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Grounding of lightning protection grounding of communication tower

作者:广信通信 发表时间:2016-01-04 23:56:43 Article Source: Communications tower Author: Guangxin Communications Published: 2016-01-04 23:56:43
According to the design requirements of the communication tower, the grounding body should be buried, and the lead wires between the grounding bodies of the communication tower should be welded. The grounding body should be buried around the foundation of the communication tower. Generally, about 28 50 × 50 × 5mm angle steel grounds with a length of about 1.5 meters are buried. And connect them with a 40 × 4mm flat steel grounding body connection line. If the communication tower grounding body connection line meets the connecting beam, it should pass under it. The grounding body is buried at a depth of not less than 0.7 meters from the ground. In cold areas, it should be buried below the frozen soil layer. It should be installed in a corrosive zone as much as possible.

Communication tower grounding body angle steel and connecting material flat steel must be hot-dip galvanized, which should be the same as the tower steel, Q235 steel.

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The steel bars in the communication tower foundation pile can also be used as a part of the grounding body to connect with the ground lead-in. Two ground lead-ins should be reserved beside each tower foundation, and three ground lead-in wires should be reserved at the feeder ground (generally in the machine room). Near the feeder window) for easy use and inspection. The ground lead-in wires should be led from the middle of the grounding device. Multiple ground lead-in wires should not be led at the same contact, and should be staggered from each other.
When the supervisors inspect the laying of the grounding equipment of the communication tower, the requirements are as follows: the welding seal between the grounding body of the communication tower and the connection line must be complete, full, without obvious air holes, tightly bolted, and there must be measures to prevent loosening; There should be protective tubes when the line passes through the wall, and there must be a margin when crossing the building gap. The contact surface of the grounding lead-in joint must be completely tinned, the bolts must be strong, and there should be anti-corrosion measures. A ground wire disconnection card should be set up between the ground lead-in and the grounding bar installed inside and outside the equipment room to check the resistance of the grounding device. The disconnection card should be rust-proofed.
After the grounding decoration of the communication tower is completed, the supervision unit shall test and record the grounding resistance value together with the relevant units. The grounding resistance value shall be less than 5Ω, otherwise the grounding angle shall be added.
通讯塔 Article Tags: Communication Tower