News & Solutions-Remote cable anti-rat and anti-lightning solution
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Remote cable anti-rat and anti-lightning solution
Release Date: 2021-08-18

Cable rat-proof lightning protection problem has been concerned by the industry, the pull cable is no exception, with the growing popularity of 4G network, outdoor coverage of the pull cable is expanding. Because the remote optical cable is used to connect the distributed base station with optical fiber, 100-300 meters to the distance between the base station and the office, which will avoid the damage of rats and lightning. Therefore, the rat and lightning protection of cable is very key. However, it is also more complicated to combine rodent and lightning protection functions.

A common anti-rodent function is to place steel armoring tubes on the cable. In one design, the armoring tubes are placed inside the cable sheath, and in the other design, the armoring tubes are placed outside the sheath. However, armoring can conduct electricity, and when lightning strikes a tower, it can be picked up by cable assemblies, damaging the cables and even causing a fire.

In this regard, after years of experience analysis, we propose to put steel armored tubes in optical cable sheath, at the same time in the lightning protection component to add soft wire to lightning protection. That is, the cable skin along the radial cut a circle, and then the conductive ring into the cut position, and then the cut is covered with glue for bonding and sealing, and finally the external metal tube to protect. In this way, the high voltage arc generated by the lightning arrester is received by the steel armoring tube, generating lightning current. Rat-proof and lightning-proof Cables connect the current generated by soft wires to the ground, reducing and avoiding lightning damage to cables or devices.

Another option is to place steel shears on the outside of the cable sheath, while adding flexible wires that conduct electricity to the lightning protection component. That is, the outer layer of the cable is covered with steel armored tube, and then the conductive ring is stuck to the outside of the armored tube, and finally the outer metal tube to protect. In this way, the high voltage arc generated by the lightning protection device is received by the steel armored tube will generate lightning current, soft wire can be generated by the current into the earth, so as to reduce and avoid lightning damage to cable or equipment.

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