Linear AC mitigation anode (linear anode)
Réf. DIP-193
Linear earthing system for mitigating induced alternating currents on pipelines near HV lines. Stranded bare copper conductor and low-resistance backfill.
Description
Pipeline corrosion caused by induced alternating current is attributed to nearby HV supply lines; it can be extremely aggressive, far exceeding the normal corrosion rate of corrosive soils. One of the most popular mitigation solutions is a linear earthing system installed parallel to the pipeline. Compared with bare copper and zinc ribbons, this long-line 'cable' is a superior earthing material, providing an efficient electrical path to discharge alternating current from the pipeline to earth.
It is made of a stranded bare copper conductor enclosed in a low-resistance backfill containing corrosion inhibitors, then wrapped in a synthetic sock. The bulk density and high fixed-carbon content, combined with a guaranteed low-resistivity medium, allow a longer 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 resistance + corrosion inhibitors |
| Wrapping | Synthetic sock |
| Laying | Parallel to the pipeline |
| Strength | Longer service life than bare copper / zinc ribbons |
Documentation
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Documentation
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