1
2
C類阻燃和A類阻燃。
具體指標(biāo)可查GB/T19666
3
4
生產(chǎn)中成纜后的包帶和外護(hù)套材料有所區(qū)別的。
5
6
VV是電纜的型號(hào),是聚氯乙烯絕緣聚氯乙烯護(hù)套電力電纜,額定電壓是0.6/1kV
ZC和ZA是阻燃類別代號(hào),A和C是指阻燃級(jí)別,這是GB/T19666-2005阻燃耐火電線電纜通則中規(guī)定的
表4阻燃電纜成束阻燃性能要求
Table 4 Bunched burning characteristic
代號(hào) Code | 試樣非金屬材料體積/(L/m) Volume of non metal materials(L/m) | 供火時(shí)間/s Time of fire supply/s | 合格指標(biāo) Acceptable index | 試驗(yàn)方法 Test mode |
ZA ZB ZC ZD | 7 3.5 1.5 0.5 | 40 40 20 20 | 1) 試樣上炭化的長(zhǎng)度不應(yīng)超過距噴嘴底邊上 The length of carbonation is no more than 2) 停止供火后試樣上的有焰燃燒時(shí)間不應(yīng)超過1h The time of flaming combustion shall be no more than 1h, after fire supply is stopped. | GB/T 18380.3 IEC 6 |
ZD適用于試樣外徑不大于 ZD is suitable for the cables whose sample's outer diameter is no more than | ||||