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Railway Traction Transformer

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Railway Traction Transformer Product Details:


Traction transformer is applied to railway as a power supply for electric power train. Its primary side is connected with two phases of the three-phase power grid; its secondary side connected with the traction busbar and the other side connected with railway track and grounded. The capacity efficiency is high but it causes large negative sequence current hence double circuit power supply is not available. As the unstable traction load, frequent short-circuit failure and large harmonic wave, the operation situation of traction transformer is much more server therefore strong overload withstand ability and short-circuit impulse withstand ability is required for traction transformer.


Ø  IEC 60310-2004 Railway applications – Traction transformers and inductors on board rolling stock  

Ø  IEC 60076

Ø  IEC 61373


Ø  Low loss

Ø  Basic characteristics

Ø  optimized transformer weight and dimensions

Ø  built-in equipment made of materials suitable for mounting on traction transformer

Ø  high temperature class of insulation materials used (thermal class F)

Ø  two series of resonant circuit reactors integrated in the main transformer tank

Ø  High efficiency

Ø  Strong mechanical strength and short-circuit withstand ability

Ø  Operation reliability

Ø  Easy maintenance

Ø  Pretty outline and compact structure

Ø  100% guaranteed no leakage


Brief specification:

Ø  Voltage class: 33kV to 230kV

Ø  Capacity: 630050000kVA

Ø  No load current: 0.18~0.9%

Ø  Losses: no-load losses is fully comply with IEC standard requirements


Ø  Application: 10kv,11kv, 15kv, 33kv, 35kv,36kv,60kv,66kv,90kv,110kv,132kv, 220kv, 230kv,245kv traction transformer is used in railway and subway/metro.

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