I. Core Technical Features

1. Super Strong Resistance to Sudden Short Circuits
   To address the impact risk of power grid short-circuit faults, the coils adopt a "multi-layer dense winding + curing" process. High-strength insulating stays are filled between the windings to form a rigid integral structure; elastic fastening devices are used at the connection between the core and the oil tank, which can buffer the instantaneous electromagnetic force during short circuits. Tests show that the short-circuit impact resistance is improved by approximately 15%, and the post-fault repair rate is increased by 60%, significantly reducing the risk of power grid outages.
2. Excellent Short-term Overload Capacity
   The heat dissipation channels of the coils are innovatively optimized, and a combined design of "radial oil channels + axial heat dissipation" is adopted, increasing the heat dissipation area on the coil surface by 35%. At the same time, insulating paper with high thermal conductivity is selected to accelerate heat conduction. These improvements allow the transformer to operate continuously for 4 hours under 1.3 times the rated load and 1 hour under 1.5 times the load, while the hot-spot temperature rise is still controlled within the insulation tolerance range. It is particularly suitable for meeting the fluctuating electricity demand during peak hours in urban and rural areas.

II. Special Structural Design

1. High-strength Integral Plate Bending Oil Tank
   The oil tank is formed by one-time bending of a whole steel plate, replacing the traditional panel welding process. This reduces the number of welds by 90% and improves the overall compressive strength by 50%. The inner wall is treated with phosphating and then coated with an anti-corrosion coating, which enhances rust resistance and extends the service life to more than 10 years.
2. UV-resistant Flanged Structure of Tank Cover
   The edge of the tank cover is designed with a 90° inclined flange, forming a natural sunshade barrier that can block more than 80% of direct ultraviolet radiation from reaching the top gasket. The gasket is made of weather-resistant EPDM (Ethylene Propylene Diene Monomer) rubber. Combined with the physical protection of the flange, the aging rate of the gasket is reduced by 70%, effectively avoiding oil leakage caused by seal failure and lowering operation and maintenance costs.