dry-type air-insulated transformer
1. Enhanced energy efficiency: greater energy savings during long-term operation.
2. Safety and fire protection: oil-free, made of epoxy resin, fireproof and explosion-proof, can be installed indoors/in distribution panels.
3. Stability and reliability: high short-circuit resistance, low partial discharge, good insulation performance.
4. Low noise and quiet operation: optimized iron core, low noise level, suitable for residential areas and hospitals.
5. Weather resistance and maintenance-free: moisture-proof, dust-proof, and pollution-resistant, no lubrication required, longer service life.
I. Product Definition and Applicable Standards
TransformerSCB epoxy cast dry-type alloy transformer is a three-phase distribution transformerwith low losses anda type 11 core. It offers significant improvements in no-load/load losses, insulation reliability, noise reduction, and short-circuit resistance.
It adopts an oil-free design that completely eliminates oil leaks, fires, and explosions, making it ideal for facilities with strict environmental protection and fire safety requirements.
II. Key Technical Parameters (Customizable)
Element |
Standard Specification |
Notes |
Rated capacity |
50 kVA-8000 kVA |
50 kVA-8000 kVA |
Connection Group |
Dyn11 (default) |
High-voltage delta connection, low-voltage star connection with neutral; meets grounding and protection requirements. |
Cooling Mode |
AN (natural cooling) / AF (forced cooling) |
AN: 120% rated load continuously AF: 150% rated load continuously |
III. Design Features
Main system
Low-voltage winding: high-precision copper foil; high-voltage winding: oxygen-free copper conductor.
Vacuum epoxy casting with fiberglass reinforcement, free of bubbles and voids, extremely high mechanical strength.
Uniform current distribution, low eddy current losses. Excellent short-circuit and lightning impulse withstand capability.
Temperature control and monitoring
Standard intelligent PT100 thermostat: overheat alarm, overheat protection, automatic fan control.
Sensors embedded in the windings ensure accurate measurements.
Enclosure and protection
Electrostatically sprayed cold-rolled steel, optimized ventilation louvers.
IP30/IP40 protection rating with rain and dust protection.
Collapsible design for easy maintenance. Copper terminals with low contact resistance and reliable connection.
IV. Key performance advantages
Higher energy saving
Safer fire and explosion protection.
Oil-free Class F insulation, FV0 flame retardancy, no environmental pollution or toxic gases.
Can be installed directly in building power consumption centers (high-rise buildings, hospitals, subways) without oil separation pits or fire barriers.
Higher environmental adaptability
Fully sealed casting: moisture-proof, dust-proof, salt-spray resistant, anti-condensation.
Stable in coastal, chemically polluted, and dusty environments.
No pre-drying required after prolonged shutdown.
High reliability and maintenance-free.
V. Typical Application Areas
Power grids: 35 kV substations, reconstruction of urban/rural networks, step-down substations in industrial parks.
Public buildings: offices, shopping malls, airports, subways, hospitals, schools.
Hazardous industries: chemical parks, coal mines, oil refineries, pharmaceutical plants.
Coastal areas and high-humidity regions
New energy sources: small and medium-sized solar/wind power stations.
