Test item 測(cè)試名稱：Tests on electric and optical fibre cables under fire conditions - Part 35:Test for vertical flame spread of vertically-mounted bunched wires or cables - Category C 電纜和光纜火焰條件下的燃燒試驗(yàn) 第35部分 垂直安裝的成束電線電纜火焰垂直蔓延試驗(yàn) C類 Test info 測(cè)試內(nèi)容：  Test ClauseRe　conditioningconditioned at a temperature of (20 ± 10) °C for at least 16 h before commencing the test.Sample Required:每根長(zhǎng)度不少于3.5m，所需根數(shù)按照下式計(jì)算。
總樣品數(shù)量=n×3.5(m) 。
n=1000V/(S－Sm);  n為試件根數(shù);  S為電纜截面積，mm2;  Sm為導(dǎo)體截面積，mm2;  A類V取7.0; B類V取3.5;   C類V取1.5;   D類V取0.5    (請(qǐng)按上式計(jì)算)　Turnaround time: normal (9 working days)所需時(shí)間: 標(biāo)準(zhǔn)(9 個(gè)工作天) Sample for reference 參考圖片: >Sample Report 報(bào)告樣本：