Eco-Friendly Dry-Type Transformer – China's Leading Suppliers and Factory for Leak-Free Electrical Solutions
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 100% humidity environments. 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 minimal energy loss, quiet operation, and efficient 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.
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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.
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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.
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 fire or oil-leak hazards, making it ideal for indoor, commercial, and environmentally sensitive installations.
Q What capacity range is available for your dry-type transformers?
Our standard range covers 50kVA to 2500kVA. Larger custom capacities are also available upon request to meet specific project requirements.
Q Can the dry-type transformer operate in high-humidity or harsh environments?
Yes. Thanks to the epoxy resin encapsulation, the transformer can operate reliably in environments with up to 100% relative humidity (non-condensing). It requires no pre-drying when resuming operations after a period of shutdown, making it highly suitable for humid and coastal climates.
Q What standards does this dry-type transformer comply with?
Our dry-type transformers are designed and manufactured in accordance with IEC 60076-11 standards. The no-load loss performance meets IEC Class 1 requirements, ensuring high energy efficiency and international compliance.
Q What overload capacity does the transformer support?
The transformer supports 120% of rated load for up to 2 hours (with temperature rise ≤140K) and 150% of rated load for up to 30 minutes, providing reliable performance during temporary peak demand situations.
Q Is the dry-type transformer suitable for outdoor installation?
The standard unit comes with IP20 protection, which is designed for indoor use. For outdoor or dusty environments, we offer customizable IP21 and IP30 protection levels to ensure reliable and safe operation in more demanding conditions.