Main Functions And Features
-High reliability, advances level of performances, reasonable economical indicators.
-The core joints are of stepped shape with 3 steps, and the surface of the core is coated with cured paint to lower losses and noise.
-The winding has novel structure and its oil passage is reasonable designed. Its newly designed insulation structure helps enhance its mechanical strength and the short circuit withstanding ability.
-The oil tank is in various types, all have good outlook.
Transformer Structure
| Rated Capacity(kVA) | H.V. Winding (kV) | Tapping range of high voltag (%) | L.V. winding (kV) | Vector Group | No-Load Loss(W) | Load Loss (W) | No-load current (%) | Short-circuit impedance (%) |
| 31500 | 220 242 | ±2×2.5% | 6.3 6.6 10.5 | YNd11 | 28 | 128 | 0.56 | 12~14 |
| 40000 | 32 | 149 | 0.56 | |||||
| 50000 | 39 | 179 | 0.52 | |||||
| 63000 | 46 | 209 | 0.52 | |||||
| 75000 | 10.5 13.8 | 53 | 237 | 0.48 | ||||
| 90000 | 61 | 273 | 0.44 | |||||
| 120000 | 75 | 338 | 0.44 | |||||
| 150000 | 10.5 13.8 15.75 18 21 | 89 | 400 | 0.40 | ||||
| 160000 | 93 | 420 | 0.39 | |||||
| 180000 | 102 | 459 | 0.369 | |||||
| 240000 | 128 | 538 | 0.33 | |||||
| 300000 | 15.75 18 21 | 151 | 641 | 0.3 | ||||
| 360000 | 173 | 735 | 0.3 | |||||
| 370000 | 176 | 750 | 0.3 |
Our Workshop
Company Introduction 
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 rapid economy 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. .
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 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 partnership with Schneider, ABB, Simens, Chint 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!
HFY Certificate 
Our Services
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 world wide
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
The Finished Project
Team Show
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 your order quantity and it normally takes about 15-20 days.
Q4: How do you control the quality?
A4: We have QC team comply with TQM to ensure the quality. Each step is in compliance to the standards. At the same time, we will take photos and shoot video for you if you need.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.