Train chokes

Train chokes

Train chokes for standardized safety

REO has set itself the task of helping to ensure that trains are safer today and in the future. With special chokes for rail technology, we ensure that a safe operation is possible and EMC problems are eliminated at source.

Thus, voltage changes, short circuits and other phenomena that occur in dealing with electricity, does not endanger crew members and passengers. Compliance with international standards such as EN 45545 or EN 60310, the use of the latest technologies and decades of experience make REO a strong partner.

  • LD 220

    Air choke with aluminium-copper/disc winding

    LD 220
    • Rated current: 200 - 700 A
    • Inductance: 0,5 - 4 mH

    Air chokes are particularly used where high inductive linearity is required. Due to their relatively simple mechanical structure, they are not only compact, but also very robust.


    With our expertise, the REO air chokes perform to the required standard, even in the most arduous conditions.



    • Frequency of the current: DC und AC

    • Tolerances: + 10 / - 10 %, + 5 / - 5 %

    • Taps: By default, no taps (available on request)

    • Insulation: F or H

    • Cooling method and cooling liquid according to IEC 60310: AN, AF or WF

    • Test voltage: up to 12kV 60s 50Hz, up to 25kV 1,2/50µs

    • Mounting: Suspended, vertical or horizontal

    • Mechanical strength, mechanical simulation (FEM): EN 12663

    • Shock - and vibration stress: IEC 61373 Kat. 1 Kl. B



    REO Mix & Match principle 


    With REO Mix & Match you can choose from a wide range of of options - combine the various options in order to always get the best product for your application.


    REO is able to offer different designs and winding techniques, a variety of conductor materials and structures. Depending on the specific requirements, we are able to produce an optimal solution by combining these parameters to provide the perfect solution.


    Optional



    • Layer winding/Disc winding

    • Aluminium, Copper or aluminium+copper

    • Protections: Paint coating, protective coating, housing or REO Xtreme

    • Cooling fan/unit

    • Sensors: Switch NO / NC, PT100, NTC, PTC



  • NTT AMCC 400

    REO TSS choke with amorphous core

    NTT AMCC 400

    As a passive inductive component in power supplies and in power electronics, the buck-converter choke is used for attenuating undesirable frequencies or for saving and storing energy.


    The term buck-converter choke indicates the complete ready-for-use unit containing the choke, air cooling, mounting and connections. The chokes are available with different cores, which enables individual selection depending on the requirement of the application. In addition to iron-based cores, chokes with cores of amorphous alloy are becoming more common, in the form of toroidal cores, cut strip-wound cores or special custom solutions.


    The use of amorphous materials offers an exceptional combination of high satur­ation flux density (1.56 T) and a high permeability. In addition to the high temperature class, further features of amorphous alloy include low hysteresis and eddy-current losses, suitability for the medium-frequency range (<20 kHz) and use for high powers up to 500 kVA.



    • Type of choke: Up/Buck converter choke with iron core

    • Voltage of the system: 500 – 1100 V

    • Max. permissible tolerances: ( -10 % / +10 % )

    • Linearity: min. 0.2 mH @ 230 Aeff

    • Harmonic currents constantly / Superimposed Harmonics: 60 Ass @ 19 kHz

    • Insulation class: H

    • Cooling: AF

    • Protaction rating: IP65/66

    • Rated voltage for insulation: 1200 Vdc

    • Test voltage: 3.5 kV (50 Hz, 60 s)



  • NTT LD-DH 100

    Directly cooled surge current choke

    NTT LD-DH 100
    • Nominal Voltage: 3000 V
    • Rated current: 500 - 2500 A

    The current limiting inductor limits the short-circuit current in a bridge circuit. Thus, the intermediate circuit is protected and prevents the destruction of the connected semiconductor devices. Usually IGBT‘s.



    • According to: EN 60076-6

    • Test voltage: 12kV

    • Overload: 1,5 x INenn 1 min / h

    • Climatic categorie: DIN IEC 68 Teil 1 25/085/21


     


    Typical applications



    • Drive technology

    • Wind energy

    • Train technology



  • NTT MD 953

    Liquid-cooled three-phase mains choke 8% Uk

    NTT MD 953
    • Nominal Voltage: 400 V
    • Rated current: 200 - 1200 A
    • Inductance: 0,012 - 0,074 mH

    Watercooled chokes are available are available with ingress protection ratings IP00 to IP65. REO can utilise several methods of water cooling these components. This provides controlled conduction of heat losses, ensuring that the local environment is not heated. Water cooling ensures that component temperatures are greatly reduced, reducing component stress and increasing product life. REO technology provides excellent heat distribution, preventing the emergence of so-called hot spots.



    • Winding material : Aluminum

    • Insulation class: F

    • Cooling medium: Water/Glycol (70/30 %)

    • Max. coolant inlet temperature.: 50° C

    • Flow rate: min. 3,6 l/min.

    • Pressure drop: <0,5 bar


     


    Typical applications



    • AFE Drives



  • NTT UI114-50

    REO TSS choke with iron core

    NTT UI114-50

    As a passive inductive component in power supplies and in power electronics, the buck-converter choke is used for attenuating undesirable frequencies or for saving and storing energy.


    The term buck-converter choke indicates the complete ready-for-use unit containing the choke, air cooling, mounting and connections. The chokes are available with different cores, which enables individual selection depending on the requirement of the application. In addition to iron-based cores, chokes with cores of amorphous alloy are becoming more common, in the form of toroidal cores, cut strip-wound cores or special custom solutions.


    The use of amorphous materials offers an exceptional combination of high satur­ation flux density (1.56 T) and a high permeability. In addition to the high temperature class, further features of amorphous alloy include low hysteresis and eddy-current losses, suitability for the medium-frequency range (<20 kHz) and use for high powers up to 500 kVA.



    • Type of choke: Up/Buck converter choke with iron core

    • Voltage of the system: 500 – 1100 V

    • Max. permissible tolerances: ( -10 % / +10 % )

    • Linearity: min. 0.2 mH @ 230 Aeff

    • Harmonic currents constantly / Superimposed Harmonics: 60 Ass @ 19 kHz

    • Insulation class: H

    • Cooling: AF

    • Protaction rating: IP65/66

    • Rated voltage for insulation: 1200 Vdc

    • Test voltage: 3.5 kV (50 Hz, 60 s)



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    Transportation Converter Solutions
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    Transportation Converter Solutions

    Efficient components from REO
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    Air chokes Product catalogue
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    Air chokes Product catalogue

    Product catalogue REO air chokes
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    Components for railway applications catalogue
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    Components for railway applications catalogue

    Product catalogue: REO components for railway applications
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    Chokes overview
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    Chokes overview

    The product range at a glanee
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    Liquid-cooled components
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    Liquid-cooled components

    Liquid-cooled components The product range at a glance
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    REO chokes with high protection ratings
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    REO chokes with high protection ratings

    REO chokes with high protection ratings Fully encapsulated REO chokes
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