Custom Eco-Friendly Dry-Type Transformer from China Suppliers - Safe, Efficient, and Oil-Leak Free Factory Solution Manufacturers, Factory

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Custom Eco-Friendly Dry-Type Transformer from China Suppliers - Safe, Efficient, and Oil-Leak Free Factory Solution Manufacturers, Factory

This oil-free dry-type transformer, produced by leading China suppliers, prioritizes safety with its flame-retardant insulation, effectively eliminating the risk of oil leaksâ€”making it ideal for indoor applications. Designed for high efficiency and low power loss, it guarantees stable voltage output across various scenarios. Its dust-proof and high-temperature-resistant features ensure minimal maintenance and quiet operation. Compact and space-saving, this transformer is perfect for use in commercial buildings, data centers, and industrial workshops. Manufactured in our state-of-the-art factory, it aligns with green energy standards, providing reliable and eco-friendly power distribution

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Product Description

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

🔥

Fireproof Epoxy resin with fiberglass has features with flame retardant and easy to extinguish.
💰

Economical It could be installed near by the load center to reduce cost and circuit energy consumption.
🔧

Maintenance-Free There is no oil in the transformer, no need to maintain. It saves maintenance time and cost.
💧

Moisture-Proof It could work in 100% humidity environments. No need to dry before resuming operations.
⚡

Low Loss & Noise Effective heat dissipation for efficient, quiet, and low-energy operation.

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Applications

🏢

Indoor Commercial Spaces

Ideal for shopping malls, office towers, and hotels—its oil-free, flame-retardant design eliminates fire risks in enclosed areas, powering HVAC systems and elevators quietly.

🖥️

Data Centers & Telecom

Critical for servers and network equipment. Stable voltage output prevents data loss, while dust-proof features suit controlled high-density electrical environments.

🏭

Industrial Workshops

Used in electronics and food processing plants where oil contamination is a risk. Supports continuous operation of production lines with low maintenance.

🌱

Renewable Energy

Integrated with solar/wind energy systems. Deployed in residential grids to ensure safe, efficient electricity supply without environmental hazards.

Frequently Asked Questions

QWhat is a dry-type transformer and how does it differ from oil-filled?

A dry-type transformer uses air and solid insulation (epoxy resin) instead of oil. This makes it safer for indoor use by eliminating oil leakage and fire risks, while requiring significantly less maintenance.

QWhat capacity range is available?

Standard capacities range from 50kVA to 2500kVA. For larger projects, we offer customized solutions to meet specific electrical requirements.

QCan it operate in humid or outdoor environments?

Yes, they operate in up to 100% relative humidity. Standard protection is IP20, but IP21 and IP30 options are available for outdoor or dusty environments.

QWhat insulation class is used?

We use Class H insulation, which withstands temperatures up to 180℃. Winding temperature rise is limited to ≤125K, ensuring long-term reliability.

QWhat international standards are followed?

Our transformers comply with IEC 60076-11 (Class 1) and relevant global standards for insulation, safety, and electrical performance.

QWhat is the overload capacity?

It supports an overload of 120% for 2 hours and 150% for 30 minutes, making it ideal for peak demand handling.

Product Detail

Custom Eco-Friendly Dry-Type Transformer from China Suppliers - Safe, Efficient, and Oil-Leak Free Factory Solution Manufacturers, Factory

Product Description

Product Specification

Advantages

Product Display