China Electrical Power Transformer manufacturer

three phase 5000kva oil immersed electric transformer 11kv to 440v

Product Details:
Place of Origin: China
Model Number: S11
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

Product Description

oil-immersed transformer S11,30-2500KVA,10KV series,3 phae/full sealed/double winding


three phase 5000kva oil immersed electric transformer 11kv to 440v 0


The transformer is a transformer whose interior is isolated from the air surrounding, so the transformer oil can not absorb the outer moisture and the oxygen since the change of transformer's volume could be fixed with the flexibility of corrugated tank structure. Then the aging speed of insulated material will be decreased. Before running the machine, the work of core suspension checkup is not necessary. Clients could also be free from the later maintenance and reparation. The reliability of products is visibly upgraded. Products is designed with PCCAD, the characters are conformed to IEC 60076 and GB 1094, and passed qualification ISO 9001.




The product is in accordance with National Standards GB 1094-1966and GB/T6451-2008 (Technical and specification for 3 phrase oil immersed transformer.)

S9 series transformer is made from copper winding,adopting the technology,new materials,the load loss and no load loss less than the before.


Main Feature

1. Energy Saving
The no-load loss of S9 series reduce 10.3%,the no loadcurrent reduce 22.4%.
2. Long Service Life
Adopts full-sealed power constituting for oil tank of transformer,the oil tank is welded firmly make the oil separate from air,prolong the machine work time.
3. High Running Reliablity

4.Small Floor-Space
S9-M series transformer adopts the fin plate of the currugating oil tank as their cooling compoments.It is not only beautiful but small.


Oxygen-free copper lines of lower resistivity, which will become smoother and burr-free after series of additional surface treatment, so the load loss of our transformer is lower and the electric performance is better.
High-quality silicon-steel plates which are of lower unit loss, and the no-load of the transformers is lower.
High-quality wooden laminating insulation pieces, which won’t split or move even under the influence of short circuit.
Thoroughly filtrated transformer oil containing less water, gas and impurities, which makes our transformers work better.
High-quality rubber sealing material, which can prevent the transformers form aging or leakage.


·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.




three phase 5000kva oil immersed electric transformer 11kv to 440v 1

three phase 5000kva oil immersed electric transformer 11kv to 440v 2



1.The payment term: We accept TT,30% deposit and 70% balance against copy of BL.
2.The delivery time: Usually it will take about 15-20 days.
3.The standard of package: Usually use strong plywood case for protection.
4.The material of transformer: We have two types, one is with copper and another one is with aluminum. It depends on your requirement. In fact, those two have difference if normal work well. Only except the long life. Copper is better and also higher price.

5.The logo: If you have good quantity, it absolute no problem to do OEM.
6.Our market: our products are popular in Indonesia, Philippines, Russia, USA, Middle East and so on. Some of them are our regular customers and some of them are developing. We hope you can join us and make mutual benefit from our cooperation..
7.Warranty: in 12 month since BL date.


why choose Hengfengyou:

1.quick response in before sales period help you got order.
2.excellent service in production time let you know each step we made.
3.reliable quality solve you after sale headache.
4.long period quality warranty ensure you can buy without hesitate.


If any interest , pls feel free to contact us:


three phase 5000kva oil immersed electric transformer 11kv to 440v 3

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