Method is for installing a conduit network for interrupting and controlling polder pumps and involves glass fiber cables placed where possible in existing irrigation pipes

摘要

The method is for installing a conduit network for interrupting and controlling polder pumps and involves glass fiber cables placed where possible in existing irrigation pipes. The cables connect the pumps with monitoring and/or control equipment in buildings. The buildings in their outer area have cable connections. The costs for laying out the conduit network are wholly or partly recoverable by the system also being used for television signal transmission.