How to determine whether to use copper busbars or copper wires in a switchgear?

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In a switchgear, usually multiple factors need to be considered comprehensively to decide whether to use copper busbars or copper wires. The following is a detailed analysis:

### Current - carrying capacity
- **Copper busbars**: They have a large cross - sectional area and good heat - dissipation performance, enabling them to carry a large amount of current. In high - voltage and high - current switchgears, such as the main switchgear in a substation, when the current load exceeds 1000A or even higher, copper busbars are usually given priority to ensure safe and reliable current transmission and avoid excessive heating caused by excessive current.
- **Copper wires**: Generally speaking, under the same cross - sectional area, the current - carrying capacity of copper wires is slightly smaller than that of copper busbars. They are suitable for circuits with relatively small currents, such as the control circuits and protection circuits inside the switchgear. The current in these circuits usually ranges from a few amperes to several tens of amperes. Using copper wires can meet the current - carrying requirements and is more economical and flexible.

### Mechanical strength
- **Copper busbars**: They have high mechanical strength and good rigidity, and can withstand large external forces and the electrodynamic forces generated during short - circuits. In some harsh working environments or in situations where high mechanical stability is required, such as switchgears in industrial sites, which may be affected by external forces such as vibration and impact, using copper busbars can ensure the stability and reliability of the connections.
- **Copper wires**: Compared with copper busbars, they have relatively lower mechanical strength but better flexibility. In connection parts that need to be moved or bent frequently, such as the connections between movable switchgear components, or in places where space is limited and flexible wiring is required, copper wires can better meet these requirements.

### Installation space
- **Copper busbars**: They have a relatively large volume and require more installation space. When the internal space of the switchgear is spacious, using copper busbars will not cause space - related difficulties, and it is beneficial to heat dissipation and the neat arrangement of wiring. For example, in large - scale switchgears in power distribution rooms, where the space is relatively abundant, it is suitable to use copper busbars for connection.
- **Copper wires**: They have a relatively small diameter, occupy less space, and are flexible for wiring. For some compact switchgears or switchgears with complex internal structures and limited space, copper wires can be more easily wired and connected, and can better adapt to the requirements of narrow spaces.

### Cost factors
- **Copper busbars**: The raw material cost and processing cost are relatively high, especially when using large - sized and high - precision copper busbars, the cost will increase significantly. However, in the case of high - current and long - term operation, due to their high reliability and long service life, the comprehensive cost may not be high.
- **Copper wires**: The cost is relatively low, especially in the case of small - current and short - distance transmission. Using copper wires can reduce costs. For some cost - sensitive projects with limited budgets, or for switchgears used temporarily or for short - term operation, copper wires may be a more suitable choice.

### Electrical performance
- **Copper busbars**: They have a relatively small resistance. During high - current transmission, they can reduce power loss and voltage drop, and are suitable for main circuits with high requirements for electrical performance and short transmission distances.
- **Copper wires**: Although their resistance is slightly larger than that of copper busbars, they have an advantage in insulation performance, and the skin effect is relatively less obvious. They are suitable for some control circuits and signal circuits with strict insulation requirements and long transmission distances.#tiktokrefugee#cat#tiktokban#china#抖音难民#IngenieríaEléctrica #DiseñoDeTransformadores #DiseñoDeInductores #TecnologíaDeTransformadores #IngenieríaEléctrica #EnvolturaFoil #FabricaciónDeTransformadores #EficienciaEnergética #DiseñoEléctrico #EnvolturaDeTransformadores #InnovaciónEnIngeniería #TecnologíaDeTransformadores #EnvolturaDeCobre #TransformadoresDeEnergía #TécnicasDeIngeniería #ComponentesEléctricos #EnvolturaEficiente #TransformadoresDeEnergía #FabricaciónDeTransformadores #ComponentesEléctricos #IngenieríaExplicada