山东电气成套中，高压开关柜铜排怎么选？按电流对照就行

　　How to choose copper bars for high-voltage switchgear in Shandong Electric's complete set? Just compare with the current

　　在山东电气成套设备的配置中，变压器作为电力转换的核心部件，其配套的高压进线开关选型直接关系到设备和运行稳定性。不少企业采购或运维山东电气成套设备时，都会困惑：多大容量的变压器该用负荷开关，多大的该用断路器？负荷开关与熔断器又适配哪些情况？其实答案很明确，核心就是看变压器的容量大小。今天就专门围绕这个问题科普，帮大家理清不同容量变压器对应的开关选型逻辑。

　　In the configuration of Shandong Electric's complete set of equipment, transformers are the core components of power conversion, and the selection of their matching high-voltage incoming line switches directly affects the safety and operational stability of the equipment. Many companies are confused when purchasing or operating complete sets of equipment from Shandong Electric: what capacity transformer should use a load switch, and what size should use a circuit breaker? What are the suitable situations for load switches and fuses? The answer is actually very clear, the core is to look at the capacity of the transformer. Today, we will focus on this topic to popularize science and help everyone clarify the switch selection logic corresponding to transformers of different capacities.

　　先给大家解释下为啥按电流选型是核心。高压开关柜的铜排主要负责承载和传递电流，不同工况下的高压柜，额定电流需求不同。如果铜排规格选小了，承载电流时会过度发热，不仅影响导电效率，还可能因过热损坏绝缘层，引发短路等事故；如果选大了，虽然能满足电流需求，但会增加设备成本，造成材料浪费。所以对山东电气成套设备来说，铜排选型的关键就是“精准匹配额定电流”。

　　Let me explain why selecting based on current is the core. The copper bars of high-voltage switchgear are mainly responsible for carrying and transmitting current. The rated current requirements of high-voltage switchgear vary under different operating conditions. If the copper bar specification is selected too small, it will generate excessive heat when carrying current, which not only affects the conductivity efficiency, but may also damage the insulation layer due to overheating and cause safety accidents such as short circuits; If chosen too large, although it can meet the current demand, it will increase equipment costs and cause material waste. So for Shandong Electric's complete equipment, the key to selecting copper bars is to "accurately match the rated current".

　　下面说说10kV高压柜的铜排选型标准——这是山东工业场景中常用的高压柜类型，对应的铜排规格已经形成了成熟的行业标准，大家直接对照选用即可。具体来看，不同额定电流对应的铜排规格如下：当额定电流为630A时，选择30×3mm的铜排；额定电流800A时，匹配40×4mm的铜排；如果是1000A的额定电流，50×5mm的铜排是合适的选择。

　　The following focuses on the selection criteria for copper bars in 10kV high-voltage cabinets - this is the most commonly used type of high-voltage cabinet in Shandong's industrial scene, and the corresponding copper bar specifications have formed mature industry standards. You can directly compare and select them. Specifically, the specifications of copper bars corresponding to different rated currents are as follows: when the rated current is 630A, select a 30 × 3mm copper bar; When the rated current is 800A, match a 40 × 4mm copper bar; If the rated current is 1000A, a 50 × 5mm copper bar is a suitable choice.

　　继续往下对照：额定电流1250A时，对应的铜排规格是60×6mm；1600A的额定电流，需要选用80×6mm的铜排；当额定电流达到2000A，就该选100×8mm的铜排；2500A的额定电流，匹配120×10mm的铜排；还有额定电流3150A的情况，单块铜排已经难以满足需求，这时建议采用2片80×8mm的铜排并列使用，这样能保证电流平稳传递，避免局部过热。

　　Continuing to compare: When the rated current is 1250A, the corresponding copper bar specification is 60 × 6mm; for the rated current of 1600A, an 80 × 6mm copper bar needs to be selected; When the rated current reaches 2000A, a 100 × 8mm copper bar should be selected; Rated current of 2500A, matched with 120 × 10mm copper bars; In the case of a rated current of 3150A, a single copper bar is no longer sufficient to meet the demand. In this case, it is recommended to use two 80 × 8mm copper bars in parallel to ensure smooth current transmission and avoid local overheating.

