Railway transformers

REO railway transformers – for the safe operation of railways with no EMC problems

Particularly in the railway sector when the highest possible level of comfort and safety for the passengers is important, space-saving, safe and long-lived components are essential.

With the IRIS certification of the Berlin/Hennigsdorf branch and the ISO certification in China and the USA, REO guarantees fulfilment of the very highest quality requirements.

  • NTT 400

    Onboard power supply transformer

    NTT 400
    • Rated power: 1000 - 30000 VA
    • Input voltage: 3x440 V

    The REO transformer NTT 400 is designed for on-board power supplies, which are fed by the auxiliary converter. He is used to adjust the voltage and for galvanic separation of pulse-width modulated DC link voltage and the consumers of the electrical system . A corresponding sinusoidal filter must be connected between the transformer and the inverter.
    The secondary-side load of the isolation transformer can be switchgears, rotating equipment , resistive loads or semiconductor power converters.The transformers are designed for the use in vehicles with AC or DC power (in inverter mode). This guarantees that REO transformers are optimally suited to your application. Our development methods emphasize maximum useful lifetime, cost/benefit optimization and safety.



    • Power. 1 - 30 kVA


    • Rated voltage


      Primary:
      Rated voltage: (Normal operation): 3x440 Veff 60 Hz
      Rated voltage: (external power supply): 3x400 Veff 50 Hz
      Rated voltage: (reduced operation): 3x345 Veff 47 Hz


      Secondary:
      Voltage: 3x230 Veff



    • Cooling: AN / AF

    • Protection rating: IP00

    • Insulation class: F/H

    • Test voltage: EN 50124 / EN 60310

    • Operating temperature:  -40°C ... +55°C (optional +75°C)

    • Humidity: max. 95%

    • Pollution: PD 3

    • Vibration resistance: Cat.1 class A/B acc. to EN61373

    • Voltages: 24 / 42 / 110 / 230 / 400 / 690 Volt (Optional)

    • Switching group: Optional


     


    Customer-specific components


    Onboard power supply transformer can be custom designed. Are you interested in this product? Please contact us!


    Besides the standard components for use in the converter, REO offers customerspecific products - as individual components or as a complete solution in a ontainer. The most important criteria in railway engineering are availability for operation and passenger safety. Here, REO offers customized solutions that we develop step by step in close cooperation with our client. 

  • NTT 400 D

    Onboard power supply transformer (Roof mounted)

    NTT 400 D
    • Rated power: 10000 - 30000 VA
    • Input voltage: 3x440 V

    The REO transformer NTT 400 D is designed for on-board power supplies, which are fed by the auxiliary converter.The transformer NTT 400 D is the complete, ready to use-unit with transformer, mounting frame and housing. It is used to adjust the voltage and for galvanic separation of pulse-width modulated DC link voltage and the consumers of the electrical system. A corresponding sinusoidal filter must be connected between the transformer and the inverter.


    The secondary-side load of the isolation transformer can be switchgears, rotating equipment , resistive loads or semiconductor power converters.The transformers are designed for the use in vehicles with AC or DC power (in inverter mode). This guarantees that REO transformers are optimally suited to your application. Our development methods emphasize maximum useful lifetime, cost/benefit optimization and safety.



    • Power. 10 - 30 kVA


    • Rated voltage


      Primary:
      Rated voltage: (Normal operation): 3x440 Veff 60 Hz
      Rated voltage: (external power supply): 3x400 Veff 50 Hz
      Rated voltage: (reduced operation): 3x345 Veff 47 Hz


      Secondary:
      Voltage: 3x230 Veff



    • Insulation class: F/H

    • Test voltage: EN 50124 / EN 60310

    • Operating temperature:  -40°C ... +55°C (optional +75°C)

    • Humidity: max. 95%

    • Pollution: PD 4

    • Vibration resistance: Cat.1 class A/B acc. to EN61373

    • Voltages: 24 / 42 / 110 / 230 / 400 / 690 Volt (Optional)

    • Switching group: Optional


     


    Customer-specific components


    Onboard power supply transformer can be custom designed. Are you interested in this product? Please contact us!


    Besides the standard components for use in the converter, REO offers customerspecific products - as individual components or as a complete solution in a ontainer. The most important criteria in railway engineering are availability for operation and passenger safety. Here, REO offers customized solutions that we develop step by step in close cooperation with our client. 

  • NTT 400 U

    Onboard power supply transformer (Underfloor housing)

    NTT 400 U
    • Rated power: 10000 - 30000 VA
    • Input voltage: 3x440 V

    The REO transformer NTT 400 U is designed for on-board power supplies, which are fed by the auxiliary converter.The transformer NTT 400 U is the complete, ready to use-unit with transformer and housing. It is used to adjust the voltage and for galvanic separation of pulse-width modulated DC link voltage and the consumers of the electrical system. A corresponding sinusoidal filter must be connected between the transformer and the inverter.


    The secondary-side load of the isolation transformer can be switchgears, rotating equipment , resistive loads or semiconductor power converters.The transformers are designed for the use in vehicles with AC or DC power (in inverter mode). This guarantees that REO transformers are optimally suited to your application. Our development methods emphasize maximum useful lifetime, cost/benefit optimization and safety.



    • Power. 10 - 30 kVA


    • Rated voltage


      Primary:
      Rated voltage: (Normal operation): 3x440 Veff 60 Hz
      Rated voltage: (external power supply): 3x400 Veff 50 Hz
      Rated voltage: (reduced operation): 3x345 Veff 47 Hz


      Secondary:
      Voltage: 3x230 Veff



    • Insulation class: F/H

    • Test voltage: EN 50124 / EN 60310

    • Operating temperature:  -40°C ... +55°C (optional +75°C)

    • Humidity: max. 95%

    • Pollution: PD 4

    • Vibration resistance: Cat.1 class A/B acc. to EN61373

    • Voltages: 24 / 42 / 110 / 230 / 400 / 690 Volt (Optional)

    • Switching group: Optional


     


    Customer-specific components


    Onboard power supply transformer can be custom designed. Are you interested in this product? Please contact us!


    Besides the standard components for use in the converter, REO offers customerspecific products - as individual components or as a complete solution in a ontainer. The most important criteria in railway engineering are availability for operation and passenger safety. Here, REO offers customized solutions that we develop step by step in close cooperation with our client. 

  • RUT 500

    Leakage transformer

    RUT 500
    • Rated power: 71000 - 275000 VA
    • Input voltage: 210 - 1660 V

    In railway applications, where it‘s about the greatest possible comfort and safety of passengers, components are required that save space, are safe and have a long service life. Supply interruptions or voltage drops can lead to a range of undesirable effects such as the loss of motor power. 


    The REO leakage transformer ensures harmonized current and voltage outputs, filtering harmonics, and limiting the ripple current.With the spatial separation of the primary and secondary windings and the resulting intentional increase in the magnetic leakage field, the REO leakage transformer achieves a loose magnetic coupling. 


    This results in the combination of the function of a transformer (transforming voltage with galvanic separation) and a current-limiting choke.


     


    Options



    • Various performance classes : 50 kVA , 100 kVA , 150 kVA and 200 kVA

    • Voltage drop 10% uk ,20% , and 30%

    • Voltage ratio /Windings selectable

    • Winding material and optimized insulation degree selectable

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