The connection of the expanding renewal energy e.g. offshore wind parks demands a massive net extension. Instead of overhead lines, high-voltage cables with large conductor cross-sections are laid in the ground. In order to avoid cable joint boxes the cable manufacturers produce the greatest possible lengths and supply the cable only on broad drums what means the laying with conventional trailers could not be managed.
Cable Drum Transport and Laying Trailers of the series BTT 130.80 up to BTT 201.10 can be extended hydraulically. The air suspension enables the laterally lowering of the trailer to adapt to angular standing drums on difficult ground.
The U-type design of the trailer, open at the rear, enables the mounting of a different triangle towing bar in which the hydraulic cylinders for the widening function are implemented.