Products

The stray current drainage device for severe interference is a dedicated drainage equipment for buried pipelines along high/ultra-high voltage transmission lines, electrified railways and subways, developed for scenarios with strong AC-DC mixed interference.It adopts an integrated design of multi-stage parallel drainage, spark gap lightning protection and copper busbar heat dissipation, and is equipped with fail-safe short-circuit fault protection.This product addresses the drawbacks of traditional solid-state decouplers including low current capacity, poor durability and insufficient lightning protection. It effectively isolates cathodic protection potential and discharges stray currents to ensure the safe operation of pipelines.

The Polarized Drainage Device is a solid-state drainage equipment dedicated to mitigating severe stray current interference on buried steel pipelines. It is specially designed for high-current interference scenarios such as high-voltage transmission lines and electrified railways. Adopting a multi-stage parallel circuit and copper busbar heat dissipation structure, the product integrates DC decoupling, AC earthing and lightning protection functions. It features fault short-circuit protection, super high current carrying capacity and low residual voltage. As a replacement for conventional solid-state decouplers, it can effectively eliminate accelerated pipeline corrosion caused by stray currents and ensure stable operation of the cathodic protection system.