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(hù)等級(jí)：因受潮、滲水、漏水、消防水管破裂、管道閥門(mén)不靈噴水等，運(yùn)行過(guò)程或安裝過(guò)程進(jìn)入灰塵，防護(hù)等級(jí)不高的空氣型母線槽容易進(jìn)水、進(jìn)塵而引起短路。根據(jù)標(biāo)準(zhǔn)，防護(hù)等級(jí)低IP20，意即：小于12.5～的固體物是可以進(jìn)入母線本體內(nèi)的。而根據(jù)實(shí)際使用場(chǎng)所，基于的前題，建議防護(hù)等級(jí)取值：樓層電井道達(dá)IP54，以防濺水;水平安裝達(dá)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(qiáng)度：短路耐受強(qiáng)度是指配電系統(tǒng)在發(fā)生短路時(shí)所能承受的短路電流的能力，它是確保的一項(xiàng)重要技術(shù)參數(shù)。正如所有的開(kāi)關(guān)(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?jǐn)嗄芰Γ_(kāi)關(guān)的分?jǐn)嗄芰υ礁咭苍礁摺６侠淼剡x擇空氣型母線槽短路耐受強(qiáng)度來(lái)匹配于整個(gè)電路系統(tǒng)的電氣性能是非常重要的。

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.