Linear AC mitigation anode
Réf. DIP-190
Linear earthing system for mitigating induced alternating currents on pipelines near HV lines. Stranded bare copper conductor and low-resistivity backfill.
Description
Pipeline corrosion caused by induced alternating current is due to the presence of nearby HV lines; it can be extremely aggressive, far exceeding the normal corrosion rate of corrosive soils. One of the most widely used mitigation solutions is a linear earthing system installed parallel or perpendicular to the pipeline. Compared with bare copper and zinc ribbon, this long-distance 'cable' is a superior earthing material, providing an efficient electrical path to discharge alternating current to earth.
It is made of a stranded bare copper conductor, surrounded by a low-resistance backfill containing corrosion inhibitors, then wrapped in a synthetic sheath. The high bulk density and high fixed-carbon content, combined with a guaranteed low-resistivity medium, allow a longer earthing service life at a controlled cost.
Caractéristiques techniques
| Type | Linear AC mitigation anode (linear earthing) |
| Use | Mitigation of induced AC (pipelines near HV lines) |
| Conductor | Stranded bare copper |
| Backfill | Low resistivity + corrosion inhibitors |
| Sheath | Synthetic |
| Laying | Parallel or perpendicular to the pipeline |
| Strength | Longer service life than bare copper / zinc ribbon |
Documentation
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Documentation
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