Conduction Function: Copper has excellent electrical conductivity, second only to silver. As a current carrier, copper busbars efficiently conduct electrical energy from the power source to the user equipment. During power transmission, its relatively low resistance effectively reduces energy loss, ensuring stable power system operation. For example, in substations, copper busbars connect electrical equipment of different voltage levels, allowing current to flow smoothly and facilitating energy distribution and transmission.
Diverting Function: In complex electrical systems, it is often necessary to distribute the main current into multiple branches. Copper busbars can be rationally branched according to actual needs, evenly distributing the total current to various user equipment or circuits. For example, in a distribution box, copper busbars can deliver the main incoming current to each branch switch according to different load requirements, ensuring the normal operation of equipment in each branch.
Collecting Function: Conversely, in some cases, it is necessary to collect current from multiple branches. Copper busbars excel at this task, collecting current from different directions and devices, and then transmitting it to a specific location for unified processing or transmission. For example, in the power supply system of a large factory, the current generated by the electrical equipment in each workshop is collected on a copper busbar through its respective line, and then transmitted to the main distribution room for metering and management.
Grounding Function: Copper busbars can also be used as grounding conductors. In electrical equipment, to ensure the safety of personnel and equipment, it is necessary to reliably connect the metal casing of the electrical equipment to the earth, i.e., grounding. Due to its good conductivity and mechanical properties, copper busbars are often used as grounding mains, connecting the casing of electrical equipment to the grounding electrode. When a fault such as leakage occurs in the equipment, the current can quickly flow into the earth through the copper busbar, preventing electric shock to personnel and damage to equipment.