Power Line Electrical 220kV Oil Immersed Power Transformer GB1094 IEC YNd11

Electrical 220kV Two-winding On-load-changing Oil Transformer for Industries

The 220KV transformer adopted the full folding plate tank structure of 110KV transformer, making its structure more rational, easier for site installation and inspection. Combining our many years of design and manufacture experiences, the reliability and performance of the product have reached international advanced level.

Through continuous improvement and alteration, our products are with characteristics of low loss, low noise, low partial discharge, high short circuit withstand capacity, high impedance, and fully-enclosed structure. The series covers two-winding and three-winding off-circuit tap changing power transformer, on-load tap changing transformer and tap-changing auto transformer. Main features as follows:

1.Electrical 220kV Two-winding On-load-changing Oil Transformer for Industries​ Features

1.1 Product standards

GB1094.1~2-2013

GB1094.3-2003

GB1094.5-2008

GB/T6451-2008

IEC60076

1.2 Low loss

Use high quality cold-rolled lattice orientation high permeability silicon steel, to reduce the load loss and no-load current.

1.3 Low partial discharge

To ensure the safe and steady operation of the transformer under continuous rated voltage, our Electric Power Research Institute conducted loads of research to develop a more reasonable insulation structure, plus the strict technology specifications and technical staff experience, ensured the low partial discharge of our products.

1.4 High strength

The tank can withstand the vacuum test and required positive pressure test.

2 Technology Features of  Electrical 220kV Two-winding On-load-changing Oil Transformer for Industries​

2.1 Transformer oil tank sealed structure adopted Tianan typical design, with strict control of sealing material and the compression coefficient of the sealing rings, a formal leakage test would be carried out after the completion of assembly process, so as to ensure the tank is leakage-free.

2.2 Use advanced kerosene vapor drying equipment to thoroughly dry the transformer, and the oil- pumping is carried out under complete vacuum condition, to ensure the insulation of insulators and oil, therefore greatly improved the safety and reliability of the product.

3. Parameter sheet of Electrical 220kV Two-winding On-load-changing Oil Transformer for Industries​