— SUCCESS STORY Medium-voltage solution to the Rantatunneli project Tampere, Finland Reliable and secure power supply in Finland’s longest tunnel with fast and accurate communication. Project at a glance Operator: Liikennevirasto, the Finnish Transport Agency Segment: Transport and infrastructure ABB products: Air-insulated switchgear UniSec, Gas-insulated switchgear SafePlus, Relion® 615 protection and control relays, Combi sensors, MicroSCADA Pro, Remote Terminal Units RTU520, AFS660 switch Customer challenge A new tunnel was needed to contribute to the development of the city of Tampere and to improve traffic flow and safety. Building and maintaining tunnels and their electric network come with many challenges, one of which is extremely high demands for uninterrupt

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