判斷(duan)電(dian)纜(lan)橋架的(de)耐火(huo)等級(ji)，主(zhu)要(yao)依(yi)據以(yi)下(xia)方(fang)法(fa)：

　　The fire resistance rating of cable trays is mainly determined by the following methods:

　　1.查看(kan)產品(pin)標(biao)識與(yu)說(shuo)明(ming)書

　　1. Check the product identification and manual

　　· 合格的(de)電(dian)纜(lan)橋架產品通常會(hui)在(zai)外(wai)殼(ke)、銘(ming)牌(pai)或包(bao)裝上(shang)明(ming)確(que)標註(zhu)耐火(huo)等級(ji)，如F1、F2、F3、F4（對應(ying)GB 29415-2013標準）或NI、NII、NIII（對應(ying)/T 10216-2013標準）。

　　·Qualified cable tray products are usually clearly marked with fire resistance ratings on the shell, nameplate, or packaging, such as F1, F2, F3, F4 (corresponding to GB 29415-2013 standard) or NI, NII, NIII (corresponding to /T 10216-2013 standard).

　　· 產品說(shuo)明(ming)書也會(hui)詳(xiang)細(xi)說(shuo)明(ming)其(qi)耐火(huo)性能、適用場景及(ji)對應(ying)的(de)耐火(huo)時間。

　　·The product manual will also provide detailed information on its fire resistance performance, applicable scenarios, and corresponding fire resistance time.

　　2.檢(jian)查材料(liao)與塗層(ceng)

　　2. Check materials and coatings

　　· 防(fang)火(huo)塗料塗層(ceng)：耐火(huo)橋架表(biao)面通常塗覆有防(fang)火(huo)塗料，塗層(ceng)厚(hou)度是(shi)影(ying)響耐火(huo)性能的(de)關鍵因素(su)。可通(tong)過測厚儀測量塗層(ceng)厚(hou)度，壹(yi)般(ban)要(yao)求防(fang)火(huo)塗層(ceng)厚(hou)度不(bu)低(di)於500μm。

　　·Fireproof coating: The surface of fire-resistant bridge frames is usually coated with fire-resistant coating, and the thickness of the coating is a key factor affecting the fire resistance performance. The thickness of the coating can be measured by a thickness gauge, and it is generally required that the thickness of the fireproof coating is not less than 500 μ m.

　　· 非金(jin)屬耐火(huo)材料(liao)：部分橋架采用非金(jin)屬耐火(huo)材料(liao)（如玻(bo)璃纖(xian)維、陶瓷(ci)纖(xian)維(wei)等）作為內層(ceng)或(huo)夾(jia)層(ceng)，這(zhe)些材料(liao)的(de)性能和厚度也(ye)會(hui)影(ying)響耐火(huo)等級(ji)。

　　·Non metallic refractory materials: Some bridge frames use non-metallic refractory materials (such as glass fiber, ceramic fiber, etc.) as the inner or interlayer, and the performance and thickness of these materials will also affect the fire resistance level.

　　3.查閱(yue)檢(jian)測報告(gao)

　　3. Refer to the testing report

　　· 要(yao)求供應(ying)商提供第(di)三(san)方檢(jian)測機(ji)構出(chu)具(ju)的(de)耐火(huo)性能檢測報告(gao)，報告(gao)中會(hui)明(ming)確(que)標註(zhu)橋(qiao)架的(de)耐火(huo)等級(ji)、試(shi)驗(yan)條件（如供火(huo)溫度、持(chi)續時間）及(ji)檢測結果。

　　·Suppliers are required to provide a fire resistance performance testing report issued by a third-party testing agency, which will clearly indicate the fire resistance level, testing conditions (such as supply temperature and duration), and testing results of the bridge.

　　· 檢測報告(gao)應(ying)符(fu)合GB 8624-2012《建(jian)築(zhu)材料(liao)及(ji)制品(pin)燃(ran)燒(shao)性能(neng)分級(ji)》、GB 29415-2013《耐火(huo)電(dian)纜(lan)槽盒(he)》或/T 10216-2013《電(dian)控(kong)配(pei)電(dian)用電(dian)纜(lan)橋架》等標準。

　　·The testing report should comply with national standards such as GB 8624-2012 "Classification of Combustion Performance of Building Materials and Products", GB 29415-2013 "Fire resistant Cable Tray" or /T 10216-2013 "Cable Trays for Electrical Control and Distribution".

　　4.觀察結構與工藝

　　4. Observe the structure and process

　　· 耐火(huo)橋架的(de)結構設(she)計（如是否(fou)有(you)封(feng)閉式(shi)蓋(gai)板(ban)、通(tong)風(feng)孔數量與(yu)大小(xiao)）會(hui)影(ying)響熱量(liang)傳(chuan)遞(di)和(he)耐火(huo)性能。封閉式(shi)結(jie)構或(huo)通風(feng)孔較小的(de)橋架通常耐火(huo)性能更好(hao)。

　　·The structural design of fire-resistant cable trays (such as whether there are enclosed cover plates, the number and size of ventilation holes) will affect heat transfer and fire resistance performance. Bridges with enclosed structures or smaller ventilation holes usually have better fire resistance.

　　· 制造(zao)工藝的(de)精細(xi)程度（如焊接質量(liang)、塗層(ceng)均(jun)勻性）也(ye)與(yu)耐火(huo)等級(ji)相(xiang)關(guan)，工藝良好(hao)的(de)橋架能更好地(di)抵禦火(huo)災(zai)高溫。若對(dui)電(dian)纜(lan)橋架的(de)耐火(huo)等級(ji)存疑，建議咨詢(xun)消防工程師或(huo)檢(jian)測機(ji)構，以(yi)確保(bao)產品(pin)符(fu)合實(shi)際使用場景的(de)要(yao)求。

　　·The level of precision in manufacturing processes, such as welding quality and coating uniformity, is also related to the fire resistance rating. Bridge structures with good craftsmanship can better resist high temperatures caused by fire. If you have doubts about the fire resistance rating of cable trays, it is recommended to consult a professional fire engineer or testing agency to ensure that the product meets the safety requirements of actual usage scenarios.

　　本文(wen)由  濟(ji)南(nan)電(dian)纜(lan)橋架  友情奉獻(xian).更(geng)多有關(guan)的(de)知識請點擊  http://wdyvw.cn//  真(zhen)誠的(de)態度.為(wei)您(nin)提供為(wei)的(de)服務(wu).更多有關(guan)的(de)知識我們(men)將(jiang)會(hui)陸續向大(da)家(jia)奉獻(xian).敬(jing)請期(qi)待.

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