Conductivity of air type Bus duct: the air type Bus duct has small Skin effect, does not need to be used for capacity reduction, and has small voltage drop. The cable core is multi strand fine copper wire, and a single cable generally does not exceed 1000A. When the capacity is large, it needs to be completed by connecting several cables in parallel. Moreover, the Skin effect of the cable is serious, reducing the current rating, increasing the voltage drop, causing large energy loss, easy aging of the cable, and easy to cause line heating.

空氣型母線槽防護等級：因受潮、滲水、漏水、消防水管破裂、管道閥門不靈噴水等，運行過程或安裝過程進入灰塵，防護等級不高的空氣型母線槽容易進水、進塵而引起短路。根據標準，防護等級低IP20，意即：小于12.5～的固體物是可以進入母線本體內的。而根據實際使用場所，基于安全的前題，建議防護等級取值：樓層電井道達IP54，以防濺水;水平安裝達IP65，防噴水。

Protection grade of air type Bus duct: due to moisture, water seepage, water leakage, fire water pipe rupture, pipeline valve ineffectiveness and water spraying, dust enters during operation or installation, and air type Bus duct with low protection grade is easy to enter water and dust, which may cause short circuit. According to national standards, the minimum protection level is IP20, which means that solid objects less than 12.5~can enter the busbar body. Based on the actual usage location and safety considerations, it is recommended to set the protection level as follows: the floor electrical shaft should reach IP54 to prevent water splashing; Horizontal installation up to IP65, anti water spray.

空氣型母線槽短路耐受強度：短路耐受強度是指配電系統在發生短路時所能承受的短路電流的能力，它是確保安全的一項重要技術參數。正如所有的開關(微型斷路器、塑殼式斷路器、框架式斷路器、智能式斷路器等)都有分斷能力，開關的分斷能力越高價格也越高。而合理地選擇空氣型母線槽短路耐受強度來匹配于整個電路系統的電氣安全性能是非常重要的。

Short circuit withstand strength of air type Bus duct: short circuit withstand strength refers to the ability of the distribution system to withstand short circuit current in case of short circuit, which is an important technical parameter to ensure safety. Just as all switches (micro circuit breakers, molded case circuit breakers, frame circuit breakers, intelligent circuit breakers, etc.) have breaking capacity, the higher the breaking capacity of the switch, the higher the price. It is very important to reasonably select the short circuit withstand strength of air type Bus duct to match the electrical safety performance of the entire circuit system.