacity (kVA) |
No-load Loss (W) |
Load Loss B (100°C) |
Load Loss F (120°C) |
Load Loss H (145°C) |
No-load Current (%) |
Impedance (%) |
|---|---|---|---|---|---|---|---|
| SC(B)-30 | 30 | 105 | 605 | 640 | 685 | 2.0 | 4.0 |
| SC(B)-50 | 50 | 155 | 845 | 900 | 965 | 2.0 | 4.0 |
| SC(B)-80 | 80 | 210 | 1160 | 1240 | 1330 | 1.5 | 4.0 |
| SC(B)-100 | 100 | 230 | 1330 | 1415 | 1520 | 1.5 | 4.0 |
| SC(B)-125 | 125 | 270 | 1565 | 1665 | 1780 | 1.3 | 4.0 |
| SC(B)-160 | 160 | 310 | 1800 | 1915 | 2050 | 1.3 | 4.0 |
| SC(B)-200 | 200 | 360 | 2135 | 2275 | 2440 | 1.1 | 4.0 |
| SC(B)-250 | 250 | 415 | 2330 | 2485 | 2665 | 0.9 | 4.0 |
| SC(B)-315 | 315 | 510 | 2945 | 3125 | 3355 | 0.8 | 4.0 |
| SC(B)-400 | 400 | 570 | 3375 | 3590 | 3850 | 0.8 | 4.0 |
| SC(B)-500 | 500 | 670 | 4130 | 4390 | 4705 | 0.8 | 4.0 |
| SC(B)-630 | 630 | 775 | 4975 | 5290 | 5660 | 0.7 | 4.0 |
| SC(B)-630 | 630 | 750 | 5050 | 5365 | 5760 | 0.7 | 6.0–8.0 |
| SC(B)-800 | 800 | 875 | 5895 | 6715 | 6715 | 0.7 | 6.0–8.0 |
| SC(B)-1000 | 1000 | 1020 | 6885 | 7315 | 7885 | 0.7 | 6.0–8.0 |
| SC(B)-1250 | 1250 | 1205 | 8190 | 8720 | 9335 | 0.7 | 6.0–8.0 |
| SC(B)-1600 | 1600 | 1415 | 9945 | 10555 | 11320 | 0.7 | 6.0–8.0 |
| SC(B)-2000 | 2000 | 1760 | 12240 | 13005 | 14005 | 0.6 | 6.0–8.0 |
| SC(B)-2500 | 2500 | 2080 | 14535 | 15445 | 16605 | 0.6 | 6.0–8.0 |
Note: The above technical data is for reference only. Final parameters may vary according to design requirements, applicable standards, insulation class, ambient temperature and project conditions.
Product Features
Safe & Environmentally Friendly
The oil-free design eliminates oil leakage risks and reduces fire hazards, making it suitable for locations with high safety requirements.
Stable & Reliable Operation
The compact structure, moisture resistance, and high-temperature resistance ensure reliable operation in complex environments.
Low Maintenance
The dry type design does not require regular oil replacement, helping reduce maintenance costs and downtime.
Low Noise Design
Optimized core and winding structure effectively reduce operating noise, making it suitable for urban and public facilities.
Energy Saving & High Efficiency
High-quality silicon steel sheets and optimized design help reduce no-load loss and load loss.
Factory Test Items
| Test Item | Test Type |
|---|---|
| Insulation Resistance Test | Routine Test |
| Winding DC Resistance Test | Routine Test |
| Voltage Ratio Test | Routine Test |
| Vector Group Test | Routine Test |
| No-load Loss and No-load Current Test | Routine Test |
| Load Loss and Impedance Voltage Test | Routine Test |
| Power Frequency Withstand Voltage Test | Routine Test |
| Induced Withstand Voltage Test | Routine Test |
| Sealing Test | Routine Test |
Note: The sealing test is applicable to oil-immersed transformers only. Final test items may vary according to product type, applicable standards and project requirements.
Applications
Industrial Facilities
Reliable dry-type transformer solutions for factories, workshops, production lines and industrial power distribution systems.
Commercial Buildings
Safe and efficient power distribution equipment for office buildings, shopping malls and commercial complexes.
Public Facilities
Stable transformer support for hospitals, schools, metro systems, airports and municipal infrastructure projects.
Renewable Energy Projects
Power conversion and distribution solutions for solar power, wind power, energy storage and microgrid applications.
Why Choose DHDL Transformer
DHDL provides reliable transformer manufacturing, strict quality control, and project-based technical support for power distribution, industrial, commercial, and renewable energy applications.
Manufacturing Capability
- Oil immersed transformers
- Dry type transformers
- Pad mounted transformers
- Distribution transformers
- Power transformers
Quality Control
- Material inspection
- Winding and assembly control
- Drying and oil treatment process
- Routine testing
- Final inspection before delivery
International Standards
- IEC
- ANSI
- IEEE
- GB
- Project-specific technical requirements
Yes. Voltage, capacity, cooling method, enclosure, and technical standards can be customized according to project requirements.
Please provide capacity, voltage, phase, frequency, quantity, application, and destination country.
Yes. We support OEM cooperation, engineering project supply, and customized transformer solutions.
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