High-Quality YB□12-0.4 Series Prefabricated Substation (European Type Substation) Factory, Company

YB□ series prefabricated substations are independently designed by our company for urban power grids. They integrate medium-voltage switchgear, transformers, and low-voltage equipment, suitable for 12kV, 50Hz three-phase AC systems with capacity ≤2500kVA. Widely used in residential areas, commercial buildings, construction sites, high-rises, industrial plants, and temporary sites, they support looped network and radial terminal power supply. Featuring compact structure, high integration, safe and reliable operation, easy maintenance, and attractive appearance, they also offer small size, low footprint, minimal on-site work, short commissioning time, and mobility with load centers.

Product Description

Type Designation

YB-4 Type Designation Diagram
1 Prefabricated Substation
2 Structural Feature (M for "Mu" shape, P for "Pin" shape)
3 Performance Level Code
4 Rated Voltage of Transformer High-Voltage Side (kV)
5 Rated Voltage of Transformer Low-Voltage Side (kV)
6 Rated Maximum Capacity of Transformer (kVA)

Operating Conditions

  • Ambient air temperature: max +40℃, min -25℃
  • Altitude: ≤ 1000m (up to 3000m with specially ordered transformers and low-voltage components)
  • Vertical inclination: ≤ 5°, free from severe vibration and shock
  • Air humidity: ≤ 90% (at +25℃)
  • Free from conductive dust, explosion hazards, and gases corrosive to metals and electrical components
  • Outdoor wind speed: ≤ 35m/s

Product Display

YB 12-0.4 Series Prefabricated Substation Front View
YB 12-0.4 Series Prefabricated Substation Side View

Product Features

The enclosure is designed with reference to advanced foreign technologies and adjusted to actual conditions, featuring robustness, heat insulation and ventilation, good performance, dust prevention, small animal prevention, moisture resistance, beautiful appearance and convenient maintenance. Enclosure materials include aluminum alloy plate, steel plate, composite plate, stainless steel plate, non-metallic materials (glass fiber reinforced cement), etc.

The high-voltage side generally adopts load switches, or vacuum circuit breakers with complete anti-misoperation functions. Optional equipment includes XGN20-12L SF6 ring main units, HXGN15A, HXGN17 and other ring network switchgears. Transformers can be oil-immersed, fully sealed or dry-type. The substation has perfect protection performance, convenient operation, optional high and low voltage metering, and can be equipped with automatic reactive power compensation devices as required.

The box top cover is a double-layer structure filled with foam plastic for excellent heat insulation. The high and low voltage rooms have independent top plates, and the transformer room is equipped with anti-condensation and automatic temperature control monitoring, heating and cooling devices.

The box adopts natural ventilation, and forced ventilation equipment can be added. Dust-proof devices are installed on the outer side of door panels and side plates corresponding to the louver positions.

YB-2 Substation Layout Configuration

Technical Parameters

Item Unit High-Voltage Electrical Equipment Transformer Low-Voltage Electrical Equipment
Rated Voltage kV 12 10/0.4 0.4
Rated Current A 630 144/3600 3600
Rated Frequency Hz 50 50 50
Rated Capacity kVA 42(to earth/phase), 48(break) 50~2500 -
1min Power Frequency Withstand Voltage kV 75 35/28 2.0/2.5
Lightning Impulse Withstand Voltage kV - 75 -
Enclosure Protection Class - IP23
Noise Level dB - Oil-immersed ≤ 55, Dry-type ≤ 65 -
Overall Dimensions (L×W×H) mm 4000×2300×2500 ~ 8600×3300×3000

Frequently Asked Questions (FAQ)

What materials are available for the substation enclosure?
The enclosure can be manufactured using various durable materials including aluminum alloy plate, steel plate, composite plate, stainless steel plate, and non-metallic options such as glass fiber reinforced cement.
What transformer types can be integrated into this prefabricated unit?
The substation is versatile and supports both oil-immersed, fully sealed transformers and dry-type transformers, with rated capacities ranging from 50 kVA up to 2500 kVA.
Can the equipment operate in high-altitude environments?
Standard configurations are designed for altitudes up to 1000m. However, it can operate at elevations up to 3000m when configured with specially ordered transformers and low-voltage electrical components.
How does the substation handle temperature control and condensation?
The enclosure features a double-layer foam-insulated top cover. The transformer room includes anti-condensation and automatic temperature control monitoring with heating and cooling capabilities, supported by natural and optional forced ventilation.
What is the protection rating and environmental resistance of the unit?
The substation offers an IP23 enclosure protection rating. It is protected against dust and pests via louver-mounted filters, withstands wind speeds up to 35m/s, and operates reliably in temperatures from -25℃ to +40℃.

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