Transport and traffic technology

Transport & Verkehr

ComatReleco offers specialised products for the transport and traffic sector. Flame-retardant plastics and corresponding shock and vibration resistance are used, which means that our products comply with current standards (EN50155 and EN45545). Country-specific standards can usually be met but require further clarification. Check our new transportation & railway catalogue – products designed and tested to comply with relevant standards. Please contact us for further information.


Safety at level crossings – only the best solutions will do

There are still too many serious accidents at level crossings, often resulting in fatalities. Signalling systems are frequently ignored or misinterpreted if there are no barriers. It is therefore of paramount importance that level crossings are equipped with good safety systems. RGS-Bahnsicherheitstechnik GmbH specialises in level crossing safety systems and offers a range of solutions in its product range which can be adapted to the conditions in any given case. There are already more than 200 systems in operation in Switzerland. The high quality and range of functions of the ComatReleco products also play a significant part in efficient operation and effective alarm management at the RGS-Bahnsicherheitstechnik crossings. We are proud of this and happy to have the privilege of playing a key partnership role in major development processes. Product design geared to individual customer requirements is our strength.

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Experience future mobility − today

Mobility is in transition. Whereas means of transportation used to be almost exclusively equipped with a combustion engine, today more and more vehicles have alternative drive concepts. The company ETRIX AG develops electric scooters that are supplied with power using an exchangeable, durable and low-maintenance battery. This is a central component of the system and can be replaced in seconds if necessary. High-performance batteries are not harmless. Charging these highly sensitive units must be continuously monitored in order to rule out overloads and the associated risk of fire. Overloading can additionally result in a reduced service life of the battery. Therefore, all battery packs are monitored online. A suitable voltage monitoring relay is used which can be used in small and low-voltage units thanks to its broad measuring range. In case of overload, the system isolates the charging system from the grid and so ensures full operating safety.

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Safety in road tunnels

Facilities in road tunnels are always subjected to ever stricter standards and guidelines. Existing structures often must be upgraded. Special attention is paid here to the tunnel lighting. For safety reasons these must always be fully functional. In order to meet the safety requirements, the monitoring circuits exclusively use products with an appropriately high-quality standard. Groupe E, the first company that was certified for the construction of such low-voltage switching device combinations, therefore employs a current monitoring relay to monitor the lighting functionality that is tested and passed by the Federal Road Office for the use in the direct environment of road traffic. The devices continuously measure the current consumption of the lighting and register any changes. The power consumption falls if a light fixture fails. If the value falls below a certain threshold value an echo is sent to the control centre via a potential-free contact. This way corresponding status signals are generated, which promptly initiate the replacement of defective light fixtures by the service staff.

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Metro Trains – Mobility in Melbourne

The smooth running of the passenger transport is imperative in large urban areas, especially at peak times. Since the commuter trains used for this purpose often operate for many years, these are renovated not only regarding passenger comfort from time to time, but they must also be overhauled technically and updated to the newest safety standards. The Australian operator Metro Trains Melbourne is presently equipping its trains with a modern control and monitoring system. The corresponding coupling and de-coupling circuit delivers information on whether two carriages ae connected with one another. This ensures that the locking signals of the door controls really do reach the driver’s stand. This is realised by using a special contactor designed for railway applications. Its extremely compact design enables the retroactive installation in the switching cabinets of the carriages where space is very limited.

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Safety and comfort in rail traffic

The required track infrastructure must be regularly services to ensure the smooth running of passenger and freight rail traffic. To this purpose the manufacturer Autech AG combines specific track maintenance machines with conventional trucks that are approved for road use. The flexibility of the work equipment thus resulted in reduced total costs. The operating power required is made provided by a diesel unit. Consumers with large power draws are activated using a special, compactly designed contactor with a high DC-5 switching capacity. Four-pole plug-in industrial relays are used for smaller group controls. In order to further enhance the availability of the operating equipment, the sensitive outputs of the main control unit are equipped with semi-conductor coupling relays.

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Energy management on the railways

Numerous control and monitoring functions are permanently performed in the modern rail vehicles of the Stadler rail AG. For example, in the idle state, the battery voltage level must be monitored continuously using a voltage monitoring relay, in order to guarantee the independent connection of the current collector to the overhead cable network. High-availability industrial relays with long life features are used in the light and door controls to minimise the service times. Modules with a time function complement these reliable relays. Lighting tasks for the particularly sensitive field of vision of the river’s stand are solved with modern multifunction time relays which are controlled using buttons. The regulation of the heating elements in the passenger area is performed using wear-free semiconductor contactors due to the high-power consumption and cyclical activation and deactivation.

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