　　这里要给大家补充一个关键建议：铜排的材质优先选T2紫铜。为啥T2紫铜？因为T2紫铜的纯度高，导电性能好，电阻小，在传递电流时产生的热量少，能更好地适应高压开关柜的工作环境。而且T2紫铜的力学性能稳定，耐腐蚀性强，使用寿命长，能降低山东电气成套设备的后期维护成本。反观其他材质的铜排，要么导电性能不足，要么稳定性差，很难满足高压柜长期稳定运行的需求。

　　Here is a key suggestion to add: T2 purple copper should be the preferred material for copper bars. Why recommend T2 copper? Because T2 copper has high purity, good conductivity, low resistance, and generates less heat when transmitting current, it can better adapt to the working environment of high-voltage switchgear. Moreover, T2 copper has stable mechanical properties, strong corrosion resistance, and a long service life, which can reduce the maintenance costs of Shandong Electric's complete equipment in the later stage. On the other hand, copper bars made of other materials either have insufficient conductivity or poor stability, making it difficult to meet the long-term stable operation needs of high-voltage cabinets.

　　可能有朋友会问，除了电流和材质，还有哪些因素会影响铜排选型？其实对山东电气成套设备的常规高压开关柜来说，按电流选规格、按需求选T2紫铜材质，基本就能满足使用要求。如果是特殊场景，比如高温、高湿度或有腐蚀性的环境，可能需要对铜排进行额外的防腐、绝缘处理，但核心的规格选型逻辑还是以电流为核心。

　　Some friends may ask, besides current and material, what other factors can affect the selection of copper bars? In fact, for the conventional high-voltage switchgear of Shandong Electric's complete equipment, selecting specifications according to current and T2 copper material according to demand can basically meet the usage requirements. If it is a special scenario, such as high temperature, high humidity, or corrosive environment, additional anti-corrosion and insulation treatment may be required for the copper bars, but the core specification selection logic is still based on current.

　　给山东本地企业的采购和运维人员提个实用建议：在选用高压开关柜铜排时，先明确高压柜的额定电流，再对照上面的标准选择对应的铜排规格，同时确认材质为T2紫铜。如果对选型有疑问，比如不确定特殊工况下的选型方案，建议咨询的山东电气成套设备厂家，他们会根据具体的使用场景和技术需求，给出精准的选型建议。另外，在铜排安装过程中，也要注意安装规范，避免因安装不当影响导电性能。

　　A practical suggestion for procurement and operation personnel of local enterprises in Shandong: When selecting copper bars for high-voltage switchgear, first clarify the rated current of the high-voltage cabinet, then select the corresponding copper bar specifications according to the above standards, and confirm that the material is T2 purple copper. If you have any questions about the selection, such as uncertainty about the selection plan under special working conditions, it is recommended to consult a professional Shandong Electric complete equipment manufacturer. They will provide accurate selection suggestions based on specific usage scenarios and technical requirements. In addition, during the installation of copper bars, attention should also be paid to installation specifications to avoid affecting the conductivity performance due to improper installation.

　　总结下来，山东电气成套设备中高压开关柜的铜排选型，核心就是“按电流定规格”，10kV高压柜有明确的对照标准，材质优先选T2紫铜。掌握这个简单的选型逻辑，就能精准匹配铜排，既保障高压开关柜的稳定运行，又能合理控制成本。如果大家还想了解铜排的折弯工艺、母排的搭接要求，或者成套设计相关的知识，也可以进一步咨询的电气成套技术人员。

　　In summary, the core of selecting copper bars for high-voltage switchgear in Shandong Electric's complete equipment is to "determine specifications according to current". There are clear reference standards for 10kV high-voltage cabinets, and T2 purple copper is preferred as the material. By mastering this simple selection logic, one can accurately match copper bars, ensuring the safe and stable operation of high-voltage switchgear while also reasonably controlling costs. If you still want to learn about the bending process of copper bars, the overlapping requirements of busbars, or related knowledge of complete set design, you can further consult professional electrical complete set technicians.

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