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YBD-Landscape-Box-Type-Transformer.jpg
YBD-Landscape-Box-Type-Transformer.jpg

China YBD Landscape-Type Underground Compact Substation: Innovative Design by Leading Suppliers and Factory

The YBD Landscape-Type Underground Compact Substation is a revolutionary solution geared towards urban infrastructure, particularly designed for China’s fast-developing landscapes. This substation uniquely combines underground installation with an aesthetically pleasing surface-level design. The waterproof underground transformer unit and the dual-purpose outdoor cabinet featuring advertising display capabilities make it an ideal choice for airports, highways, and tunnels, where space is at a premium
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    Product Details

    Type Designation
    YBD-Landscape-Type-Underground-Compact-Substation-10
    1 Prefabricated
    2 Substation
    3 Underground Type
    4 Transformer Rated Capacity (kVA)
    5 High-Voltage Side Rated Voltage (kV)
    6 Low-Voltage Side Rated Voltage (kV)
    Operating Conditions

    Altitude: ≤1000m

    Temperature Range: -25°C to +50°C

    Humidity: ≤95% daily average / ≤90% monthly average

    Installation: Max 3° slope

    Environment: No excessive vibration, explosive gases, or corrosive substances

    For use beyond these specifications, please contact us for customized solutions.

    Product Display
    YBD-Landscape-Box-Type-Transformer
    YBD-Landscape-Type-Underground-Compact-Substation-(1)
    YBD-Landscape-Type-Underground-Compact-Substation-(2)
    YBD-Landscape-Type-Underground-Compact-Substation-(3)
    YBD-Landscape-Type-Underground-Compact-Substation-(4)
    YBD-Landscape-Type-Underground-Compact-Substation(5)
    Technical Parameters

    ■ Rated Voltage Class: 35kV and below 10kV    ■ Frequency: 50Hz    ■ Insulation Level (See table below)

    High-Voltage Unit Rated Voltage KV 10
    High-Voltage Unit Rated Frequency Hz 50
    Rated Current A 630
    1min Power Frequency Withstand Voltage (Phase-to-Ground / Isolation Gap) kV 42/48
    Lightning Impulse Voltage kV 75/85
    Rated Short-Time Withstand Current kA/2s 20
    Rated Peak Withstand Current kA 50
    Protection Level IP67
    Low-Voltage Unit Low-Voltage Unit Rated Voltage kV 0.4
    Main Circuit Rated Current A 50~3200
    Rated Short-Time Withstand Current kA/1s 30
    Rated Peak Withstand Current kA 63
    Branch Circuit Ways Way 0~32
    Protection Level IP34
    Underground Transformer Transformer Rated Voltage kV 10
    Rated Capacity kVA 30~1600
    Power Frequency Withstand Voltage kV 35
    Lightning Impulse Voltage kV 95
    Connection Group Dyn11
    Impedance Voltage 4%/4.5%
    Losses S11
    Protection Level IP68
    Installation Dimensions Diagram
    YBD-3
    📌 Note:

    ■ This product consists of an underground transformer, lightbox-style outdoor HV/LV switchgear, and a prefabricated underground pit.

    ■ The lightbox-style switchgear features a dual-door design, ensuring the HV/LV equipment remains protected by an independent enclosure even if the lightbox is damaged.

    ■ The prefabricated pit adopts a fully sealed waterproof design, with decorative tiles on the cover and a lockable maintenance hatch.

    ■ The transformer uses plug-and-play three-phase cable connections on both HV/LV sides, with IP68-rated sealing for prolonged underwater operation.

    Installation Plan
    YBD-4
    Frequently Asked Questions
    What is the YBD Landscape-Type Underground Compact Substation?
    The YBD is a prefabricated underground compact substation that integrates an underground transformer, lightbox-style outdoor HV/LV switchgear, and a prefabricated underground pit into a single, space-saving solution suitable for urban and landscape environments.
    What is the rated voltage range of the YBD underground substation?
    The high-voltage side supports rated voltages of 35kV and below 10kV, while the low-voltage side operates at 0.4kV. The transformer rated capacity ranges from 30 kVA to 1600 kVA.
    What is the IP protection rating of the underground transformer?
    The underground transformer is rated IP68, which means it is fully sealed and capable of prolonged underwater operation. The high-voltage unit carries an IP67 rating and the low-voltage unit is rated IP34.
    What are the operating environment requirements for this substation?
    The unit is designed for altitudes up to 1000m, temperatures from -25°C to +50°C, humidity up to 95% (daily average), installation on slopes of no more than 3°, and environments free from excessive vibration, explosive gases, or corrosive substances.
    Can the YBD substation be customized for special conditions?
    Yes. For applications that exceed the standard operating specifications — such as higher altitudes, extreme temperatures, or special environmental conditions — customized solutions are available. Please contact us directly for tailored configurations.
    What are the key structural features of the YBD underground substation?
    The substation features a dual-door lightbox design that protects HV/LV equipment independently, a fully sealed waterproof prefabricated pit with decorative tile cover and lockable maintenance hatch, and plug-and-play three-phase cable connections on both HV and LV sides for easy installation.