Impressed current cathodic protection of telephone cable

The impressed current cathodic protection is mainly used on the cable or the steel sleeve through the cable. They are located outside the dense area of buildings, where it is possible to build large anode devices without harmful effects on other pipelines. In densely populated areas, deep well anodes or shallow buried anodes are often used in cathodic protection with forced current.

The auxiliary anode of small forced current protection device can be installed close to the cable or cable conduit. However, they can also be made into ribbon anodes and inserted into open cable ducts, which are made of cement blocks prefabricated into conduit shapes to reduce interference with their pipes.

Long distance cables with metal sheaths should be cathodic protected, as the soil along the hand will affect the formation of extended corrosive cells. The lead clad cables near the cathodic protection pipeline must be connected with the cathodic protection device of the pipeline, otherwise they will be interfered by the protection current.

The telephone cable connected to the telephone tower is very vulnerable to lightning damage. In order to avoid lightning damage, these cables are either enclosed in galvanized steel sleeves or installed with lightning protection measures. When galvanized steel casing is used, each section of pipe must be connected with waterproof sealing threaded sleeve. Each sleeve must be connected with low resistance, otherwise the longitudinal resistance of the pipeline will increase, which will make the pipeline unable to implement cathodic protection. Both ends of the casing must be waterproof sealed.

If the casing is not laid in non frozen soil layer, cathodic protection must be implemented according to soil conditions. If water seeps into the corrosion defect of the pipe, the water will form ice and the cable will be damaged under the pressure of ice.

Shandong Linyi Bosi conductive materials Co., Ltd. is a high-tech enterprise specializing in the production of MMO flexible anode, conductive polymer flexible anode and titanium coated anode, mainly providing cathodic protection technology, engineering design, installation and technical services. 

Tel: +86 17568010262，0539-3712117.