Special requirements apply to connection boxes and enclosures for installed electrical technology in tunnel systems. They must be able to reliably withstand the regularly occurring loads caused by suction and pressure forces due to cars, lorries and trains passing through. At the same time, the functionality of important technical installations must be maintained in the event of a fire. Spelsberg Rapid Boxes are the suitable choice for the line and cable junction in this case. As part of a comprehensive railway project in Belgium, the products impressed thanks to their flexibility in handling and their resilience.
The Liefkenshoek Rail Link Project (LHSV), which has a 38-year duration, is one of the largest infrastructure projects ever carried out in Belgium. A railway line for freight traffic that connects two marshalling yards of the Port of Antwerp runs over a length of approx. 16.2 km. The river Scheldt as well as the canal dock have to be bridged by tunnels in this case.
ENGIE Fabricom, the company appointed with the project planning, required product solutions for the distribution and supply of consumers as well as for the provision of electrants as access points for maintenance and rescue forces. The electrical installation carried out by envie Solutions in line structure was to take place by means of uncut main cables within the tunnels.
In addition to compliance with fire protection regulations with a functional integrity class of E90, a high protection class as well as corresponding impact and breaking resistance, the on-site installers attached particular emphasis to fast installation times and low maintenance requirements.
As the only fire protection enclosure for uncut lines on the market with certification in accordance with DIN 4102-12 as well as suitability especially for tunnel installations, the Rapid Boxes fully satisfy all requirements. The system distinguished itself by its high degree of customisation during the course of the project. This primarily involved the line connection, the junction cross-sections, the adaptability of the number of terminals as well as the fuse protection of the lines and connected consumers.
Those responsible expressed their appreciation for the good cooperation with Spelsberg, which was marked by an intensive personal exchange and goal-oriented problem solving from the very first enquiry through to the delivery of the products. The Rapid Boxes passed the factory acceptance test without any complaints and thereby once again demonstrated their functionality and quality.