(1）電纜橋架是梯級(jí)式、托盤(pán)式、槽式電纜橋架的總稱，按制造材料分為金屬橋架和高分子合金電纜橋架、普通塑料橋架。

(1) Cable tray is a general term for stepped, tray, and trough cable trays, which can be divided into metal tray, polymer alloy cable tray, and ordinary plastic tray according to manufacturing materials.

(2）按結(jié)構(gòu)形式分為梯級(jí)式電纜橋架（簡(jiǎn)稱:梯架）、托盤(pán)式電纜橋架（簡(jiǎn)稱:托盤(pán))、槽式電纜橋架(簡(jiǎn)稱:槽盒)。

(2) According to the structural form, it is divided into ladder type cable tray (referred to as ladder), tray type cable tray (referred to as tray), and trough type cable tray (referred to as trough box).

(3）梯架、托盤(pán)和槽盒各有優(yōu)缺點(diǎn);梯架具有良好的通風(fēng)性能，但不防塵、不防干擾。托盤(pán)、槽式具有防塵、防干擾性能，但散熱性能較差。

(3) Ladders, trays, and trough boxes each have their own advantages and disadvantages; The ladder has good ventilation performance, but it is not dust-proof or interfered with. The tray and slot type have dust-proof and anti-interference performance, but their heat dissipation performance is poor.

(4)電纜橋架在民用建筑中主要用于明敷布線。

(4) Cable trays are mainly used for exposed wiring in civil buildings.

梯級(jí)式電纜橋架它具有重量輕、成本低、安裝方便、散熱、透氣好等優(yōu)點(diǎn)，適用于直徑較大電纜的敷設(shè)。在工業(yè)與民用建筑中、通常用于明敷布線系統(tǒng)。

The stepped cable tray has the advantages of light weight, low cost, easy installation, good heat dissipation and ventilation, and is suitable for laying cables with larger diameters. In industrial and civil buildings, it is commonly used for exposed wiring systems.

梯架選用原則如下:

The principles for selecting ladders are as follows:

(1）普通電力電纜、通信電纜布線可采用梯架布線，但不可在的悶頂或吊頂內(nèi)敷設(shè);

(1) Ordinary power cables and communication cables can be wired using ladder racks, but cannot be laid in enclosed or suspended ceilings;

(2）除950℃、3h的礦物絕緣電纜外，750℃、1.5h的耐火電纜不可采用梯架布線;

(2) Except for mineral insulated cables at 950 ℃ and 3 hours, fire-resistant cables at 750 ℃ and 1.5 hours cannot be wired using ladder racks;

(3）在強(qiáng)弱電豎井內(nèi)應(yīng)優(yōu)先考慮采用銻袈識(shí)課堂

(3) Priority should be given to using antimony recognition classrooms in strong and weak electrical vertical shafts

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