Qingdao, Tanjin , Shanghai, Shenzhen, Guangzhou etc.
1 - 1
2 - 10
To be negotiated
2019 Hot three-phase oil immersed fully sealed distribution transformer
S13 (11)-M-30~2500kVA three-phase oil immersed fully sealed distribution transformer is different from the general oil immersed transformer. It cancels the oil storage tank and uses the corrugated plate heat sink of the oil storage tank to radiating & cooling, which to compensate the increase or decrease of oil volume by its elastic expansion and contraction.
Technical specs of three-phase oil immersed fully sealed distribution transformer
Connection group symbol
No-load current (%)
No-load loss (w)
Impedance voltage (%)
Tap range of high voltage
Low voltage (kv)
The application of three-phase oil immersed fully sealed distribution transformer
All series of transformer are suitable for 10kV, 20kV and 35kV power transmission and distribution systems, and can be used for power and lighting in residential areas, commercial streets, industrial and mining enterprises and rural areas.
Hot sale products
Shaanxi Sefon Electrical Equipment Co. Ltd is a high-tech enterprise specializing in R & D, production , sales of electrical equipment and EPC of electric power supply project.
1. Professional production base +Professional production equipment+ Strong production capacity
2. Lean manufacturing, produce high quality products
3. Team activities
Packaging & Shipping
Standard packing: Standard exported wooden case or according to customers' requirements.
Land transportation and sea transportation for option.
SEFON always insists on " customer first, quality priority".
1. We have special technicans to support sales team to offer the best solution based on customers' requirements.
2. All the products will be tested before delivery.
3. The service life of products is about 20 years, we supply 2 years guarantee after delivery.
1. We can arrange technicians to install the equipments and train your staff on site.
2. Our technicans can guide your installation or maintenance by video, calling or email at anytime.
SEFON got severla honors from Enterprise Quality Managment Center of Shaanxi .
SEFON has its own independent intellectual property rights, and got many patents for voltage regulator & transformer etc.
SEFON has passed CE, ISO9001:2008 quality management system, ISO14001; 2004 environmental certification system, GB / T28001-2001 occupational health and safety management system certification.
SEFON attended electric power supply exhibitions for several years.
Asia Electric Power & Electric Engineering and Smart Grid Exhibition
The International Exhibition on Electric Power Equipment & Technology
Q: Are you a manufacturer or trader?
A: We are a professional and leading manufacturer of voltage regulator, transformer, series compensation, breakers, high & low voltage switchgear for more than 10 years in China. Q: Does your company accept ODM and OEM?
A: Yes. Our R & D team owns latest technology , we can develop and produce products based on the customers' requirements.
Q: What is your delivery time?
A: It is depend on your quantity. In general, the delivery time is 7-30 days after receiving the payment.
Q: How to make an order ?
A: Confirm the product name, type , quantity, rated voltage & capacity, detailed techinical parameter if needed.
If you are interested in our products, pls don't hesitate to contact usor send us inquiry.