Block plan and elevation plan showing the detailed cable routing.

显示详细电缆线路的楼宇图及立视图.

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Problem is also encountered in connections between underground lines and substations.

地下电缆线路与变电站联接时还会碰到问题.

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Underground lines have the further disadvantage of poor accessibility.

地下电缆线路还具有维修困难的缺点.

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The underlying problem is that cable plants have not been built for high reliability.

其根本问题是电缆线路设备不是按高可靠性建起来的.

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With the increase of used cable lines, the problem of arc grounding overvoltage is more prominent.

随着配电网中采用的电缆线路的增多, 弧光接地过电压问题日益突出.

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It can also used for zero - sequence current measurement and single phase ground protection.

也可用于电缆线路 零序电流 测量和单相接地保护.

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