Energy-saving three-phase dry-type transformer
1. Higher energy efficiency: energy efficiency class 2, with lower losses than SCB13, saving more electricity during long-term operation.
2. Safety and fire resistance: epoxy casting without oil, fireproof and explosion-proof, can be installed in indoor distribution panels.
3. Stability and reliability: high short-circuit resistance, low partial discharge, and good insulation performance.
4. Ultra-low noise: optimized iron core, lower noise level, suitable for sensitive locations.
5. Weather resistance and maintenance-free: moisture-proof, dust-proof, pollution-resistant, no lubrication required, long service life.
Technical specifications of the 35 kV epoxy resin dry-type transformer.
I. Product Overview
The SCB 35 kV epoxy resin dry-type transformer is a high-performance, ultra-low loss, high-reliability upgraded model for the mass market of medium and high voltage distribution systems.
It features an oil-free design, vacuum epoxy casting and foil winding, as well as outstanding performance in fire resistance, explosion protection, moisture resistance, dust resistance, short-circuit withstand capability, and requires no maintenance.
It is widely used in power grids, industrial and mining enterprises, data centers, airports, subways, hospitals, chemical plants, power stations, and other locations with strict requirements for safety and energy efficiency.
II. Key Technical Parameters (Customizable)
Rated voltage: 35 kV (tap range ±2×2.5%) / 0.4 kV
Rated power: 50 kVA-63000 kVA
Connection group: Dyn11 (standard)
Insulation class: Class F (155℃)
Cooling modes: AN (natural cooling) / AF (forced air cooling)
III. Structural and technological features
Main component – Ultra-low loss and ultra-low noise level
High-permeability grain-oriented silicon steel, thickness 0.27 mm.
Multi-step stepped joint to create a uniform magnetic circuit, reducing magnetic resistance and vibration.
Full epoxy coating for protection against moisture, rust, and corrosion.
High-strength non-magnetic fastening ensures a rigid structure, preventing loosening or extraneous noise during transportation and operation.
Winding – high strength, high insulation, high short-circuit resistance.
Low-voltage foil winding: made of oxygen-free copper foil, ensuring uniform current distribution and low eddy current losses.
High-voltage multi-layer cylindrical winding: balanced ampere-turns, excellent short-circuit withstand capability.
Vacuum epoxy casting with fiberglass reinforcement: bubble-free, void-free, no weak points.
High insulation strength, impact resistance, moisture resistance, pollution resistance, no cracking.
Flame retardant class FV0: smokeless, non-toxic, self-extinguishing.
IV. Typical Application Areas
Power grid systems: 35 kV substations, urban distribution networks, step-down substations in industrial parks, energy-saving renovation.
Premium public buildings: airports, subways, high-speed railway stations, hospitals, schools, shopping malls, office buildings, high-rise buildings.
Data centers and new energy sources: data centers, cloud computing centers, photovoltaic power stations, wind farm collector stations, energy storage systems.
Hazardous industrial environments: chemical, petroleum, coal, pharmaceutical, metallurgical enterprises, as well as facilities handling flammable and explosive substances.
Harsh environmental conditions: coastal areas with high salt spray, high humidity, severe air pollution, plateaus, and low-temperature regions.
