NH-VV耐火電纜型號
適用范圍
本產品適用于工頻額定電壓0.6/1kV及以下配電線路或工業(yè)裝置中有耐火要求的固定敷設場所使用。
The product is suitable for use in power distribution lines or fixed installations with rated power-frequency voltage up to and including 0.6/1kV.
NH-VV耐火電纜型號使用特性
·工頻額定電壓U0/U:0.6/1kV。
Rated power-frequency voltage U0/U:0.6/1kV.
·電纜導體的zui高允許*工作溫度（PVC/XLPE）:70℃/90℃.
Max.permissible continuous operating temperature of conductor (PVC/XLPE): 70℃/90℃
·短路時（zui長持續(xù)時間不超過5s）電纜導體zui高允許溫度
PVC:導體截面≤300mm2-160℃
導體截面＞300mm2-140℃
XLPE:250℃
Max.short-circuit temperature of the conductor shall not exceed(5s maxiumduration):
PVC:cross-section of conductor≤300mm2-160℃
cross-section of conductor＞300mm2-140℃
XLPE:250℃
·電纜敷設時環(huán)境溫度應不低于0℃
The ambient temperature under installation should not below 0℃
·電纜的彎曲半徑：多芯電纜不小于電纜外徑15倍，單芯電纜不小于電纜外徑20倍。
The bending radius of a single-core cable should not less than 20 times of the cable diameter.
The bending radius of multicore-cable should not less than 15 times of the cable diameter.
*：范
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