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YB series prefabricated substation

Scope of application
YB-12 series intelligent integrated substation is a high-voltage switchgear distribution transformer and low-voltage distribution device,according to a certain wiring scheme arranged into one of the factory prefabricated indoor and outdoor compact distribution equipment,that is, high-voltage power,transformer,low-voltage distribution and other functions organically  combined together.Installed in a moisture-proof,rust-proof,dust-proof,rat-proof,fire-proof, anti-theft,septa,fully closed,mobile steel structure or non-metallic box,mechanical and electrical integration fully closed operation
Widely used in urban power grid transformation,residential communities,high-rise buildings industrial  and  mining,hotels,shopping  malls,airports,railways,oil fields,wharfs,highways and temporary electricity facilities and other indoor and outdoor places.

    General Introduction

    The YB Series Prefabricated Substation (also known as "compact substation" or "integrated substation") is a fully enclosed, pre-assembled power distribution solution designed for medium-voltage applications. It integrates high-voltage switchgear, transformers (typically 10kV-35kV class), low-voltage distribution panels, and auxiliary systems into a single, weatherproof enclosure. This modular design enables rapid installation, space-saving deployment, and reliable operation in various environments.

    Applications:

    • Urban and rural power distribution
    • Industrial parks and commercial complexes
    • Renewable energy projects (wind/solar farms)
    • Temporary power supply for construction sites
    • Mining, oil & gas fields, and remote areas

    Technical Parameters

    Parameter Specification
    High-Voltage Rating 10kV, 20kV, 35kV (customizable)
    Transformer Capacity 250kVA – 2500kVA
    Low-Voltage Rating 0.4kV (400V)
    Frequency 50Hz/60Hz
    Protection Level IP54/IP65 (meets IEC 60529)
    Cooling Method Natural air (AN) or forced air (AF)
    Noise Level ≤65dB (under full load)
    Ambient Temperature -25°C to +55°C
    Humidity ≤95%RH (non-condensing)
    Seismic Resistance ≤8 degrees (IEC 61463 standard)

    额定容量 
    rated capacity KVA
    电压组合及分接范围                          Voltage combination and tap range 联结组标号Connection Group Symbol  空载损耗  No-load Loss        (W) 负载损耗 Load Loss        (W) 空载电流No-load Current   (%) 短路阻抗Short Circuit Impedance  (%)
    高压      high voltage 
    KV
    分接范围 Tap Range 低压         low voltageKV
    30 10
    6.6         6.3           6
    ±5         ±2×2.5% 0.4 Yyn0   Dyn11 170 760 2.40  4
    50 240 1070 2.40  4
    80 330 1480 1.80  4
    100 360 1690 1.80  4
    125 420 1980 1.60  4
    160 480 2280 1.60  4
    200 550 2710 1.40  4
    250 640 2960 1.40  4
    315 790 3730 1.20  4
    400 880 4280 1.20  4
    500 1040 5230 1.20  4
    630 1200 6290 1.00  4
    630 1170 6400 1.00  6
    800 1360 7460 1.00  6
    1000 1590 8760 1.00  6
    1250 1880 10370 1.00  6
    1600 2200 12580 1.00  6
    2000 2740 15560 0.80  6
    2500 3240 18450 0.80  6

    Key Features

    1. Modular Design
      • Factory pre-assembled and tested for quick on-site installation.
      • Reduces installation time by up to 70% compared to traditional substations.
    2. Weatherproof Enclosure
      • Corrosion-resistant steel or aluminum alloy shell.
      • IP54/IP65 protection against dust, water, and extreme weather.
    3. Safety & Reliability
      • High-voltage switchgear with SF6 or vacuum circuit breakers.
      • Transformer with epoxy resin casting (SCB series) for fire safety.
      • Comprehensive protection relays and monitoring systems.
    4. Space Efficiency
      • Compact footprint (up to 60% smaller than conventional substations).
      • Ideal for urban areas with limited space.
    5. Energy Efficiency
      • Low-loss transformers (meets IE3/IE4 efficiency standards).
      • Intelligent power management systems.
    6. Customization Options
      • Configurable high/low-voltage switchgear layouts.
      • Optional accessories: HVAC systems, fire suppression, remote monitoring.
    7. Easy Maintenance
      • Accessible compartments for routine inspections.
      • Modular components for quick replacement.
    8. Environmental Compliance
      • No oil leakage risk (dry-type transformer).
      • Recyclable materials and eco-friendly design.

    System Configuration

    1. High-Voltage Section
      • Ring main unit (RMU) or vacuum circuit breaker (VCB)
      • Surge arresters and current/voltage transformers
      • Cable entry/exit ports
    2. Transformer Section
      • SCB series epoxy resin dry-type transformer
      • Temperature monitoring system
      • Cooling fans (optional)
    3. Low-Voltage Section
      • MCCB/MCB distribution panels
      • Power factor correction capacitors
      • Metering and protection devices
    4. Control & Monitoring
      • PLC-based control system
      • Remote monitoring via SCADA or IoT platforms
      • Optional GSM/GPRS communication module

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