DROMEC Winches pull-in system
at WIND Energy Hamburg
The pull-in system is used to pull power and data cables from the vessel into the wind turbine. It’s a complex tool specifically developed by DROMEC Winches for this purpose. You can see it live in Hall B6, booth 540. Visit us!
Constant Tension
Before installing the wind turbine on the platform, the pull-in operation takes place. The cables are pulled from the vessel through the seabed onto the platform using the pull-in system under Constant Tension. This means the cable is always kept at a predetermined tension, even in the event of unexpected increases or decreases in cable force, preventing cable overload. This special tool has a nominal pulling force of 10T. The force is applied through friction between the rope and a special capstan head. By adjusting the number of windings in combination with a tensioner, the pulling force is ensured up to a holding force of 12T.
Automatic Tensioning
The system operates with automatic tensioning. A tensioner synchronized with the capstan head ensures there is always sufficient tension between the tensioner and the capstan. This guarantees the pulling force through the capstan without requiring a person to continuously hold the slack end. The system is electrically powered, very compact, with a low weight of 550 kg. Without the detachable tensioner, it weighs 475 kg. Once the operation is complete, the system is moved to the next wind turbine platform.
Specific variations have been designed for different continental regions. For instance, additional safety standards such as Loler and Puwer are required in the waters of the United Kingdom.
Contact DromecCees Drost, CEO DROMEC, comments,
“This compact pull-in system is a user-friendly tool that can be installed on any platform for pull-in operations. The combination of low weight with high force, using advanced control software, is a real time-saver for the customer. The system can be used both in a standing and hanging position. Several improvements have been made for the new series, such as the nominal pulling force and the hard-anodized capstan head, which is more resistant to corrosion. The frame is also more user-friendly, with an integrated lifting eye and additional guide bracket, allowing the cable to be wound on and off at a 70-degree angle.”