DEHN protects railway technology
DEHN protects the railway infrastructure

Avoid system downtime and disruptions in the railway infrastructure

The smooth running of railway technology depends on the proper functioning of a variety of highly sensitive, electric and electronic systems.

The permanent availability of these systems is, however, threatened by lightning strikes and electromagnetic interference. As a rule, damaged and destroyed conductors, interlocking components, modules or computer systems are the root cause of disruptions and time-consuming troubleshooting. This, in turn, means late trains and high costs.

Reduce costly disruptions and minimise system downtime... with a comprehensive lightning and surge protection concept tailored to your special requirements.

Reasons for disruptions and damage

These are the most common reasons for disruptions, system downtime and damage in electric railway systems:

  • Direct lightning strikes
    Lightning strikes in overhead contact lines, tracks or masts usually lead to disruptions or system failure.
  • Indirect lightning strikes
    Lightning strikes in a nearby building or the ground. Overvoltage is then distributed via cables or inductively induced, damaging or destroying unprotected electronic components.
  • Electromagnetic interference fields
    Overvoltage can occur when different systems interact due to their proximity to one another, e.g., illuminated sign systems over motorways, high-voltage transmission lines and overhead contact lines for railways.
  • Occurrences within the railway system itself
    Switching operations and triggering fuses are an additional risk factor because they can also generate surges and cause damage.

Electronic and digital interlockings

Always in time - prevent delays and cancellations, effectively protect signalling and control systems.

Signalling and control systems are the brain and nervous system of railway transportation systems. Time and again lightning strikes lead to the failure of individual components in electronic interlockings causing train delays and cancellations.

Prevent system failure and breakdowns by implementing a comprehensive protection concept.

Level crossing safety systems

Focus on safety: make sure that level crossings are fully operational - even during thunderstorms.

Level crossings are neuralgic points which require maximum reliability. Take advantage of a practical safety concept, developed in collaboration with manufacturers of level crossing safety systems and the DB NETZ AG.

GSM-R transmitting and receiving systems

Optimum radio coverage thanks to maximum system availability.

Due to their exposed location, radio masts for GSM-R systems are particularly susceptible to lightning strikes. Protect people in the vicinity of the system and optimise system availability with a professional lightning and surge protection concept.

Electric point heaters

Disturbance-free rail traffic - even in ice and snow.

It is essential that electric point heaters always function properly. Protect the complex system of point heaters against damage resulting from lightning strikes, surges and electromagnetic interference.

Direct current railway systems

Safely on the way: personal protection is the top priority.

The constant growth of urban centres worldwide means that direct current railway systems like trams and urban and underground railways are becoming more and more important. Commuters and travellers on platforms, at stops and in stations must be kept safe. Even in storms.

Safety equipment and live working

Safe working on electric railways

Personal protection is the number one priority. The DEHN safety equipment portfolio offers the right safety devices, whether for DC or AC applications or frequencies of 50 or 16.7 Hz.

Impulse current laboratory

DEHN offers engineering and test services for railway systems in the impulse current laboratory at the DEHN Test Centre.

  • Tests on prewired connection units for protecting electrical and electronic systems
  • Lightning current tests on signalling system components, low-voltage distribution boards and system cabinets

Make sure that your systems function even under extreme conditions. This improves your competitiveness.

Read more about "testing the lightning current capability of components" here:


DEHN protects the Gotthard rail link

A reliable power supply is imperative for the safe operation of the tunnel. It runs through the entire tunnel like veins penetrating deep into the mountain and must be able to withstand the effects of lightning currents and surges.

The entire 50 Hz power supply, from the main distribution boards to the sub-distribution board and including the 178 cross passages, is protected.

The energy coordinated arresters from DEHN were selected due to the stringent quality requirements.

DEHN protects level crossing safety systems

PINTSCH BAMAG Antriebs- und Verkehrstechnik GmbH is today one of the leading manufacturers of safety-related products for rail- and waterways. It goes without saying that their safety standards are high. Across the globe, level crossings are the neuralgic points of railway systems. Their safety and the coordination of rail and road traffic require the greatest possible reliability and straightforward operation. At the same time, investment and maintenance costs should be low.

In order to ensure this is the case in thunderstorms, too, PINTSCH BAMAG employs DEHN components to protect its railway signalling technology.

DEHN protects signalling systems

The 533 km high-speed line of the TCDD between Ankara and Istanbul has been equipped with a professional protection concept.

This comprises an isolated external lightning protection system with HVI technology for the signalling and control buildings and comprehensive surge protection for both the power supply and the actual signalling and control systems.

In particular, the protection of remote-fed audio-frequency track circuits was optimised.


Partner to railway technology

DEHN has been at home in many areas of railway technology for decades now and continually strives to make systems and applications safer and more efficient.

  • AREX WB Group
    AREX Sp. z.o.o. - Gydnia Poland
  • BBR Verkehrstechnik
    BBR Verkehrstechnik GmbH, Braunschweig
    ESA Elektroschaltanlagen Grimma GmbH
  • Max Bögl
    Firmengruppe Max Bögl, Neumarkt i. d. OPf.
    PINTSCH ABEN B.V. Maarssen NL
    PINTSCH BAMAG Antriebs- und Verkehrstechnik GmbH, Dinslaken
  • RPS Rail Power Systems
    Rail Power Systems GmbH, Munich
    Scheidt & Bachmann GmbH, Mönchengladbach
  • SIEMENS - Ingenuity for life
    Siemens Mobility GmbH, Braunschweig
    SPITZKE SE, Großbeeren
    STRABAG Rail Fahrleitungen GmbH, Berlin
  • Türkiye Cumhuriyeti Devlet Demiryollari (TCDD)
    State Railway Company Türkiye Cumhuriyeti Devlet Demiryollari (TCDD)

Many renowned companies in the railway infrastructure sector put their trust in sophisticated DEHN technology. Some can be seen here.


Have you got questions? Contact us.

Team Railway Technology

Phone: +49 9181 906 1740

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