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Dry-type Distribution Transformers
Dry-type Distribution Transformers are intended for indoor electrical distribution where an oil-free transformer configuration is preferred. Winding insulation, enclosure/IP level, cooling, temperature rise, acoustic limits and voltage ratio are selected to suit the installation and approved design.
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- Overview
- Recommended Products
General Product Overview：
Our dry-type distribution transformers are engineered for maximum safety, reliability, and environmental friendliness. Unlike oil-filled units, these transformers use advanced epoxy resin vacuum casting or vacuum pressure impregnation (VPI) technology for insulation, eliminating the risk of fire or oil leakage. This makes them the ideal choice for indoor environments, high-rise buildings, and underground facilities where fire safety is paramount. They are virtually maintenance-free, moisture-proof, and can be installed close to the load center to reduce cable costs and energy transmission loss.
Features：
● Maintenance-free with high moisture resistance.
● Compact design for indoor installation.
● Harmonic Capability: Rated for K-Factor (K4, K13, K20) to handle non-linear loads in AI Data Centers.
● Partial Discharge: < 10pC (Picocoulomb), ensuring long-term insulation reliability and zero-arc risk.
● High quality and competitive price： Total cost of ownership (TCO) optimized via 98.5% peak efficiency.
Main Technical Specifications：
| Item | Specification |
|---|---|
| Rated Capacity | 50kVA - 3150kVA (or higher upon request) |
| Rated Voltage | Up to 35kV |
| Frequency | 50Hz / 60Hz |
| Insulation Class | Class F (155°C) or Class H (180°C) |
| Cooling Type | AN (Natural Air) / AF (Forced Air) |
| Enclosure Protection | IP00, IP20, IP23 (Customizable) |
| Partial Discharge | ≤ 10pC (Excellent insulation integrity) |
| Standards Compliance | IEC 60076-11, ANSI/IEEE C57.12.01 |
Core Technology: Silicon Steel vs. Amorphous Alloy
We offer high-performance core options to suit your efficiency goals:
A. Silicon Steel (CRGO) Core (SCB10/11/13/14)
Features: High mechanical strength and excellent cost-to-performance ratio.
Insulation Class: Class F (155°C) or Class H (180°C) with epoxy resin vacuum casting.
Safety Ratings: F1 (Fire Resistant), E2 (Environmental), C2 (Climatic) according to IEC 60076-11.
Application: Widely used in standard commercial and residential power distribution.
B. Amorphous Alloy Core (SCH15/17/19)
Features: Utilizes ultra-low loss amorphous metal to minimize core loss.
Performance: Reduces no-load losses by up to 75% compared to traditional dry-type units.
Insulation Class: Class H (180°C) - Enhanced thermal stability for peak loads.
ROI Advantage: Estimated payback period of 18-24 months through electricity savings in 24/7 operating environments.
Recommendation: Ideal for green buildings, data centers, and LEED-certified projects requiring extreme energy efficiency.
Main Applications：
✅Airports, Subways & Rail Transit
✅Hospitals, Schools & Residential Complexes
✅Data Centers & Telecommunication Hubs
✅ Enclosure Material: High-strength Al-Zn alloy plate or stainless steel.
✅ Protection Grade: IP54 (Outdoor) / IP43 (Standard) to prevent dust and water ingress.
✅ Corrosion Resistance: Passed 1000h Salt Spray Test, suitable for coastal and high-humidity industrial environments.
✅ Feed Mode: Loop Feed or Radial Feed options available for US-style Pad-mounted configurations.
✅ Engineering Support: Download typical CAD (.dwg) and PDF outline drawings for your project design.
