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AC Traction Power Supply

ABB offers a comprehensive range of AC traction substations for all types of applications including regional railway networks, dedicated freight and high speed lines. Traction voltages are normally 15 or 25 kV, but other voltage levels can also be provided.

Feeding schemes are adopted to the specific power requirements, return current circuit design, restrictions with regards to electromagnetic compatibility and other relevant factors. Traditionally, a single-phase feeding scheme with a return current circuit along the line or with booster transformers is used. However for railway lines with a high power demand, in particular high speed lines or heavy haul freight lines, two-phase systems with autotransformer substations provide the most favourable performance.

ABB’s portfolio covers the complete scope from the grid connection to the overhead contact line:

  • Electrical, mechanical and civil design of the substations
  • Grid compliant solutions
  • High voltage switchgear
  • Traction power transformers
  • Medium-voltage switchgear and components
  • Substation automation systems (protection, local and remote control)
  • Auxiliary power supply
  • Power quality equipment
  • Service and maintenance contracts

Special emphasis is placed on  optimizing the footprint of the substations and on having a high degree of pre-fabrication by adopting a modular design. 

ABB provides a comprehensive range of pre-fabricated high voltage and medium voltage modules, thus reducing on-site installation and commissioning works significantly.

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