Eco-Friendly Dry-Type Transformer from China Suppliers - Safe, Efficient, and Leak-Free Power Solution from Factory
Product Specification
| Basic Specifications | |
| Rated Capacity | 50kVA - 2500kVA (customizable for larger capacity) |
| Rated Voltage | High voltage (HV): 6kV / 10kV / 35kV; Low voltage (LV): 0.4kV (380V/220V) |
| Frequency | 50Hz / 60Hz (dual-frequency optional) |
| Phase | Three-phase |
| Connection Group | Dyn11 (standard); Yyn0 / Dd0 (optional) |
| Electrical Performance | |
| No-Load Loss | ≤180W (50kVA) - ≤2200W (2500kVA) (meets IEC 60076-11 Class 1) |
| Load Loss (at 1.0 rated current, 75℃) | ≤850W (50kVA) - ≤12500W (2500kVA) |
| No-Load Current | ≤2.5% (50kVA) - ≤1.0% (2500kVA) |
| Short-Circuit Impedance | 4% (50kVA-1000kVA); 6% (1250kVA-2500kVA) (tolerance: ±10%) |
| Insulation Resistance (25℃) | HV-LV & Earth ≥300MΩ; LV-Earth ≥100MΩ |
| Temperature Rise & Heat Dissipation | |
| Temperature Rise Limit (rated load) | Winding (Class H insulation) ≤125K; Iron Core ≤80K |
| Cooling Method | AN (Air Natural) / AF (Air Forced, optional for ≥1000kVA) |
| Overload Capacity | 120% rated load for 2 hours (temperature rise ≤140K); 150% rated load for 30 minutes |
| Insulation & Protection | |
| Insulation Class | H (temperature resistance up to 180℃) |
| Withstand Voltage (1min, 50Hz) | HV side: 35kV (for 10kV rated voltage); LV side: 6kV |
| Protection Level | IP20 (standard); IP21 / IP30 (customizable for outdoor/dusty environments) |
| Structure & Environment | |
| Noise Level | ≤55dB (at 1m distance, 50kVA) - ≤65dB (2500kVA) |
| Weight | ~380kg (50kVA) - ~3200kg (2500kVA) |
| Dimension (L×W×H) | 1200×800×1300mm (50kVA) - 2800×1600×2500mm (2500kVA) |
| Working Environment | Temperature -25℃~+40℃; Humidity ≤90% (non-condensing); Altitude ≤1000m (derating required above 1000m) |
Advantages
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🔥Fireproof Epoxy resin with fiberglass has features with flame retardant and easy to extinguish.
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💰Economical It could be installed near the load center to reduce cost and circuit energy consumption.
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🔧Maintenance-Free & Non-Pollution There is no oil in the transformer — no need to maintain. It could save a lot of maintenance time and cost.
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💧Moisture-Proof It could work in a 100% humidity environment. No need to dry it in advance when it resumes operations.
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📉Low Loss, Low Noise & Effective Heat Dissipation Optimized design ensures efficient energy transfer with minimal sound and superior thermal management.
Product Display
Applications of Dry-Type Transformer
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Indoor Commercial Spaces
Ideal for shopping malls, office towers, and hotels — its oil-free, flame-retardant design eliminates fire/leak risks in enclosed areas, powering HVAC systems, elevators, lighting, and commercial appliances while operating quietly to avoid disrupting public environments.
🖥️
Data Centers & Telecom Facilities
Critical for powering servers and network equipment, as its stable voltage output prevents data loss from fluctuations. Its dust-proof and high-temperature-resistant features suit the controlled, high-density electrical environments of data hubs.
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Industrial Workshops
Used in electronics, machinery, and food processing plants — where oil-based transformers pose contamination risks. It withstands industrial dust and moderate heat, supporting continuous operation of production lines with low maintenance needs.
♻️
Renewable Energy & Urban Grids
Integrated with solar/wind energy storage systems to convert and distribute clean power. Also deployed in residential neighborhoods and urban medium-low voltage grids, ensuring safe, efficient electricity supply for households without environmental hazards.
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Frequently Asked Questions
Q
What is a dry-type transformer and how does it differ from an oil-filled transformer?
A dry-type transformer uses air as its cooling medium and encapsulates its windings in epoxy resin, eliminating the need for insulating oil. Unlike oil-filled transformers, it poses no risk of oil leakage or fire from flammable liquid, making it safer and more suitable for indoor, commercial, and sensitive environments.
Q
What capacity range is available for this dry-type transformer?
The standard capacity range is 50kVA to 2500kVA. Larger capacities can be customized based on specific project requirements. Both 50Hz and 60Hz frequencies are supported, making it suitable for global applications.
Q
What are the cooling options available for this transformer?
The transformer supports AN (Air Natural) cooling as standard. For units rated at 1000kVA and above, AF (Air Forced) cooling with fans can be optionally added to enhance heat dissipation and support higher load demands.
Q
Can this dry-type transformer be used in outdoor or high-humidity environments?
Yes. The transformer can operate in environments with up to 100% humidity without requiring pre-drying when resuming operations. For outdoor or dusty environments, the protection level can be upgraded to IP21 or IP30. The working temperature range is -25℃ to +40℃, with derating required at altitudes above 1000m.
Q
How much overload capacity does this transformer support?
The transformer can handle 120% of rated load for up to 2 hours (with temperature rise ≤140K) and 150% of rated load for up to 30 minutes. This overload capability makes it reliable for applications with peak demand fluctuations.
Q
What maintenance is required for a dry-type transformer?
Dry-type transformers are essentially maintenance-free. Since there is no oil to monitor or replace, routine maintenance is minimal — typically limited to periodic visual inspection and cleaning of ventilation areas. This significantly reduces long-term operating costs compared to oil-filled units.