低压状态下的抽屉柜拥有更方便合适的总体架设构造，配合美观的布局方式，使安装过程更加简单便利。在市场上，抽屉式低压开关柜受热捧。低压抽出式开关柜没有刀开关，缩小了元件安装的空间，柜内增加了回路数，相同规格的抽屉可以互换使用，减少了停电时间，在低压成套设备中应用广泛。各种性能都超过了固定柜。

The drawer cabinet under low voltage condition has a more convenient and suitable overall erection structure, and the beautiful layout makes the installation process more simple and convenient. Drawer-type low-voltage switchgear is popular in the market. The low-voltage draw-out switch cabinet has no knife switch, which reduces the space for component installation, increases the number of loops in the cabinet, and the drawers of the same specification can be interchanged, reducing the power outage time, and is widely used in low-voltage complete equipment. All kinds of performance have exceeded the fixed cabinet.

MNS低压抽屉柜内部功能和单元结构都存在差异。热能对于其发挥的配电性能会造成很大影响，MNS低压抽屉柜表现出的优良抗热性能展现了其优良的稳定属性，在特殊情况下，电弧出现意外故障此时便彰显了预设硬件对于该情况的防护能力，所以，在设计时，预设机构对于性能有着这些影响。

There are differences in internal functions and unit structures of MNS low-voltage drawer cabinets. Thermal energy will have a great impact on its power distribution performance. The excellent heat resistance performance of MNS low-voltage drawer cabinet shows its excellent stability properties. Under special circumstances, the unexpected failure of the arc will show the protection ability of the preset hardware for this situation. Therefore, the preset mechanism has these effects on the performance during design.

开关柜本体需要满足两重稳定性，热稳定性和动稳定性。柜体动热稳定性能是生产商考虑的问题。在大电流的情况下，一且出现短路，柜体应具备承受短路电流的能力，对柜体的结构强度要求很高，作为低压柜的设计人员，先应考虑水平主母排的固定方式及位置放置。

The switch cabinet body needs to meet the dual stability, thermal stability and dynamic stability. The dynamic and thermal stability of the cabinet is a problem considered by the manufacturer. In the case of large current, once there is a short circuit, the cabinet body should have the ability to withstand the short circuit current, and the structural strength of the cabinet body is very high. As the designer of the low-voltage cabinet, the fixed mode and position of the horizontal main busbar should be considered first.

如断路器桩头与铜母排搭接处(母排采用镀银处理)、注意连接部位紧固螺栓的压力、测导体材料电导率是否满足要求等等，但其接触面积由于太小，使得接触电阻太大发热而使温度过高。电弧是一种气体游离放电现象，也是一种等离子体。

For example, the overlap between the circuit breaker pile head and the copper busbar (the busbar is treated with silver plating), pay attention to the pressure of the fastening bolts at the connection part, and measure whether the conductivity of the conductor material meets the requirements, but the contact area is too small, which makes the contact resistance too large and the temperature too high. Arc is a kind of gas free discharge phenomenon, and also a kind of plasma.

此外抽屉开关设备的温升，也是考查柜体结构设计的一一个重要指标。柜内的温升与外壳的安装形式、外壳的尺寸、是否带通风槽以及通风槽的大小，内部水平隔板数，元器件的有效损耗及抽屉单元个数等参数有关。抽出式柜的通风设计中功能单元部分的通风很重要。

In addition, the temperature rise of the drawer switchgear is also an important index for examining the structural design of the cabinet. The temperature rise in the cabinet is related to the installation form of the shell, the size of the shell, whether there is a ventilation slot and the size of the ventilation slot, the number of internal horizontal partitions, the effective loss of components and the number of drawer units and other parameters. The ventilation of the functional unit is very important in the ventilation design of the draw-out cabinet.

在石油、化工、冶金、建筑、矿产等建设中起重要的作用。由于基础设施和电力能源投入的加大，使低压抽出式开关柜行业开始有了较大的发展空间。您有相关的需求就来我们网站http://www.tongyuhengcheng.com咨询了解吧！

It plays an important role in the construction of petroleum, chemical industry, metallurgy, construction, mining, etc. Due to the increased investment in infrastructure and power energy, the low-voltage draw-out switchgear industry has begun to have a large space for development. Come to our website if you have relevant requirements http://www.tongyuhengcheng.com Ask about it!