The sea lock in Krammersluis near Zeeland in the Netherlands is a double lock with a length of 280 metres and a width of 24 metres. It regulates through shipping traffic 24 hours a day and can therefore be described as a critical point in the infrastructure on site. The operators of the facility must therefore be able to trust that the lock will operate reliably and continuously. Of course, this also includes the energy supply system, which is a critical element of the system that makes orderly operation possible in the first place and supplies the pumps, locking system and lighting with power.
In the past, a tender system was used here, which could no longer fulfil the high performance requirements of the system over time. In concrete terms, the cables proved to be permanently unstable, as evidenced by twisted and broken cables. This finally forced the operator to rethink.