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China Suppliers Factory Prefabricated 35kV Outdoor Substation for Wind Power and Corrosion-Resistant Design
Products Description
YB-12 Box-Type Transformer — Key Advantages
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1Floor 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.
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2Wide 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.
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3Significant Optimization of Entire Construction Cost
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.
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4Modular Integration with Factory-Tested Connections
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 (Low-Voltage Side) | kvar | — | — | 300 |
Detail Pictures
Frequently Asked Questions
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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 high-voltage switchgear, a transformer, and low-voltage distribution equipment into a single enclosure. It is used to supply and distribute electricity in urban buildings, industrial parks, residential communities, construction sites, and other scenarios where a complete power distribution system is needed in a limited space.
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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 space-constrained environments such as urban centers, commercial complexes, and high-density residential areas.
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How long does it take to install and commission the YB-12 on-site?
Because the YB-12 is factory-prefabricated and pre-tested, on-site construction volume is reduced by over 70%. The installation period is typically 2–4 weeks, compared to the 3–6 months required for a traditional substation. Users only need to prepare a flat foundation before deployment.
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What is the rated capacity range of the YB-12 transformer?
The YB-12 supports a transformer rated capacity range of 100 KVA to 1,250 KVA, with a nominal voltage of 10/0.4 KV. The low-voltage side supports rated currents from 100 A to 2,500 A, making it suitable for a wide range of power demand levels.
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What protection grade does the YB-12 enclosure provide, and is it suitable for outdoor use?
All three compartments of the YB-12 — the high-voltage cabinet, transformer room, and low-voltage cabinet — carry an IP23 shell protection grade. This provides protection against solid objects larger than 12.5 mm and against vertically dripping water, making it suitable for both indoor and sheltered outdoor installations.
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Can the YB-12 be used for temporary power supply needs such as construction sites or events?
Yes. The compact and modular design of the YB-12 makes it highly suitable for temporary or short-term power supply applications, including construction sites, sports venues, and outdoor events. Its rapid deployment capability and self-contained structure allow it to be relocated and recommissioned with minimal effort and cost.