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YBW Outdoor Prefabricated Substation

Switchgear Cabinets

YBW Outdoor Prefabricated Substation

YBW series prefabricated substations integrate high-voltage devices, transformers and low-voltage devices into compact complete distribution units, to receive and distribute power for high-rise buildings, residential zones, industrial parks, mines, oil fields and temporary construction sites.They feature high integration, compact layout, easy maintenance and mobility.

Occupying 1/10-1/5 of the land area of conventional masonry substations at the same capacity, they cut design workload, construction work and overall investment. Compatible with ring main, dual-power and radial terminal distribution systems, they are widely adopted for new build and upgrade of urban and rural substations.

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Product Overview

YBW series prefabricated substations integrate high-voltage devices, transformers and low-voltage devices into compact complete distribution units, to receive and distribute power for high-rise buildings, residential zones, industrial parks, mines, oil fields and temporary construction sites.They feature high integration, compact layout, easy maintenance and mobility.

Occupying 1/10-1/5 of the land area of conventional masonry substations at the same capacity, they cut design workload, construction work and overall investment. Compatible with ring main, dual-power and radial terminal distribution systems, they are widely adopted for new build and upgrade of urban and rural substations.

Model and Meaning

Service Conditions

  • 1. Ambient air temperature: upper limit ≤ 40 ℃, lower limit -10 ℃
  • 2. Solar radiation ≤ 1000W/m²
  • 3. Altitude ≤ 1000m
  • 4. Ice coating thickness ≤ 20mm
  • 5. Wind speed ≤ 35m/s
  • 6. Humidity: daily average relative humidity ≤ 95%; monthly average relative humidity ≤ 90%;daily average water vapor partial pressure ≤ 2.2kPa; monthly average water vapor partial pressure ≤ 1.8kPa
  • 7. Seismic intensity ≤ 8 degrees
  • 8. Sites without fire risk, explosion hazard, heavy contamination, chemical corrosion and severe vibration.
  • Note: If special operating conditions apply, please consult the manufacturer before placing orders.

Structural Features

  1. The enclosure has high-voltage, transformer and low-voltage compartments. Multiple supply modes, two transformer types and customizable low-voltage functions are available.
  2. Anti-misoperation interlocks are equipped in the high-voltage compartment. Transformers can be track-mounted for easy removal, with built-in compartment lighting for convenient maintenance.
  3. Combined natural and forced ventilation with thermostatic fans ensures reliable operation.
  4. Color steel casing provides corrosion, water and dust protection for long outdoor use.

Technical Parameters

YBW-12/0.4 Outdoor Prefabricated Substation

Name Unit High voltage electrical equipment Transformer Low voltage electrical equipment
Rated 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 20/45   30/15
Rated dynamic current(peak) kA 50   63
Rated short circuit current (peak) kA 50   15~30
Rated breaking shortcircuit curreet kA 31.5(fuse)    
Rated breaking load current A 630    
1min power frequency withstand voltage kA 42 for earth /phase-to-phase,48 across break gap 35/28(5min) 2.0/2.5
Lightning impulse withstand voltage kA 75 for earth /phase-to-phase,85 across break gap 75  
Shell protection grade   IP33D/IP23D(Transformer Enclosure)
Noise level dB   Oil-immersed s55, Dry-type s65  
Number of loops piece 1-6 2 4-30
Maximum reactive power compensation on the low voltage side Kvar     300