dry distribution transformer
Advantages of 10kV Dry-Type Transformer Products:
• Oil-free design with flame-retardant, fireproof, and explosion-proof properties for high safety ratings
• Moisture and dust resistance coupled with strong short-circuit protection for stable operation
• Low energy loss, minimal noise, and high efficiency for energy conservation
• Maintenance-free, pollution-free, and environmentally friendly
• Direct installation in load centers, indoor spaces, and basements
• Compact size requiring minimal floor space with flexible installation options
• Ideal for crowded environments including shopping malls, hospitals, schools, data centers, subways, and industrial facilities
1.Product Overview
The 10kV-class resin-cast dry-type transformer serves as the core power conversion equipment in modern distribution networks. Widely used for voltage reduction from 10kV to 0.4kV, it provides stable and reliable power supply for office buildings, shopping malls, hospitals, factories, and rail transit systems. Manufactured using epoxy resin vacuum casting technology, this transformer features oil-free operation, flame retardancy, explosion-proof design, low noise levels, and maintenance-free operation, making it an ideal choice for indoor high-density areas and environments requiring stringent safety standards.
The product is designed and manufactured in strict compliance with national standards such as GB/T 1094.11 and GB/T 10228, featuring a mature structure and reliable operation. It serves as a standard equipment for industrial buildings, commercial complexes, municipal infrastructure, and new energy projects.
2. Core Technical Parameters Parameter （customizable）
| Indicator Rated Voltage | High Voltage: 10kV (±2×2.5%); Low Voltage: 0.4kV Rated Capacity | 30kVA to 2500kVA Rated Frequency | 50Hz Connection Group | Dyn11/Yyn0 Insulation Class | F-grade windings (tested under B-grade temperature rise criteria) Temperature Rise Limit | Windings ≤80K (B-grade) Short-circuit Impedance | 4%–6% (customizable) Local Discharge Capacity | ≤10pC Noise Level | ≤55dB (1m distance from equipment) Protection Rating | IP20–IP54 (indoor/outdoor selectable) Operating Environment | Temperature: -25℃ to +55℃; Humidity: ≤95% (no condensation)
3. Key Features
1. Safety and Fire Resistance | Flame-retardant epoxy resin casting ensures non-combustion, non-spreading, and zero toxic gas emission. Features natural explosion-proof, dustproof, and electric shock protection capabilities, making it the preferred safety solution for crowded spaces such as shopping malls, hospitals, and schools.
Low energy loss: The three-tier energy efficiency rating ensures superior energy conservation through the use of high-quality oriented silicon steel core sheets and highly conductive copper foil windings. Compared to traditional products, no-load losses are reduced by approximately 20%–30%, while load losses are further decreased by over 10%, meeting national third-tier energy efficiency standards. Long-term operation results in significant electricity cost savings.
Strong short-circuit resistance and stable operation: The coil adopts a foil structure combined with epoxy resin integral casting, ensuring high mechanical strength to withstand high-current short-circuit impacts, effectively preventing coil deformation and burnout failures. The equipment lifespan can exceed 30 years.
Low noise and environmental friendliness: By optimizing the iron core structure, implementing noise reduction design, and employing advanced winding processes, the noise level can be controlled at ≤55dB, making it suitable for installation in indoor environments, office buildings, and residential areas with high acoustic requirements.
Moisture and dust resistance with long maintenance-free cycle: Featuring a fully sealed cast structure, it operates stably in harsh environments such as high humidity, salt spray, and dusty conditions without requiring oiling, oil replacement, or oil filtration, resulting in virtually maintenance-free operation and extremely low subsequent O&M costs.
Flexible installation with compact footprint, lightweight design, and space-efficient structure, allowing direct installation at load centers, basements, distribution rooms, and outdoor transformer substations without requiring large civil engineering foundations. The installation process is convenient and offers high spatial utilization efficiency.
4. Application Scenarios
1. Commercial and Civil Buildings Office buildings, shopping malls, hotels, residential complexes, high-rise residences, underground garages, schools, hospitals.
Key requirements: safety, quiet operation, energy efficiency, and maintenance-free operation.
Industrial production sectors including factory workshops, industrial parks, metallurgy, chemical industry, electronic manufacturing, and food processing.
Key requirements: short-circuit resistance, high reliability, moisture resistance, and continuous power supply.
Public infrastructure: subway stations, high-speed railway stations, airports, tunnels, parking lots, municipal roads, and stadiums.
Key requirements: low noise, dustproof, high protection, stable and durable.
New energy and special-scenario data centers, photovoltaic/wind power supporting systems, charging stations, coastal high-salt-fog areas, and temporary construction power supply.
Key requirements: moisture resistance, corrosion resistance, energy efficiency, and flexible scalability.
