Diode rectifier
TracFeed® TRx

From AC to DC according to your needs

High efficiency and power density with minimal use of resources: with the TracFeed® TRx product in the TracFeed® TRA (DC 750 V) and TracFeed® TRB (DC 1 500 V) versions, we offer rectifiers for the conversion of AC to DC voltages that optimally meet the current requirements of the market. Rail operators can rely on the proven strengths of Rail Power Systems and also benefit from many new advantages.

Your advantages at a glance

  • Better use of space due to optimised design and power unit configuration
  • Higher performance as a result of larger heat sinks
  • Increased operating safety due to higher diode reverse voltage
  • Perfectly adapted to requirements thanks to extended modularity
  • High performance due to the use of state-of-the-art semiconductor technology
  • Best possible use of resources through minimised use of materials
  • Precise dimensioning means exactly the right output
  • Environmentally friendly thanks to over 95% recyclability
  • Optimal adaptability due to interchangeable hardware

The product at a glance

Design

The new rectifier groups diodes connected in parallel to form a PowerUnit (TracFeed® PU). This optimised design reduces resource consumption and the number of components required. In turn, this provides scope for a number of improvements to the interior layout, but above all it saves a considerable amount of space and the type of arrangement enables simple, time and cost-saving installation. At the same time, the performance of the TracFeed® TRx generation of RPS rectifiers has been increased compared to the previous TracFeed® GR series.

Extended modularity

The rectifier system is designed as a modular system. The PowerUnit configuration is scalable and can be easily adapted to the relevant project requirements.

Enlarged heat sinks

Despite downsizing the rectifier cabinets, the innovative design allowed the volume of the heat sinks to be increased, thereby improving the performance values.

Improved diode characteristics

Heat output was reduced by using a higher-performance diode with a better characteristic curve. This has the effect of reducing the number of diodes and the high currents in our rectifier system and, like the enlarged heat sink, helps to improve performance.

Higher diode reverse voltage

Another strength of RPS rectifiers is the higher diode reverse voltage. Reverse voltages of 2400 V are offered as standard for DC 750 V. This distinguishes RPS rectifiers from the competition, where diodes with a reverse voltage of 2200 V are offered as standard, and makes your operation safer.

Optimised use of resources

By improving the rectifier design compared to its predecessor, less material is now used. This new design has also made it possible to significantly reduce requirements, especially for copper.

Exact dimensioning

TracFeed® TRx provides standard market services and makes it possible to implement suitable offers. It makes it possible to avoid excess dimensioning in many cases, certainly as far as demand is concerned. The resulting disadvantages, including higher costs and increased space requirements, can thus be prevented.

Recyclability

In addition to comprehensive resource conservation, the new RPS rectifiers offer a very high level of recyclability.

  •  > 95% fully recyclable metals (steel, aluminium, copper)
  • < 3% thermally recyclable (e.g. insulators)
  • < 1.5% recyclable electrical waste (diodes), capacitors, cables
Limit current characteristic with protection characteristic curve

Overload relative to rated current

The illustration shows an example of the limiting current characteristic (load capacity limit values for output current ID to rated current IBD) for the rectifier, taking into account the in-line transformer and the medium-voltage supply network.

Nominal input voltage

Extendable variant: TracFeed® TRx-D

In addition to the stationary version, TracFeed® TRx is also available as a retractable version. Its design is based on the innovative concept of the stationary rectifier, but with the unique feature that the PowerUnits are installed on a switchgear truck. This ensures even easier access for maintenance work.

It is the same height and the same depth as the stationary rectifier (H: 2200 mm without ring line and without rain cover, D: 1350 mm). Despite the switchgear truck integrated in the cubicle, we managed to keep the width down to 1,000 mm with the space-saving design.

3D model of the retractable rectifier with frame, switchgear truck and control compartment

Increased safety
  • The switchgear truck carrying the power module moves behind the sealed door between the service position and the disconnected position.
  • Various optional interlocking possibilities are available to prevent incorrect manual operating actions.
  • Tried-and-tested insertion contacts ensure secure switching from the disconnected position to the service position.
  • The busbar and terminal compartment can be separated by a shutter for even better health and safety.
Potential savings
  • The disconnected position in the rectifier keeps the positive and negative poles of the rectifier separated from the operational busbar.This integrated separation function means there is no need for an incomer panel in the switchgear assembly.
  • In addition, the overall system availability can be increased by keeping an additional switchgear truck in stock with power modules in the event of a fault.
Type-tested design
  • The retractable version of the rectifier is type-tested for 12-pulse operation and complies with the applicable standards.
  • Thanks to the improved heat sink design and the increased performance of the power units, reliable and efficient performance is ensured.

Your solution from a single source

TracFeed® TRx stands for efficiency and power density with minimal use of resources and is a reliable and proven rectifier that has been optimally adapted to the needs of the market. Innovative improvements such as the high-quality design, enlarged heat sinks, an improved diode characteristic curve and optimised use of resources characterise this rectifier. As a system supplier with over 130 years of experience, we not only supply the product, but also take care of planning, installation, commissioning and maintenance on request.

Your contacts

Head of International Sales

Ralf Klinge


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Head of Sales Germany Traction Power Supply

Holger Ehms


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Product Manager DC

Udo Snaga


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How can we help you?

Please send us your enquiry – we will get back to you as soon as possible.

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