China Electrical Power Transformer manufacturer

220KV Oil immersed transformer fully sealed oil immersed factory direct supply

Product Details:
Place of Origin: China
Model Number: Sf
Payment & Shipping Terms:
Minimum Order Quantity: 1
Price: 200-200000/piece
Packaging Details: wooden case
Delivery Time: 15 DAYS
Payment Terms: LC T/T
Supply Ability: 5000 pieces/year
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Detail Information

Usage: Power Product Name: Three Phase Oil Transformer
Frequency: 50Hz/60Hz Output Voltage: Customize
Color: Optional Application: Change Voltage
Place Of Origin: Qingdao,China
High Light:

oil immersed distribution transformer


oil immersed power transformer

Product Description

220KV oil-immersed transformer

                         220KV Oil immersed transformer  fully sealed oil immersed  factory direct supply 0

Product Features:

The 220kV oil immersed power transformer produced by our company is developed by ourselves on the basis of digesting and absorbing the advanced technology at home and abroad, aiming at the transformation of urban and rural power grids in China. Its product performance index is superior to the technical parameters and requirements of three-phase oil immersed power transformer (GB / t6451), which fully conforms to the requirements JB / y3837-1996 method for preparation of transformer product model, gb1094.1.2-1996, gb1094.3.5-2003 power transformer manufacturing standard and iec-76 recommended by International Electro-technical Commission. This product has the outstanding characteristics of low loss, low noise and no hanging core. It has special innovation in safety, reliability, economy, etc.


Technical data


Rated Capacity(kVA)




Tapping range of high voltag (%)

L.V. winding


Vector Group



Load Loss



current (%)

Short-circuit impedance









YNd11 28 128 0.56 12~14
40000 32 149 0.56
50000 39 179 0.52
63000 46 209 0.52



53 237 0.48
90000 61 273 0.44
120000 75 338 0.44




18 21

89 400 0.40
160000 93 420 0.39
180000 102 459 0.369
240000 128 538 0.33




151 641 0.3
360000 173 735 0.3
370000 176 750 0.3






1. core

High quality cold-rolled grain oriented silicon steel sheet is selected as the core, the full inclined pore free structure is adopted, and the low magnetic steel plate is used as the pull plate to firmly connect them upper and lower clamps with the core into a steel structure, so as to obtain less no-load loss and lower noise. The burr of silicon steel sheet shear port shall not be greater than 0.02mm. The no-load performance index is better than the national standard of China.


2 coil

According to the capacity of the transformer, the winding adopts cylinder, spiral, continuous and other structures. For the winding of 110kV UHV Transformer, the winding adopts tangle or inner screen structure, so as to effectively improve the distribution of impulse voltage. The conductor adopts  transposed conductor or composite conductor, so as to reduce the additional loss of the winding, and uses computer simulation to calculate the impact of electric field and winding The characteristics ensure the excellent electrical characteristics and impact strength of the winding, and the effective measures are adopted in the process to ensure its safe and reliable operation.


3 fuel tank

The oil tank adopts a flat top bell jar structure, and the box wall is welded with folded plate type reinforcing iron, which improves the mechanical strength of the oil tank. In order to reduce the stray loss of the transformer, the inner wall of the large transformer is equipped with a magnetic shield.





220KV Oil immersed transformer  fully sealed oil immersed  factory direct supply 1


·Service conditions

1. The maximum ambient air temperature shall not exceed 40 ℃, and the minimum shall not below - 25 ℃;

2. The altitude shall not exceed 1000m. If special customized transformers and low-voltage components are used, the altitude can reach 4000m;

3. The vertical inclination is no more than 5 °, and no violent vibration and impact;

4. The air humidity is not more than 90% (+ 25 ℃);

5. No gas and conductive dust that will seriously affect the insulation of transformer, no explosion hazard and corrosion of electrical components;

6. Outdoor wind speed shall not exceed 35m / s.

7. If service conditions beyond the above, specially customized product is available.



Order notice

1 clients need advise main parameters of the transformer like capacity, input voltage, output voltage and connection group in inquiry.

2 other custom requirement.



If any interest , pls feel free to contact us:


220KV Oil immersed transformer  fully sealed oil immersed  factory direct supply 2

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