For more than 40 years, Beele Engineering has been synonymous with innovative rubber technology-based sealing solutions. A recent example of this was the company’s development of special clamping strips whereby three high-tension cables are clamped together into a trefoil clamp developed by LOS Gruppen www.los-gruppen.no .This RockRoller® is used in environments where high voltage power needs to be transported across (longer) distances in a smart, eco-friendly and energy-efficient way, using drill holes or pipes.

The RockRoller® is currently being used in Norway as an effective alternative to high-tension pylons in addition to short circuit protect the cables. The Rockroller is a metal clamp consisting of three sections that are triangular when assembled. The triangular metal clamp has metal wheels on the outside which enable the clamp and cables to be pulled. To allow the high-tension cables to be pulled over long distances, a RockRoller® is fitted every 50 to 200 cm, depending on the distance being bridged.

Beele Engineering’s NOFIRNO rubber is used to secure the cables during pulling. The specially formed strips are placed in the clamp parts and push the three high-tension cables together. The shape and hardness of the clamping strips are designed to push the cables together in such a way that they are not distorted or damaged.

‘Pulling’ high-tension cables with the aid of the Rockroller is an innovative concept involving threading high-tension cables through boreholes rather than across pylons. This allows several kilometres to be covered.

The method is already being used in Norway and is resulting in a more efficient transportation of energy (fewer losses and short distances), lower maintenance costs, more limited impact on the environment and more stable operating conditions.

NOFIRNO

The clamping strips for the RockRoller® are made from Beele Engineering’s NOFIRNO. The hardness of the material is matched precisely to the application. This special hardness is combined with a high level of durability and sustainability and it is easy to work with. The NOFIRNO material is equipped with a special profile that creates an optimum grip between the cable, clamping strip and clamp.