Pipelines are the lifeline of our industrialised society. Their reliable functioning is essential for many supply and production systems. Increased bundling of transportation and energy routes increases inductive and ohmic interference on pipelines. As a result, voltage can occur on and damage pipelines. This may present a hazard to people, material assets and the environment, often resulting in high repair costs. Interference voltages can be caused, for example, by nearby high-voltage transmission lines and railway lines, but also by earth faults and lightning currents. The screwable earth rod from DEHN is the solution for safe earthing. The very low earth electrode resistances achieved with it reduce the corresponding voltages on the pipelines to a minimum. Interference voltages are safely discharged, thus protecting pipelines and people.
Safely earthing pipelines - with screwable earth rods from DEHN
By penetrating deeper earth layers with constant earthing resistances, the screwable earth rod ensures a high-quality and safe earth-termination system that is made to last. With the screwable earth rods, DEHN offers a simple, variable and safe solution for drilled earth-termination systems up to a depth of 99 m. This means that the very low earthing resistances (1 - 2 Ohm) required for pipelines, for example, can be achieved.
The screwable earth rod is the ideal solution and can be used when normal earth rods or steel earth rods are not suitable. Variable earth electrode lengths enable optimum installation with a drill crane. The screw technology allows quick connection and thus quick insertion into the ground.
Tested and fully galvanized connections protect the screwable earth rod from corrosion. Time-consuming protection of these connection points with heat-shrinkable sleeves is no longer necessary. All cross-sections of the conductor and earthing materials meet the specifications of
DIN EN IEC 62561-2, DVGW GW 22 and VDE 0101-2. Of course, DEHN also offers a complete range of products from earth electrodes to connection and sealing technology as well as other necessary accessories.
In order to maintain the functionality of pipelines and thus to ensure optimal operation, anti-corrosion measures and other protection measures are necessary in addition to the all-important earthing. From simple isolating spark gaps for hazardous areas for the protection of insulating joints, to robust, powerful decouplers for pipelines subjected to high-voltage interference, right through to intelligent decoupling devices such as VCSD (Voltage-controlled smart decoupling device) that can be integrated into monitoring and SCADA systems: DEHN is a one-stop shop for complete solutions and extensive services.
Petra Raab ⎟ Head of External Communications
Trade Press