The windings are made of oxygen-free copper , so the load loss of is lower and the electric performance is better.
The three-limb iron core is made of oblique cut Grain-oriented, seven-step silicon steel laminations insulated on both sides, guaranteeing low losses and low noise. These values are even improved by laser treatment. It is protected on the surface with a flash-proof varnish in order to prevent the sheet from corrosion and to reduce the noise.
The transformer is fully sealed, which ensures the stability of oil quality, extends the service life, maintenance. At the same time, the tank composed of corrugated radiator adopts phosphating and multi-layer anti-rust spraying technology to produce, which has good weather resistance.
|Transformer type||Oil-immered type|
|Phases||Thres phases or single phases|
|Capacity||30 - 31500kva (customization is available)|
|Voltage||up to 36kv|
|Oil preservation||Hermetically Sealed/ Conservator/ Free Breathing|
|Tap changer||off-load or on-load|
|Winding material||Aluminum/ Copper|
|Coolers||corrugated wall or radiator|
|Cooling mode||ONAN /ONAF|
|Dielectric liquids||Mineral oil / Dimethyl Silicone/ Vegetable Oil|
|impedance||4% to 8%|
|Losses||according to customers requirements|
|Vector groups||Dyn11, Yyn11 (according to customers requirements)|
Varelen Electric Co., Ltd