- Low loss, 25% lower than S9 type transformer loss
- No-load current is greatly reduced, noise is also greatly reduced, and it also has the characteristics of energy saving and high...
Oil Immersed Transformer
Your Professional Oil Immersed Transformer Supplier
Shaanxi Sefon Electrical Equipment Co., Ltd. (referred to as Sefon), established in 2009, is a high-tech enterprise integrating research and development, design, production, sales, service, and power engineering general contracting. Our company mainly produces 35kV and below oil immersed transformers, dry-type transformers, special transformers, dry-type iron core series reactors, high and low voltage switchgear, box type substations, prefabricated cabins, and power quality control products.
-
![10kV S11series Oil Immersed Distribution Transformer]()
-
![10kV S13 Series Oil Immersed Distribution Transformer - Low Loss & Eco-friendly]()
10kV S13 Series Oil Immersed Distribution Transformer - L...Environmental protection and energy saving: As a green energy-saving flagship product for urban-rural power grid upgrading, the S13 transformer adheres to eco-friendly design—adopting...read more -
![10kV S20series Oil Immersed Distribution Transformer]()
10kV S20series Oil Immersed Distribution TransformerEnvironmental protection and energy saving: S13 transformer is a green energy-saving equipment that is beneficial to environmental protection and is the latest product promoted and used in urban...read more
Why Choose Us
Certification
Passed ISO9001:2008 quality management system certification, ISO14001:2015 environmental management system certification, and OHSAS18001:2007 occupational health and safety management system certification.
R&D Team
In recent years, the technology research and development team has independently developed and made significant technological progress in major products such as special power equipment and power quality equipment, based on the reference of advanced technologies at home and abroad, and has obtained more than ten national patents.
Advanced Equipment
WR horizontal winding machine; ZBR-1000 automatic cable winding machine; ZBR-1000 shearing machine; ZY-50 vacuum oil filter; HB electric hot blast constant temperature drying oven; WLJ-1200 corrugated paper board machine; SRX2600 three-dimensional iron core winding machine; DHR1400 foil winding machine; 303E-3-S busbar processing machine; ZQ4125 desktop drilling machine, etc.
Our Services
The company is fully committed to providing customers with meticulous and professional consulting services. For problems that arise during the use of products or equipment, based on user feedback, our company's after-sales service center will coordinate with them, including product installation, maintenance, and technical Q&A.
Oil Immersed Transformer Specifications
|
Item |
Data |
|
Aplication |
Photovoltaic |
|
Type |
Insulating mineral oil ,according to standard IEC 60296 |
|
Cooling method |
ONAN |
|
Installation |
Outdoor / Indoor |
|
Primary nominal voltage |
34.5 KV (available 13.2KV, 13.8KV 15KV ,11KV..) |
|
Secondary nominal voltage |
800 V |
|
Frequency |
60 Hz |
|
Connection group |
Dyn11 Yn11 (secondary double winding) |
|
Losses |
Reduced |
|
Max. losses in empty (no load) |
BK36B036 |
|
Max losses in load |
BK36B036 |
|
Tapping changer |
± 2 x 2.5% , manual |
|
Short-circuit impedance |
6% |
|
Class |
A |
|
Corrosion |
C 4 |
|
DV/DT |
500V /us |
|
MT side connection |
By angled plug-in terminals |
|
BT side connection |
Through terminals on copper plate |
|
Connection protections MT side |
Metal drawer cover for outdoor IP55 (Optional) |
|
Connection protections BT side |
IP55 metal outdoor cover drawer with cable glands for BT cable entry (optional) |
|
Cuba oil collection and filter |
Optional |
|
Wheels |
Yes |
|
Lifting lugs |
Yes |
|
Filling arrangement oil and drainage |
Yes |
|
Communication and control |
DGPT2 digital output signals |
|
Product warranty |
≥ 2 years |
Key Features
Safety: Utilizing advanced design and manufacturing techniques, these transformers are engineered with a strong focus on safety.
Reliability: These power transformers undergo precision design and rigorous quality control to ensure their long-term reliability.
Environmental Friendliness: Modern high voltage side 20kV to 220kV power transformers are constructed using eco-friendly materials and low-loss designs to minimize energy wastage and reduce their adverse impact on the environment.
High Energy Efficiency: These transformers employ high-efficiency designs to minimize energy losses. They exhibit low no-load losses and high efficiency at rated loads, contributing to reduced operational costs within the power system.
Main Components
01/
Single-phase transformers use one pair of windings. It's used in lower-load situations, such as rural areas.
02/
Three-phase transformers are made up of three pairs of windings. The windings typically go around a core sectioned into three parts.
03/
Power transformers are designed to handle much higher loads. They can step voltages up or down and transmit a current from one place to another.
04/
Distribution transformers transmit lower voltages from the electrical grid to homes and businesses. They are much smaller than power transformers.
Applications
Power Generation
Used in power plants to step up the voltage of generators to high transmission levels, reducing energy loss over long distances.
Transmission and Distribution
Key components in electrical substations to adjust voltage levels for efficient energy delivery to consumers.
Urban and Rural Grids
Provide stable and efficient power supply for residential, commercial, and industrial areas.
Industrial Settings
Power factories and industrial facilities with high power demands and specific operating conditions.
Conusulting Process
01
We will respond to your inquiry within 1 hour and recommend suitable transformer according to your needs. At the same time, we will provide you with reasonable quotations and payment terms.We have a professional and independent drawing team andte chnical team, and we will confirm all the contents on the drawing with you within 7 days after payment.
02
After designing the production drawing, the factory will prepare the stock, produce, and conduct quality inspection before shipment.
03
We have a professional team to guide the installation, and also support on-site installation. We will provide you with more than 2 years of warranty service.
Our Certificates
FAQ
We're professional oil lmmersed transforme manufacturers and suppliers in China, providing high quality products with low price. We warmly welcome you to wholesale cheap oil lmmersed transforme made in China here from our factory. Contact us for customized service.
Dry Transformer, vehicle mounted mobile substation, GCS Low Voltage Draw out Switchgear