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China Suppliers Factory Prefabricated 35kV Substation: Corrosion-Resistant Design for Wind Power Applications
Products Description
1
Floor Area Reduced by 80% – 90%
Compared to conventional civil engineering substations that require separate buildings and spacious layouts, the YB-12 box-type transformer of the same capacity level requires only 1/10 to 1/5 of the floor area. This means that in urban centers, commercial complexes, or high-density residential areas where land resources are increasingly scarce, you can deploy a complete power distribution system in a space the size of a parking lot. This revolutionary improvement in space utilization efficiency directly translates into significant cost savings in land use and greater planning flexibility.
2
Wide Applicability and Adaptability
From high-rise building complexes in urban core areas, upscale residential communities, to emerging high-tech industrial parks; from rural and urban power grid renovation projects to small and medium-sized industrial and mining enterprises, even temporary construction sites and sports venues for short-term power usage, YB-12 can provide matching power supply solutions for all these scenarios. Its compact design makes it easy to be flexibly deployed in various complex environments.
3
Significant Optimization of Entire Construction Cost — Over 70% Reduction in On-Site Work
The prefabrication of the factory enables a reduction of over 70% in on-site construction volume. Users do not need to undertake complex substation design; they only need to provide a flat foundation, significantly simplifying the design process. The construction period can be shortened from the traditional 3–6 months to 2–4 weeks, significantly reducing labor, management, and financial costs. This "rapid deployment" capability is particularly suitable for commercial projects with tight schedules or emergency power supply requirements.
4
Modular Integration — "Substation as a Product"
This modular integration not only achieves seamless connection between devices, but also clearly separates the functional areas (high-voltage room, transformer room, low-voltage room) through a scientific layout. While ensuring the safe operating distance, it minimizes the overall volume to the greatest extent. Each unit has completed internal connections and tests before leaving the factory, truly realizing the advanced concept of "substation as a product".
Product Specifications
| Name | Unit | High-Voltage Electrical Cabinet | Transformer | Low-Voltage Electrical Cabinet |
| Nominal Voltage | KV | 10 | 10/0.4 | 0.4 |
| Rated Current | A | 630 | — | 100~2500 |
| Rated Frequency | Hz | 50 | 50 | 50 |
| Rated Capacity | KVA | — | 100~1250 | — |
| Rated Thermal Stability Current | kA | 20/4S | — | 30/15 |
| Rated Dynamic Stable Current (Peak) | kA | 50 | — | 63 |
| Rated Closing Short-Circuit Current (Peak) | kA | 50 | — | 15~30 |
| Rated Breaking Short-Circuit Current | kA | 31.5 | — | — |
| Rated Starting Load Current | A | 630 | — | — |
| 1min Power Frequency Withstand Voltage | kA | Intergranular 42 fracture surfaces between 48 layers | 35/28 (5min) | 20/2.5 |
| Lightning Impulse Withstand Voltage | kA | Intergranular 42 fracture surfaces between 48 layers | 75 | — |
| Shell Protection Grade | — | IP23 | IP23 | IP23 |
| Noise Level | dB | — | Oil transformer <55 / Dry transformer ≤65 | — |
| Loop Number | Amount | 1~6 | — | 4~30 |
| Maximum Reactive Power Compensation on the Low-Voltage Side | kvar | — | — | 300 |
Detail Pictures
Frequently Asked Questions
Q
What is the YB-12 box-type transformer and what is it used for?
The YB-12 is a compact, prefabricated box-type transformer substation that integrates a high-voltage electrical cabinet, transformer, and low-voltage electrical cabinet into a single modular unit. It is used to supply and distribute power in urban centers, residential communities, industrial parks, construction sites, and other environments requiring efficient power distribution.
Q
How much floor space does the YB-12 box-type transformer require compared to a conventional substation?
The YB-12 requires only 1/10 to 1/5 of the floor area of a conventional civil engineering substation of the same capacity. This represents an 80%–90% reduction in footprint, making it ideal for land-scarce environments such as urban centers and commercial complexes.
Q
How long does it take to install and commission the YB-12 on-site?
Thanks to factory prefabrication and modular design, on-site construction volume is reduced by over 70%. The installation period is typically shortened from the traditional 3–6 months to just 2–4 weeks. Users only need to prepare a flat foundation — no complex substation design is required.
Q
What is the rated capacity range of the YB-12 transformer?
The YB-12 transformer supports a rated capacity range of 100 KVA to 1,250 KVA, with a nominal voltage of 10/0.4 KV and a rated frequency of 50 Hz. The low-voltage side supports rated currents from 100 A to 2,500 A, making it suitable for a wide range of power demand scenarios.
Q
What protection grade does the YB-12 enclosure provide?
All three compartments of the YB-12 — the high-voltage electrical cabinet, transformer room, and low-voltage electrical cabinet — are rated at IP23, providing protection against solid objects larger than 12.5mm and water spray at an angle up to 60° from vertical, ensuring reliable operation in various outdoor and semi-outdoor environments.
Q
Is the YB-12 suitable for both temporary and permanent power supply applications?
Yes. The YB-12's compact and modular design makes it highly versatile. It is equally suitable for permanent installations such as high-rise buildings, industrial parks, and residential communities, as well as temporary applications including construction sites, sports venues, and emergency power supply scenarios that require rapid deployment and flexible relocation.