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The performances of model S9-M, S10-M, S11-M 10kv-35KV series full-sealed oil-immersed distribution transformers conform to Standards IEC IEEE. Its core is made of quality cold-rolled silicon sheet and is of a full-miter non-puncture structure and its coil is made of quality oxygen-free copper.
Main functions and features
Use corrugated plate or expansion radiator tank. Since no oil conservator is required, the height
Transformer reduction, because transformer oil does not shrink with air, oil aging is delayed, thereby extending the service life of the transformer. S10-M type no-load loss is 20% lower than S9-M type, S11-M is 30% lower than S9-M.
| Rated Capacity | Voltage Ratio | Vector Group | No-load losses(KW) | Impedance |
| 10kva | 110v/220v/400v/3kv | Dyn11/Yd11/Yyno | 0.08 | 4% |
| 50kva | 380v/3kv/6kv/11kv/33kv | Dyn11/Yd11/Yyno | 0.13 | 4% |
| 100kva | 380v/3kv/6kv/11kv/33kv | Dyn11/Yd11/Yyno | 0.2 | 4% |
| 200kva | 380v/3kv/6kv/11kv/33kv | Dyn11/Yd11/Yyno | 0.34 | 4% |
| 500kva | 380v/3kv/6kv/11kv/33kv | Dyn11/Yd11/Yyno | 0.68 | 4% |
| 1000kva | 380v/3kv/6kv/11kv/33kv | Dyn11/Yd11/Yyno | 1.15 | 4.5% |
| 2500kva | 380v/3kv/6kv/11kv/33kv | Dyn11/Yd11/Yyno | 2.31 | 4.5% |
| 3.5mva | 380v/3kv/6kv/11kv/33kv | Dyn11/Yd11/Yyno | 2.73 | 4.5% |
| 24mva | 11kv/35kv/69kv/110kv/220kv400kv | Dyn11/Yd11/Yyno | ||
| 100mva | 11kv/35kv/69kv/110kv/220kv400kv | Dyn11/Yd11/Yyno |
Product Structure


Other Specifications and Models

We are a professional manufacturer with 15 years of experience in electric equipments, specializing in the production of transformer (dry-type transformer, oil-immersed transformer, autotransformer, isolation transformer, etc.), voltage stabilizer, voltage regulator, switchgear,compact substation,frequency converter and other electric equipments products, and has implemented a strict and complete quality control system to ensure quality and safety, so we enjoy a good reputation in this field and are favored by domestic and foreign customers, especially in Central Asia, Southeast Asia, Africa, the Middle East, South America and other countries and regions. Customer satisfaction is our eternal pursuit, and we will continue to provide you with the most sincere, considerate and satisfactory service.Very welcome to visit our factory and establish a permanent partnership with us.






1. Factory direct sales, competitive price
2. Support customization
3. Fast delivery, for sample orders, generally 1-2 days to
complete, for large orders, generally 3-4 days to complete
4. 5-year warranty, comprehensively improve customer service system
5. 15 years of production experience
6. We have one strong R&D team who keeps developing new items for
customers all over the world to ensure that we keep the follow of new
hot selling point.
Q1:Do you have a catalog? Can you send me the catalog to see all your products?
A1:Yes, we have a product catalog. Please contact us online or email for a catalog.
Q2: I need your price list of all your products, do you have a price list ?
A2:We do not have price lists for all products. Because we have so many items, it's impossible to put all the prices on the list. And because of production costs and shipping, prices are always changing. If you would like to see any prices for our products, please feel free to contact us and we will send you a quote as soon as possible!
Q3:I can't find this product on your catalog, can you make this product for me?
A3:Our catalog shows most of our products, but not all. So please tell us what product you need and how much you want. If we don't have one, we can also design and make new molds to produce it. For your reference, it takes about 35-40 days to make a normal mold.
Q4:Can you provide samples? Are samples free?
A4:Yes, we can provide samples. Usually, we provide samples for testing quality. But you have to pay for samples and shipping.
Q5:What about your delivery time?
A5:We have many products in stock. We can send stock products within 3 working days. If there is no stock or insufficient stock, we will check the delivery time with you. "
Q6: Can we put our own logo on your product?
A6: Yes, no problem, but there is a minimum quantity requirement.
Q7: Is OEM/ODM available?
A7: Yes, our products can be customized. The R&D department has professional senior engineers, who can design and produce various electrical equipment according to the specific requirements of customers.
1.Packaging:
Small-capacity products (automatic voltage stabilizer / voltage stabilizer),
inner packaging color box, outer packaging carton.
For high-capacity products, we use sturdy plywood enclosures.
2.Shipping Methods:
By air or sea (FOB port: Ningbo, Shanghai), by express (DHL, UPS, TNT, FEDEX).


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