When galvanized ladder bridge is used in power facilities, how to consider its conductivity and electromagnetic compatibility?
Publish Time: 2024-11-28
In the field of power facilities, galvanized ladder bridge shoulders the heavy task of personnel inspection and equipment maintenance channel construction. Its conductivity and electromagnetic compatibility are crucial and related to operational safety and efficiency.In terms of conductivity, the base material of galvanized ladder bridge is mostly carbon steel, which has a certain conductivity, but the galvanized layer will change its electrical properties. The zinc layer formed by hot-dip galvanizing is relatively pure zinc, and its conductivity is slightly inferior due to trace impurities such as iron. To ensure good conductivity, the connection of the ladder bridge components is reliable welding or bolt fastening, and the welding parts are polished and the oxide layer is removed to ensure smooth passage of current and avoid excessive resistance causing local heating, increased energy consumption and even fire hazards. During the design, the direction and grounding layout of the ladder bridge will be planned according to the voltage and current parameters of the power system, and the grounding nodes will be reasonably set. It will be connected to the earth with low-resistance grounding materials, such as copper braided belts, so that in the event of lightning strikes, leakage, etc., the current can be quickly conducted to protect the safety of personnel and equipment.In terms of electromagnetic compatibility, the electromagnetic field around power facilities is complex and changeable. As a metal structure, the galvanized ladder bridge is susceptible to electromagnetic interference and may also interfere with surrounding sensitive equipment. When selecting materials, carbon steel with low magnetic permeability is given priority to weaken the response to the alternating electromagnetic field and avoid the problem of heating and energy loss caused by induced eddy currents. The appearance design of the ladder bridge follows smooth lines, reduces sharp corners, reduces the risk of charge accumulation and electric field distortion, and suppresses the divergence of electromagnetic radiation. For parallel or cross-scenes with communication lines and electronic monitoring equipment, shielding measures will be taken to wrap the key parts of the ladder bridge with metal shielding nets to "confine" the internal electromagnetic field and block external interference "invasion", ensuring stable signal transmission and normal operation of equipment.From structure to installation details, from material selection to shielding protection, the conductivity and electromagnetic compatibility of the galvanized ladder bridge are carefully weighed to build a solid "air corridor" for power operation and maintenance, and support the safe and efficient operation of the power system.
