YH-DPD Polar drainage device is apipeline DC stray current interference protection product. It can be used for protection against static or dynamic DC stray current interference caused by subway, light rail, mine car, other cathodic protection systems, UHV DC transmission systems, etc.

 

This product features a low direct current start-up voltage and possesses certain alternating current discharge capabilities, along with a strong capacity for safeguarding against fault currents and lightning surge protection. It adopts metal shell, fully waterproof sealing structure, to satisfy complex field environmental conditions, and it is easy to install and maintain on site.