NH-VV NH-YJV耐火電纜產(chǎn)品標(biāo)準(zhǔn)
本產(chǎn)品按GB12706《額定電壓35kV及以下銅芯、鋁芯塑料絕緣電力電纜》和GB12666《電線電纜燃燒實(shí)驗(yàn)方法》標(biāo)準(zhǔn)生產(chǎn)，同時(shí)還可根據(jù)用戶需要按國際電工委員會(huì)推薦的IEC標(biāo)準(zhǔn)、英國BS標(biāo)準(zhǔn)、德國DIN標(biāo)準(zhǔn)、美國ICEA標(biāo)準(zhǔn)及日本JIS標(biāo)準(zhǔn)生產(chǎn)。
The product is manufactured according to the standard of GB12706 and GB12666 or IEC,BS,DIN,ICEA,and JIS upon request.
適用范圍
本產(chǎn)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(shè)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.
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(dǎo)體的最高允許長期工作溫度（PVC/XLPE）:70℃/90℃.
Max.permissible continuous operating temperature of conductor (PVC/XLPE): 70℃/90℃
·短路時(shí)（最長持續(xù)時(shí)間不超過5s）電纜導(dǎo)體最高允許溫度
PVC:導(dǎo)體截面≤300mm2-160℃
導(dǎo)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(shè)時(shí)環(huán)境溫度應(yīng)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
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