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Longitudinal Protection from Moisture ingress

Tenderers are to include means of longitudinal protection to block moisture propagation longitudinally to the cable. The design and manufacturing shall be such so as the requirement of paragraph 19.22 of !EC 60502-2 is met and at the same time this insulation screen and copper wire screen are at an equipotential and the aluminium foil and copper-wire screen are at a galvanic contact. The use of swellable powder only shall not be accepted.

Radial Protection from moisture ingress

Tenderers are to include means for radial protection from moisture ingress. The protection shall be Aluminium foil tightly bonded to the PE sheath of minimum thickness of 0,2 mm and minimum overlap of 5 mm. Designs including foil as adding to the rating of Copper Wire screen shall not be accepted.

請(qǐng)問各位！上面是什么結(jié)構(gòu)？謝謝

縱向阻水保護(hù)：投標(biāo)文件應(yīng)包括防止水分向電纜縱向傳播的方法。電纜的設(shè)計(jì)和制造應(yīng)符合IEC60502.2中19.22章要求，并且絕緣屏蔽和銅絲屏蔽應(yīng)該是等電位，鋁箔和銅絲屏蔽應(yīng)是連電導(dǎo)通的。不允許僅采用阻水粉的方法。

徑向阻水保護(hù)：投標(biāo)文件應(yīng)包括防止水分向電纜徑向傳播的方法。防護(hù)措施是，縱包鋁箔應(yīng)與PE外護(hù)套緊密結(jié)合，且鋁箔厚度不小于0.2mm，縱包搭蓋寬度不小于5mm。（最后一句話不太明白）

12/20kV電纜的絕緣厚度是5.5mm，樓主的12/20kV電纜是用于水下的吧。

用鋁塑復(fù)合帶縱包結(jié)構(gòu)