Oil-immersed Transformer

20/22 kV Fully Sealed Three-phase Oil-immersed Distribution Transformer For European (S9-M Series)

  • Series: S9-M
  • USES: Distribution transformer
  • Country of origin: China
  • Terms of payment: L/C, T/T, Western Union, Paypal, Money Gram
  • Certification: ISO9001、CB、CE、KEMA、ASTA

Product overview

  - The actual measurement of the product is better than GB and IEC standards, CE, RoHS and KEMA certification
  - More than 50 countries and regions around the world run verification of high reliability
  - It is mainly used in 20KV distribution network, power supply and distribution system of industrial and mining enterprises and civil buildings
  - Products are mainly sold 12598 sets to Spain, Germany, France, Italy, Greece, Iceland, Finland, Albania and other European countries, OEM/ODM services
  - Executive standard: IEC 60076 series, IEC 6013, IEC 60214-1, IEC 60296;GB1094-1996, GB/T6451-2008, GB/T7597-2007, etc
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Product advantage

Leading technology
 - High voltage copper strip winding technology, improve lightning resistance

 - Low voltage copper foil winding technology, high quality A class insulation material insulation
 - Small magnetic leakage, high mechanical strength, strong resistance to short circuit
 - Core 45° fully oblique joint stepping laminated structure

The shell
 - Japanese mitsubishi laser cutting machine and numerical control punching, reducing, folding and other equipment to ensure the accuracy of processing
 - ABB robot automatic welding, laser detection, to avoid leakage, pass rate of 99.99998%
 - Electrostatic plastic spray treatment, 50 years do not take off the paint (coating corrosion resistance within 100h, hardness ≥0.4)
 - Sealed structure, maintenance-free, normal operation life of more than 30 years

The iron core
 - The iron core is made of high quality cold-rolled grain oriented silicon steel sheet with mineral oxide insulation (from Baosteel and WISCO of China).
 - By controlling the cutting and stacking process of silicon steel sheet, the loss level, no-load current and noise can be minimized
 - The iron core is specially reinforced to ensure the structure of the transformer is firm during normal operation and transportation

 - The low voltage winding is made of high quality copper foil with excellent insulation resistance
 - The high-voltage winding is usually wound with insulated copper wire, using the technology patented by hengfengyou electric
 - It has very good ability to bear radial stress caused by short circuit

High quality material
 - Baosteel and WISCO produce silicon steel sheets
 - China's high quality oxygen free copper
 - CNPC (Kunlun Petroleum) High quality transformer oil (25#)

Other Notes
 - The low voltage outlet terminal is tin-plated copper bar
 - High voltage outlet terminals are ring - type tin-plated bolts
 - Default no load regulation (can be customized load regulation) tap switch 5 or 7 adjustment
 - Transformers above 630KVA are equipped with gas relay protection

Patent technology
 - Thanks to the patented technology of "ultra-low loss energy-saving power transformer" of Hengfengyou Electric, the material can be saved by 5%, and the loss of the transformer can be reduced by 10-20% compared with similar products in the market, which is more energy saving and environmental protection.

Conditions of use

  - Altitude less than 1000m, air temperature -25℃~40℃, humidity less than 90% (+25℃)
  - The vertical incline should not exceed 5°, there is no severe vibration place, and the outdoor wind speed should not exceed 35m/s
  - No gas or conductive dust that seriously affects the insulation of the transformer;No explosion hazard, no corrosion of electrical components
  - If the above normal operating conditions are exceeded, customers can customize the solution with our company

Roduct parameters

    - Input voltage: 20kV 22kv

  - Output voltage: 0.4/0.415kv
  - Capacity: 50-5000 kva
  - Frequency: 50/60hz
  - Remark: voltage, capacity, frequency, connection group and loss can be customized according to customer requirements

Ordering instructions

  - Main parameters of transformer (voltage, capacity, loss and other main parameters)
  - Transformer use environment (altitude, temperature, humidity, place, etc.)
  - Other customized requirements (tap switch, color, oil pillow, etc.)
  - The minimum order quantity is 1 set, global delivery within 7 days
  - The normal delivery period is 30 days, with fast delivery worldwide

Our advantages

  - Authoritative certification: ISO, ANSI, CB, etc
  - Perfect SQA quality management system and patented technology to ensure high quality products
  - Efficient production equipment and low raw material prices to ensure the price advantage
  - Sufficient inventory, short delivery time and  fast delivery worldwide
  - Perfect after-sales service system, allowing customers to buy worry-free
  - Provide OEM/ODM services. Welcome clients to visit our factory.

News and information

Contact us


+86 15853252696(Jack)

+86 158 5326 5269(Alisa)



Email: info@hengfengyou.com

Address: 506 Huicheng Road, Chengyang District, Qingdao City, China

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