An Egyptian transformer assembly factory ordered a batch of 1600 kVA corrugated transformer tanks for oil-immersed distribution transformers.
The tanks were designed for 11/0.4 kV, 3-phase, 50 Hz transformer applications and supplied as complete corrugated tank assemblies for local transformer manufacturing.
The project focused on tank dimensions, corrugated panel structure, oil tightness, welding quality, mounting interfaces and corrosion protection.
| Parameter | Specification |
|---|---|
| Transformer Rating | 1600 kVA |
| Transformer Type | Oil-Immersed Transformer |
| Rated Voltage | 11/0.4 kV |
| Phase | 3 Phase |
| Frequency | 50 Hz |
| Cooling | ONAN |
| Tank Type | Corrugated Transformer Tank |
| Tank Structure | Hermetically Sealed / Customized |
| Corrugated Panel Height | 1,200 mm* |
| Corrugated Fin Depth | 300 mm* |
| Fin Pitch | 45 mm* |
| Fin Sheet Thickness | 1.2 mm* |
| Tank Material | Weldable Carbon Steel |
| Tank Plate Thickness | According to Approved Drawing |
| Tank Cover | Customized |
| HV/LV Cable Entries | According to Transformer Design |
| Oil Filling Connection | Customized |
| Drain Valve Connection | Customized |
| Lifting Lugs | Included |
| Earthing Point | Included |
| Welding | Qualified Welding Process |
| Oil Tightness | Leakage / Pressure Test |
| Surface Treatment | Anti-Corrosion Coating |
| Standard Basis | IEC 60076 Series |
| Manufacturing | OEM / Customized |
*Reference dimensions; final dimensions depend on the approved transformer GA drawing and engineering calculation.
The corrugated transformer tank integrates the oil enclosure and cooling structure into one steel tank.
The corrugated walls increase the external heat-transfer surface while allowing the tank to accommodate oil expansion caused by temperature changes.
For this 1600 kVA transformer tank, the reference configuration uses:
The final number, width and arrangement of corrugations are determined according to the transformer dimensions and required cooling performance.
For an Egyptian transformer assembly factory, dimensional compatibility was a key purchasing requirement.
The transformer tank was manufactured according to the customer’s approved drawing, including:
This allows the 1600 kVA transformer tank to be directly integrated into the customer’s transformer assembly process.
The tank body, cover and corrugated panels were manufactured using controlled welding processes.
Quality inspection focused on:
Before shipment, the corrugated transformer tank was subjected to oil-tightness / leakage inspection to ensure reliable operation after transformer assembly.
Because transformers may be installed outdoors in hot and dusty environments, corrosion protection was included in the tank manufacturing process.
The surface treatment can include:
Surface cleaning → primer coating → finishing coating → coating inspection
The final coating system can be customized according to the customer’s environmental requirements.
The 1600 kVA corrugated transformer tanks were manufactured according to the Egyptian customer’s transformer assembly requirements.
The project provided a customized tank solution with accurate dimensions, corrugated cooling structure, reliable welded construction and tested oil tightness.
For transformer manufacturers, the correct tank dimensions, corrugation parameters and connection interfaces are essential for efficient transformer assembly.
