Project Location: Russia
Product: Power Transformer Tank
Transformer Rating: 260 MVA
Voltage: 220 kV
Application: High-Voltage Power Grid Project
Project Status: Factory Testing Completed and Shipped
A high-voltage power project in Russia required a customized transformer tank for a 260MVA, 220kV power transformer.
As one of the main structural components of a large power transformer, the transformer tank needs to provide sufficient mechanical strength, dimensional accuracy and oil-tight performance while accommodating the transformer core and winding assembly.
For this project, the customer required a transformer tank manufactured according to the approved technical drawings and project specifications.
The tank also needed to meet the requirements for factory inspection, safe transportation and installation at the project site in Russia.
After production and final inspection, the 260MVA, 220kV transformer tank successfully passed the required testing and was prepared for shipment to Russia.
For a large-capacity 220kV transformer, the tank structure needs to meet demanding requirements in several areas.
A 260MVA transformer requires a large and robust tank structure capable of accommodating the transformer active part and associated components.
The tank must maintain sufficient structural strength during assembly, operation, lifting and transportation.
The tank needs to match the transformer design and the installation positions of various accessories.
Critical dimensions include:
Accurate dimensions help reduce installation problems during transformer assembly.
The transformer tank contains insulating oil during operation.
Reliable sealing and welding are therefore essential to minimize the risk of oil leakage.
Particular attention is required at welded joints, flanges, covers and accessory interfaces.
The tank needs to withstand the mechanical loads generated during:
Reinforcement structures and lifting components therefore need to be designed according to the approved engineering drawings.
Based on the customer’s technical drawings and project requirements, we provided a customized 260MVA / 220kV transformer tank solution.
The tank structure was designed to accommodate the transformer’s active part while providing the required interfaces for external transformer components.
The solution focused on four key areas:
Structural Strength
The tank structure was designed with appropriate reinforcement to support the large transformer assembly and transportation loads.
Dimensional Accuracy
Key interfaces were manufactured according to the approved drawings to ensure compatibility with the transformer active part and external accessories.
Oil-Tight Construction
Welded joints, flanges and connection areas were carefully controlled to help ensure reliable oil containment.
Transportation Readiness
Lifting points and structural components were considered for safe handling and transportation to the Russian project site.
The transformer tank can be customized according to the transformer’s technical drawings and customer requirements.
Typical interfaces and components include:
The final configuration depends on the transformer design and approved project drawings.
This customized approach allows the tank to be integrated with the transformer’s active part and external accessories during final transformer assembly.
For a large-capacity 220kV transformer tank, quality control is critical to long-term transformer reliability.
Our inspection process focuses on the tank’s dimensions, welding quality, structural integrity, oil tightness and surface condition.
Critical dimensions are checked against the approved technical drawings.
Inspection areas may include:
Dimensional accuracy helps ensure smooth integration during transformer assembly.
Welding is one of the most important processes in transformer tank manufacturing.
The tank contains multiple welded structures and oil-containing areas.
Welded joints are inspected according to the project quality requirements to identify potential surface defects and ensure structural integrity.
Particular attention is given to:
Oil-tightness is an essential requirement for a transformer tank.
The completed tank undergoes leak testing according to the applicable project requirements.
The inspection focuses on potential leakage points, including:
The specific test method, pressure and holding time are determined according to the approved project specification.
The tank surface is inspected before shipment to ensure that the required surface treatment and protective coating are properly completed.
Inspection may include:
The coating system can be customized according to the project environment and customer requirements.
Before shipment, the 260MVA / 220kV transformer tank successfully completed the required factory inspections and testing.
The final inspection confirmed the key manufacturing requirements of the tank before it was released for transportation.
The inspection process provided the customer with greater confidence in:
After completing the required quality checks, the transformer tank was approved for shipment to Russia.
A transformer tank of this size requires careful preparation before international transportation.
The transportation preparation focused on protecting the tank structure and critical interfaces.
Important flange and connection surfaces were protected to reduce the risk of impact and surface damage during transportation.
The tank was prepared according to the designated lifting and transportation points.
Suitable fixation helps reduce unnecessary movement during handling and transportation.
Exposed surfaces were protected against scratches, moisture and other transportation-related damage.
Packaging and loading arrangements were prepared according to the transportation method and project requirements.
After completing inspection and transportation preparation, the 260MVA / 220kV transformer tank was successfully shipped to Russia.
The delivery marked the completion of the manufacturing and factory quality-control stage of the project.
For large power transformer projects, reliable delivery is important because delays in key components can affect transformer assembly and overall project schedules.
Our supply process therefore focuses not only on product quality but also on:
This project demonstrates our capability to provide customized transformer tank solutions for large-capacity and high-voltage transformer applications.
The transformer tank was designed for a 260MVA power transformer, requiring a robust structural configuration.
The tank was developed for a 220kV transformer project, with multiple precision interfaces for high-voltage transformer components.
Tank dimensions, connection interfaces, reinforcement structures and lifting components can be customized according to customer drawings.
Dimensional inspection, welding inspection, leak testing and surface inspection help ensure the tank meets project requirements before shipment.
The completed tank was safely prepared and shipped to Russia according to the project schedule.
For large power transformer projects, the transformer tank is not simply a steel enclosure. It is an engineered structural component that directly affects transformer assembly, oil containment, transportation and long-term operation.
Our transformer tank solutions provide:
Customized Dimensions
Manufactured according to transformer drawings and project specifications.
Reliable Welding
Controlled welding processes support structural integrity and oil-tight performance.
Accurate Interfaces
Flanges, pipe connections, lifting points and accessory interfaces are manufactured according to approved drawings.
Quality Inspection
Critical dimensions, welding, leakage and surface protection are inspected before shipment.
International Supply
Transformer tanks can be prepared for export transportation and delivered to international project sites.
The 260MVA, 220kV transformer tank for the Russian project successfully completed factory testing and was shipped for project delivery.
The project required a combination of large-scale structural strength, dimensional accuracy, reliable oil-tightness, precise accessory interfaces and transportation readiness.
Through customized engineering, quality inspection and coordinated international delivery, we provided a transformer tank solution suitable for a large-capacity high-voltage power transformer.
Looking for a customized transformer tank for a 220kV or high-capacity power transformer? Send us your technical drawings and project requirements for a customized quotation.
