S11 50/60Hz Toroidal Copper/Aluminium Winding Coil Transformer 11kv to 230v|125kva 500kva Oil Immersed Transformer  

Product Description

This product conforms to the Chinese national standard GB1094.1-2013 <power transformer> and GB / t6451-2015 <three phase oil-immersed power transformer technical parameters and requirements>. This product has adopted a series of major improvements in material, technology, and structure, so that the electrical performance of the product reaches the international advanced level compared to similar products. With the characteristics of high efficiency and low loss, it can save lots of power consumption and operation costs, thus has an obvious energy-saving effect. It is a new product promoted by the state and one of the most popular products for users.



2.Main Functions And Features

1.Iron core
Is made of high-quality grain-oriented cold-rolled silicon steel sheet, with full oblique and holeless binding structure. The iron core is of multi-stage stepped shape, with three or five joints, low loss, and low noise. The rolled iron core is directly wound by special equipment, without joints and angle weight, reducing magnetic resistance and low loss. The amorphous alloy transformer core is a new kind of higher-quality iron core material, with an average drop of 72% for low air loss and 50% for no-load current compared with the traditional silicon steel sheet.
2. Coil
It is made of high-quality QQ acetal enameled round copper wire and flat copper coin drawn by an oxygen-free copper rod. Coil forms include cylinder type, continuous type, new spiral type, split type, etc with sufficient electrical strength, mechanical strength, and heat dissipation capacity. In order to increase the short-circuit resistance of the transformer, a higher quality self-adhesive transposed conductor can be used. The coil is made of self-adhesive acetal enameled flat wire. After being wound into a coil, the enameled flat wires are mutually bonded to form a rigid coil, which can withstand greater bending stress, thus enhancing the short-circuit resistance of the transformer. The biggest characteristic of the self-adhesive transposed conductor is that it can reduce the loss of the transformer. The multi-split conductor and transposition can greatly reduce the eddy current loss and circulation loss, reducing the temperature rise of the hot spot of the winding, and make the temperature distribution of the whole winding more evenly.
3. Oil tank
It is welded by high-quality steel plates elliptical or rectangular structures. The radiator elements are chip type radiator, expansion radiator, or corrugated oil tank. The oil tank sealing is tested reliably in the factory. It is sprayed with three times of primer and one time of finish paint inside and outside. The product is salt fog proof, damp heatproof, and fungus proof, which can meet the special requirements of metallurgy, petrochemical system, and wet and polluted areas. It is beautiful in appearance and reliable in operation.





3.Transformer Structure

Note: The above are some product technical parameters, if you have any questions, please contact us

Conditions of Use
1.The maximum ambient air temperature shall not exceed 40°C, and the minimum shall not below -25°C;
2.The altitude shall not exceed 1000m. If specially customized transformers and low-voltage components are used, the altitude can reach 4,000m;
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°C);
5.No gas and conductive dust that will seriously affect the insulation of the 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, a specially customized product is available.

Our Workshop



Production equipment




Company Introduction 

1.Qingdao Hengfengyou Electrical Engineering Co., Ltd. (hereinafter referred to as Hengfengyou) is a large-scale enterprise group with electricity transmission and distribution as its main business, which integrates scientific research, development, manufacturing, and trade. After 30 years of rapid economic development in China, Hengfengyou now is a leading R & D, manufacturing and service base for MV, HV and ultra-HV power distribution equipment in China. At present, we have 50 senior technicians and more than 300 employees, with a complete sales and service system. Our products sell well at home and abroad, and our annual output value adds up to $100 million.
2.At present, Hengfengyou has 6 wholly-owned and holding subsidiaries, which are respectively engaged in R & D, manufacturing and service of transformers, switchgear, package/unit substation, pole-mounted high-voltage vacuum circuit breakers, new energy, and electrical engineering. For a long time, the company has maintained close technical exchanges and cooperation with domestic and foreign universities, scientific research institutes, and electric power enterprises. Hengfengyou independently designed and developed the SCB series dry-type transformer and SC series oil-immersed transformer. Our product performs with high operation efficiency and obvious energy conservation. The overall performance index reaches the world's advanced level. The company also maintains long-term strategic partnerships with Schneider, ABB, Simens, China, and other electric suppliers. We absorbed foreign advanced experience in electrical equipment production and independently designed and developed a series of substation equipment, which realized the automation and intelligence of the substation, and of which the performance has been highly recognized by the user at home and abroad. In the following five years, the company plans to build an intelligent workshop with an annual output of 100000 transformers. Then, the intelligent robot will replace 80% of the existing labor force, which will greatly improve the production efficiency, lower production cost, and produce more energy-saving, environmentally friendly, more safe and reliable the product for the users!

Packaging & Shipping

For the shipping, we accept EXW, FOB, and CIF terms, you can use your own shipper or ours.
Fasten: To use steel wires to fasten the large products in a container to make sure it is stable enough.

HFY Certificate and Services


Our service:
We have established strict working procedures and standards in the development, production, sales and after-sales of electrical products, so as to provide customers with first-class products and the best service. 
1. Our electrical engineer has more than 10 years of working experience
2.Our workshop workers are all skilled industrial workers who have received three months 'pre-job training
3. Our sales team has been extensively trained by management consultants to provide professional solutions for customers
4. Our technical team can provide customers with 24-hour technical support worldwide
5. Our customer service team ensures that orders are delivered on time. 
Pre-sale service:
1.ISO certified excellent Manufacturer
2. Third-party authoritative certifications: SGS, CE, CB, CNAS, CQC, CCC, etc
3. Flexible payment: T/T, LC, O/A
4. Sufficient inventory, fast delivery time, and long validity of the price
5. The whole process of picture tracking can be realized in production and transportation
6. Experienced professional sales team and a strong technical team
7. Sincerely invite customers to visit the company for guidance
After-sales service:
1. If there is any quality problem after receiving the goods, you can return the goods free of charge or ship new products
2. We provide our customers with a 2-year product warranty
3. Provide 24-hour, 365-day technical guidance worldwide
4. The VIP customers enjoy our promotional activity

8.The Finished Project

FAQ
Q1: Is OEM/ODM available?
A1: Yes, it is! Our products can be Customized. We have design and engineer teams, we can customize products according to customers' drawing or requirements.
Q2: What's your MOQ?
A2: One Set.
Q3: How is the delivery time?
A3: It depends on your order quantity and it normally takes about 15-20 days.
Q4: How do you control the quality?
A4: We have the QC team comply with TQM to ensure the quality. Each step is in compliance with the standards. At the same time, we will take photos and shoot a video for you if you need it. Every product will be fully assembled and carefully tested before packing and shipping.
Q5: How long is the warranty?
A5: Within one year from the sale date, if there are any accessory problems, you just provide the photos of damaged accessory, then we will provide free accessory. According to the number of products, we will provide easily damaged accessories for free. We also can provide technical support if you need it.