YBM Prefabricated Substation
Your Professional YBM Prefabricated Substation 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.
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10kV YBM Prefabricated SubstationYBM -12/0.4 prefabricated substation is an outdoor independent complete set of power distribution equipment composed of standardized high-voltage switch complete set equipment, distribution...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.
YBM Prefabricated Substation Specifications
|
High voltage compartment |
Item |
Unit |
Parameter |
||
|
Rated frequency |
Hz |
50 /60 Hz |
|||
|
Rated Voltage |
KV |
3.3KV , 6.0KV, 6.6KV |
10KV 11KV 13.8KV 15KV 20KV 22kv |
30KV 33KV 35KV 36KV |
|
|
Max service voltage |
KV |
7.2 KV |
12KV , 24KV |
40.5KV |
|
|
Rated current |
A |
400, 630, 1000, 1250 ,1600, 2000, 2150,...etc |
|||
|
Transfer current |
A |
1200 -3150 A |
|||
|
1MIN Power frequency withstand voltage , earth -phase |
KV |
42/48, 85/95 |
|||
|
1MIN Power frequency withstand voltage , phase/fracture |
|||||
|
BIL |
KV |
75/85, 170/185 |
|||
|
Rated short circuit breaking current |
KA |
20, 31.5 |
|||
|
Transformer compartment |
Rated voltage |
KV |
3.3KV , 6.0KV, 6.6KV |
10KV 11KV 13.8KV 15KV 20KV 22kv |
30KV 33KV 35KV 36KV |
|
Rated power capacity |
KVA |
200 KVA Upto 2.5 MVA |
|||
|
Tapping range |
% |
±2 X 2.5% , ±5% |
|||
|
Vector group |
|
Yyn0, Dyn11 |
|||
|
Short-circuit Impedance |
% |
4.0 , 4.2, 4.5, 6, 8 |
|||
|
Low voltage compartment |
Rated voltage |
V |
220, 380, 400, 415, 433, 440, 660, 690,800 |
||
|
Main circuit rated current |
A |
50 -4000 |
|||
|
Branch current |
A |
5-800 |
|||
|
Enclosure |
Protection level |
|
|||
|
HV compartment |
|
IP33, IP65.. |
|||
|
LV compartment |
|
IP33 |
|||
|
Transformer compartment |
|
IP23 |
|||
|
Noise level |
DB |
≤ 50 |
|||
Key Features

- Ambient air temperature: -5℃~+40℃ and the average temperature should not exceed +35℃ in 24h
- Indoor altitude above sea level: Maximum installation altitude: 2000m
- Relative humidity should not exceed 50% at max temperature +40℃. Higher relative humidity is allowed at lower temperature. Ex.90% at +20℃. But in view of the temperature change, it is possible that moderate dews will produce casually
- No fire, explosion danger, serious pollution, chemical corrosion and severe vibration
- Installation gradient not exceed 5°
- The equipment shall be installed in a place where there is no violent vibration and impact, and the place where the electrical components are not corroded.
Applications
Urban and Rural Development
Used for public power distribution networks, residential communities, high-rise buildings, and commercial centers.
Industrial Applications
Suitable for factories, mines, oilfields, and industrial parks, providing a reliable power source for various industrial operations.
New Energy Sector
Widely adopted in solar power plants, wind farms, and energy storage facilities, integrating with new renewable energy infrastructure.
Infrastructure Projects
Applied in ports, airports, subways, and highway systems to meet their power distribution needs.
- High voltage: Way of incoming line: terminal type, looped network type or double power in.
- Transformer: The transformer type, serial-number, the connection symbol group, capacity and the impedance voltage of the transformer.
- Low voltage Switch Supplier: The number of the outgoing ways and the rated current value of each outgoing switch.
- Type of the busbar (copper or aluminum)
- Layout of the transformer substation(with the operation corridor or not)
- The material of transformer shell: composite board (commonly used), steel plate, stainless board or cement.

Warranty
Firstly we have quality certificates like CCC, ISO9001..etc for our switchgears & power equipments ,have CE,Rohs,CB,TUV,Kema..for their electrical parts and accessories. Secondly we supply 1 year quality guarantee,during this period we supply free repair,maintenance and technical support.Certainly for some of switchgears and power equipments, their using life is over 20 years,no problem.
Our Certificates






FAQ
We're professional ybm prefabricated substation manufacturers and suppliers in China, providing high quality products with low price. We warmly welcome you to wholesale cheap ybm prefabricated substation made in China here from our factory. Contact us for customized service.
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