Eco-Friendly Dry-Type Transformer from China Suppliers - Safe, Efficient, and Oil-Leak Free Factory Solution
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 by 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 the 100% humidity environment. There is no need to dry it in advance when it resumes operations.
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⚡Low Loss & Low Noise Low loss, low noise and effective heat dissipation for efficient and quiet operation.
Product Display
Applications of Dry-Type Transformer
🏬
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.
🏭
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.
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 and solid insulation materials (such as epoxy resin with fiberglass) for cooling and insulation, rather than oil. This makes it safer for indoor and enclosed environments, as there is no risk of oil leakage or fire caused by flammable oil. It also requires significantly less maintenance compared to oil-filled transformers.
Q
What capacity range is available for your dry-type transformers?
Our standard dry-type transformers are available from 50kVA to 2500kVA. For projects requiring larger capacity, we also offer customized solutions. Please contact us with your specific requirements and we will provide a tailored proposal.
Q
Can the dry-type transformer operate in humid or outdoor environments?
Yes. Our dry-type transformers can operate in environments with up to 100% relative humidity (non-condensing). The standard protection level is IP20, and we offer IP21 and IP30 options for outdoor or dusty environments. No pre-drying is required when resuming operations after a period of inactivity.
Q
What insulation class and temperature resistance does the transformer use?
The transformer uses Class H insulation, which provides temperature resistance up to 180℃. The winding temperature rise limit is ≤125K and the iron core temperature rise limit is ≤80K under rated load conditions, ensuring safe and reliable long-term operation.
Q
What international standards does your dry-type transformer comply with?
Our dry-type transformers are designed and manufactured to comply with IEC 60076-11 (Class 1 for no-load loss performance). They also meet relevant national and international standards for electrical performance, insulation, and safety, making them suitable for global project applications.
Q
What is the overload capacity of the dry-type transformer?
The transformer supports an overload capacity of 120% of rated load for up to 2 hours (with temperature rise ≤140K), and 150% of rated load for up to 30 minutes. This makes it suitable for applications with intermittent peak demand, providing reliable performance even under temporary overload conditions.