dry-type air-insulated transformer
1. Higher energy efficiency: greater energy savings over long-term operation.
2. Safety and fire safety: Oil-free, made of epoxy resin, fireproof and explosion-proof, can be installed indoors/in switchboards.
3. Stability and reliability: high short-circuit resistance, small partial discharge, good insulation performance.
4. Low noise and quiet: Optimized iron core, low noise, suitable for residential areas and hospitals.
5. Weatherproof and maintenance-free: moisture-proof, dust-proof and anti-pollution, no need lubrication, longer service life.
I. Product Definition and Applicable Standards
TransformerThe dry alloy epoxy casting SCB is a three phase distribution transformerwith low losses andType 11 core. It offers significant improvements in no-load/load losses, insulation reliability, noise reduction and short-circuit resistance.
It uses an oil-free design that completely eliminates oil leaks, fires and explosions, making it ideal for facilities with strict environmental and fire protection requirements.
II. Key Technical Parameters (Configurable)
Element |
Standard Specification |
Notes |
Nominal lifting capacity |
50 kVA-8000 kVA |
50 kVA-8000 kVA |
Connection group |
Dyn11 (default) |
High voltage delta, low voltage star with neutral; meets grounding and protection requirements. |
Cooling mode |
AN (natural cooling) / AF (forced cooling) |
AN: 120% of rated load continuously AF: 150% rated load continuously |
III. Features of the design solution
Main system
Low voltage winding: high-precision copper foil; High voltage winding: oxygen-free copper conductor.
Vacuum casting epoxy resin with glass fiber reinforcement, no bubbles or voids, extremely high mechanical strength.
Uniform current distribution, low eddy current losses. Excellent resistance to short circuits and lightning impulses.
Temperature control and monitoring
Standard PT100 intelligent thermostat: overheat alarm, overheat protection, automatic fan control.
Sensors built into the windings provide accurate measurements.
Fencing and protection
Cold rolled steel with electrostatic spraying, optimized ventilation louvers.
IP30/IP40 protection rating with protection against rain and dust.
Disassemblable design for easy maintenance. Copper terminals with low contact resistance and reliable connection.
IV. Key Performance Benefits
Higher energy efficiency
Safer protection against fire and explosion.
Oil-free insulation class F, fire resistance FV0, no environmental pollution and toxic gases.
Can be installed directly in the energy consumption centers of buildings (high-rise buildings, hospitals, metro) without oil separator pits or fire partitions.
Greater adaptability to the environment
Completely sealed casting: moisture-, dust-, salt-fog-, anti-condensation.
Stable in coastal, chemically polluted and dusty environments.
Pre-drying is not required after a long period of inactivity.
High reliability and no need for maintenance
V. Typical areas of application
Power grids: 35 kV substations, reconstruction of urban/rural networks, step-down substations in industrial parks.
Public buildings: offices, shopping centers, airports, metro, hospitals, schools.
Hazardous industries: chemical parks, coal mines, oil refineries, pharmaceutical plants.
Coastal areas and areas with high humidity
New energy sources: small and medium solar/wind power plants.
