耐火試驗中電纜橋架的耐火時間是如何規(guī)定的?
根據(jù) GB 29415—2013《耐火電纜槽盒》,電纜橋架耐火時間分為 4 個等級:
According to GB 29415-2013 "Fire resistant Cable Tray Boxes", the fire resistance time of cable trays is divided into four levels:
F1:大于等于 90 分鐘。
F1: Greater than or equal to 90 minutes.
F2:大于等于 60 分鐘。
F2: Greater than or equal to 60 minutes.
F3:大于等于 45 分鐘。
F3: Greater than or equal to 45 minutes.

F4:大于等于 30 分鐘。
F4: Greater than or equal to 30 minutes.
另外,也有資料將電纜橋架的耐火等級分為 NI、NII、NIII 三個等級,其中 NI 等級耐火時間大于等于 60 分鐘,NII 等級大于等于 45 分鐘,NIII 等級大于等于 30 分鐘。
In addition, there are also materials that classify the fire resistance level of cable trays into three levels: NI, NII, and NIII. Among them, the fire resistance time of NI level is greater than or equal to 60 minutes, NII level is greater than or equal to 45 minutes, and NIII level is greater than or equal to 30 minutes.
不同使用環(huán)境對防火橋架的耐火時間要求有所不同,如地下車庫等對防火有特別要求的地段,防火橋架耐火時間要求大于 1 小時。在實際應(yīng)用中,應(yīng)根據(jù)具體的工程需求和相關(guān)規(guī)范來選擇合適耐火時間的電纜橋架。
The fire resistance time requirements for fire-resistant cable trays vary depending on the usage environment. For example, in underground garages and other areas with special fire protection requirements, the fire resistance time of fire-resistant cable trays should be greater than 1 hour. In practical applications, cable trays with appropriate fire resistance time should be selected based on specific engineering requirements and relevant specifications.
下一篇:耐火試驗后電纜橋架的性能和質(zhì)量如何評估?
相關(guān)文章 / Recommended news
- 鍍鋅橋架是一種用于承載和保護電纜的結(jié)構(gòu)
- 濟南電纜橋架選購指南:熱鍍鋅與熱浸鋅一字之差,應(yīng)用場景與天壤之別
- 山東工程人必看!橋架安裝驗收7大硬標(biāo)準(zhǔn),少一項都要返工,附詳細(xì)數(shù)據(jù)
- 濟南廠房福音!大跨距橋架破解3大痛點,加強筋加,安裝省一半錢
- 山東工程人警惕!橋架敷線踩這坑必返工,監(jiān)理當(dāng)場叫停,國標(biāo)早有明確規(guī)定
- 濟南人避坑!橋架≠線槽,90%工程人都搞混,一字之差差千里
- 避坑指南!山東電纜橋架規(guī)格別瞎選,偏大浪費偏小隱患大,國標(biāo)早就定好了
- 濟南人必看!鋁合金電纜橋架選對厚度,耐用又省心,90%的人選錯踩坑
- 山東人必看!電纜橋架不是“鐵架子”,藏著建筑用電的密碼,90%的人都不懂
- 800kg/m抗壓!濟南電纜橋架,破解3大工程痛點,工期省30%
陽極氧化鋁合金橋架
托盤式電纜橋架
梯式電纜橋架
梯式不銹鋼電纜橋架
深灰色金屬防火電纜橋架


