1.1母線槽是扁導(dǎo)體，具有散熱好、阻抗低及載流量大的特點(diǎn)。

1.1 The bus duct is a flat conductor with the characteristics of good heat dissipation, low impedance, and high current carrying capacity.

載流量630A以上的母線槽與630A以上電纜或預(yù)分支電纜相比較，在載流量相同的情況下，能節(jié)省銅材10―35%，能減少電能損耗15%以上。母線槽平日之中的傳送電流很大，縮減能耗。它很適宜交流電源，在給定的電壓數(shù)值下能維持住長時(shí)段的運(yùn)轉(zhuǎn)。一分鐘以內(nèi)的交流電狀態(tài)下，母線槽不會被擊穿且不會帶有閃絡(luò)的狀態(tài)。它能承載著的耐受電流、短時(shí)段的峰值電流，都會符合規(guī)格。

Compared with cables or pre branched cables with a current carrying capacity of 630A or above, bus ducts with a current carrying capacity of 630A or above can save copper materials by 10-35% and reduce electrical energy loss by more than 15% under the same current carrying capacity. The transmission current of the bus duct is very high on weekdays, which reduces energy consumption. It is suitable for AC power supply and can maintain long-term operation at a given voltage value. Under the condition of alternating current within one minute, the bus duct will not be broken down and there will be no flashover. The withstand current and short-term peak current that it can carry will meet the specifications.

1.2母線槽的使用壽命大約是電纜和分支電纜的2～3倍左右。

The service life of bus duct is about 2-3 times that of cables and branch cables.

我國香港、澳門及歐洲有些明確規(guī)定電纜使用壽命為12～15年。實(shí)際上母線槽的使用壽命則長達(dá)30～50年。母線槽可分成空氣絕緣類別、密集絕緣類別。通常狀態(tài)下，空氣絕緣這樣的母線槽固有的構(gòu)架很簡易，密集絕緣母線槽帶有優(yōu)的散熱特性，電流等級很高。高層建筑布設(shè)的電氣豎井，母線槽都配有某一插接口徑，布設(shè)這類接頭應(yīng)考量多重的人為干擾。然而，母線槽初始的容量很大，同時(shí)構(gòu)架緊湊，在偏大負(fù)荷的態(tài)勢下也帶有優(yōu)勢。

Hong Kong, Macau, and some European countries in China clearly stipulate that the service life of cables is 12-15 years. In fact, the service life of the bus duct is as long as 30-50 years. The bus duct can be divided into air insulation category and dense insulation category. Under normal conditions, the inherent structure of bus ducts with air insulation is very simple, and densely insulated bus ducts have excellent heat dissipation characteristics and high current levels. The electrical shafts and bus ducts installed in high-rise buildings are equipped with a certain socket diameter, and the installation of such joints should consider multiple human interference factors. However, the initial capacity of the bus duct is large, and the structure is compact, which also has advantages in situations of heavy loads.

1.3 綜合投資成本低。

1.3 Low comprehensive investment cost.

母線槽有銅導(dǎo)體、鋁導(dǎo)體材質(zhì)。銅導(dǎo)體母線槽有銅電纜相比較，630A以上的銅導(dǎo)體母線槽近似于電纜的造價(jià)成本;而鋁導(dǎo)體母線槽比銅導(dǎo)體電纜低25%～35%。電流越大，母線槽的成本與電纜相比，反而越低。為此，載流量大于630A輸電干線采用母線槽比采用電纜更經(jīng)濟(jì)合理。

The bus duct is made of copper conductor and aluminum conductor materials. Compared to copper cables, the price of copper conductor bus ducts with a capacity of 630A or above is similar to the cost of cables; Aluminum conductor bus ducts are 25% to 35% cheaper than copper conductor cables. The higher the current, the lower the cost of the bus duct compared to the cable. Therefore, using bus ducts for transmission lines with a current carrying capacity greater than 630A is more economical and reasonable than using cables.

1.4 母線槽的性能高，不易發(fā)生火災(zāi)事故。

1.4 The safety performance of the bus duct is high, and it is less prone to fire accidents.

絕大部分廠家生產(chǎn)的母線槽均是防火性(阻燃性)的母線槽。如果母線槽把溫升控制好，絕不會發(fā)生火災(zāi)事故;如果未能控制好溫升，母線槽也不容易引起火災(zāi)。因?yàn)?C認(rèn)證中對普通母線槽(非防火耐火母線槽)有防止火焰蔓延實(shí)驗(yàn)證，比普通電纜。

The vast majority of bus ducts produced by manufacturers are fire-resistant (flame retardant) bus ducts. If the temperature rise of the bus duct is well controlled, there will never be a fire accident; If the temperature rise is not well controlled, the bus duct is also less likely to cause a fire. Because the 3C certification has a flame prevention test certificate for ordinary bus ducts (non fire and fire-resistant bus ducts), which is safer than ordinary cables.

1.5 靈活性強(qiáng)，容易引出分支電路。

1.5 Strong flexibility, easy to introduce branch circuits.

母線槽可預(yù)留各種插口，隨時(shí)可增減或移動設(shè)備。母線槽因?qū)儆诓褰邮降模`活性強(qiáng)，容易引出分支電路。預(yù)制電纜分支電路，因?qū)僬w式預(yù)制電纜，不容易引出分支電路，同時(shí)電纜要增加分支電路難度也很大。

The bus duct can reserve various sockets, which can be added or removed or moved at any time. The bus duct is plug-in type with strong flexibility and is easy to lead out branch circuits. Prefabricated cable branch circuits, as integral prefabricated cables, are not easy to lead out branch circuits, and the difficulty of adding branch circuits to the cables is also significant.

1.6 改造時(shí)成本損失較小。

1.6 The cost loss during renovation is relatively small.

在項(xiàng)目改造時(shí)，母線槽同其他設(shè)備一樣，可以隨時(shí)拆裝、調(diào)整使用場所及位置，成本損失較小，如果電纜改造的損失成本則是很大的。

During project renovation, the busbar duct, like other equipment, can be disassembled and adjusted at any time, with minimal cost loss. However, the cost of cable renovation is significant.

1.7 載流能力大，能滿足輸電干線的要求。

1.7 has a large current carrying capacity and can meet the requirements of transmission lines.

常用電纜截面一般不超過300，載流能力明敷約600多安，電纜在橋架內(nèi)敷設(shè)，按照有關(guān)“規(guī)范”的規(guī)定，降容系數(shù)為0.7，載流量只有400A，該電流只能滿足小容量輸電干線的要求，而母線槽載流能力大，各種規(guī)格的電流值都有，大能到8000A，完全能滿足輸電干線的要求。

The cross-sectional area of commonly used cables generally does not exceed 300, and the current carrying capacity is about 600 amperes when laid on the cable tray. According to relevant regulations, the capacity reduction coefficient is 0.7, and the current carrying capacity is only 400A. This current can only meet the requirements of small capacity transmission lines, while the current carrying capacity of bus ducts is large, with various specifications of current values available, up to 8000A, which can fully meet the requirements of transmission lines.

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