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Surge protection in a tunnel Protect your devices and tunnel systems against surge voltages. Our protection concepts and products protect your systems enabling fault-free tunnel operation.
The challenge
Risks of lightning strikes
Traffic tunnels need to available around the clock. Closing the tunnel or the failure of a rescue system due to surge voltages can not only cause economic loss, but also endanger human lives.
Take preventive action: surge protection significantly increases the availability of your electrical engineering systems and minimizes the risks. Monitoring the surge protective devices and with them, the power supply, makes failures predictable and maintenance operations can be planned more effectively.
Solution
Surge protection exactly where it is needed in tunnels
Tunnel tubes can be divided into various lightning protection zones, with surge protective devices installed at the transitions between zones. Having a type 1 SPD in the first control cabinet in each tube makes that section zone 1. All subsequent control cabinets become zone 2 by virtue of type 2 SPDs. The established lightning protection regulations (IEC 62305) are used for external structures (including the control room and variable traffic signs).
Effective surge protection concept for your tunnel
If an SPD is overloaded, the tunnel electrical system is no longer protected. In order to guarantee uninterrupted protection for the tunnel, intelligent components send out a notification as soon as the power limit is reached. This enables you to replace an SPD even before it fails. The tunnel operation thus remains unchanged.
Along with overvoltages, overloads and short circuits also pose a hazard for tunnel operation. Multi-channel device circuit breakers minimize this risk.
Does only one channel need to be protected? If so, the device circuit breakers in a terminal block design with a width of just 6 mm are exactly the right choice.
Your advantages
- Intelligent accessories allow surge protective devices (SPDs) that have been subjected to high loads to be identified and replaced at an early stage
- Comprehensive portfolio offering the right protection to meet every requirement
- Minimize tunnel infrastructure failures caused by thunderstorms
- Sustainably increase tunnel availability
Contact
Products
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